Danfoss WD, WP, WR User guide

Technical Information

WD, WP and WR Series

Orbital Motors

www.danfoss.com

Technical Information

Orbital Motors Type WD, WP and WR

Revision history	Table of revisions
	Date	Changed	Rev
	December 2019	Conversion to CMS/ET Danfoss layout.	0201
	June 2017	First edition	0101

2 | © Danfoss | December 2019

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Technical Information
Orbital Motors Type WD, WP and WR
Contents
Technical Information
Operating Recommendations.....................................................................................................................................................	4
Oil Type...........................................................................................................................................................................................	4
Fluid Viscosity and Filtration...................................................................................................................................................	4
Installation and Start-up...........................................................................................................................................................	4
Motor Protection.........................................................................................................................................................................	4
Hydraulic Motor Safety Precaution.......................................................................................................................................	4
Motor/Brake Precaution...........................................................................................................................................................	5
Motor Connections..........................................................................................................................................................................	6
Product Testing.................................................................................................................................................................................	7
Allowable Bearing and Shaft Loading.......................................................................................................................................	7
Vehicle Drive Calculations.............................................................................................................................................................	9
Induced Side Load.........................................................................................................................................................................	12
Hydraulic Equations......................................................................................................................................................................	13
Shaft Nut Information...................................................................................................................................................................	14
Optional Motor Features
Speed Sensor Options..................................................................................................................................................................	16
Freeturning Rotor Option...........................................................................................................................................................	19
Valve Cavity Option.......................................................................................................................................................................	19
Slinger Seal Option........................................................................................................................................................................	20
WD Product Line
WD Introduction.............................................................................................................................................................................	21
WD Functional Charts...................................................................................................................................................................	22
WD 145/146 Series.........................................................................................................................................................................	28
145/146 Series Housings........................................................................................................................................................	28
145/146 Series Technical Data.............................................................................................................................................	30
145/146 Series Shafts..............................................................................................................................................................	33
145/146 Series Order Codes.................................................................................................................................................	35
WP Product Line
WP Introduction.............................................................................................................................................................................	36
WP Functional Charts...................................................................................................................................................................	37
155/156 Series.................................................................................................................................................................................	45
155/156 Series Housings........................................................................................................................................................	45
155/156 Series Technical Data.............................................................................................................................................	51
155/156 Series Shafts..............................................................................................................................................................	55
155/156 Order Codes..............................................................................................................................................................	57
WP 157 and 158 Series.................................................................................................................................................................	60
WP 157 and 158 Series Housings........................................................................................................................................	60
WP 157 and 158 Series Technical Information...............................................................................................................	60
WP 157 and 158 Series Shafts..............................................................................................................................................	62
WP 157 and 158 Series Ordering Information................................................................................................................	64
WR Product Line
WR Product Line Introduction...................................................................................................................................................	65
WR Displacement Performance................................................................................................................................................	66
WR 251 and 252 Series.................................................................................................................................................................	75
WR 251 and 252 Series Housings........................................................................................................................................	75
WR 251 and 252 Series Technical Information...............................................................................................................	76
WR 251 and 252 Series Shafts..............................................................................................................................................	79
WR 251 and 252 Series Ordering Information................................................................................................................	80
WR 255 and 256 Series.................................................................................................................................................................	81
WR 255 and 256 Series Housings........................................................................................................................................	81
WR 255 and 256 Series Technical Information...............................................................................................................	85
WR 255 and 256 Series Shafts..............................................................................................................................................	89
WR 255 and 256 Series Ordering Information................................................................................................................	91

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Technical Information

Orbital Motors Type WD, WP and WR

Technical Information

Operating Recommendations

Oil Type

Hydraulic oils with anti-wear, anti-foam and demulsifiers are recommended for systems incorporating Danfoss motors. Straight oils can be used but may require VI (viscosity index) improvers depending on the operating temperature range of the system. Other water based and environmentally friendly oils may be used, but service life of the motor and other components in the system may be significantly shortened. Before using any type of fluid, consult the fluid requirements for all components in the system for compatibility. Testing under actual operating conditions is the only way to determine if acceptable service life will be achieved.

Fluid Viscosity and Filtration

Fluids with a viscosity between 20 - 43 cSt [100 - 200 S.U.S.] at operating temperature is recommended. Fluid temperature should also be maintained below 85°C [180° F]. It is also suggested that the type of pump and its operating specifications be taken into account when choosing a fluid for the system. Fluids with high viscosity can cause cavitation at the inlet side of the pump. Systems that operate over a wide range of temperatures may require viscosity improvers to provide acceptable fluid performance.

Danfoss recommends maintaining an oil cleanliness level of ISO 17-14 or better.

Installation and Start-up

When installing a Danfoss motor it is important that the mounting flange of the motor makes full contact with the mounting surface of the application. Mounting hardware of the appropriate grade and size must be used. Hubs, pulleys, sprockets and couplings must be properly aligned to avoid inducing excessive thrust or radial loads. Although the output device must fit the shaft snug, a hammer should never be used to install any type of output device onto the shaft. The port plugs should only be removed from the motor when the system connections are ready to be made. To avoid contamination, remove all matter from around the ports of the motor and the threads of the fittings. Once all system connections are made, it is recommended that the motor be run-in for 15-30 minutes at no load and half speed to remove air from the hydraulic system.

Motor Protection

Over-pressurization of a motor is one of the primary causes of motor failure. To prevent these situations, it is necessary to provide adequate relief protection for a motor based on the pressure ratings for that particular model. For systems that may experience overrunning conditions, special precautions must be taken. In an overrunning condition, the motor functions as a pump and attempts to convert kinetic energy into hydraulic energy. Unless the system is properly configured for this condition, damage to the motor or system can occur.

To protect against this condition a counterbalance valve or relief cartridge must be incorporated into the circuit to reduce the risk of overpressurization. If a relief cartridge is used, it must be installed upline of the motor, if not in the motor, to relieve the pressure created by the over-running motor. To provide proper motor protection for an over-running load application, the pressure setting of the pressure relief valve must not exceed the intermittent rating of the motor.

Hydraulic Motor Safety Precaution

A hydraulic motor must not be used to hold a suspended load. Due to the necessary internal tolerances, all hydraulic motors will experience some degree of creep when a load induced torque is applied to a motor at rest. All applications that require a load to be held must use some form of mechanical brake designed for that purpose.

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Technical Information

Orbital Motors Type WD, WP and WR

Technical Information

Motor/Brake Precaution

C Caution

Danfoss’ motors/brakes are intended to operate as static or parking brakes. System circuitry must be designed to bring the load to a stop before applying the brake.

C Caution

Because it is possible for some large displacement motors to overpower the brake, it is critical that the maximum system pressure be limited for these applications. Failure to do so could cause serious injury or death. When choosing a motor/brake for an application, consult the performance chart for the series and displacement chosen for the application to verify that the maximum operating pressure of the system will not allow the motor to produce more torque than the maximum rating of the brake. Also, it is vital that the system relief be set low enough to insure that the motor is not able to overpower the brake.

To ensure proper operation of the brake, a separate case drain back to tank must be used. Use of the internal drain option is not recommended due to the possibility of return line pressure spikes. A simple schematic of a system utilizing a motor/brake is shown in Typical Motor/Brake Schematic on page 5. Although maximum brake release pressure may be used for an application, a 34 bar [500 psi] pressure reducing valve is recommended to promote maximum life for the brake release piston seals. However, if a pressure reducing valve is used in a system which has case drain back pressure, the pressure reducing valve should be set to 34 bar [500 psi] over the expected case pressure to ensure full brake release.

To achieve proper brake release operation, it is necessary to bleed out any trapped air and fill brake release cavity and hoses before all connections are tightened. To facilitate this operation, all motor/ brakes feature two release ports. One or both of these ports may be used to release the brake in the unit. Motor/brakes should be configured so that the release ports are near the top of the unit in the installed position.

Typical Motor/Brake Schematic

P109317

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Technical Information

Orbital Motors Type WD, WP and WR

Technical Information

Once all system connections are made, one release port must be opened to atmosphere and the brake release line carefully charged with fluid until all air is removed from the line and motor/brake release cavity. When this has been accomplished the port plug or secondary release line must be reinstalled. In the event of a pump or battery failure, an external pressure source may be connected to the brake release port to release the brake, allowing the machine to be moved.

