SMW-AUTOBLOK 1
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Instruction manual
KRS-NZ
2 SMW-AUTOBLOK
Supplement:
Differing from the standard design the outer fixing threads in the
master jaws Id.No. 064727 are
M12
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
SMW-AUTOBLOK 3
1. Operation
The SMW model KRS-NZ centrally clamping shaft-component
chuck allows machining of shaft-type components in a single
operation using a face driver complemented by additional 3-jaw,
radial top jaw clamping. This also allows the transmission of the
high-torque ratings inherent to modern CNC machinery. Firstly,
the workpiece is aligned between two centers and a chucking
surface is machined, with the jaw carrier retracted (max. radial
deviation to centerline 0.03 to 0.04 mm). The jaw carrier is then
extended and the workpiece is clamped by the top jaws on the
pre-machined surface.
The high torque required for rough machining is transmitted by
the top jaws. The top jaws must be profile-turned, or ground, in
the chuck with clamping pressure applied.
For finish machining of shaft-type workpieces the top jaws are
retracted to behind the face driver. The low torque required for
this operation is transmitted by the facedriver.
Each chuck model can be used to cover a wide range of diameters. The replaceable workpiece-specific top jaws and face driver
can be rapidly and easily changed. The shaft-component chucks
are designed to accommodate a wide range of face drivers.
The design of the face drivers and workpiece-specific top jaws is
determined by the field of application and the shape of the workpiece.
Use of face drivers with a fixed center and central piston unit is
preferred as the workpiece axial alignment is effected by the center. The concentrical accuracy of the center is within 0.01 mm.
Actuation of the model KRS-NZ shaft-cornponent chuck and the
face driver central piston unit is by means of a model ZHVD-SZ
dual-piston hydraulic cylinder . This dual-piston cylinder has a central bore for the introduction of various media. The cams required for a travel-sensitive clamping piston II position signal can be
attached to the piston control rod. At the same time the control
rod is prepared for the installation of a "Deublin" media feed.
The first piston actuates the shaft-component chuck. The axial
stroke is divided into jaw carrier movement and the actual jaw
stroke. Only after completion of the jaw carrier movement are
the clamping jaws displaced radially. Due to the inclined jaw guides of the base jaws, the clamping jaws are displaced radially and
axially during the clamping stroke. Consequently, additional axial
force is applied to hold the workpiece against the rigid centre or
a fixed stop on the face driver.
The second piston acts on the central piston unit via the distibutor shaft. All face driver drive pins are thus displaced centrally
towards the workpiece plane surface so that an equal cutting
force is guaranteed at all drive pins.
Employment of face drivers with spring-loaded centers and
hydraulically compensated drive pins can only be recommended
when the axial positioning of the workpiece is not predetermined.
Furthermore it must be taken into consideration that the maximum possible radial run-out accuracy of a spring-loaded centre is
0.02 mm. When such face drivers are employed, the shaft-component chuck actuation is by a rotary closed-center model ZHVSH clamping cylinder with increased piston stroke.
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Jaw carrier retracted
Jaw carrier projected
4 SMW-AUTOBLOK
2. Chuck mounting
To achieve the highest concentricity of the chuck to spindle, the
spindle nose must be checked, with regard to the following
points, as shown in the sketch below.
2.1 Check the radial and axial run-out of the machine spindle
nose, as shown in the sketch below.
2.2 Using an H-type straight-edge check the end surface runout. Special care must be taken to ensure that the bores in the
end surface are free of burrs and clean.
2.3 As a function of the spindle head size, chuck mounting is
by either a mounting flange or an intermediate plate. The
mounting flange and/or intermediate plate are included in the
chuck scope of supply.
When a mounting flange is used it must first be installed on the
machine spindle and checked as described under 2.1 and 2.2 to
ensure a max. radial run-out of 0.01 mm and a max. axial runout of 0.005 mm. Finally the chuck must be mounted to the
flange.
When an intermediate plate is used, the chuck is mounted direct
to the machine spindle.
2.4 To check chuck radial run-out and axial parallelity, a precision-ground test shaft must be clamped between the face driver
and tailstock centers.
2.5 The draw bar and draw tube must be made of high-grade
tensile steel with a minimum tensile strength of 50 N/mm
2
.
