DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Powertrain component life is determined by the load
spectrum each component will experience during the
machine’s service life. Reciprocating engines, such as
spark-ignited gasoline and compression-ignited diesels,
produce alternating torque loads which, when superimposed on the steady driving torque, create alternating stresses in driveline system components which
shorten component life and reliability. High transient
start-up torques and misalignment caused by skewed
rotational axes between driver and driven in electric
motor, hydraulic and pneumatic drives also cause high
imposed forces on driven components. These unwanted
forces loosen bolted joints and cause spline fretting,
clutch disk wear, bearing failure, gear tooth fatigue and
shaft fatigue, among an array of other problems.
Elastomeric fl exible couplings solve these problems.
They prolong driveline component life because they
reduce the magnitude of imposed loads, attenuate vibration in multiple planes, accommodate misalignments
in multiple planes, and act as barriers impeding noise
created by meshing gears, engaging clutches, etc.
Page 87 of 124
Dynafl ex® Elastomeric Flexible
Couplings
Featuring: Dynafl ex® Shear-Type Couplings
Dynafl ex® Spool-Type Couplings
Dynafl ex® Bushing-Type Couplings
Dynafl ex® LCR Series Couplings
Dynafl ex® LCD Series Couplings
Effi cient power transmission and driveline component
durability are among powertrain designers’ most important concerns. Increased durability and up-time are two
characteristics demanded by purchasers of today’s
complex and expensive machinery. These demands can
only be met with reliable, trouble-free, smooth-running
powertrains free from damaging loads which compromise component life.
Elastomeric fl exible couplings are also maintenancefree. They require no lubrication or other maintenance
throughout their service life. Among the large variety of
coupling types available, LORD Corporation’s elastomeric couplings offer the most comprehensive package
of benefi ts available to the powertrain designer. LORD
Corporation’s product lines include fi ve different elastomeric coupling styles which cover a wide range of
application requirements.
Application
Application requirements suggest the coupling style
needed to optimize powertrain performance and
component longevity. Misalignment accommodation,
torsional vibration isolation, transient shock dissipation
and required service life are important parameters
to consider when selecting a coupling to fi ll specifi c
application requirements.
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 88 of 124
LORD engineers can assist you with selecting an appropriate coupling type and confi guration. With extensive
analytical capability and years of experience in designing
products for powertrain vibration, shock and motion
control, LORD engineers offer everything from simple
application assistance to complex system analysis and
specialized product design.
Torsional vibration, transient shock and misalignment
load analyses require specialized computer programs
and engineering experience. LORD engineers can
analyze your system and recommend the right solution,
whether it’s a selection from the standard product line or
a custom design.
LORD Corporation’s standard product lines of elastomeric fl exible powertrain couplings are presented in the
following sections. Many variations of standard products
are available, but not listed as ‘standard.’ Main drive, fan
drive, PTO and accessory drive couplings are available
in a host of custom designs and variations of standard
products. LORD engineers are ready to help you meet
your specifi c application requirements with custom
designs where necessary.
Product Lines
LORD offers fi ve major lines of elastomeric fl exible
couplings. Standard lines are presented on the following
pages. In addition to the standards listed, many
variations are available in each product line.
Dynafl ex® Shear-Type Couplings
LORD Dynafl ex Shear-Type Coupling features a durable
elastomeric fl exing element bonded between two hubs.
These couplings are designed for fractional horsepower
applications requiring smooth starting transition, torsional
vibration isolation and misalignment accommodation.
Typical applications are small electric motor drives,
low-torque mechanisms, power take-offs and auxiliary
equipment drives.
Dynafl ex® Spool-Type Couplings
LORD Dynafl ex Spool-Type Couplings can be arranged
in a variety of confi gurations to create a wide range
of torque-transmitting capability. Elastomeric spool
elements can be purchased in lot sizes for customerassembled coupling designs, or LORD can provide a
complete coupling assembly to meet specifi c application
requirements. Typical applications are large drives
requiring high torque capacity and low torsional stiffness.
Dynafl ex® Bushing-Type Couplings
LORD Dynafl ex Bushing-Type Couplings are bonded
elastomeric elements designed for use in multiple
element coupling confi gurations where high torque
capacity is required. Bushings are available in a
variety of stiffnesses. They can be purchased in lots for
customer-assembled designs, or LORD can provide
complete coupling assemblies designed to meet your
specifi c application requirements. Applications requiring
high torque/high torsional stiffness, but angular, axial and
parallel misalignment accommodation can be designed
using these bushings in a variety of confi gurations
including parallel and series arrangements.
Dynafl ex® LCR Series Couplings
LORD Dynafl ex LCR Series Couplings features an
elastomeric ring with bonded, bush-type inserts allowing
various attachment confi gurations. These couplings
offer a soft torsional spring rate which permits smooth
transmission of driving torque while attenuating
shock torques and providing excellent misalignment
accommodation. These couplings are used in PTO
drives where torsion and cocking fl exibility are required.
They can be mated with a variety of hub confi gurations.
Special high-torque designs are available, as well
as custom designs to meet special application
requirements.
Dynafl ex® LCD Series Couplings
LORD Dynafl ex LCD Series Couplings are the ultimate
coupling for reciprocating engine drives. This coupling
features a bonded elastomeric fl exing element which is
radially precompressed into a fl anged outer housing.
This design produces a low torsional stiffness for
maximum isolation of engine fi ring-pulse-induced
torsional disturbances, torque overload slip protection,
misalignment accommodation, superior shock pulse
attenuation and fatigue life, and is adaptable to a variety
of drive attachment designs. Custom designs are
available to fi t nearly every SAE fl ywheel confi guration
available from most engine manufacturers.
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Coupling Application Guide
Page 89 of 124
Dynafl ex
Shear-Type
Horsepower
Best Application
Area
Outstanding
Capabilities
Versatility Factor
Fail-Safe
Characteristics
Rated: 1/50 to 1 Rated: 50 to 1000 Rated: 10 to 600 Rated: 4 to 135 Rated: 75 to 2000
Low-frequency
vibration,
multidirectional
misalignment
Effectively
accommodates
combinations of
misalignment, high
torsional resilience
Widest application
potential of all
elastomeric couplings
Easily incorporated Easily incorporated Inherent Inherent Slip-torque feature
Low-frequency vibration, high-power drive
systems
Versatility in design
for exact application
requirements
(stiffness and
capacity)
Capacity and resilience can be varied
by changing number
and type of spool
Dynafl ex Elastomeric Flexible Couplings
Dynafl ex
Spool-Type
Dynafl ex
Bushing-Type
Multidirectional
misalignment, high
capacity
High torque capacity
versus size
Numerous
combinations possible
simply by changing
fl exing elements
Dynafl ex
LCR Series
Large misalignment,
safetied drive
requirements
Angular misalignment
capability
Torsional spring rate
varied by changing
modulus or wall
thickness
Dynafl ex
LCD Series
Diesel engines, lowfrequency vibration,
multidirectional
misalignment
Fits many standard
fl ywheels, high
torsional
Large horsepower,
high horsepower
capacity
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 90 of 124
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Typical applications include:
• Information Systems – Motor drive, printer rollers,
indexing devices, linear actuator, drives and card
sorters
• Hospital Bed – Actuator drive
• Dynamometer – Driveline
• Tachometer – Driveline
• Pumps, Blowers, Compressors – Driveline
Features and Benefi ts
• High torsional defl ection
• Easy installation
• Versatile application potential - fractional horsepower
couplings are available in a range of sizes to permit
matching a specifi c coupling to your application.
• One-piece construction – convenient for small
equipment with fractional horsepower requirements.
Specifi ed torque rating allows 15° angular defl ection
for excellent vibration isolation.
• Multi-directional misalignment accommodation – elastomeric fl exibility accommodates misalignments up to
1/32 inch parallel, 2° angular.
• Vibration isolation – low torsional stiffness is achieved
with the shear-type fl exible coupling because
the rubber is loaded in shear. This allows for low
system natural frequencies and excellent driveline
Dynafl ex® Shear-Type Couplings
Rated: 1/50 to 1 hp at 1750 rpm
LORD Dynafl ex Shear-Type Couplings are compact,
one-piece fl exible couplings economically constructed to
isolate low-frequency vibration and accommodate multidirectional misalignment.
These couplings reduce the adverse effects of transient
shock torques, torsional vibration, noise and misalignment associated with small equipment drivelines. This
results in longer service life, smoother, quieter operation,
less maintenance, and lower cost for your end product.
Shear-Type fl exible couplings are useful in many small
equipment driveline applications. Multi-directional
misalignment capabilities make them ideally suited for
fractional horsepower drivelines demanding noise reduction, vibration isolation and maintenance-free operation.
disturbances.
• Shock protection – torsional shock loads are attenuated by torsional defl ection of the elastomer. Torsional
fl exibility smooths out rotational disturbances and
protects system components from early fatigue
failure.