W Warning

It is vital that all operating recommendations be followed. Failure to do so could result in injury or death.

Motor Connections

There are two common types of circuits used for connecting multiple numbers of motors – series connection and parallel connection.

Series Connection

When motors are connected in series, the outlet of one motor is connected to the inlet of the next motor. This allows the full pump flow to go through each motor and provide maximum speed. Pressure and torque are distributed between the motors based on the load each motor is subjected to. The maximum system pressure must be no greater than the maximum inlet pressure of the first motor. The allowable back pressure rating for a motor must also be considered. In some series circuits the motors must have an external case drain connected. A series connection is desirable when it is important for all the motors to run the same speed such as on a long line conveyor.

Series Circuit

P109318

Parallel Connection

In a parallel connection all of the motor inlets are connected. This makes the maximum system pressure available to each motor allowing each motor to produce full torque at that pressure. The pump flow is split between the individual motors according to their loads and displacements. If one motor has no load, the oil will take the path of least resistance and all the flow will go to that one motor. The others will not turn. If this condition can occur, a flow divider is recommended to distribute the oil and act as a differential.

Parallel Circuit

P109319

The motor circuits shown above are for illustration purposes only. Components and circuitry for actual applications may vary greatly and should be chosen based on the application.

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Technical Information

Orbital Motors Type WD, WP and WR

Technical Information

Product Testing

Performance testing is the critical measure of a motor’s ability to convert flow and pressure into speed and torque. All product testing is conducted using Danfoss’ state of the art test facility. This facility utilizes fully automated test equipment and custom designed software to provide accurate, reliable test data. Test routines are standardized, including test stand calibration and stabilization of fluid temperature and viscosity, to provide consistent data. The example below provides an explanation of the values pertaining to each heading on the performance chart.

080

76 cc [4.6 in3/rev.]

	<![if ! IE]> <![endif]>[gpm]lpm	4 [1]
		2 [0.5]
	<![if ! IE]> <![endif]>-
	<![if ! IE]> <![endif]>Flow	8	[2]
		15 [4]
		23 [6]
		1
		38	[10]
		45	[12]
	<![if ! IE]> <![endif]>Max. Cont.
		53	[14]
		61	[16]
	<![if ! IE]> <![endif]>Max. Inter.
		64	[17]

	Pressure - bars [psi]															Max. Cont.				Max. Inter.
	17 [250]		35 [500]		69 [1000]				104 [1500] 2				[2000]	173 [2500]		207 [3000]				242 [3500]
		- Nm [lb-in], Speed rpm														Intermittent Ratings - 10% of Operation
																								<![if ! IE]> <![endif]>Theoretical
6 14		50	30	50	61	43			91	43		120	34	145	32	169	32			191	31		51
		[127]		[262]		[543]				[806]			[1062]		[1285]		[1496]				[1693]		26
		25		24		21				18			17		11		11				9
	16	[140]	32	[286]	63	[559]			95	[839]		124	[1099]	151	[1340]	178	[1579]			203	[1796]
	16	[139]	32	[280]	64	[563]			97	[857]		129	[1139]	157	[1390]	187	[1652]			211	[1865]		101	<![if ! IE]> <![endif]>rpm
100			100			99				92			87		79		78				77
	14	[127]	31	[275]	65	[572]			99	[872]		131	[1155]	160	[1420]	186	[1643]			216	[1911]		201
	200		200			199		7 96		191			181		174		160				154
	13	[113]	30	[262]	63	[557]				[853]		130	[1149]	160	[1420]	186	[1646]	3			[1930]		302
	301		300			297				295			284		271		253				245
	10	[91]	27	[243]	61	[536]		93		[826]		127	[1125]	159	[1409]	187	[1654]			220	[1945]		4
	401		400			398				390			384		372		346				339
			24	[212]	58	[511]			89	[790]		123	[1087]	156	[1379]	185	[1638]			213	[1883]		503
			502			500				499			498		485		443				433
			20	[177]	54	[482]			87	[767]		120	[1060]	164	[1451]	193	[1711]			228	[2021]		603
			602			601				600			597		540		526				510
			14	[127]	50	[445]			84	[741]		124	[1098]	155	[1369]	185	[1640]			217	[1918]		704
			690			689				5			658		644		631				613
																							804
																							904
	Overall Efficiency - 70 - 100%							40 - 69%					0 - 39%
	Theoretical Torque - Nm [lb-in]
	21 [183]		41 [366]		83 [732]				124 [1099] 8				[1465]	207 [1831]		248 [2197]				290 [2564]
	Displacement tested at 54°C [129°F] with an oil viscosity of 46cSt [213 SUS]																						P109395

1. Flow represents the amount of fluid passing through the motor during each minute of the test.

3. The maximum continuous pressure rating and maximum intermittent pressure rating of the motor are separated by the dark lines on the chart.

2. Pressure refers to the measured pressure differential between the inlet and return ports of the motor during the test.

4. Theoretical RPM represents the RPM that the motor would produce if it were 100% volumetrically efficient. Measured RPM divided by the theoretical RPM give the actual volumetric efficiency of the motor.

5. The maximum continuous flow rating and maximum intermittent flow rating of the motor are separated by the dark line on the chart.

7. Areas within the white shading represent maximum motor efficiencies.

6. Performance numbers represent the actual torque and speed generated by the motor based on the corresponding input pressure and flow. The numbers on the top row indicate torque as measured in Nm [lb-in], while the bottom number represents the speed of the output shaft.

8. Theoretical Torque represents the torque that the motor would produce if it were 100% mechanically efficient. Actual torque divided by the theoretical torque gives the actual mechanical efficiency of the motor.

Allowable Bearing and Shaft Loading

This catalog provides curves showing allowable radial loads at points along the longitudinal axis of the motor. They are dimensioned from the mounting flange. Two capacity curves for the shaft and bearings are shown. A vertical line through the centerline of the load drawn to intersect the x-axis intersects the curves at the load capacity of the shaft and of the bearing.

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Technical Information

Orbital Motors Type WD, WP and WR

Technical Information

In the example below, the maximum radial load bearing rating is between the internal roller bearings illustrated with a solid line. The allowable shaft rating is shown with a dotted line.

The bearing curves for each model are based on laboratory analysis and testing conducted at Danfoss. The shaft loading is based on a 3:1 safety factor and 330 Kpsi tensile strength. The allowable load is the lower of the curves at a given point. For instance, one inch in front of the mounting flange the bearing capacity is lower than the shaft capacity. In this case, the bearing is the limiting load. The motor user needs to determine which series of motor to use based on their application knowledge.

ISO 281 Ratings vs. Manufacturer's Ratings

Published bearing curves can come from more than one type of analysis. The ISO 281 bearing rating is an international standard for the dynamic load rating of roller bearings. The rating is for a set load at a speed of 33 1/3 RPM for 500 hours (1 million revolutions). The standard was established to allow consistent comparisons of similar bearings between manufacturers. The ISO 281 bearing ratings are based solely on the physical characteristics of the bearings, removing any manufacturers specific safety factors or empirical data that influences the ratings.

Manufacturers’ ratings are adjusted by diverse and systematic laboratory investigations, checked constantly with feedback from practical experience. Factors taken into account that affect bearing life are material, lubrication, cleanliness of the lubrication, speed, temperature, magnitude of the load and the bearing type.

The operating life of a bearing is the actual life achieved by the bearing and can be significantly different from the calculated life. Comparison with similar applications is the most accurate method for bearing life estimations.

-100	-75	-50	-25	0	25	50	75	100	mm
9000									4000
8000									3500
						445 daN [1000 lb]
7000									3000
6000						445 daN [1000 lb]
									2500
5000
									2000
4000
3000									1500
							SHAFT
2000									1000
1000					BEARING				500
lb									daN
-100	-75	-50	-25	0	25	50	75	100	mm
									P109320

Example Load Rating for Mechanically Retained Needle Roller Bearings

Bearing Life L10	(C/P)p [106 revolutions]
L10	nominal rating life
C	dynamic load rating

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Orbital Motors Type WD, WP and WR

Technical Information

P	equivalent dynamic load
Life Exponent p	10/3 for needle bearings
Bearing Load Multiplication Factor Table
RPM		Factor
50		1.23
100		1.00
200		0.81
300		0.72
400		0.66
500		0.62
600		0.58
700		0.56
800		0.50

Vehicle Drive Calculations

When selecting a wheel drive motor for a mobile vehicle, a number of factors concerning the vehicle must be taken into consideration to determine the required maximum motor RPM, the maximum torque required and the maximum load each motor must support. The following sections contain the necessary equations to determine this criteria. An example is provided to illustrate the process.