Draw bar and draw tube must be perfectly aligned, this is also
applicable to the threads at each end which must be absolutely
concentric, relative to each other. To eliminate the difference
between the spindle bore and the draw tube outer diameter,
guide rings should be fitted, or welded, to the draw bar or the
machine spindle provided with guide bushes. The fitted clearance between guide ring and spindle bore should be approx. 0.2
mm.
2.6 As a matter of principle, any possible remains of swarf
must be carefully removed from the machine spindle before the
chuck is installed. In addition, the outer surfaces of the draw
tube and the draw bar must be greased.
3. Cylinder, chuck and face driver Installation
3.1 Thoroughly clean the cylinder mounting flange and check
for radial and face run-out accuracy (see also item 2, point 3).
3.2 Engage the thrust tube and thrust rod threads in those of
the cylinder piston.
3.3 Attach the cylinder to the cylinder mounting flange and
check radial and face run-out (max. permissible deviation: radial
run-out = 0.01 mm, face run-out = 0.005 mm).
3.4 Secure the flexible hose lines for clamping and release
pressure.
3.5 lnstall the leak-off oil hose and the anti-rotation locking
device.
The leak-off oil and coolant return lines must be
installed vertically. ModeI RT 38-20.25 micron, pressure filters are to be installed in the lines to prevent the entry of
foreign bodies.
The stationary feed housing, anti-rotation locking device must
be installed absolutely stress-free. All connecting lines must be
of a flexible nature to ensure that no external pressure can be
effective at the cylinder housing. Safety guards for rotating components are to be supplied by the machinery manufacturer.
Recommended hydraulic oil:
ISO-HM 32 (2.5-3 °E at 50 °C) or DIN HLP 32
3.6 Attach the chuck mounting flange and check face and
radial run-out as described under Para 2.
3.7 Move both cylinder pistons to their foremost position and
determine the precise length of the thrust tube and thrust bar in
accordance with the enclosed drawing.
3.8 Install the chuck without face driver, top jaws and distributor shaft. For mounting purposes, the chuck piston must be in
its rearmost position. In the case of the model KRS-NZ 190
chucks, connection of the chuck piston to the draw tube is established by turning the complete chuck, whereas in the case of
the chuck sizes starting with the model KRS-NZ 250 a special key
is supplied to facilitate insertion of the draw bush into the draw
tube. Finally, the shaft component chuck is pushed onto the
chuck mounting flange or, in the case of direct installation,
mounted to the machine spindle extension.
3.9 Using the 3 securing screws, secure the shaft-component
chuck to the chuck flange or the machine spindle extension.
3.10 Check chuck radial run-out at the measuring surface "A"
(see page 3) max. permissible run-out = 0.02 mm.
3.11 Thoroughly grease the distributor shaft and insert it into
the chuck piston bore.
3.12 Using the 3 alignment wedges, adjust the face driver radial run-out to max. = 0.005 mm (measuring surface 'B') and
simultaneously tighten the securing screws to remove all clearance. lt is essential to take great care to ensure that the counter diameter of the basic body (Part 1) is not deformed in the
area of the face driver alignment bore.
3.13 Install the top jaws in accordance with the jaw markings.
4. Stroke monitoring
The best possibility for the installation of jaw stroke and clamping piston II position monitors (actuation of the face driver central piston unit) is offered at the rear end of the cylinder spindle. The jaw stroke should be such as to ensure that a residual
stroke is available for subsequent clamping.
The design of the limit switches and method of limit switch signal transmission varies for the individual machinery models and
must, in each case, be specifically matched to the machine controls. The chuck jaw stroke signal and clamping pressure line
monitor signal are utilized to initiate spindle rotation release.
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Measurement of radial and axial run-out at
spindle nose or spindie flange
SMW-AUTOBLOK 5
5. Maintenance and lubrication
5.1 Foreign bodies, such as rust, scale, casting dust and fine
swarf, penetrate almost every chuck, even those with optimized
sealing. Cooling fluids flush out all lubricants. Maintenance of
constant clamping forces, accuracy and long service life can
only be achieved by regular cleaning and lubrication. lf the
clamping force drops considerably in comparison to the table
values, or those contained in the brochure, then the chuck must
be cleaned. To this end it must be removed from the machine
spindle and disassembled.
5.2 The chuck should be lubricated every 20 - 30 operating
hours at the 6 grease nipples on the 3 base jaws and the grease nipples located in the outer periphery of the chuck with
SMW paste K 05 (or, in all cases, with acid-free, saponified grease). During lubrication, operate the chuck jaws several times
over the complete stroke range to ensure sufficient lubricant
distribution.