• Noise reduction – no metal-to-metal contact; elastomeric barrier reduces gear noise, transmission and
motor hum between shifts.
• Maintenance-free – elastomer fl exibility accommodates all motion without metal-to-metal wear, eliminates the need for lubrication.
• Long service life – Dynafl ex Shear-Type Couplings
have proven themselves under demanding service
conditions. Elastomers resist effects of abrasive materials, oil and grease.
• Attachment – shear-type fl exible couplings are available in an assortment of bore sizes. Refer to Table 1.
• Constant velocity – inherent design properties
produce a rotational constant velocity.
Page 91 of 124
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex Shear-Type Couplings
Table 1 – Specifi cations and Dimensions
Page 92 of 124
Standard Bore
Coupling Part
Number
SK-1947-6 0.125 0.125
SK-1947 0.187 0.187
SK-1947-19 0.187 0.250
SK-1947-29 0.250 0.250
J-1211-1-2 0.187 0.187
J-1211-1-1 0.250 0.250
J-1211-2-2 0.250 0.250
J-1211-2-11 0.250 0.312
J-1211-2-6 0.250 0.375
J-1211-2-3 0.312 0.312
J-1211-2-12 0.312 0.375
J-1211-2-1 0.375 0.375
J-1211-3-4 0.312 0.312
J-1211-3-14 0.312 0.375
J-1211-3-12 0.312 0.500
J-1211-3-2 0.375 0.375
J-1211-3-8 0.375 0.500
J-1211-3-1 0.500 0.500
J-1211-4-2 0.375 0.375
J-1211-4-35 0.375 0.500
J-1211-4-11 0.375 0.625
J 1211-4-14 0.500 0.500
J-1211-4-4 0.500 0.625
J-1211-4-1 0.625 0.625
J-1211-5-3 0.500 0.500
J-1211-5-4 0.500 0.750
J-1211-5-2 0.625 0.625
J-1211-5-1 0.750 0.750
J-1211-6-12 0.500 0.500
J-1211-6-14 0.625 0.750
J-1211-7-16 0.500 0.750
J-1211-7-3 1.00 1.00
Diameters
A (in) B (in)
C
(in)
0.44 0.56 0.36 0.81 1/50 0.8 0.053 5/40
0.63 0.81 0.56 1.38 1/16 2.50 0.17 10/24
0.75 1.00 0.72 1.75 1/8 5 0.33 10/24
0.88 1.25 0.88 2.13 1/4 10 0.66 1/4-20
1.00 1.38 0.91 2.25 1/3 13 0.87 1/4-20
1.13 1.63 1.00 2.50 1/2 20 1.33 1/4-20
1.38 1.81 1.05 2.69 3/4 30 2.00 5/16-18 J-1211-6-18 0.625 0.625
1.50 2.00 1.11 2.88 1 40 2.66 5/16-18 J-1211-7-9 0.625 0.625
D Ref.
(in)
E Ref.
(in)
F
(in)
HP at
1750 rpm
Ref.
Torque
Rating
(lb-in)
Static
Torsional
Stiffness
(lb-in/deg)
±20%
Set
Screw
Size
Notes: Maximum recommended misalignment - 1/32 inch parallel, 2° angular.
Intrusion should not exceed “E” bore length dimensions.
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
Standard Construction: Hubs - steel; Bores - as listed; Set Screws - one per hub furnished but
not installed; Flexing Element - neoprene.
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Figure 1 – Part Dimensions
Page 93 of 124
Table 2 – Standard Bore Tolerances
Bore Sizes Tolerance
from 0.000 to 0.499 + 0.001 - 0.000
from 0.500 to 0.749 + 0.0015 - 0.0000
from 0.750 to 1.499 + 0.002 - 0.000
A part’s listing in this catalog does not guarantee its availability.
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 94 of 124
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex® Spool-Type Couplings
Rated: 5 to 1000 hp at 2000 rpm
LORD Dynafl ex Spool-Type Couplings provide excellent
protection against destructive torsional vibration in hightorque drive systems.
These couplings are customer-assembled, using
bonded fl exing spools from LORD, and bolted between
customer-supplied metal hubs. Spools should be placed
around recommended bolt circle on hub. Bonded
spools can be installed or replaced with minimum effort.
Coupling assembly has torsional defl ection of 2° under
rated torque.
Page 95 of 124
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex Spool-Type Couplings
Table 1 – Specifi cations and Dimensions
Page 96 of 124
Spool Part
NumberADiameterBThickness
J-4624-1 1.00 0.75 0.38 1/4-20-2A 1.20 1.42 1.70 2.00 2.30 2.62 2.92 3.24 3.56 3.86
J-3424-2 2.00 2.12 0.40 1/2-13-2B 2.30 2.82 3.40 4.00 4.60 5.22 5.84 6.46 7.50 7.72
J-5425-1 3.19 3.00 1.25 1/2-13-2A 3.62 4.41 5.30 6.25 7.18 8.18 9.12 10.20 11.00 12.10
J-5682-1 4.48 2.25 1.25 1/2-20-2A 5.10 6.20 7.45 8.75 10.10 11.50 12.80 14.30 15.70 17.00
Notes: Maximum recommended misalignment - 1/32 inch parallel, 1° angular.
Coupling permits wide latitude in shaft lengths. However, suffi cient spacing between
shaft ends should be provided to allow for shaft end play.
C
Thread
Attachement
Minimum Bolt Circle Diameter for Number of Mounts (in)
3456 7 8 9101112
It is suggested that all designs for Spool-Type Flexible Couplings be reviewed with
LORD Corporation.
Construction: Rubber elements - LORD does not supply hubs, elements only;
Metal parts - steel; Flexing element - environmental-resistant elastomer.
Table 2 – Coupling Confi guration Capacity Chart
Bolt Circle Diameter (in)
Torque (lb-in x 100)
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 97 of 124
Figure 1 – Part Dimensions - J-4624-1 Figure 2 – Part Dimensions - J-3424-2
Figure 3 – Part Dimensions - J-5425-1 Figure 4 – Part Dimensions - J-5682-1
Figure 5 – Typical Assembly with Bonded Flexing Spools
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 98 of 124
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To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex® Bushing-Type Couplings
Rated: 10 to 600 hp at 2000 rpm
LORD Dynafl ex Bushing-Type Couplings accommodate misalignment, cushion torsional shock, and do not
generate or transmit noise. Since relative motion is taken
in the elastomer rather than sliding metal surfaces, no
lubricant is involved or ever required. Dirt and grit cannot
effect the coupling bushings. The elastomer has been
compounded to provide long service life.
Typical applications include driveline installations where
multi-directional misalignment must be accommodated
and torque loads are medium to high.
Specifi cation, selection and dimension information
provided on the following pages facilitate design of the
coupling assembly. The bushings are standard parts,
and the fl anges can be supplied by the end user or by
LORD as a special design.
Page 99 of 124
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 100 of 124
Selection Guide
Compression bushing-type couplings are assembled
by pressing the elastomeric bushings into sockets of a
coupling fl ange. Once assembled, the coupling can be
used two ways:
• Parallel Arrangement
The driving shaft can be connected to all of the bushings, and the driven shaft connected to the coupling
fl ange. This arrangement loads all bushings in parallel
and produces maximum torque capacity and a less
resilient coupling.
• Series Arrangement
This arrangement requires an even number of bushings per fl ange. Mating fl anges of the driving and
driven shafts are attached to alternate bushings. This
arrangement transmits the torque through the bushings in an N x N series arrangement, thereby making
the torque capacity one-half of the parallel arrangement. The coupling is also more fl exible.
When high torque and small space are the controlling factors, the parallel arrangement is recommended.
When misalignment is the controlling factor, the bushings
should be applied in series arrangement.
Table 1 provides selection criteria for parallel arrangement, Table 2 provides data for the series arrangement.
Bushing selection is dependent upon torque requirements, angular, parallel and axial misalignments, as well
as bolt circle diameter, number of bushings and bushing
size. The torque values shown on the charts are nominal.
The bushings are capable of withstanding higher torques
due to the shock loads or other short duration surges.
Torsional Flexibility
Bushing-type couplings are relatively stiff torsionally
compared to other elastomeric couplings. The torsional
spring rate of a coupling assembly can be calculated by
using the equation and data provided on the curves.
Example
Required torque capacity – 3400 lb-in
Misalignment – Angular – 1.75°
Axial – 1/8 in
Parallel – 1/32 in
Proposed Coupling – 7 x 7 Series, J-5737-1, (N = 7)
8 in bolt circle
Torsional Spring Rate, Kθ = N R2 K
2
R
Kθ = 7 (4)2 4000 = 224,000 lb-in/rad.
2
Caution: Shaft length must be considered for potential
whirl problems.
Recommended Misalignment Limits
Misalignment
Single
Coupling
Double
Coupling
* Dependent on shaft length (10 to 30 in).