Sample application (vehicle design criteria)
vehicle description		4 wheel vehicle
vehicle drive		2 wheel drive
GVW		1,500 lbs.
weight over each drive wheel		425 lbs.
rolling radius of tires		16 in.
desired acceleration		0-5 mph in 10 sec.
top speed		5 mph
gradability		20%
worst working surface		poor asphalt
To determine maximum motor speed
RPM = (2.65 x KPH x G) / rm or RPM = (168 x MPH x G) / ri
KPH	max. vehicle speed (kilometers/hr)
MPH	max. vehicle speed (miles/hr)
G	gear reduction ratio (if none, G = 1)
rm	rolling radius of tire (meters)
ri	rolling radius of tire (inches)

RPM = (168 x 5 x 1) / 16 = 52.5

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Orbital Motors Type WD, WP and WR

Technical Information

To determine maximum torque requirement of motor

To choose a motor(s) capable of producing enough torque to propel the vehicle, it is necessary to determine the Total Tractive Effort (TE) requirement for the vehicle. To determine the total tractive effort, the following equation must be used:

TE = RR + GR + FA + DP (lbs or N)

TE Total tractive effort

RR Force necessary to overcome rolling resistance

GR Force required to climb a grade

FA Force required to accelerate

DP Drawbar pull required

The components for this equation may be determined using the following steps.

Step One: Determine Rolling Resistance

Rolling Resistance (RR) is the force necessary to propel a vehicle over a particular surface. It is recommended that the worst possible surface type to be encountered by the vehicle be factored into the equation.

RR = (GVW / 1000) x R (lb or N)
GVW	gross (loaded) vehicle weight (lb or kg)
R	surface friction (value from Rolling Resistance on page 10)
Rolling Resistance
Concrete (excellent)		10
Concrete (good)		15
Concrete (poor)		20
Asphalt (good)		12
Asphalt (fair)		17
Asphalt (poor)		22
Macadam (good)		15
Macadam (fair)		22
Macadam (poor)		37
Cobbles (ordinary)		55
Cobbles (poor)		37
Snow (2 inch)		25
Snow (4 inch)		37
Dirt (smooth)		25
Dirt (sandy)		37
Mud		37 to 150
Sand (soft)		60 to 150
Sand (dune)		160 to 300

Step Two: Determine Grade Resistance

Grade Resistance (GR) is the amount of force necessary to move a vehicle up a hill or “grade.” This calculation must be made using the maximum grade the vehicle will be expected to climb in normal operation.

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Orbital Motors Type WD, WP and WR

Technical Information

To convert incline degrees to % Grade: % Grade = [tan of angle (degrees)] x 100 GR = (% Grade / 100) x GVW (lb or N)

Example: GR = (20 / 100) x 1500 lbs = 300 lbs

Step Three: Determine Acceleration Force

Acceleration Force (FA) is the force necessary to accelerate from a stop to maximum speed in a desired time.

FA = (KPH x GVW (N)) / (35.32 x t) or FA = (MPH x GVW (lb)) / (22 x t)

t time to maximum speed (seconds)

Example: FA = (5 x 1500 lbs) / (22 x 10) = 34 lbs

Step Four: Determine Drawbar Pull

Drawbar Pull (DP) is the additional force, if any, the vehicle will be required to generate if it is to be used to tow other equipment. If additional towing capacity is required for the equipment, repeat steps one through three for the towable equipment and sum the totals to determine DP.

Step Five: Determine Total Tractive Effort

The Tractive Effort (TE) is the sum of the forces calculated in steps one through three above. On low speed vehicles, wind resistance can typically be neglected. However, friction in drive components may warrant the addition of 10% to the total tractive effort to insure acceptable vehicle performance.

TE = RR + GR + FA + DP (lb or N)

Example: TE = 33 + 300 + 34 + 0 (lbs) = 367 lbs

Step Six: Determine Motor Torque

The Motor Torque (T) required per motor is the Total Tractive Effort divided by the number of motors used on the machine. Gear reduction is also factored into account in this equation.

T = (TE x rm) / (M x G) Nm per motor or T = (TE x ri) / (M x G) lb-in per motor

M	number of driving motors

Example: T = (367 x 16) / (2 x 1) lb-in/motor = 2936 lb-in

Step Seven: Determine Wheel Slip

To verify that the vehicle will perform as designed in regards to tractive effort and acceleration, it is necessary to calculate wheel slip (TS) for the vehicle. In special cases, wheel slip may actually be desirable to prevent hydraulic system overheating and component breakage should the vehicle become stalled.

TS = (W x f x rm) / G (Nm per motor) or TS = (W x f x ri) / G (lb-in per motor)

f coefficient of friction (see Coefficient of friction (f) on page 11)

W loaded vehicle weight over driven wheel (lb or N)

Example: TS = (425 x .06 x 16) / 1 = lb-in/motor = 4080 lbs

Coefficient of friction (f)

Steel on steel	0.3
Rubber tire on dirt	0.5

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Orbital Motors Type WD, WP and WR

Technical Information

Coefficient of friction (f) (continued)

Rubber tire on a hard surface	0.6 - 0.8
Rubber tire on cement	0.7

To determine radial load capacity requirement of motor

When a motor used to drive a vehicle has the wheel or hub attached directly to the motor shaft, it is critical that the radial load capabilities of the motor are sufficient to support the vehicle. After calculating the Total Radial Load (RL) acting on the motors, the result must be compared to the bearing/shaft load charts for the chosen motor to determine if the motor will provide acceptable load capacity and life.

RL = sqrt(W2 + (T / ri)2) lb or RL = sqrt(W2 + (T / rm)2) kg Example: RL = sqrt(4252 + (2936 / 16)2) = 463 lbs

Once the maximum motor RPM, maximum torque requirement, and the maximum load each motor must support have been determined, these figures may then be compared to the motor performance charts and to the bearing load curves to choose a series and displacement to fulfill the motor requirements for the application.

Induced Side Load

In many cases, pulleys or sprockets may be used to transmit the torque produced by the motor. Use of these components will create a torque induced side load on the motor shaft and bearings. It is important that this load be taken into consideration when choosing a motor with sufficient bearing and shaft capacity for the application.

Radius 76 mm [3.00 in]

Torque

1129 Nm

[10000 lb-in]

P109321

To determine the side load, the motor torque and pulley or sprocket radius must be known. Side load may be calculated using the formula below. The distance from the pulley/sprocket centerline to the mounting flange of the motor must also be determined. These two figures may then be compared to the bearing and shaft load curve of the desired motor to determine if the side load falls within acceptable load ranges.

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Orbital Motors Type WD, WP and WR

Technical Information

	Torque	Distance
Side Load =
	Radius
Side Load = 14855 Nm [3333 lbs]

P109322

Hydraulic Equations

Multiplication Factor	Abbreviation	Prefix
1012	T	tera
109	G	giga
106	M	mega
103	K	kilo
102	h	hecto
101	da	deka
10-1	d	deci
10-2	c	centi

Theo. Speed (RPM)	(1000 x LPM) / Displacement (cm3/rev)
	(231 x GPM) / Displacement (in3/rev)
Theo. Torque (lb-in)	(Bar x Disp. (cm3/rev)) / 20 pi
	(PSI x Disp. (in3/rev) / 6.28
Power In (HP)	(Bar x LPM) / 600
	(PSI x GPM) / 1714
Power Out (HP)	(Torque (Nm) x RPM) / 9543
	(Torque (lb-in) x RPM) / 63024

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Orbital Motors Type WD, WP and WR

Technical Information

Shaft Nut Information

The tightening torques listed with each nut should only be used as a guideline. Hubs may require higher or lower tightening torque depending on the material. Consult the hub manufacturer to obtain recommended tightening torque. To maximize torque transfer from the shaft to the hub, and to minimize the potential for shaft breakage, a hub with sufficient thickness must fully engage the taper length of the shaft.