Power chucks with central lubrication via a Deublin Media feed
should be lubricated as follows:
Use VG 68 slideway oil with a viscosity of 68 Centistokes
(approx. 2° E at 40° C).
Pulse duration: 1 double stroke every 15 minutes.
The lubricating pulse must be effected with the jaw carrier in its
foremost position and must be maintained until the jaw carrier
is retracted. Termination of the lubrication pulse must only
occur with the jaw carrier retracted a sejection of the lube oil
from the metering cartridge is controlled by this action. The
metering cartridge is integrated into the chuck and has a calibrated discharge quantity of 0. 1 cm
3
.
Without regular lubrication, the clarnping force of all
chucks is reduced considerably.
When the chuck can not be easily opened and closed by
application of 1/10 of the permissible actuating force,
then it must be cleaned and lubricated.
6. Chuck disassembly and assembly
6.1 Remove the face driver and top jaws.
6.2 Withdraw the distributor shaft (11) from the thrust rod.
6.3 Remove the chuck from the machinery spindle, or the
mounting flange, in the reverse sequence as described in Paras
3.7 to 3.13.
6.4 Release the grub screw (33) and remove the stop bush (5).
6.5 Remove the 3 grub screws (35).
6.6 Using light blows, displace the basic body (1) to the rear
until it projects out of the jaw carrier (4). Rotate the piston (3)
until it is free of the wedge bar (6) links. Withdraw the piston
to the rear.
6.7 Remove the grub screw (34) and retract the locking pins
(14). Withdraw the base jaws (2) from the jaw carrier.
6.8 Withdraw the wedge bars (6) with locking pins and thrust
springs (48 + 49) to the rear.
6.9 Thoroughly wash all components and check them for
damage. Remove all seals from the individual components,
clean and check them for serviceability. Thoroughly grease all
parts prior to asembly. We recommend the use of SMW paste
K 05 which is distinguished by its excellent adhesive and lubrication characteristics even under high surface pressures and in
wet working conditions.
6.10 Assembly is carried out in the reverse sequence.
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Cover plate for use without facedriver,
e.g. turning of jaws.
6 SMW-AUTOBLOK
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
1 Chuck body
2 Base jaw
3 Piston
4 Jaw carrier
5 Stop bush
6 Wedge bar
7 Mounting bush
9 Locking pin
10 Locking pin
11 Distributor shaft
13 Threaded bush
14 Locking pin
15 Cover
16 Mounting lip
20 Draw bush
21 Lock nut
22 Locking pin
23 Key complete (not shown)
24 Cover
28 Grease nipple
29 Grease nipple
32 Grub screw
33 Grub screw
34 Grub screw
35 Grub screw
36 Dowel pin
37 Socket head screw
38 Socket head screw
40 Socket head screw
41 Socket head screw
42 Dowel pin
43 Plug
44 Plug
45 Spring
46 Rod guide ring
47 Turcon “Glyd” ring
48 Spring
49 Metering cartridge
50 Spring
51 O-ring
52 O-ring
53 O-ring
54 O-ring
55 O-ring
56 O-ring
57 O-ring
Spare parts list - Model KRS-NZ shaft component chuck
Face driver
SMW-AUTOBLOK 7
Determination of tailstock and drive pin forces
The tailstock force required depends on the relationship between clamping and machining diameters, the clamping crosssection, machining direction and the material to be clamped.
To determine the tailstock force required for a planned machining procedure, or other desired data, proceed as follows:
With face driver models SNF and FSB the workpiece axial position is determined either by the alignment mount or by the stop
pins on the face driver. The face driver SNF has a fixed center
for the axial reference in the center bore. The driving pins are
actuated by the small piston of the double piston cylinder . A ball
joint spreads the force equally to all driving pins. This guarantees equal load on all pins. The necessary axial load is shown in
the technical data sheet of the face driver.
With face driver model SNF the workpiece is forced against the
drive pins by the tailstock. The drive pins are interconnected
with each other via an enclosed hydraulic ring system so that
travel compensation guarantees an equal cutting force at all
drive pins. The tailstock force is determined in accordance with
the following description.