Angular 1° 1.75°
Parallel 1/64 in 1/32 in
Axial ±1/16 in ±1/8 in
Angular 2° 3.5°
Parallel 3/16 to 1/2 in* 3/8 to 1 in*
Axial ±1/8 in ±1/4 in
Bushing Arrangement
Parellel Series
Figure 1 – Parallel Arrangement
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Figure 2 – Series Arrangement
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex Bushing-Type Couplings
Table 1 – Parallel Arrangement Selection
BUSHING COUPLING SELECTION
Curves Based on Compression
Stress σc = 200 psi
12
N = 2 3 4 5 6 7 8 9 10 11
Torsional Rate:
Torque: T
= σc • N • R • d • l (lb/in)
Where: σc = Comp. Stress (psi)
N = No. of Joints
R = Bolt Circle Radius
Page 101 of 124
lb/in
K
= NR2K
θ
R
(____)
rad
d = joint l.M., O.D.
l = Socket Length
10
J-5915-58
8
6
Bolt Circle (in)
4
2
J-5737-1
J-6250-2
Joint
Number
J-6250-1 6,800 1.25 1.43 1.77 2.13 2.50 2.89 3.27 3.68 4.05 4.45 4.85
J-5915-58 12,000 2.50 3.00 3.54 4.26 5.00 5.76 6.52 7.32 8.08 8.90 9.68
K
R
lb/in 2 3 4 5 6 7 8 9 10 11 12
†
†
Minimum B.C. Dia. "D" For Number of Joints
R
Where r = radius of rubber joint
MIN =
r
180˚
Sin ( )
N
MINIMUM BOLT CIRCLE DIAMETER
0
J-6250-2 4 8 12 16 20 24 28 32 36 40 44 48 52 56
J-5915-58 15 30 45 60 75 90 105 120 135 150 165 180 195 210
Bushing Part No. Torque (lb/in x 100) † Non-Stock Item
Table 2 – Series Arrangement Selection
BUSHING COUPLING SELECTION — N x N SERIES
Curves Based on Compression
Stress σc = 200 psi
8 x 8
12
9 x 9
12
(N x N) 2 x 2 3 x 3 4 x 4 5 x 5 6 x 6 7 x 7
J-5915-58
10 x 10
12 x 12
10
8
6
Bolt Circle (in)
4
2
MINIMUM BOLT CIRCLE DIAMETER
r
R
=
MIN
Where: r = radius of rubber joint
180º
Sin ( )
N
Torsional Rate: K
Torque: T
= σc • R • d • l (lb/in)
Where: σc = Comp. Stress (psi)
N = No. of Joints
R = Bolt Circle Radius
Joint
Number
J-6250-1 6,800 1.77 2.50 3.27 4.05 4.85 5.62 6.41 7.20 8.00 8.78 9.62
J-5915-58 12,000 3.54 5.00 6.52 8.08 9.68 11.25 12.81 14.40 15.98 17.59 19.15
K
R
lb/in 2 3 4 5 6 7 8 9 10 11 12
Minimum B.C. Dia. "D" For Number of Joints
J-5737-1
= R2K
θ
N
2
J-6250-2
N
2
lb/in
(____)
R
rad
d = joint l.M., O.D.
l = Socket Length
0
J-6250-2 4 8 12 16 20 24 28 32 36 40 44 48 52 56
J-5915-58 15 30 45 60 75 90 105 120 135 150 165 180 195 210
Bushing Part No. Torque (lb/in x 100)
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 102 of 124
Figure 3 – Joint Dimensions - J-6250-2
Table 3 – Typical Socket Dimensions
Figure 4 – Joint Dimensions - J-5915-58
Figure 5 – Socket Dimensions
A
Part
Number
J-6250-2 1.00 25.4 0.69 17.5 0.19 4.8 0.13 3.3
J-5915-58 2.19 55.6 1.06 26.9 0.25 6.4 0.19 4.8
LORD does not supply hubs. Rubber elements only.
Socket
Dia.
in mm in mm in mm in mm
B
Radius
C
Chamfer x 45°
Installation Instructions: Use P-80 lube or equivalent mixed to manufacturer’s specifi cations. Immerse rubber
bushing in P-80 solution, making sure entire bushing is wet. Insert bushing into socket by pressing with adequate
force to seat the bushing properly between the retaining lips. Appearance of top and bottom should be uniform after
assembly.
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex® LCR Series Couplings
Rated: 4 to 135 hp at 2000 rpm
LORD Dynafl ex LCR Series Couplings are ring-type
couplings developed to overcome numerous torsional
problems associated with vehicular and industrial driveline systems. These easily installed couplings reduce
noise transmission and increase bearing and driveline
life through greater misalignment accommodation,
isolation of low frequency disturbances, and isolation of
torsional shock.
These highly fl exible elastomeric couplings for accessory drives are also designed to eliminate lubrication and
maintenance.
Features and Benefi ts
• Misalignment accommodation – elastomeric fl exibility
allows for large angular misalignment. For permissible
misalignments, including axial and radial, Refer to
Table 1.
• Vibration isolation – low torsional spring rate is
achieved with the elastomeric ring-type coupling
using rubber in compression. This allows for low
system natural frequencies and isolation of fi rst mode
driveline disturbances in most driveline systems.
• Shock protection – isolates torsional shock, prevents
backlash and protects system components, including
bearings, from fatigue failure.
• Long service life – Dynafl ex LCR Series Couplings
have proven themselves under demanding service
conditions.
• Maintenance-free – elastomer fl exibility accommodates all motion without wear, eliminates the need for
lubrication.
• Noise reduction – no metal-to-metal contact; elastomer attenuates structure-borne noise and isolates
vibration from components that would act as noise
generators.
• Systems Engineering – LORD has in-house computer
capabilities for multi-torsional analysis to assist in
proper coupling selection.
Page 103 of 124
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 104 of 124
Typical Applications
Dynafl ex LCR Series Couplings are useful for a wide
range of rotary drive applications, from lawn and garden
tractors to large construction equipment, including U-joint
replacement. Typical applications include:
Typical End Product Application
Farm Tractor Trouble-Free Hydraulic Pump Devices
Lawn & Garden Tractors Maintenance-Free Main Drive Couplings
Dynamometer Protects Driveline from Failure
Snowmobile Reliable Main Drive Coupling
Vibratory Rollers Absorbs High Torsional Shock Loads in
Eccentric Drive Units
On- & Off-Highway Isolates and Protects Vehicles Auxiliary
Driveline Systems
Industrial Machinery Provides Inexpensive Coupling for
Maximum Angular Misalignment and
Vibration Control
Agriculture Equipment Replaces Conventional Universal Joints
and Provides Torsional Flexibility
Dynafl ex LCR Series Couplings were designed and
developed by LORD and have been in service since the
early 1960s. The basic concept was intended for specifi c
applications requiring low-cost, fl exible couplings to
accommodate all forms of misalignment and provide
torsional resilience.
The coupling design incorporates metal inserts bonded
in an elastomeric ring, which loads the fl exing element
in compression to transmit torque. Misalignment motion
is accommodated by defl ecting the elastomer in shear,
which allows extreme misalignment without high reaction
forces.
Accommodating axial misalignment along the axis of
shafts without high reaction forces is a unique feature
of ring couplings. Figure 2 shows this load defl ection
relationship.
Ring-type couplings accommodate parallel misalignment with relatively low radial reaction forces imposed
on driving and driven equipment. Figure 3 shows typical
radial load defl ection curves. Load defl ection characteristics for other LCR couplings are available upon
request.
Figure 1 – Typical Load/Defl ection Curves
2500
LCR-300-600-046A
2000
Torque Rating
1440 lb-in
1500
1000
Torque (lb-in)
500
0
0 2 4 6 8 10 12
Typical Angle (deg)
Figure 2 – Axial Load Defl ection Curves
500
400
LCR-300-600-046A
300
They are ideally suited for light-duty elastomeric universal
200
Load (lb)
joints, particularly where noise reduction or shock attenuation is required.
Absence of metal-to-metal contact through the coupling
eliminates the need for lubrication and maintenance,
while also reducing noise transmissions. Installation
is accomplished by insertion between simple parallel
fl anges. This lightweight coupling element can be
arranged in a single or double series confi guration to
match specifi c torsional stiffness and misalignment
requirements.
Static Load Defl ection Characteristics of
LCR-300-600-046A Reference Curve
Ring-type couplings isolate torsional vibration and
reduce the harmful effects of torsion shock. Torsional
Figure 3 – Typical Radial Load Defl ection Curves
100
0
0 0.1 0.2 0.3 0.4 0.5 0.6
Typical Deflection (in)
1200
1000
800
LCR-300-600-046A
600
Load (lb)
400
200
resilience is one important characteristic. Figure 1 shows
the torsional spring rate.