Hub engagement

Incorrect

Correct

P109323

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Orbital Motors Type WD, WP and WR

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35MM TAPERED SHAFTS

M24 x 1.5 Thread

A Slotted Nut

6 [.24] 6 [.22]

42 [1.64]

	36 [1.42]	15 [.59]
Torque Specifications:		32.5 daNm [240 ft.lb.]
1” TAPERED SHAFTS
3/4-28 Thread
A	Slotted Nut		B	Lock Nut				C	Solid Nut
		6 [.24]			23 [.92]		16 [.63]
		5 [.19]
	33 [1.29]				33 [1.29]	24 [.95]	28 [1.10]			33 [1.28]
	28 [1.12]	12 [.48]		29 [1.13]			3.5 [.14]		28 [1.11]	12 [.47]
Torque Specifications:		20 - 23 daNm [150 - 170 ft.lb.]	Torque Specifications:		24 - 27 daNm [180 - 200 ft.lb.]			Torque Specifications:		20 - 23 daNm [150 - 170 ft.lb.]
1-1/4” TAPERED SHAFTS
1-20 Thread
A	Slotted Nut		B	Lock Nut				C	Solid Nut
		6 [.25]			29 [1.14]		16 [.63]
		5 [.19]
	44 [1.73]				40 [1.57]	30 [1.18]	34 [1.34]			44 [1.73]
	38 [1.48]	14 [.55]		35 [1.38]			4 [.16]		38 [1.48]	14 [.55]
Torque Specifications:		38 daNm [280 ft.lb.] Max.	Torque Specifications:		33 - 42 daNm [240 - 310 ft.lb.]			Torque Specifications:		38 daNm [280 ft.lb.] Max.
1-3/8” & 1-1/2” TAPERED SHAFTS
1 1/8-18 Thread
A	Slotted Nut		B	Lock Nut				C	Solid Nut
		6 [.22]			35 [1.38]		16 [.63]
		5 [.19]
	48 [1.90]				51 [2.00]	36 [1.42]	44 [1.73]			48 [1.90]
	42 [1.66]	15 [.61]		44 [1.73]			4 [.16]		42 [1.66]	15 [.61]
Torque Specifications:		41 - 54 daNm [300 - 400 ft.lb.]	Torque Specifications:		34 - 48 daNm [250 - 350 ft.lb.]			Torque Specifications:		41 - 54 daNm [300 - 400 ft.lb.]
										P109324

© Danfoss | December 2019

BC267362166283en-000201 | 15

Technical Information

Orbital Motors Type WD, WP and WR

Optional Motor Features

Speed Sensor Options

Danfoss offers both single and dual element speed sensor options providing a number of benefits to users by incorporating the latest advancements in sensing technology and materials. The 700 & 800 series motors single element sensors provide 60 pulses per revolution with the dual element providing 120 pulses per revolution, with all other series providing 50 & 100 pulses respectively. Higher resolution is especially beneficial for slow speed applications, where more information is needed for smooth and accurate control. The dual sensor option also provides a direction signal allowing end-users to monitor the direction of shaft rotation .

Unlike competitive designs that breach the high pressure area of the motor to add the sensor, the Danfoss speed sensor option utilizes an add-on flange to locate all sensor components outside the high pressure operating environment. This eliminates the potential leak point common to competitive designs. Many improvements were made to the sensor flange including changing the material from cast iron to acetal resin, incorporating a Buna-N shaft seal internal to the flange, and providing a grease zerk, which allows the user to fill the sensor cavity with grease. These improvements enable the flange to withstand the rigors of harsh environments.

P109325

Another important feature of the new sensor flange is that it is self-centering, which allows it to remain concentric to the magnet rotor. This produces a consistent mounting location for the new sensor module, eliminating the need to adjust the air gap between the sensor and magnet rotor. The oring sealed sensor module attaches to the sensor flange with two small screws, allowing the sensor to be serviced or upgraded in the field in under one minute. This feature is especially valuable for mobile applications where machine downtime is costly. The sensor may also be serviced without exposing the hydraulic circuit to the atmosphere. Another advantage of the self-centering flange is that it allows users to rotate the sensor to a location best suited to their application. This feature is not available on competitive designs, which fix the sensor in one location in relationship to the motor mounting flange.

Features / Benefits

•Grease fitting allows sensor cavity to be filled with grease for additional protection.

•Internal extruder seal protects against environmental elements.

•M12 or weatherpack connectors provide installation flexibility.

•Dual element sensor provides up to 120 pulses per revolution and directional sensing.

•Modular sensor allows quick and easy servicing.

16 | © Danfoss | December 2019

BC267362166283en-000201

Technical Information

Orbital Motors Type WD, WP and WR

Optional Motor Features

•Acetal resin flange is resistant to moisture, chemicals, oils, solvents and greases.

•Self-centering design eliminates need to set magnetto-sensor air gap.

•Protection circuitry

Sensor Options

•Z - 4-pin M12 male connector

This option has 50 pulses per revolution on all series except the DT which has 60 pulses per revolution. This option will not detect direction.

•Y - 3-pin male weatherpack connector

This option has 50 pulses per revolution on all series except the DT which has 60 pulses per revolution. This option will not detect direction. Includes a 610 mm [2 ft] cable.

•X - 4-pin M12 male connector

This option has 100 pulses per revolution on all series except the DT which has 120 pulses per revolution. This option will detect direction.

•W - 4-pin male weatherpack connector

This option has 100 pulses per revolution on all series except the DT which has 120 pulses per revolution. This option will detect direction. Includes a 610 mm [2 ft] cable.

Single Element Sensor - Y & Z

Supply voltages	7.5-24 Vdc
Maximum output off voltage	24 V
Maximum continuous output current	< 25 ma
Signal levels (low, high)	0.8 to supply voltage
Operating Temp	-30°C to 83°C [-22°F to 181°F]

Dual Element Sensor - X & W

Supply voltages	7.5-18 Vdc
Maximum output off voltage	18 V
Maximum continuous output current	< 20 ma
Signal levels (low, high)	0.8 to supply voltage
Operating Temp	-30°C to 83°C [-22°F to 181°F]

Sensor Connectors

Z Option

	1
2	4
	3
	P109326

Pin 1	positive	brown or red
Pin 2	n/a	white
Pin 3	negative	blue
Pin 4	pulse out	black

© Danfoss | December 2019

BC267362166283en-000201 | 17

Technical Information

Orbital Motors Type WD, WP and WR

Optional Motor Features

X Option

	1
2	4
	3
	P109327

Pin 1	positive	brown or red
Pin 2	direction out	white
Pin 3	negative	blue
Pin 4	pulse out	black

Y Option

C B A

P109328

Pin A	positive	brown or red
Pin B	negative	blue
Pin C	pulse out	black
Pin D	n/a	white

W Option

D C

B A

P109329

Pin A

positive

brown or red

Pin B

negative

blue

Pin C

pulse out

black

Pin D

direction out

white

Protection Circuitry

The single element sensor has been improved and incorporates protection circuitry to avoid electrical damage caused by:

•reverse battery protection

•overvoltage due to power supply spikes and surges (60 Vdc max.)

•power applied to the output lead

The protection circuit feature will help “save” the sensor from damage mentioned above caused by:

18 | © Danfoss | December 2019

BC267362166283en-000201

Technical Information

Orbital Motors Type WD, WP and WR

Optional Motor Features

•faulty installation wiring or system repair

•wiring harness shorts/opens due to equipment failure or harness damage resulting from accidental conditions (i.e. severed or grounded wire, ice, etc.)

•power supply spikes and surges caused by other electrical/electronic components that may be intermittent or damaged and “loading down” the system.

While no protection circuit can guarantee against any and all fault conditions. The single element sensor from Danfoss with protection circuitry is designed to handle potential hazards commonly seen in real world applications.

Unprotected versions are also available for operation at lower voltages down to 4.5V.

Freeturning Rotor Option

The ‘AC’ option or “Free turning” option refers to a specially prepared rotor assembly. This rotor assembly has increased clearance between the rotor tips and rollers allowing it to turn more freely than a standard rotor assembly. For spool valve motors, additional clearance is also provided between the shaft and housing bore. The ‘AC’ option is available for all motor series and displacements.