In the following basic values table the tailstock force is calculated as a function of the clamping cross-sectional area and the
relationship between workpiece diameter and clamping diameter. The clamping diameters indicated in the tables are referenced to the face driver size and the drive pins. Correct selection
ensures sufficient run-out space for the cutting tool. This can be
modified to match the requirements for a specific operation.
The table values given are calculated for drive pins with symmetric cutting and safety factors of 1.6. When using drive pins
with asymmetric cutters, the clamping cross-section can be
increased by 20% or the tailstock force reduced by 20%.
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Tailstock force - Basic values (daN)
Clamping cross section “A”
Relationship =
workpiece Ø
clamping Ø
pxf(mm2) 1,0 1,25 1,50 1,75 2,0 2,25 2,50 2,75 3,0
0,1 200 200 250 300 350 400 450 500 550
0,2 200 225 275 325 375 425 500 550 625
0,3 200 250 300 350 400 450 550 600 700
0,4 225 275 325 375 425 500 600 675 775
0,5 250 300 350 400 450 550 650 750 850
0,6 275 325 375 425 500 600 700 800 900
0,7 300 350 400 450 550 650 750 850 950
0,8 325 375 425 500 600 700 800 900 1000
0,9 350 400 450 550 650 750 850 950 1050
1,0 375 425 500 600 700 800 900 1000 1100
1,25 400 450 600 700 800 900 1000 1100 1200
1,5 425 500 700 800 900 1000 1100 1200 1300
2,0 450 600 800 900 1000 1100 1200 1350 1500
2,5 500 700 900 1000 1100 1200 1400 1550 1700
3,0 600 800 1000 1100 1200 1400 1600 1750 1900
3,5 700 900 1100 1200 1400 1600 1800 2000 2200
4,0 800 1000 1200 1400 1600 1800 2000 2200 2400
5,0 1000 1200 1400 1600 1800 2100 2300 2550 2800
6,0 1200 1350 1600 1800 2000 2300 2600 2900 3150
7,0 1300 1500 1750 2000 2200 2500 2800 3100 3400
8,0 1400 1650 1900 2200 2400 2700 3000 3300 3600
9,0 1500 1800 2050 2350 2600 2900 3200 3500 3800
10,0 1600 1900 2200 2500 2800 3100 3400 3700 4000
1 daN ≈ 1 kp ≈ 2,2 lbs
p = cutting depth (mm)
F = feed per revolution (mm)
Calculation of “p” et “f”:
Standard relationship
feed =1
cutting depth 10
p = A x 10 (mm)
f=
A
(mm)
p
8 SMW-AUTOBLOK
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Correction in accordance with cutting direction
The basic values quoted in the table are based on a cutting
direction from tailstock to machine spindle. lf the cutting direction is reversed, i.e. cutting force is effective against the tailstock, the table values must be doubled. For recessing operations the table values must be multiplied by a factor of 1.5. lf
several cuts are to be made simultaneously, the values calculated for the individual operations must be added together. lf the
individual operations are to be carried out successively, the highest value calculated for any single cut is to be used.
Determination of drive pins
The total cutting length of face driver pins is calculated by multiplying the cutting length of one pin by the number of pins
installed. The associated cutting lengths are shown on the
enclosed drawing.
To calculate the specific cutting load, divide the calculated tailstock force by the total cutting length of the drive pins. The
result should lie between 25 and 35 daN/mm. lf it is less than
25 daN/mm, drive pins with shorter cutting edges must be
selected. lf it is greater than 35 N/mm, drive pins with longer
cutting edges are required or, if machining operations permit, a
larger face driver must be used. In all cases the largest possible
clamping diameter should be selected in accordance with the
workpiece diameter to be machined.
Regrinding of drive pins
lf the cutting edges of the drive pins are damaged or blunt, they
must be reground. The service life of the cutters generally suffices for approx. 5.000 workpiece changes. The hardened highperformance, high-speed steel guarantees not only a long cutter service life but also trouble-free regrinding. When regrinding
it must be noted, however, that the maximum length reduction
must not exceed 0.2 to 0.3 of the pin diameter, i.e. the length
of a drive pin of 13 mm diameter must not be reduced more
than a maximum of 4 mm. During regrinding it must also be
noted that the hardness of the high-performance, high-speed
steel only remains unimpaired up to a temperature of 500°C.
The optimum setting angle for asymmetric cutters is 65° and
should be maintained. For this reason the drive pins are only
reground on the rear side.