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0
0 0.1 0.2 0.3 0.4 0.5 0.6
Typical Load Deflection (in)
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 105 of 124
Specifi cations
Materials: The elastomer used in Dynafl ex LCR Series
Couplings is high-quality natural rubber, which meets
LORD specifi cations (available upon request) and
exceeds SAE standards. Natural rubber is used because
of its excellent physical properties such as tensile
strength, tear and abrasion resistance, fatigue resistance
and low temperature characteristics. Other elastomers
are available to meet special applications needs. The
elastomer-to-metal bonds are even stronger than the
elastomers.
Dynafl ex LCR Series Couplings listed on the following
pages have aluminum alloy inserts. Many other
insert confi gurations are possible to meet attachment
requirements.
Environmental: Ring-type couplings will perform satisfactorily when exposed to the normal fl uid, temperature
and other environmental conditions found in driveline systems. Special oil-resistant elastomers can be
provided where total or partial oil immersion is necessary.
For operation in ambient temperatures exceeding 170°F
(77°C), consult LORD Engineering.
Remote Driven Units: Multiple U-joint shafts (especially
longer shafts) and the speed at which the shaft rotates
(especially higher rpm’s) can create complex stability
problems. To assure satisfactory coupling performance,
all design layouts for remote mounted driven units should
be reviewed by LORD Engineering. LORD analytical
capability is only one part of the engineering service
available on all coupling applications.
LCR ring-type couplings can be selected based on
horsepower or maximum torque requirements. The data
listed on the next page provides the necessary information to select a coupling and design it into your system.
New equipment designs and retrofi ts involving reciprocating engine drives and unusual driveline arrangements
should be analyzed to avoid potential vibration and
misalignment problems. Contact LORD Engineering for
assistance.
Misalignment: Misalignment capability applies for
speeds up to 3500 rpm. Operation up to 7000 rpm is
permitted with reduced misalignment (consult LORD
Engineering).
Note: For speeds above 4000 rpm, shielding is required
and/or balancing of assembly may be required.
Installation: Normal installation involves simple through
bolt attachment to fl anges. For fl ywheel attachment applications, metal inserts can be tapped/counter-bored to
permit easy installation.
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex LCR Series Couplings
Table 1 – Specifi cations and Dimensions
Rated Performance Characteristics
Static
Torsional
Rate - K
lb-in/
rad
θ
N-m/
rad
Axial Rate
lb/in
Part Number
LCR-275-400-004A
LCR-275-400-009A
LCR-275-400-017A
LCR-300-600-046A
LCR-400-800-060A
LCR-400-800-115A
LCR-400-800-135A
LCR-450-600-011A
Torque
Rating
lb-in N-m hp kW
125 14 0.20 0.15 3.5 2.6 4.0 3.0 7.1 5.3 420 47 150 26 375 66 ±5° ±1/8 3.18 ±1/16 1.59
290 33 0.46 0.34 8.1 6.0 9.2 6.9 16.6 12.4 530 60 350 60 850 149 ±4° ±3/32 2.38 ±1/16 1.59
550 62 0.87 0.65 15.3 11.4 17.5 13.0 31.4 23.4 1600 181 950 166 1300 228 ±3° ±3/64 1.19 ±1/32 0.79
1440 163 2.28 1.70 40.0 29.8 45.7 34.1 82.3 61.3 18000 2034 2300 404 4500 790 ±2° ±1/16 1.59 ±1/32 0.79
1900 215 3.01 2.24 52.8 39.3 60.3 45.0 108.5 80.9 24000 2712 1450 254 3000 525 ±2° ±1/16 1.59 ±1/64 0.40
3600 407 5.71 4.26 100.0 74.5 114.2 85.2 205.6 153.3 46000 5197 3600 630 6400 1121 ±2° ±1/16 1.59 ±1/64 0.40
4200 475 6.66 4.97 116.6 87.0 133.3 99.4 239.9 178.9 63000 7118 4200 736 9000 1576 ±1-1/2° ±1/16 1.59 ±1/64 0.40
350 40 0.56 0.42 9.6 7.1 11.1 8.3 20.0 14.9 3100 350 1000 175 420 74 ±5° ±1/8 3.18 ±1/16 1.59
Per
100 rpm
Capacity
1750 rpm 2000 rpm 3600 rpm
hp kW hp kW hp kW in mm in mm
- K
A
N/mm
Page 106 of 124
Radial
Rate - K
lb/in
N/mm
Permissible Misalignments
R
Angular
Axial Parallel
Torque ratings as listed are maximum steady torques per
application requirements. For general applications, dynamic
torques of ±35 percent of the coupling rate torques can be
applied to the listed torque ratings. Shock torques (e.g.,
start-up torque, etc.) of up to 200 percent rated torque are
generally acceptable.
Table 2 – Specifi cations and Dimensions
Part Number
LCR-275-400-004A
LCR-275-400-009A
LCR-275-400-017A
LCR-300-600-046A
LCR-400-800-060A
LCR-400-800-115A
LCR-400-800-135A
LCR-450-600-011A
* See detail drawings by part number for tolerances.
Weight
lb-
Mass
0.52 0.236 0.0020 226.0 4 2.75 69.85 0.32 8.13 4.00 101.60 1.62 41.15 1.00 25.40 0.91 23.11 0.12 3.18 0.75 19.05
0.52 0.236 0.0020 226.0 4 2.75 69.85 0.32 8.13 4.00 101.60 1.62 41.15 1.00 25.40 0.91 23.11 0.12 3.18 0.75 19.05
1.00 0.454 0.0038 430.0 4 2.75 69.85 0.32 8.13 4.00 101.60 1.62 41.15 1.75 44.45 0.91 23.11 0.12 3.18 1.50 38.10
0.91 0.413 0.0041 463.0 6 3.00 76.20 0.39 9.91 4.06 103.12 1.88 47.75 1.53 38.86 1.00 25.40 0.12 3.18 1.28 32.50
1.25 0.567 0.0072 814.0 8 4.00 101.60 0.51 12.95 5.21 132.33 2.74 69.60 1.50 38.10 1.00 25.40 0.12 3.18 1.25 31.75
1.25 0.567 0.0072 814.0 8 4.00 101.60 0.51 12.95 5.21 132.33 2.74 69.60 1.50 38.10 1.00 25.40 0.12 3.18 1.25 31.75
1.40 0.635 0.0099 111.9 8 4.00 101.60 0.51 12.95 5.21 132.33 2.74 69.60 2.00 50.80 1.00 25.40 0.12 3.18 1.75 44.45
0.78 0.354 0.0032 362.0 6 4.50 114.30 0.41 10.30 5.56 141.22 3.40 86.36 0.68 17.27 1.00 25.40 0.12 3.18 0.43 10.92
Inertia
lb-in-
kg
sec
2
Does not include bolts or fl anges.
kg-
mm
No. of
Inserts
2
A
B.C. Dia.BHole Dia.
in mm in mm in mm in mm in mm in mm in mm in mm
LORD does not supply hubs. LORD supplies ring
elements only.
Physical Characteristics (Nominal)*
C
Coupling I.D.DCoupling I.D.
Torque Requirements:
Torque (lb-in) = 63025 x hp
rpm
E
LengthFInsert Dia.GLengthHLength
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To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Figure 4 – Part Dimensions
Page 107 of 124
Figure 5 – Single Coupling Arrangement Figure 6 – Double Coupling Arrangement
Single coupling arrangement consists of two shafts jointed by a single
coupling for maximum economy.
Double coupling/series arrangement uses two couplings separated
by a fl oating shaft. This provides same torque capacity as single hub
arrangement, with twice the permissible angular misalignment and half
the torsional stiffness. Superior to single coupling for control of torsional
vibration.
A part’s listing in this catalog does not guarantee its availability.
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 108 of 124
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Features and Benefi ts
• Protection from torsional shock loads
• Design fl exibility
• Safe for occasional severe overloads
• Vibration isolation – extremely low torsional spring
rate is achieved with the Dynafl ex LCD Series
Coupling, using elastomer in shear. This allows for low
system natural frequencies and isolation of fi rst mode
driveline disturbances.
• Damping at resonance – the elastomer used in
Dynafl ex LCD Series Couplings effectively reduces
vibration at resonance.
• Shock protection – torsional shock loads are attenuated by large shear defl ection of the elastomer. In
the case of severe overloads, equipment damage is
prevented by slippage between the elastomer and
the outer housing.
• Misalignment accommodation – elastomer fl exibility
allows for angular, parallel and axial misalignment.
• Long service life – Dynafl ex LCD Series Couplings
have proven themselves under demanding and
rugged service conditions.
• Maintenance-free – elastomer fl exibility accommodates all motion without wear, eliminates the need for
lubrication.
Dynafl ex® LCD Series Couplings
Rated: 75 to 2000 hp at 2000 rpm
LORD Dynafl ex LCD Series Couplings have been
developed to overcome numerous torsional problems
associated with vehicular and industrial driveline
systems. These couplings increase equipment life
by protecting against torsional vibration, shock and
misalignment.