There are several applications and duty cycle conditions where ‘AC’ option performance characteristics can be beneficial. In continuous duty applications that require high flow/high rpm operation, the benefits are twofold. The additional clearance helps to minimize internal pressure drop at high flows. This clearance also provides a thicker oil film at metal to metal contact areas and can help extend the life of the motor in high rpm or even over speed conditions. The ‘AC’ option should be considered for applications that require continuous operation above 57 LPM [15 GPM] and/ or 300 rpm. Applications that are subject to pressure spikes due to frequent reversals or shock loads can also benefit by specifying the ‘AC’ option. The additional clearance serves to act as a buffer against spikes, allowing them to be bypassed through the motor rather than being absorbed and transmitted through the drive link to the output shaft. The trade-off for achieving these benefits is a slight loss of volumetric efficiency at high pressures.

Valve Cavity Option

The valve cavity option provides a cost effective way to incorporate a variety of cartridge valves integral to the motor. The valve cavity is a standard 10 series (12 series on the 800 series motor) 2-way cavity that accepts numerous cartridge valves, including overrunning check valves, relief cartridges, flow control valves, pilot operated check fuses, and high pressure shuttle valves. Installation of a relief cartridge into the cavity provides an extra margin of safety for applications encountering frequent pressure spikes. Relief cartridges from 69 to 207 bar [1000 to 3000 psi] may also be factory installed.

P109330

© Danfoss | December 2019

BC267362166283en-000201 | 19

Technical Information

Orbital Motors Type WD, WP and WR

Optional Motor Features

For basic systems with fixed displacement pumps, either manual or motorized flow control valves may be installed into the valve cavity to provide a simple method for controlling motor speed. It is also possible to incorporate the speed sensor option and a programmable logic controller with a motorized flow control valve to create a closed loop, fully automated speed control system. For motors with internal brakes, a shuttle valve cartridge may be installed into the cavity to provide a simple, fully integrated method for supplying release pressure to the pilot line to actuate an integral brake. To discuss other alternatives for the valve cavity option, contact an authorized Danfoss distributor.

Slinger Seal Option

Slinger seals are available on select series offered by Danfoss. Slinger seals offer extendes shaft/shaft seal protection by prevented a buildup of material around the circumference of the shaft which can lead to premature shaft seal failures. The Danfoss slinger seals are designed to be larger in diameter than competitive products, providing greater surface speed and ‘slinging action’.

P109331

Slinger seals are also available on 4-hole flange mounts on select series. Contact a Danfoss Customer

Service Representative for additional information.

20 | © Danfoss | December 2019

BC267362166283en-000201

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

WD Introduction

Overview

The WD motor series is an economical solution for light duty applications requiring high torque. It has a smaller outline yet still provides high efficiency across a wide performance range. Its integral check valves and a provision for a case drain reduce pressure on internal seals to improve product life. The compact package is suitable for industrial and mobile applications including car wash brushes, food processing equipment, conveyors, machine tools, agricultural equipment, sweepers, skid steer attachments, and more.

Features / Benefits

•Built-in check valves offer versatility and increased seal life.

•A variety of mounts and shafts provide flexibility in application design.

•Spool valve design gives superior performance and smooth operation over a wide speed and torque range.

•Integral rotor design provides smooth performance, compact volume and low weight.

•Low port profiling is suitable for applications with limited space.

Typical Applications

agriculture equipment, conveyors, carwashes, sweepers, food processing, grain augers, spreaders, feed rollers, augers, brush drives and more

Series Descriptions

145/146 - Hydraulic Motor (standard)

P109594

Specifications

Performance data is typical. Performance of production units varies slightly from one motor to another. Running at intermittent ratings should not exceed 10% of every minute of operation.

© Danfoss | December 2019

BC267362166283en-000201 | 21

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

Specifications

CODE

Displacement

Max. Speed

Max. Flow

Max. Torque

Max. Pressure

cm3 [in3]

rpm

lpm [gpm]

Nm [lb-in]

bar [psi]

cont.

inter.

cont.

inter.

cont.

inter.

cont.

inter.

peak

025

24.6 [1.5]

1361

1502

35

[9]

40 [11]

34 [301]

47 [416]

100 [1450]

140 [2030]

225 [3260]

032

30.8 [1.9]

1244

1388

40

[11]

45 [12]

42 [372]

57 [505]

100 [1450]

140 [2030]

225 [3260]

040

39.7 [2.4]

1124

1312

45

[12]

53 [14]

66 [584]

79 [699]

124 [1800]

155 [2250]

225 [3260]

050

48.2 [2.9]

900

1012

45

[12]

53 [14]

91 [805]

114 [1009]

138 [2000]

173 [2500]

225 [3260]

060

59.4 [3.6]

880

970

53

[14]

60 [16]

110

[974]

136 [1204]

138 [2000]

173 [2500]

225 [3260]

080

79.6 [4.9]

752

934

60

[16]

75 [20]

141

[1248]

175 [1549]

138 [2000]

173 [2500]

225 [3260]

100

96.0 [5.9]

628

786

60

[16]

75 [20]

170

[1505]

220 [1947]

138 [2000]

173 [2500]

225 [3260]

125

122.8

[7.5]

483

604

60

[16]

75 [20]

225

[1991]

274 [2425]

138 [2000]

173 [2500]

225 [3260]

160

158.0

[9.6]

383

479

60

[16]

75 [20]

284

[2513]

345 [3054]

138 [2000]

173 [2500]

225 [3260]

200

196.5

[12.0]

308

384

60

[16]

75 [20]

312

[2761]

411 [3638]

124 [1800]

166 [2400]

225 [3260]

250

240.5

[14.7]

248

312

60

[16]

75 [20]

317

[2806]

450 [3983]

103 [1500]

155 [2250]

225 [3260]

315

303.2

[18.5]

199

250

60

[16]

75 [20]

396

[3505]

576 [5098]

103 [1500]

155 [2250]

200 [2900]

400

385.8

[23.5]

150

189

60

[16]

75 [20]

480

[4248]

582 [5151]

97 [1400]

121 [1750]

180 [2610]

WD Functional Charts

Performance data is typical. Performance of production units varies slightly from one motor to another. Operating at maximum continuous pressure and maximum continuous flow simultaneously is not recommended. For additional information on product testing please refer to Product Testing on page 7.

025 Displacement Performance

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

		Pressure - bar [psi]									Max. Cont.						Max. Inter.
025		30 [435]		60 [870]			80 [1160]				100 [1450]			120 [1740]		140 [2030]
25 cm3 [1.5 in3] / rev														Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																					<![if ! IE]> <![endif]>Theoretical
		388		350			316				285			255			217
5 [1.3]		9	[80]	18	[159]		25	[221]			32	[283]		35	[310]					203
		186		167			138				115			106
10 [2.6]		9	[80]	20	[177]		26	[230]			34	[301]		37	[327]		46	[407]		407
																					<![if ! IE]> <![endif]>rpm
15 [4.0]		8	[71]	19	[168]		27	[239]			33	[292]		38	[336]		47	[416]		610
		568		536			206				485			447			402
20 [5.3]		8	[71]	19	[168]		26	[230]			33	[292]		38	[336]		47	[416]		813
		780		736			688				658			628			598
25 [6.6]		7	[62]	18	[159]		26	[230]			33	[292]		37	[327]		46	[407]		1016
		970		922			885				855			830			780
30 [7.9]		6	[53]	16	[142]		24	[212]			32	[283]		36	[319]		45	[398]		1220
		1172		1120			1086				1046			1026			981
35 [9.2]		5	[44]	13	[115]		22	[195]			30	[266]		36	[319]		43	[381]		1423
		1361		1318			1285				1248			1212			1172
40 [10.6]				11	[97]		20	[177]			28	[248]		35	[310]		42	[372]		1626
				1502			1477				1439			1404			1365
Rotor		Overall Efficiency -			70 - 100%						40 - 69%				0 - 39%
Width		Theoretical Torque - Nm [lb-in]
4.1		12 [104]		24 [208]			31 [277]				39 [347]			47 [416]			55 [485]
[.160]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																		P109595