On drive pins with symmetric cutter for series FFB and FSB the
cutter angle is 80°. On these drive pins, both cutting surfaces
must be reground equally.
Correction factors for various materials
The tailstock force required depends, to a great extent, on the
material to be clamped. High-tensile materials increase the spe-
cific cutting force and thus the drive torque required. The calculated tailstock force must, therefore, be adjusted by the
appropriate correction factor. The following table schows the
correction factors asigned to a variety of workpiece materials.
The previously calculated tailstock force must be multiplied by
the appropriate factor.
Brinell hardness, HB 350 290 230 170 110 90
Tensile strength (daN/mm
2
) 120 100 80 60 40 30
Correction factor 1,2 1,2 1,1 1,0 1,0 1,0 0,7
1 daN ≈ 1 kp ≈ 2,2 lbs
Specific daN 35 25 20 15
cutting load mm
Light metal,
bronze,
brass, etc.
SMW-AUTOBLOK 9
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Face driver with fixed point type SNF
1 Main body
2 Clamping head
3 Center
4 Push rod
7 Ball joint
9 O-ring
10 Driving pin
11 O-ring
14 Guide sleeve
16 Grub screw
17 Socket head screw
18 Circlip
19 Stop ring
24 Socket head screw
24 Socket head screw
25 Adjusting wedge
Face driver with spring loaded point type FSB
1 Main body
2 Clamping head
3 Center
4 Spring sleeve
5 Push rod
6 Spring
7 Ball joint
8 Ball joint
9 Driving pin
10 O-ring
11 Locking mechanism
12 Locking mechanism
21 Socket head screw
22 Socket head screw
23 Socket head screw
24 Socket head screw
25 Adjusting wedge
10 SMW-AUTOBLOK
Instruction manual
Shaft chuck type KRS-NZ with retractable jaws
and face driver
Top jaws
The interchangeable top jaws for shaft-component chucks must
be precision-matched to the pre-machined workpiece clamping
area. For improved torque transmission, we recommend that
the jaw clamping face be provided with a serrated surface.
The replaceable jaws can, in the majority of cases, be manufactured from soft top jaws held in stock.
Soft top jaws
Chuck type
AaBbDdHLNT
KRS-160 37,5 25 32 7 17 11 30 78,5 16 10
KRS-200 53 30 32 9,5 20 14 37 102 16 12
KRS-250 64 40 44 12 26 18 37 125 20 20
KRS-315 80 50 44 14 26 18 47 150 20 20
KRS-400 92,5 65 57 16 33 22 47 187 25,5 30
KRS-500 on request
For clamping jaw turning or grinding operations, the face driver must be removed and replaced by the cover plate supplied, see
illustration on page 3.
The outer jaw securing screws must be removed and the appropriate locking pins must be inserted into the head bores of the jaws.
The clamping jaws are subjected to clamping pressure by the pins and the clamping ring for jaw turning or grinding operations.
Detail at “X”
Pin dia. = Bolt head dia.
Clamping ring
Cover plate
min. = 8 mm
Turn or grind down to match
pre-turned workpiece diameter,
max. permisible out-of-round
= 0.02 mm
All dimensions are subject to change without notice current data is available on request
SMW-AUTOBLOK 11
1. Equipment and operating conditions
1.1 The SMW dual-piston hydraulic cylinders are provided with
non-retum valves as a safety measure against sudden pressure
loss due to hose fracture or failure of the hydraulic unit. They thus
meet the safety-technical requirements of the Trades
Associations. The two pistons are controlled individually by the
four-stage oil distributor. The installation of a position sensor is
planned for each piston, whereby signal transmission can be
effected by either a mechanical or a proximity limit switch.
1.2 The maximum speed quoted is permissible for continuous
operation of the cylinder (100 % duty cycle). This data is only
applicable after the warm-up period and not when starting
up with cold oil.
1.3 The maximum permissible operating pressure is 50 bar. At
high speed the hydraulic pressure should not be less than 10 bar.
1.4 Pressure increases can be effected under all operating conditions by means of the pressure regulating valve on the hydraulic unit. lf a pressure decrease in excess of 5 bar is requir ed, it must
be carried out in stages, i.e. after each pressure reduction of 5 to
7 bar, a clamping and release stroke cycle must be carried out.
Piston movement over the complete stroke range must also be
possible with minimum pressure.