Typical application attachments include:
• Flywheel to shaft
• Flywheel to hub (splined)
• Shaft to shaft
• Floating shaft
• Noise reduction – no metal-to-metal contact; elastomer attenuates structure-borne noise and isolates
vibration from components that would act as noise
generators.
• Attachment – fi ts many standard SAE fl ywheels.
• Design fl exibility – standard rubber molds are used
to produce each different size coupling shown in
this catalog. Often it is necessary to change metal
components for custom applications. This is common.
• Systems Engineering – LORD has in-house computer
capabilities for multi-mass torsional analysis to assist
in proper coupling selection.
Page 109 of 124
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 110 of 124
Standardization of Proven Concept
Using the experience gained in designing and producing
special Dynafl ex couplings, LORD has developed a new
standard product line of heavy-duty Dynafl ex couplings.
These couplings have a specially designed elastomeric
element bonded to a metal inner member which is then
preloaded and friction-fi t into an outer member.
This unique concept provides low torsional spring rates
which effectively isolate critical vibratory disturbances in
driveline and accessory systems, thus prolonging equipment life. Misalignment and torsional shock loads are
absorbed by shear defl ection in the elastomeric element.
The ability of the coupling to slip at the outer member
with short duration shock overloads protects the driveline and accessory components from premature failure.
The Dynafl ex LCD Series Coupling has been particularly
successful for diesel driven applications.
Dynafl ex LCD Series Couplings are available in 75 to
2000 hp ratings at a nominal 2000 rpm. Each size is also
available in two stiffness values. These are referred to
as the A and C stiffness values. The C stiffness parts are
normally stocked.
Figure 1 – Torsional Load/Defl ection Curves
Torque Load (lb-in) x 000
Angular Defl ection (deg)
Figure 2 – Axial Load Defl ection Curves
Load (lb)
Load Defl ection Data
Figures 1 through 3 illustrate the torque or load versus
defl ection characteristics for the -A and -C stiffnesses of
the LCD-0400 size couplings. The general characteristics
of these curves are typical for all Dynafl ex LCD Series
Couplings.
Figure 1 shows the linearity of the coupling spring rate
at (and well above) the rated capacity of 12,500 lb-in
torque. The curves also demonstrate the unique overload
slip characteristic at about 60,000 lb-in torque. It should
be noted, however, that the overload protection results
from slipping of the coupling. This slipping generates
heat, and therefore continuous running at overload could
be injurious to the coupling.
Figures 2 and 3 illustrate the fl exibility of Dynafl ex LCD
Series Couplings to accommodate axial and radial
misalignment. The -A variation is made in a softer elastomer to produce a lower torsional spring rate and therefore had the lower axial and radial spring rates. All spring
rates are ideally linear over the normal operating range of
defl ection.
Defl ection (in)
Figure 3 – Radial Load Defl ection Curves
Load (lb)
Defl ection (in)
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 111 of 124
Dynamic Torsional Stiffness, K
θ
The dynamic torsional stiffness is higher than the static
stiffness at room temperature. When the LCD Series
Couplings are attached to diesel engine fl ywheels, the
elastomer gets warm. At an operating temperature in the
170° to 200°F range, the dynamic stiffness is nearly the
same as the static stiffness at room temperature. The
stiffness values shown in the performance characteristics
chart are for computer modelling and in other types of
torsional analysis work.
Static Load Defl ection Characteristics of
LCD-0400-01-A & -C and LCD-0400-04-A & -C
Curves of other LCD parts show similar characteristics
and are available upon request.
Typical Applications
Dynafl ex LCD Series Couplings are useful for a wide
range of rotary drive applications, from off-highway truck
drivelines to auxiliary compressor drives on diesel locomotives. The soft torsional stiffness of these couplings
makes them ideally suited for diesel applications with
remotely mounted driven components. Typical applications include:
Typical End Product Application
Mining Dump Truck Increases Engine and Transmission Life
Diesel Locomotive Eliminates Accessory Driveline Failure
Portable Air Compressor Replaces Short-Lived Gear Coupling;
4-Wheel Drive Farm
Tractor
Military Vehicle Eliminates Accessory Shaft Breakage
Dynamometer Prevents Driveline Failure
Mining Dump Truck Prolongs U-Joint Life
In addition, Dynafl ex LCD Series Couplings have been
used in these types of applications:
• Main Drive
Engine – Generator Engine – Compressor
Engine – Transmission Engine – Pump
Electric Motor – Pump Electric Motor – Compressor
• Accessories
Starters Fans and Blowers
Alternators Power Take-Offs
Smooth Operation
Reduces Noise and Extends Drive Train
Life
A part’s listing in this catalog does not guarantee its availability.
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 112 of 124
Selection Guide
This selection guide can be used to determine the size
and series coupling to suit your general requirements.
Final selection of the specifi c coupling to satisfy all of
the application requirements generally necessitates
a system engineering analysis. These computerized
analyses of torsional systems can be provided by LORD
Corporation’s Engineering Department.
Figure 4 – Typical Dynafl ex LCD Coupling
X Series - Type I Housing Couplings (0075, 0150,
0200, 0300) (With Tapered Inner Member)
Figure 6 – Typical Dynafl ex LCD Coupling
01 Series - Type III Housing Couplings (400 hp
and above)
Note: 0400-04 has tapered inner member. 0600 and above do not have
tapered inner member.
Figure 7 – Typical Dynafl ex LCD Composite
Outer Member (0075, With Tapered Inner Member)
Note: The LCD-0075-13 design is the same as the “20 Series” except
the outer member fl ange O.D. is very small.
Figure 5 – Typical Dynafl ex LCD Coupling
XX Series - Type II Housing Couplings (0075,
0150, 0200, 0300) (With Flanged Inner Member)
Table 1 – Split Tapered Bushings
Dynafl ex
LCD Series
Coupling
Part
Number
LCD-0075 Q1
LCD-0150-XR Q1
LCD-0200-XR R1
LCD-0300-XR R1
LCD-0400-XX R1
P/N
3/4 - 2-1/16 19.05 - 52.3 2-1/8 - 2-11/16 54.0 - 68.3
3/4 - 2-1/16 19.05 - 52.3 2-1/8 - 2-11/16 54.0 - 68.3
1-1/8 - 2-13/16 28.16 - 71.4 2-7/8 - 3-3/4 73.0 - 95.2
1-1/8 - 2-13/16 28.16 - 71.4 2-7/8 - 3-3/4 73.0 - 95.2
1-1/8 - 2-13/16 28.16 - 71.4 2-7/8 - 3-3/4 73.0 - 95.2
Browning Bushing
Bore Range
Type 1 Dia. Type 2 Dia.
in mm in mm
Application Note: Sustained operation at torsional resonance can
produce vibratory torques which might cause damage to the coupling
and other driveline components. Please consult LORD Engineering for
application review and approval.
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Dynafl ex LCD Series Couplings
Table 2 – Rated Performance Characteristics
Page 113 of 124
Part Number*
Variation
-XXR-A
-XXR-C
-X-C
-XXR-A
-XXR-C
-XXR-A
-XXR-C
-XXR-A
-XXR-C
-XX-A
-XX-C
-X-C
-X-C
-X-C
-X-C
-X-C
Size
LCD-0075 -XR-A
LCD-0075 -XR-C
LCD-0075
LCD-0150 -XR-A
LCD-0150 -XR-C
LCD-0200 -XR-A
LCD-0200 -XR-C
LCD-0300 -XR-A
LCD-0300 -XR-C
LCD-0400 -X-A
LCD-0400 -X-C
LCD-0600 -X-A
LCD-0800 -X-A
LCD-1000 -X-A
LCD-1500 -X-A
LCD-2000 -X-A
* Please consult LORD engineering for application review,
approval and availability.
Prolonged exposure to temperatures in the 0°F range and
below produces a signifi cantly reduced slip torque prior to
driveline warm-up. This condition may result in the coupling’s
inability to transmit adequate drive torque for applications
experiencing unusual cold temperature related parasitic
loading.
Blind assembly style with a notched periphery provides
trouble-free, sliding assembly on fl ywheel drive pins when
bolted access is not possible. Outer member is a composite
material.
Figure
Capacity per
No.