22 | © Danfoss | December 2019

BC267362166283en-000201

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

032cc Displacement Performance

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

		Pressure - bar [psi]									Max. Cont.						Max. Inter.
032		30 [435]		60 [870]			80 [1160]				100 [1450]			120 [1740]		140 [2030]
31 cm3 [1.9 in3] / rev														Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																					<![if ! IE]> <![endif]>Theoretical
		300		276			253				236			203			186
5 [1.3]		12	[106]	24	[212]		32	[283]			40	[354]								162
		150		133			100					68
10 [2.6]		12	[106]	25	[221]		33	[292]			42	[372]		48	[425]		55	[487]		325
																					<![if ! IE]> <![endif]>rpm
15 [4.0]		11	[97]	24	[212]		33	[292]			42	[372]		49	[434]		57	[504]		487
		460		433			415				398			375			346
20 [5.3]		9	[80]	24	[212]		32	[283]			41	[363]		49	[434]		56	[496]		649
		616		586			566				543			520			500
25 [6.6]		8	[71]	23	[204]		32	[283]			40	[354]		48	[425]		56	[496]		812
		780		754			736				712			688			658
30 [7.9]		7	[62]	22	[195]		31	[274]			40	[354]		47	[416]		56	[496]		974
		928		910			882				860			824			806
35 [9.2]		7	[62]	21	[186]		31	[274]			38	[336]		46	[407]		55	[487]		1136
		1090		1077			1057				1035			1008			980
40 [10.6]		6	[53]	19	[168]		29	[257]			37	[327]		46	[407]		54	[478]		1299
		1244		1214			1198				1177			1155			1130
45 [11.9]				17	[150]		28	[248]			37	[327]		45	[398]		54	[478]		1461
				1388			1362				1342			1326			1300
Rotor		Overall Efficiency -			70 - 100%						40 - 69%				0 - 39%
Width		Theoretical Torque - Nm [lb-in]
5.1		15 [130]		29 [260]			39 [347]				49 [434]			59 [521]			69 [608]
[.200]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																		P109596

040cc Displacement Performance

Pressure - bar [psi]

Max. Cont.

Max. Inter.

<![if ! IE]>

<![endif]>Inter. Cont. Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Max. Max.

040		21 [300]		41 [600]			62 [900]				83 [1200]			103 [1500]			124 [1800]			155 [2250]
40 cm3 [2.4 in3] / rev																		Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																								<![if ! IE]> <![endif]>Theoretical
		362		344			334				320			304			284			254
8 [2]		10	[89]	20	[177]		29	[257]			40	[354]											191
		182		169			128					90
15 [4]		11	[97]	21	[186]		31	[274]			43	[381]		54		[478]	65		[575]	78	[690]		380
																								<![if ! IE]> <![endif]>rpm
23 [6]		10	[89]	20	[177]		32	[283]			42	[372]		53		[469]	66		[584]	79	[699]		572
		548		535			519				502			488			468			428
30 [8]		7	[62]	19	[168]		31	[274]			41	[363]		52		[460]	64		[566]	78	[690]		763
		738		729			706				688			670			648			614
38 [10]		6	[53]	16	[142]		30	[266]			40	[354]		51		[451]	62		[549]	77	[681]		955
		932		914			896				878			856			834			798
45 [12]		3	[27]	14	[124]		28	[248]			38	[336]		49		[434]	60		[531]	76	[673]		1144
		1124		1102			1084				1062			1043			1014			976
53 [14]				14	[124]		25	[221]			38	[336]		48		[425]	60		[531]	76	[673]		1335
				1312			1290				1266			1242			1218			1168
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
6.6		13 [117]		26 [229]			39 [347]				52 [464]			65 [576]			78 [694]			98 [867]
[.260]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																					P109597

© Danfoss | December 2019

BC267362166283en-000201 | 23

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

050cc Displacement Performance

		Pressure - bar [psi]					Max. Cont.		Max. Inter.
050		21 [300]	41 [600]	62 [900]	83 [1200]	103 [1500]	124 [1800]	138 [2000]	173 [2500]

<![if ! IE]>

<![endif]>Inter. Cont. Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Max. Max.

48 cm3 [2.9 in3] / rev																				Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																										<![if ! IE]> <![endif]>Theoretical
		298		289			276				260			245				229		214		166
8 [2]		14	[124]	26	[230]		40	[354]			55	[354]		65		[575]		82	[726]	88	[779]				158
		148		143			130				116			102					86		75
15 [4]		14	[124]	27	[239]		42	[372]			56	[381]		67		[593]		83	[735]	89	[788]	114	[1009]		313
																										<![if ! IE]> <![endif]>rpm
23 [6]		12	[106]	24	[212]		41	[363]			54	[372]		68		[602]		84	[743]	91	[805]	112	[991]		471
		450		438			423				406			388				374		352		314
30 [8]		9	[80]	21	[186]		38	[336]			52	[363]		65		[575]		81	[717]	88	[779]	110	[974]		629
		602		590			580				555			540				523		508		475
38 [10]		2	[18]	19	[168]		37	[327]			51	[354]		63		[558]		77	[681]	85	[752]	107	[947]		786
		750		732			722				713			693				681		669		635
45 [12]				17	[150]		33	[292]			46	[336]		60		[531]		73	[646]	83	[735]	105	[929]		942
				900			885				875			860				848		830		794
53 [14]							28	[248]			42	[336]		58		[513]		70	[620]	80	[708]	100	[885]		1100
							1012				1000			986				972		960		924
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
6.6		16 [143]		31 [278]			48 [422]				64 [564]			79 [700]				95 [842]		106 [937]		133 [1175]
[.260]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																							P109598

060cc Displacement Performance

		Pressure - bar [psi]					Max. Cont.		Max. Inter.
060		21 [300]	41 [600]	62 [900]	83 [1200]	103 [1500]	124 [1800]	138 [2000]	173 [2500]

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

59 cm3 [3.6 in3] / rev																				Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																										<![if ! IE]> <![endif]>Theoretical
		247		243			236				223			209			192			180		142
8 [2]		17	[150]	30	[266]		46	[407]			63	[558]		82		[726]	99		[876]	109	[965]				128
		122		119			113				107					94			77		65
15 [4]		16	[142]	32	[283]		48	[425]			65	[575]		82		[726]	102		[903]	110	[974]	136	[1204]		254
																										<![if ! IE]> <![endif]>rpm
23 [6]		15	[133]	29	[257]		47	[416]			66	[584]		81		[717]	99		[876]	107	[947]	135	[1195]		382
		371		367			360				347			330			315			304		266
30 [8]		12	[106]	26	[230]		44	[389]			62	[549]		79		[699]	96		[850]	105	[929]	130	[1151]		510
		496		492			484				470			457			436			425		386
38 [10]		8	[71]	23	[204]		40	[354]			60	[531]		77		[681]	94		[832]	104	[920]	128	[1133]		638
		626		618			608				596			582			567			558		500
45 [12]		2	[18]	20	[177]		37	[327]			58	[513]		75		[664]	91		[805]	100	[885]	127	[1124]		764
		752		744			735				727			716			696			680		628
53 [14]				15	[133]		31	[274]			48	[425]		71		[628]	87		[770]	97	[858]	121	[1071]		892
				880			870				862			847			830			800		740
61 [16]				8	[71]		27	[239]			45	[398]		64		[566]	82		[726]	93	[823]	117	[1035]		1020
				970			958				944			932			924			902		842
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
8.0		20 [176]		39 [343]			59 [520]				79 [695]			97 [862]			117 [1038]			131 [1155]		164 [1448]
[.314]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																							P109599

24 | © Danfoss | December 2019

BC267362166283en-000201

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

080cc Displacement Performance

		Pressure - bar [psi]					Max. Cont.		Max. Inter.
080		21 [300]	41 [600]	62 [900]	83 [1200]	103 [1500]	124 [1800]	138 [2000]	173 [2500]