1.5 Use ISO-HM 32 (2.5 -3° E at 50° C) or DIN HLP hydraulic oil.
1.6 The rotary feed with anti-friction bearings is maintenancefree.
During operation without a workpiece, it is essential
to ensure that the clamping cylinder is permanently pressurized. lf no pressure is applied, the self-lubricating system
is inoperative and the rotary feed wil seize.
lf clamping energy is switched off over an extended period, the
workpiece may fall out of the chuck. Prior to operation, first operate the clamping cylinder.
1.7 Foreign bodies and dirt particles in the hydraulic system will
damage the rotary feed. lt is, therefore, recommended that a 25
micron pressure filter, model RT 25-20, be installed.
2. Rotary distributor, disassembly and assembly
2.1 Release the grub-screw (42) and remove the trip ring (15).
2.2 Remove the Deublin media feed, if installed, from the shift
shaft.
2.3 Release the socket head screws (22) and remove the limit
switch carrier (10).
2.4 Remove the socket head screws (23) together with the Cu
sealing ring (51) (having been released, the sealing rings (51) must
be replaced). Remove the cover (6) and radial shaft seal (37).
Withdraw the square-section sealing ring (43) and support ring
(44).
2.5 Remove the rotary distributor housing (2) complete with the
two grooved ball bearings (18 + 19) and the radial. seal (37).
2.6 Release the socket head screws (21) and remove the feed
shaft (1).
2.7 Thoroughly wash all components and check them for damage. Remove all seals from the individual components, clean and
check them for serviceability. Thoroughly grease all parts prior to
assembly. Assembly of the rotary distributor is carried out in the
reverse sequence.
3. Cylinder disassembly and assembly
3.1 Remove the dowei pins (28). Release the screws (24) and
remove the washer (8) with the shift shaft (14).
3.2 W ithdraw the plunger II (6).
3.3 Reiease the socket head screws (20) and remove the shift
and guide rings (10 + 11).
3.4 Release the socket head screws (21) and withdraw the ring
(9) together with the square-section sealing ring and support ring
(40 + 41).
3.5 Release the socket head screws (19) and remove the cover
(2).
3.6 Withdraw the plunger I (5). Release the socket head screws
(21) and remove the washer (7), link (13) and dowel pins.
3.7 Remove the plug (31) and withdraw the safety valve (30).
Caution: The two safety valves may only be replaced as
complete units.
3.8 Thoroughly wash all components and check them for damage. Remove all seals from the individual components, clean and
check them for serviceability. Thoroughly grease all parts prior to
assembly. Cylinder assembly is carried out in the reverse sequence.
4. Maintenance
Hydraulic oil ages - compliance with the manufacturer's instructions is, therefore, mandatory. For applications with high temperatures the use of a simple oil heat exchanger is recommended. A
cooling effect can also be achieved by the use of an oil tank with
a capacity 3 to 5 times that of the amount of oil in circulation.
lt is recommended that the function of the safety system be
checked at regular intervals as follows: clamp a shaft-type, nondistortable workpiece in the chuck and switch off the system
pressure - even after a few hours the workpiece must not be
loose. lf pressure is not maintained, check the dynamic seals on
piston and piston rod, renew if necessary. lf the pressure loss is
not due to seal wear, return the cylinder to the manufacturer for
inspection and repair.
Instruction manual
Hydraulic double piston cylinder ZHVD-SZ
Flow: Q = max. 20 l/min
Filter area: A = 300 cm²
Degree of filtration: = 0,025 mm nominal
Max. operating pressure: = 40 bar
Test pressure: = 60 bar
1 Housing with mounting flange
2 Paper filter
3 Magnetic plug
4 O-ring seal
5 Seal support ring
6 Stud
7 Filter screw cover
Pressure filter RT 25-20
12 SMW-AUTOBLOK
Instruction manual
Hydraulic double piston cylinder ZHVD-SZ
Hydraulic system
1 Filter
2 Hydraulic unit
3 Pressure gauge
4 Shutoff valve
5 Non-return valve
6 Pressure monitor
7 Pressure tank
8 Pressure regulating valve
9 Solenoid valve
Model ZHVD-SZ
Cylinder II Cylinder I
Face driver
clamping
pressure
Top jaw
clamping
pressure
Additional consumers
e.g. tailstock
Additional consumers,
e.g. tailstock
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