100 rpm
hp kW lb-in N-m lb-in N-m lb-in/rad N-m/rad lb/in N/mm lb/in N/mm
4
4
4
4
7 4.05 3.02 2,500 282 8,000 900 21,000 2,373 2,100 368 10,000 1,750
4
5
4
5
4
5
4
5
4
5
4
5
6
6
6
6
6
6
6
6
6
6
6
6
6
6
4.05 3.02 2,500 282 8,000 900 11,000 1,243 875 153 5,800 1,015
4.05 3.02 2,500 282 8,000 900 21,000 2,373 2,100 368 10,000 1,750
8.09 6.04 5,000 565 20,000 2,260 22,000 2,486 1,750 306 11,500 2,012
8.09 6.04 5,000 565 20,000 2,260 40,000 4,520 4,000 700 20,000 3,500
11.11 8.29 7,000 791 28,000 3,164 35,000 3,955 2,600 455 14,000 2,450
11.11 8.29 7,000 791 28,000 3,164 60,000 6,780 5,000 875 22,000 3,850
15.87 11.84 10.000 1,130 40,000 4,520 50,000 5,650 3,500 612 11,500 2,012
15.87 11.84 10,000 1,130 40,000 4,520 90,000 10,170 8,800 1,540 20,000 3,500
19.83 14.79 12,500 1,412 60,000 6,780 60,000 6,780 1,750 306 12,500 2,188
19.83 14.79 12,500 1,412 60,000 6,780 110,000 12,430 5,700 1,000 25,000 4,375
31.75 23.69 20,000 2,260 85,000 9,600 100,000 11,290 1,600 280 12,500 2,188
39.67 29.58 25,000 2,825 100,000 11,300
52.91 39.47 32,000 3,616 150,000 16,950
79.37 59.21 50,000 5,650 200,000 22,600
103.15 77.22 65,000 7,345 200,000 22,600
Torque Rating
T
N
Use Wood’s Sure-Grip
See detail drawings by part number for tolerances.
Pilot diameter tolerances are + .000/ -.005 in for -A Series
diameters and + .005/ -.000 in for -C Series diameters.
Tapered.
Refer to SAE J620c for fl ywheel numbers 6-1/2, 10, 11-1/2,
16; to SAE J927a for numbers 60, 80, 100, 120, 160. See
Tables 5 and 6.
Unless otherwise noted:
.xx dim ± 0.030 in (± 0.762 mm)
.xxx dim ± 0.015 in (± 0.381 mm)
Sure-Grip is a trademark of Altra Industrial Motion, Inc.
Approximate
Slip Torque
®
Bushing type SK or equivalent.
1,250,000
Torsional Rate
130,000
250,000
250,000
450,000
360,000
650,000
675,000
θ
14,690
28,250
28,250
50,850
40,680
73,450
76,275
141,250
It is advisable to refer to drawing of coupling before
ordering since it is not practical to show all details in this
catalog.
Defi nition of Part Numbering System
Part Type hp Rating
LCD -0400
2,000
6.500
3,250
9,000
4,500
13,000
8,500
15,000
K
A
1,140
1,575
2,275
1,488
2,625
K
Axial Rate
350
14,000
30,000
600
20,000
35,000
788
28,000
50,000
58,000
100,000
Attachment
Variation
-X
-XX
Radial Rate
K
Torque Requirements:
Torque (lb-in) = 63025 x hp
rpm
R
2,450
5,250
3,500
6,125
4,900
8,750
10,150
17,500
Torsional
Stiffness
Variation
-A
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DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Table 3 – Specifi cations and Dimensions
Page 114 of 124
Part Number*
Size
LCD-0075
LCD-0075
LCD-0075
LCD-0150 -XR-A
LCD-0150 -XR-C
LCD-0200 -XR-A
LCD-0200 -XR-C
LCD-0300 -XR-A
LCD-0300 -XR-C
LCD-0400 -X-A
LCD-0400 -X-C
LCD-0600 -X-A
LCD-0800 -X-A
LCD-1000 -X-A
LCD-1500 -X-A
LCD-2000 -X-A
Variation lb kg
-XR-A
-XXR-A
-XR-C
-XXR-C
-X-C 6.3 2.87 0.04 0.004 0.07 0.007 10.340 262.58 9.625 244.48 2.813 71.45 3.313 84.14 2.688 68.28 2.00 50.8
-XXR-A2013.8
-XXR-C
-XXR-A
-XXR-C
-XXR-A
-XXR-C
-XX-A
-XX-C
-X-C
-X-C
-X-C
-X-C
-X-C
Physical Characteristics (Nominal)
Weight
Mass
lb-in-
sec
6.5
2.95
8.3
3.76
6.5
2.95
8.3
3.87
9.07
6.26
20
9.07
13.8
6.26
21169.52
7.26
21169.52
7.26
331814.96
8.16
331814.96
8.16
454820.41
21.77
454820.41
21.77
62 28.11 1.12 0.127 5.23 0.591 15.500 393.70 14.625 371.47
81 36.60 1.25 0.141 8.21 0.928 17.000 431.80 16.250 412.75 7.500 190.50 8.500 215.90 9.50 241.30 3.50 88.90
105 47.62 3.51 0.397 14.57 1.647 19.000 482.60 18.125 460.37 8.825 224.16 10.125 257.18 11.52 292.61 4.00 101.60
160 72.58 6.23 0.704 32.50 3.673 22.500 622.22 21.375 542.93 10.000 254.00 11.500 292.10 13.25 336.55 4.25 107.95
160 72.58 7.40 0.836 31.48 3.557 22.500 622.22 21.375 542.93 11.500 292.19 13.250 336.55 15.25 387.35 4.25 107.95
Inertia
Inner
Member
kg-m
2
0.04 0.004
0.04 0.004
0.13
0.015
0.08
0.009
0.13
0.015
0.08
0.009
0.22
0.025
0.09
0.010
0.22
0.025
0.09
0.010
0.59
0.067
0.25
0.028
0.59
0.067
0.25
0.028
0.57
0.065
0.93
0.150
0.57
0.065
0.93
0.150
A
Outer
Member
lb-in-
2
sec
0.21
0.35
0.21
0.35
0.29 0.033 12.375 314.33 11.625 295.28
0.29 0.033 12.375 314.33 11.625 295.28
0.69 0.078 13.875 352.42 13.125 333.38
0.69 0.078 13.875 352.42 13.125 333.38
0.92 0.104 13.875 352.42 13.125 333.38
0.92 0.104 13.875 352.42 13.125 333.38
2.83 0.320 13.875 352.42 13.125 333.38
2.83 0.320 13.875 352.42 13.125 333.38
2
kg-m
2
0.024
0.039
0.024
0.039
Pilot O.D.
in mm in mm in mm in mm in mm in mm
8.500
215.90
12.375
314.33
8.500
215.90
12.375
314.33
B
B.C. Dia.
7.875
11.625
7.875
11.625
200.03
295.28
200.03
295.28
2.875
2.875
2.875
2.500
2.875
2.500
4.000
2.500
4.000
2.500
4.000
4.000
4.000
4.000
6.000
4.000
6.000
4.000
6.000
C
Dia.
73.03
73.03
73.03
63.50
73.03
63.50
101.60
63.50
101.60
63.50
101.60
101.60
101.60
101.60
152.40
101.60
152.40
101.60
152.40
No
Counter
Bore
No
Counter
Bore
4.25
4.57
4.25
4.57
5.50
5.33
5.50
5.33
6.00
6.69
6.00
6.69
8.00
6.00
8.00
6.00
E
Dia.
No
Counter
Bore
No
Counter
Bore
107.95
120.65
107.95
120.65
139.70
135.38
139.70
135.38
152.40
170.00
152.40
170.00
203.20
152.4
203.20
152.4
D
Dia.
3.375 85.73
3.375 85.73
3.375
85.73
3.400
86.36
3.375
85.73
3.400
86.36
4.625
117.47
3.400
86.36
4.625
117.47
3.400
86.36
4.625
117.47
5.125
130.18
4.625
117.47
5.125
130.18
7.000
177.80
4.625
117.47
7.000
177.80
4.625
117.47
7.000 177.80 8.00 203.20 3.00 76.20
F
Length
2.62 66.55
2.62 66.55
2.80 71.12
2.80 71.12
2.80 71.12
2.80 71.12
3.06 77.72
3.06 77.72
2.75 69.85
2.75 69.85
* Please consult LORD engineering for application review,
approval and availability.
Prolonged exposure to temperatures in the 0°F range and
below produces a signifi cantly reduced slip torque prior to
driveline warm-up. This condition may result in the coupling’s
inability to transmit adequate drive torque for applications
experiencing unusual cold temperature related parasitic
loading.
Blind assembly style with a notched periphery provides
trouble-free, sliding assembly on fl ywheel drive pins when
bolted access is not possible. Outer member is a composite
material.
Use Wood’s Sure-Grip
®
Bushing type SK or equivalent.
See detail drawings by part number for tolerances.
Pilot diameter tolerances are + .000/ -.005 in for -A Series
diameters and + .005/ -.000 in for -C Series diameters.
Tapered.
Refer to SAE J620c for fl ywheel numbers 6-1/2, 10, 11-1/2,
16; to SAE J927a for numbers 60, 80, 100, 120, 160. See
Tables 5 and 6.
Unless otherwise noted:
.xx dim ± 0.030 in (± 0.762 mm)
.xxx dim ± 0.015 in (± 0.381 mm)
Sure-Grip is a trademark of Altra Industrial Motion, Inc.
It is advisable to refer to drawing of coupling before
ordering since it is not practical to show all details in this
catalog.