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

80 cm3 [4.9 in3] / rev																				Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																										<![if ! IE]> <![endif]>Theoretical
		187		182			176				167			154			143			136		112
8 [2]		22	[195]	42	[372]		61	[540]			82	[726]		102		[903]	124		[1097]	138	[1221]				95
			90		85			78				70				62			52		42
15 [4]		20	[177]	43	[381]		62	[549]			84	[743]		107		[947]	128		[1133]	141	[1248]	171	[1513]		190
																										<![if ! IE]> <![endif]>rpm
23 [6]		19	[168]	41	[363]		63	[558]			83	[735]		104		[920]	125		[1106]	139	[1230]	175	[1549]		285
		286		276			268				257			248			237			227		202
30 [8]		13	[115]	38	[336]		61	[540]			82	[726]		102		[903]	124		[1097]	137	[1212]	174	[1540]		381
		378		372			364				354			342			334			324		297
38 [10]		8	[71]	35	[310]		58	[513]			80	[708]		101		[894]	123		[1089]	135	[1195]	165	[1460]		476
		474		469			460				448			440			430			416		370
45 [12]		2	[18]	29	[257]		55	[487]			75	[664]		100		[885]	121		[1071]	133	[1177]	163	[1443]		570
		564		558			550				540			530			519			504		472
53 [14]				26	[230]		48	[425]			70	[620]		96		[850]	115		[1018]	130	[1151]	161	[1425]		666
				662			658				648			637			633			609		576
61 [16]				20	[177]		44	[389]			68	[602]		85		[752]	105		[929]	123	[1089]	154	[1363]		761
				752			734				724			716			700			690		663
76 [20]				11	[97]		32	[283]			54	[478]		74		[655]	94		[832]	108	[956]	148	[1310]		951
				934			929				914			904			890			876		814
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
10.4		27 [236]		52 [460]			79 [697]				105 [931]			131 [1155]			157 [1391]			175 [1548]		219 [1941]
[.410]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																							P109600

100cc Displacement Performance

		Pressure - bar [psi]					Max. Cont.		Max. Inter.
100		21 [300]	41 [600]	62 [900]	83 [1200]	103 [1500]	124 [1800]	138 [2000]	173 [2500]

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

96 cm3 [5.9 in3] / rev																				Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																										<![if ! IE]> <![endif]>Theoretical
		154		147			140				132			122			113			104			84
8 [2]		28	[248]	57	[504]		82	[726]			108	[956]		132		[1168]	158		[1398]						79
			76		71			65				54				45			33
15 [4]		25	[221]	56	[496]		80	[708]			106	[938]		130		[1151]	155		[1372]	165	[1460]	205	[1814]		157
																										<![if ! IE]> <![endif]>rpm
23 [6]		23	[204]	50	[443]		76	[673]			104	[920]		128		[1133]	153		[1354]	170	[1505]	212	[1876]		236
		235		226			219				212			203			193			185		162
30 [8]		19	[168]	47	[416]		74	[655]			104	[894]		125		[1106]	152		[1345]	167	[1478]	220	[1947]		316
		313		307			299				291			281			270			264		240
38 [10]		15	[133]	43	[381]		71	[628]			97	[858]		122		[1080]	149		[1319]	167	[1478]	218	[1929]		395
		392		389			384				375			364			353			346		314
45 [12]		11	[97]	37	[327]		70	[620]			94	[832]		120		[1062]	147		[1301]	162	[1434]	210	[1859]		473
		470		465			458				449			437			429			426		398
53 [14]				33	[292]		60	[531]			87	[770]		118		[1044]	143		[1266]	160	[1416]	207	[1832]		552
				550			545				532			518			510			500		473
61 [16]				27	[239]		55	[487]			82	[726]		114		[1009]	139		[1230]	150	[1328]	196	[1732]		631
				628			622				611			598			584			575		552
76 [20]							37	[327]			67	[593]		93		[823]	123		[1089]	138	[1221]	190	[1682]		789
							786				770			758			732			716		670
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
13.0		32 [284]		63 [555]			95 [840]				127 [1123]			157 [1393]			190 [1678]			211 [1867]		264 [2340]
[.510]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																							P109601

© Danfoss | December 2019

BC267362166283en-000201 | 25

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

125cc Displacement Performance

		Pressure - bar [psi]					Max. Cont.		Max. Inter.
125		21 [300]	41 [600]	62 [900]	83 [1200]	103 [1500]	124 [1800]	138 [2000]	173 [2500]

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

123 cm3 [7.5 in3] / rev																				Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																										<![if ! IE]> <![endif]>Theoretical
		120		118			115				109			102			193		94	220	87		61
8 [2]		31	[274]	64	[566]		102	[903]			136	[1204]		161		[1425]			[1708]		[1947]				62
			60		57			54				48				44			38		34
15 [4]		30	[266]	63	[558]		101	[894]			138	[1221]		168		[1487]	201		[1779]	225	[1991]	274	[2425]		123
																										<![if ! IE]> <![endif]>rpm
23 [6]		30	[266]	62	[549]		99	[876]			137	[1212]		167		[1478]	202		[1788]	223	[1974]	272	[2407]		185
		183		179			175				170			165			155			148		126
30 [8]		28	[248]	59	[522]		96	[850]			134	[1186]		165		[1460]	199		[1761]	220	[1947]	269	[2381]		247
		242		240			237				233			228			219			205		174
38 [10]		22	[195]	54	[478]		93	[823]			130	[1151]		161		[1425]	191		[1690]	215	[1903]	263	[2328]		309
		301		299			295				289			282			275			265		244
45 [12]		15	[133]	48	[425]		86	[761]			124	[1097]		156		[1381]	184		[1628]	209	[1850]	257	[2274]		370
		362		360			356				351			345			340			329		301
53 [14]		9	[80]	41	[363]		80	[708]			117	[1035]		149		[1319]	176		[1558]	204	[1805]	243	[2151]		432
		424		422			419				415			410			386			376		342
61 [16]		2	[18]	32	[283]		70	[620]			104	[920]		136		[1204]	165		[1460]	194	[1717]	233	[2062]		493
		483		477			470				463			454			444			437		412
76 [20]				15	[133]		48	[425]			82	[726]		122		[1080]	153		[1354]	178	[1575]	224	[1982]		616
				604			595				584			573			565			556		526
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
16.8		41 [363]		80 [710]			121 [1075]				162 [1436]			201 [1782]			242 [2146]			270 [2388]		338 [2994]
[.660]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																							P109602

160cc Displacement Performance

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

		Pressure - bar [psi]																Max. Cont.				Max. Inter.
160		21 [300]		41 [600]			62 [900]				83 [1200]			103 [1500]			124 [1800]			138 [2000]		173 [2500]
158 cm3 [9.6 in3] / rev																				Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																										<![if ! IE]> <![endif]>Theoretical
		42	94	88	92		120	89			168	85		210		79	246		72		64		35
8 [2]			47		45			42				36				28			20						48
15 [4]		39	[345]	85	[752]		125	[1106]			170	[1505]		211		[1867]	251		[2221]	284	[2513]	345	[3053]		96
																										<![if ! IE]> <![endif]>rpm
23 [6]		38	[336]	79	[699]		123	[1089]			168	[1487]		209		[1850]	248		[2195]	275	[2434]	351	[3106]		144
		143		140			136				130			124			116			107			84
30 [8]		33	[292]	74	[655]		118	[1044]			164	[1451]		207		[1832]	245		[2168]	270	[2390]	338	[2991]		192
		191		188			184				178			171			162			154		134
38 [10]		25	[221]	68	[602]		113	[1000]			159	[1407]		199		[1761]	241		[2133]	262	[2319]	326	[2885]		240
		238		236			233				229			224			218			205		183
45 [12]		14	[124]	59	[522]		105	[929]			150	[1328]		192		[1699]	233		[2062]	253	[2239]	307	[2717]		287
		287		285			283				281			276			270			261		235
53 [14]		5	[44]	50	[443]		92	[814]			140	[1239]		188		[1664]	217		[1920]	242	[2142]	298	[2637]		335
		335		334			332				329			324			319			311		281
61 [16]				35	[310]		75	[664]			120	[1062]		160		[1416]	205		[1814]	233	[2062]	289	[2558]		384
				383			382				378			372			363			358		333
76 [20]				12	[106]		55	[487]			92	[814]		135		[1195]	183		[1620]	204	[1805]	276	[2443]		479
				479			478				475			469			460			455		434
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
20.8		53 [468]		103 [913]			156 [1380]				209 [1848]			259 [2293]			312 [2761]			347 [3073]		435 [3852]
[.820]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																							P109603

26 | © Danfoss | December 2019

BC267362166283en-000201

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

200cc Displacement Performance

		Pressure - bar [psi]				Max. Cont.		Max. Inter.
200		21 [300]	41 [600]	62 [900]	83 [1200]	103 [1500]	124 [1800]	166 [2400]

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

197 cm3 [12.0 in3] / rev																	Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																							<![if ! IE]> <![endif]>Theoretical
		52	76	109	74		164	70			218	64				56		48
8 [2]			38		35			30				23										39
15 [4]		50	[443]	112	[991]		167	[1478]			220	[1947]		270		[2390]	310	[2744]				77
																							<![if ! IE]> <![endif]>rpm
23 [6]		48	[425]	110	[974]		165	[1460]			218	[1929]		274		[2425]	312	[2761]	411	[3637]		116
		115		113			110				105					98		92		62
30 [8]		46	[407]	102	[903]		159	[1407]			216	[1912]		268		[2372]	303	[2682]	406	[3593]		154
		153		150			146				138			132			120			86
38 [10]		36	[319]	92	[814]		151	[1336]			206	[1823]		258		[2283]	290	[2567]	398	[3522]		193
		192		190			186				181			174			163		133
45 [12]		22	[195]	80	[708]		142	[1257]			193	[1708]		236		[2089]	282	[2496]	386	[3416]		231
		230		226			223				218			210			200		167
53 [14]		5	[44]	70	[620]		130	[1151]			176	[1558]		215		[1903]	272	[2407]	374	[3310]		270
		268		266			262				258			250			240		209
61 [16]				58	[513]		118	[1044]			156	[1381]		198		[1752]	253	[2239]	360	[3186]		308
				308			305				299			292			284		256
76 [20]				42	[372]		88	[779]			124	[1097]		173		[1531]	220	[1947]	328	[2903]		385
				384			381				376			372			358		330
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
25.9		66 [582]		128 [1135]			194 [1717]				260 [2298]			322 [2852]			388 [3434]		519 [4597]
[1.020]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																				P109604

250cc Displacement Performance

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

		Pressure - bar [psi]															Max. Cont.				Max. Inter.
250		21 [300]		41 [600]			62 [900]				83 [1200]			97 [1400]			103 [1500]		138 [2000]		155 [2250]
241 cm3 [14.7 in3] / rev																			Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																									<![if ! IE]> <![endif]>Theoretical
		58	62	118	61		193	58			259	55		300		51		47		38		27
8 [2]			31		30			28				23				19								32
15 [4]		61	[540]	122	[1080]		190	[1682]			254	[2248]		302		[2673]	317	[2805]	414	[2513]	450	[3983]		63
																									<![if ! IE]> <![endif]>rpm
23 [6]		58	[513]	116	[1027]		185	[1637]			250	[2213]		295		[2611]	308	[2726]	412	[2434]	446	[3947]		94
			94		93			92				87				83		81		67		57
30 [8]		51	[451]	112	[991]		178	[1575]			245	[2168]		290		[2567]	304	[2690]	406	[2390]	439	[3885]		126
		125		124			121				117			113			110			97		88
38 [10]		40	[354]	98	[867]		169	[1496]			236	[2089]		284		[2513]	298	[2637]	390	[2319]	429	[3797]		158
		158		156			155				151			147			145		136		121
45 [12]		29	[257]	83	[735]		156	[1381]			230	[2036]		277		[2451]	282	[2496]	372	[2239]	414	[3664]		189
		188		187			186				184			180			176		164		150
53 [14]		22	[195]	67	[593]		138	[1221]			214	[1894]		262		[2319]	260	[2301]	355	[2142]	395	[3496]		220
		220		219			217				214			211			209		194		181
61 [16]				52	[460]		123	[1089]			190	[1682]		233		[2062]	244	[2159]	335	[2062]	376	[3328]		252
				248			244				241			237			235		223		210
76 [20]				24	[212]		84	[743]			165	[1460]		202		[1788]	208	[1841]	298	[1805]	335	[2965]		315
				312			309				305			302			300		285		268
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
32.5		80 [712]		157 [1390]			237 [2101]				318 [2813]			371 [3288]			394 [3491]		528 [4677]		594 [5253]
[1.280]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																						P109605

© Danfoss | December 2019

BC267362166283en-000201 | 27

Technical Information

Orbital Motors Type WD, WP and WR

WD Product Line

315cc Displacement Performance

		Pressure - bar [psi]				Max. Cont.		Max. Inter.
315		21 [300]	41 [600]	62 [900]	90 [1300]	103 [1500]	138 [2000]	155 [2250]

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

303 cm3 [18.5 in3] / rev																	Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																							<![if ! IE]> <![endif]>Theoretical
		88	49	174	47		255	43				35				30
8 [2]			25		22			20														25
15 [4]		89	[788]	170	[1505]		263	[2328]			352	[3115]		396		[3505]						50
																							<![if ! IE]> <![endif]>rpm
23 [6]		78	[690]	162	[1434]		246	[2177]			345	[3053]		392		[3469]	532	[4708]	576	[5098]		75
			74		72			69				59				54		33		22
30 [8]		60	[531]	151	[1336]		240	[2124]			339	[3000]		386		[3416]	526	[4655]	566	[5009]		100
		101			98			95				90				84		65		53
38 [10]		60	[531]	142	[1257]		230	[2036]			335	[2965]		380		[3363]	514	[4549]	558	[4938]		125
		125		123			121				115			112				90		80
45 [12]		37	[327]	128	[1133]		220	[1947]			325	[2876]		370		[3275]	500	[4425]	536	[4744]		150
		147		146			143				139			132			118		105
53 [14]		15	[133]	108	[956]		208	[1841]			318	[2814]		355		[3142]	486	[4301]	516	[4567]		175
		175		174			171				166			160			138		127
61 [16]				88	[779]		196	[1735]			300	[2655]		340		[3009]	465	[4115]	494	[4372]		200
				199			197				187			182			166		152
76 [20]				60	[531]		180	[1593]			280	[2478]		326		[2885]	442	[3912]	468	[4142]		250
				250			246				240			236			217		206
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
40.9		101 [897]		198 [1752]			299 [2649]				435 [3846]			497 [4401]			666 [5896]		748 [6623]
[1.610]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																				P109606

400cc Displacement Performance

		Pressure - bar [psi]				Max. Cont.	Max. Inter.
400		21 [300]	41 [600]	69 [1000]	83 [1200]	97 [1400]	121 [1750]

<![if ! IE]>

<![endif]>Flow - lpm [gpm]

<![if ! IE]>

<![endif]>Inter. Cont.

<![if ! IE]>

<![endif]>Max. Max.

386 cm3 [23.5 in3] / rev															Intermittent Ratings - 10% of Operation
		Torque - Nm [lb-in], Speed rpm
																					<![if ! IE]> <![endif]>Theoretical
		105	39	218	37		360	33			417	28				25		17
8 [2]			19		18			14				11								20
15 [4]		99	[876]	207	[1832]		344	[3044]			411	[3637]		480		[4248]	582	[5151]		39
																					<![if ! IE]> <![endif]>rpm
23 [6]		91	[805]	195	[1726]		336	[2974]			403	[3567]		478		[4260]	575	[5089]		59
			59		57			52				43				39		32
30 [8]		72	[637]	186	[1646]		325	[2876]			398	[3522]		466		[4124]	569	[5036]		79
			77		75			73				67				60		49
38 [10]		62	[549]	178	[1575]		314	[2779]			394	[3487]		458		[4053]	560	[4956]		98
		100			97			93				89				81		70
45 [12]		51	[451]	164	[1451]		310	[2744]			378	[3345]		448		[3965]	550	[4868]		118
		120		117			113				109					97		84
53 [14]		38	[336]	142	[1257]		284	[2513]			360	[3186]		429		[3797]	532	[4708]		137
		137		134			131				129			124			113
61 [16]		20	[177]	121	[1071]		260	[2301]			338	[2991]		410		[3629]	511	[4522]		157
		150		154			151				148			138			130
76 [20]				98	[867]		234	[2071]			308	[2726]		384		[3398]	486	[4301]		196
				189			187				185			182			178
Rotor		Overall Efficiency -			70 - 100%						40 - 69%					0 - 39%
Width		Theoretical Torque - Nm [lb-in]
52.1		129 [1142]		252 [2229]			424 [3751]				510 [4513]			596 [5274]			743 [6579]
[2.050]
mm [in]		Displacement tested at 45°C [113°F] with an oil viscosity of 46cSt [213 SUS]																		P109607

WD 145/146 Series

145/146 Series Housings

Dimensions shown are without paint. Paint thickness can be up to 0.13 [.005]. Dimensions are charted in 145/146 Series Technical Data on page 30

(TP) - Taller pilot height. Refer to detailed drawing for dimensional differences.

28 | © Danfoss | December 2019

BC267362166283en-000201