Defi nition of Part Numbering System
Part Type hp Rating
LCD -0400
Attachment
Variation
-X
-XX
Torsional
Stiffness
Variation
-A
Torque Requirements:
Torque (lb-in) = 63025 x hp
rpm
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Table 4 – Specifi cations and Dimensions
Page 115 of 124
Physical Characteristics (Nominal)
Part Number*
G
Length
H
Length
I
Length
J
Length
K
Hole Dia.
Size Variation in mm in mm in mm in mm in mm in mm
No
LCD-0075
LCD-0075 -XR-C
LCD-0075
LCD-0150 -XR-A
LCD-0150 -XR-C
LCD-0200 -XR-A
LCD-0200 -XR-C
LCD-0300 -XR-A
LCD-0300 -XR-C
LCD-0400 -X-A
LCD-0400 -X-C
LCD-0600 -X-A
LCD-0800 -X-A
LCD-1000 -X-A
LCD-1500 -X-A
LCD-2000 -X-A
* Please consult LORD engineering for application review,
approval and availability.
Prolonged exposure to temperatures in the 0°F range and
below produces a signifi cantly reduced slip torque prior to
driveline warm-up. This condition may result in the coupling’s
inability to transmit adequate drive torque for applications
experiencing unusual cold temperature related parasitic
loading.
Blind assembly style with a notched periphery provides
trouble-free, sliding assembly on fl ywheel drive pins when
bolted access is not possible. Outer member is a composite
material.
-XR-A
-XXR-A
-XXR-C
-X-C – – 0.75 19.1 – – – – 0.710 18.03 6 0.330 (8.38) 3 8 6.80 172.7
-XXR-A
-XXR-C
-XXR-A
-XXR-C
-XXR-A
-XXR-C
-XX-A
-XX-C
-X-C
-X-C
-X-C
-X-C
-X-C
0.375 9.53 0.125 3.18 0.25 6.35
0.375 9.53 0.125 3.18 0.25 6.35
0.1875 4.76 0.1875 4.76 0.125 3.18
0.1875 4.76 0.1875 4.76 0.125 3.18
0.0625 1.59 0.1875 4.76 – –
0.0625 1.59 0.1875 4.76 – –
0.125 3.18 0.1875 4.76 0.25 6.35
0.125 3.18 0.1875 4.76 0.25 6.35
0.125 3.18 0.50 12.70 – –
0.125 3.18 0.50 12.70 – –
– – 0.50 12.70 – – 1.00 25.40 0.406 10.31 12 1/2-13 UNC-2B 6 120 – –
– – 0.50 12.70 – – 1.00 25.40 0.406 10.31 8 1/2-13 UNC-2B 8 – – –
0.125 3.18 0.25 6.35 – – 1.00 25.40 0.406 10.31 12 5/8-11 UNC-2B 8
0.125 3.18 0.50 12.70 0.50 12.70 1.50 38.10 0.644 16.36 6 5/8-11 UNC-2B 8 18 or 180 – –
0.125 3.18 0.50 12.70 0.50 12.70 1.50 38.10 0.644 16.36 6 3/4-10 UNC-2B 8 18 or 180 – –
Counter
Counter
Use Wood’s Sure-Grip
See detail drawings by part number for tolerances.
Pilot diameter tolerances are + .000/ -.005 in for -A Series
diameters and + .005/ -.000 in for -C Series diameters.
Tapered.
Refer to SAE J620c for fl ywheel numbers 6-1/2, 10, 11-1/2,
16; to SAE J927a for numbers 60, 80, 100, 120, 160. See
Tables 5 and 6.
Unless otherwise noted:
.xx dim ± 0.030 in (± 0.762 mm)
.xxx dim ± 0.015 in (± 0.381 mm)
Sure-Grip is a trademark of Altra Industrial Motion, Inc.
No
Counter
Bore
No
Counter
Bore
0.75
2.31
0.75
2.31
0.75
2.56
0.75
2.56
0.75
2.56
0.75
2.56
0.88
0.75
0.88
0.75
®
Bushing type SK or equivalent.
0.321
0.406
Bore
No
0.321
0.406
Bore
19.05
0.406 10.31 8
58.72
19.05
0.406 10.31 8
58.72
19.05
0.406 10.31 16
65.07
19.05
0.406 10.31 16
65.07
19.05
0.406 10.31 16
65.07
19.05
0.406 10.31 16
65.07
22.23
0.406 10.31 12
19.05
22.23
0.406 10.31 12
19.05
8.15
10.3168
8.15
10.3168
L
No. of
Holes
–
M
Hole Size
in (mm)
3/8 - 16
UNC-2B
3/8 - 16
UNC-2B
3/8-16 UNC-2B
0.394 (10.00)
3/8-16 UNC-2B
0.394 (10.00)
3/8-16 UNC-2B
0.394 (10.00)
3/8-16 UNC-2B
0.394 (10.00)
3/8-16 UNC-2B
0.660 (16.76)
3/8-16 UNC-2B
0.660 (16.76)
1/2-13 UNC-2B
3/8-16 UNC-2B63
1/2-13 UNC-2B
3/8-16 UNC-2B63
It is advisable to refer to drawing of coupling before
ordering since it is not practical to show all details in this
catalog.
Part Type hp Rating
LCD -0400
N
No. of
Holes
3
3
3
6
3
6
3
6
3
6
3
6
3
6
Defi nition of Part Numbering System
Fits
SAE
Flywheel
No.
6-1/2
10
6-1/2
10
10 8.50 215.9
10 8.50 215.9
11-1/2 OR
60/80/100
11-1/2 OR
60/80/100
11-1/2 OR
60/80/100
11-1/2 OR
60/80/100
60/80/100 – –
60/80/100 – –
14 or 140 with
Adapter
Attachment
Variation
-X
-XX
Torque Requirements:
P
Ref. Dia.
6.50 165.1
6.50 165.1
9.38 238.3
9.38 238.3
11.38 289.1
11.38 289.1
––
Torsional
Stiffness
Variation
-A
Torque (lb-in) = 63025 x hp
rpm
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 116 of 124
Dynafl ex LCD Series Couplings
Installation Guide
Specifi cations
Materials: The elastomer used in the Dynafl ex LCD
Series Coupling is a high-quality natural rubber which
meets LORD specifi cations (available upon request) and
exceeds SAE standards. Natural rubber is used because
of its excellent physical properties, such as tensile
strength, tear and abrasion resistance, fatigue resistance
and low temperature characteristics. The elastomer-tometal bonds are even stronger than the elastomers.
Standard LCD catalog parts are all made in two stiffnesses of natural rubber. The A elastomer is per LORD
Spec MAP092, having a durometer of approximately
45. The C elastomer is LORD Spec MAP094, having a
durometer of approximately 57. The metal parts for this
series are of alloy steel or ductile iron.
Environmental: Extensive experience with similar
parts indicates that heavy-duty Dynafl ex couplings will
perform satisfactorily when exposed to the normal fl uid,
temperature and other environmental conditions found in
driveline systems. For operation in ambient temperatures
exceeding 170°F (77°C), consult LORD Corporation.
Dynafl ex LCD Series Couplings are often recommended
for use in applications where the temperature is above
170°F (77°C). Temperatures above 200°F (93°C) could
present problems. Customers should know what the
ambient operating temperature is and whether additional air circulation can be provided. Consultation with
LORD Corporation engineers is necessary if the ambient
temperature is above 170°F (77°C).
Misalignment: Misalignment capability applies to
speeds up to 2500 rpm. Operation up to 3500 rpm
is permitted with reduced misalignment. (Consult
LORD when a potential application requires special
consideration).
At normal rated operating conditions, the Dynafl ex
LCD Series Couplings are designed to accommodate
misalignment.
Angular: 1-1/2° maximum
Parallel: 1/64 inch
Axial: +1/16 inch dynamic
+1/8 inch static
Testing/Performance: Periodic load defl ection tests are
run to assure consistency of torsional spring rate and slip
torque characteristics.
Damping Coeffi cient, Cθ: The natural rubber elastomer
used in LCD couplings offer hysteresis damping which
dissipates energy at resonance.
The “damping coeffi cient” is a function of many variables. Among them are dynamic strain, frequency,
elastomer type and stiffness, temperature and torque
loading. Damping coeffi cients for this series have been
determined and can be provided for torsional analysis
work by contacting LORD.
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 117 of 124
Installation
For engine applications, the outer member is usually
bolted directly to the fl ywheel; for other applications, to
a suitable adaptor. The inner member normally attaches
to the driven shaft. The smaller LCD couplings generally
have a tapered bore, which accommodates a standard
split tapered bushing which grips the drive shaft. (Refer
to Table 1 - Split Tapered Bushings). This confi guration
provides easy installation.
Figures 15 and 16 on the next page show typical
installations involving universal joints.
Figure 8
This arrangement must not be used. Suitable bearing
supports are required to react cardan-induced cocking
loads. Consult LORD Engineering for application review.
Figure 9 – Flywheel Drawing for Tables 5 and 6
Table 5 – Flywheels for Engine Mounted Torque
Converters - SAE J927 Nov 88
Converter
Flywheel
No.
20 9.50 241.30 8.750 222.25 12 5/16-18
40 10.375 263.52 9.625 244.48 12 5/16-18
60 13.875 352.42 13.125 333.38 12 3/8-16
80 13.875 352.42 13.125 333.38 12 3/8-16
100 13.875 352.42 13.125 333.38 12 3/8-16
120 15.500 393.70 14.625 371.48 12 3/8-16
140 18.375 466.72 17.250 438.15 12 1/2-13
160 20.375 517.52 19.250 488.95 12 1/2-13
180 22.500 571.52 21.375 542.92 12 5/8-11
210 26.500 673.10 25.250 641.35 12 5/8-11
240 28.875 733.42 27.250 642.15 12 3/4-10
B C Tapped Holes
in mm in mm No. Size
Table 6 – Flywheels for Industrial Engines with
Industrial Power Take-Offs - SAE J620 Oct 88
Clutch
Size
165
(6-1/2)
190
(7-1/2)
200
(8)
255
(10)
290
(11-1/2)
355
(14)
405
(16)
460
(18)
530
(21)
610
(24)
B C Tapped Holes
in mm in mm No. Size
8.500 215.90 7.875 200.02 6 5/16-18
9.500 241.30 8.750 222.25 8 5/16-18
10.375 263.52 9.625 244.48 6 3/8-16
12.375 314.32 11.625 295.28 8 3/8-16
13.875 352.42 13.125 333.38 8 3/8-16
18.375 466.72 17.250 438.15 8 1/2-13
20.375 517.52 19.250 488.95 8 1/2-13
22.500 571.50 21.375 542.92 6 5/8-11
26.500 673.10 25.250 641.35 12 5/8-11
28.875 733.42 27.250 692.15 12 3/4-10
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Typical Installations
Page 118 of 124
Figure 10 – Engine Flywheel to Keyed
Shaft - Direct
Figure 12 – Flywheel to Flanged Shaft - Direct
(LCD -01 Series)
Figure 11 – Flywheel to Flanged Shaft - Direct
(LCD -25 Series)
Figure 13 – Flywheel to Internally Splined Shaft
- Free Floating Splined Connection
Figure 14 – Flywheel to Adapter to Coupling and
Through an Internally Splined Connection
Figure 15 – Stationary Engine to Load by Use
of a Pillow Block on a Common Frame - Permits
Large Drive Angles
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 119 of 124
Figure 16 – Vehicle Engine with Large Angle
Drive Requirements
Figure 18 – Stationary Equipment Having a
Tapered Shaft Connection
Figure 17 – Flywheel to Flanged Hub to Splined
Shaft - Free Floating Splined Connection
Figure 19 – Shaft to Shaft Arrangement Using
Split Taper Bushings at Both Sides
Figure 20 – Two Dynafl ex LCD Couplings in
Series for Increased Flexibility in All Directions
Figure 21 – Stationary Equipment Having Input
Shaft Attached to Coupling Inner Member
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 120 of 124
Dynafl ex LCD Series Couplings
Torsional System Analysis Input
Requirements
Dynafl ex couplings offer unique advantages with the
soft torsional spring rate that isolates torsional vibration,
mitigates shock and reduces noise transmission. In order
to benefi t from these advantages, an analysis must be
made of the application and a coupling selected which
meets the specifi c requirements. The following checklist
sets forth the information required to initiate the analysis:
Application Data
• What is the driving unit, driven unit? Include enough
information to determine disturbing frequencies
(e.g., type of engine, number of cylinders, number of
cycles).
• What is the operating torque (normal, maximum)?
• What is the operating speed (range, at normal torque
and at maximum torque)?
• What are the environmental conditions (temperature,
oil type and amount of exposure, corrosive factors,
other factors)?
Remote Driven Units
Multiple U-joint shafts (especially longer shafts) and
the speed at which the shaft rotates (especially higher
rpm’s) can create complex stability problems. To assure
satisfactory coupling performance, all design layouts
for remote mounted driven units should be reviewed
by LORD Engineering. LORD analytical capability is
only one part of the engineering service available on all
coupling applications.
What Else?
If your application is unique or unusual, include any
information that you believe will have an effect on the
coupling design or selection. If you have any questions
as you prepare this data, call us. See following page for
data form.
Reference Literature from Lord Corporation
Design Monograph 1107
Understanding Torsional Vibration
Coupling Requirements
• What are the primary functions of the coupling
(torsional vibration isolation, torsional shock
mitigation, noise attenuation, shaft misalignment
accommodation – angular, parallel, axial)?
• If known, what torsional spring rate should the
coupling have?
• If the required torsional spring rate is not known, what
are the rotational moments on inertia of the driving
and driven masses?
• How much misalignment must the coupling
accommodate (angular, parallel, axial)?
• How much, if any, axial thrust will be on the coupling?
Design Parameters
• What space is available for the coupling (maximum
length, diameter)?
• What is the maximum weight the coupling can be, if
weight is limited?
• What are the shaft diameters and method of
attachment (keyway, spline, set screws, fl ange)?
• What special features are required? (Inner member
design – hubs, fl anges, splines, etc. Outer member
design – pilot diameter bolt pattern, etc.)
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 121 of 124
Data Required for LORD Coupling Recommendation
Toll Free Number (in United States and Canada): +1 877 ASK LORD (275 5673)
All Information in This Box is Required Data.
Date _____________________________________________ LORD Recommended P/N __________________________
Company Name ___________________________________ Field Engineer ____________________________________
Address __________________________________________ Discussed With ___________________________________
__________________________________________________ Title ______________________________________________
General description of problem and equipment ____________________________________________________________
Retrofi t New System
APPLICATION
Driving Unit
* Description __________________________________________________________________________________________
* Model No. _______________________________________ * Manufacturer ____________________________________
* 2-Stroke/Cycle 4-Stroke/Cycle
* Rotational Inertia and Torsional Spring Rate Data (attach tabulated data)
* Radial Support Needed: Yes No
Driven Unit
* Description __________________________________________________________________________________________
* Model No. _______________________________________ * Manufacturer ____________________________________
* Rotational Inertia and Torsional Spring Rate Data (attach tabulated data)
* Parasitic Torque required __________lb-ft
SYSTEM DYNAMICS
* Mass elastic schematic of entire system (please attach sketch)
Test data (attach if available)
Speeds of Driving Unit: Idle ________ RPM Normal _________ RPM Maximum ________ RPM
% Time: @ Idle ____________ @ Normal ____________ @ Maximum _____________
Speed Ratio Driving to Driven Unit: __________________________ to ______________________________
* Torque: Normal ___________ lb-ft Maximum _________ lb-ft (@ ___________ RPM)
Present Vibration: Peak-to-Peak Response Maximum __________lb-ft @ ____________CPM
* Transient Shock: Magnitude: __________________lb-ft
Duration: ____________________milliseconds
How Often: __________________times per hour
* Briefl y describe any peculiarities or special circumstances of the dyanmic system ____________________________
* Required data (OVER)
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
DYNAFLEX ELASTOMERIC FLEXIBLE COUPLINGS
Page 122 of 124
COUPLING REQUIREMENTS
Primary Function
Shaft Misalignment Specifi c Requirements
__________________Axial _______________ Inches
__________________Angular _______________ Degrees
__________________Parallel _______________ Inches
__________________ Torsional Vibration Isolation _______________% Isolation @ _________ RPM
__________________ Torsional Shock Loads _______________Maximum Amplitude
__________________Noise Attenuation
Parameters
* System Operating Temperature: Normal _______ °F Maximum _______ °F Minimum _______ °F
* Environment: Oil Immersion _______________________ Oil Splash ________________________________________
Other ______________________________ Mil Spec _________________________________________
* Space Envelope: Maximum Length ________________ Maximum Diameter ________________________________
* Attachments: Driving Spline Flange Driven Spline Flange
Keyways Set Screws Keyways Set Screws
* Shaft Diameters: Driving _____________ Driven ___________________
Fail-Safe Feature Required: Yes No
Maximum Allowable Weight: ___________________________
* Minimum Hours Life Required: _______________________
Please attach the following:
1. A layout of the available space envelope and other pertinent drawings showing connecting driveline components.
2. A system mass-elastic diagram including all rotational mass moments of inertia and torsional
stiffnesses.
Remarks ______________________________________________________________________________________________
* Required data
Please return to: LORD Corporation
2000 West Grandview Blvd.
P.O. Box 10038
Erie, PA 16514-0038
Fax: 814 866 1773
A part’s listing in this catalog does not guarantee its availability.
To download/print the most current catalog, go to www.lordfulfi llment.com/upload/PC7000.pdf. Rev.1 10/08
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