Operation; Removal; Disassembly -- Removal Of Piston; Disassembly -- Safety Valve - Rohm LHS-L Serie Instrucciones De Servicio

4. Operation

D
The operating pressure is limited to max. 8 bar,
min. 1,5 bar
D The unclamping pressure must amount to at least
half the clamping pressure.
D The maximum speed of the actuating cylinder is
engraved in the cylinder housing. This limit must
never be exceeded.
D The cylinder may be actuated during rotation.
D The compressed air used must be filtered (0.01 mm
absolute) and free of water. It must also be oiled
(adding a drop of spindle oil, such as Tellus C 10,
about every 10-12 minutes).
The hose between oiler and distributor housing
should not be more than 1 m long, see also

5. Removal

To remove the cylinder, reverse the installation prece-
dure.
5.1 Shut off air pressure in all lines and completely re-
lieve all lines of pressure.
5.2 Disconnect the chuck or other clamping device from
the draw-in element. The chuck normally need not
be removed.
5.3 Remove connecting and drain lines as well as the
anti-rotation lock.
5.4 Seal the connecting unions with caps.
5.5 Loosen cylinder flange fastening screws and pull
6. Disassembly - - removal of piston
6.1 Remove front flange (item 03)
A. Sizes 26 and 38:
6.2 a) Remove cover (22) at coolant collector (21)
b) Unscrew switching disc (item 27) at rear end
of piston (locked by means of a setscrew)
7. Disassembly - - safety valve
7.1 Remove piston as described above.
7.2 Disconnect piston housing (item 01) from distributor
flange (item 06) by loosening the socket head cap
screws (item 62).

8. Assembly

8.1 Make sure that all parts which are provided with
seals or come into contact with seals are oiled be-
fore they are installed.
8.2 If removed, introduce safety valve into the face-end
bore in the correct position. Check for correct and
complete installation!
8.3 Using the socket head cap screws (item 62), con-
nect piston housing (item 01) to distributor flange
(item 06). Tighten screws to the torque recommen-
ded in the table of torques. Should the class and/or
size of the screws used not be given in the table of
torques, use the torque recommended in VDI
Guideline 2230. (See page 9).
4
Section 1, "Safety instructions and guidelines for
the use of power-operated clamping devices".
D Details of the clamping travel monitoring device
other than the switching disc must be provided by
the customer if required.
D
Maximum speed and maximum pressure may be
applied simultaneously and for an indefinite period
of time (continous duty)
D
The cylinder control system depends on the requi-
red functions of the clamping device and the control
system of the machine and must therefore be desi-
gned by the customer in accordance with the appli-
cable safety requirements (see Section 1, "Safety
instructions and guidelines for the use of power-
operated clamping devices").
actuating cylinder, together with draw-in element if
applicable, partially out of the spindle bore.
5.6 Disconnect draw-in element. If the space available
behind the machine is sufficient to accommodate
the cylinder complete with draw-in element, the
complete assembly (cylinder + draw-in element)
may be pulled out of the spindle bore. In that case,
special care must be taken to keep the complete
assembly horizontally suspended (by finding the
centre of gravity).
5.7 Remove the complete cylinder and place it on a
suitable, protective support. Remove draw-in ele-
ment from spindle bore.
B. Sizes and 62:
6.2 Loosen the socket head cap screws fastening the
switching disc and place switching disc (item 27)
6.3 Pull piston out from the front
6.4 Clean, check and, if necessary, replace all parts.
See "Maintenance".
7.3 Using a fitting screw, pull out the complete valve
unit.
8.4 Carefully introduce piston into piston housing, ma-
king sure that the ends are in the correct position.
Do not damage the seals. Damaged seals must be
replaced immediately.
8.5 Sizes 26 and 38: Screw on switching disc and lock
it with the setscrew provided for that purpose.
Sizes 42 and 62: Using the 3 socket head cap
screws, connect the switching disc to the driving
pins. Tighten screws to the torque recommended in
the table of torques. See table of torques (page 9)!
8.6 Fit and firmly tighten cover on coolant collector
(not required for sizes 42 and 62).
8.7 Fit front flange, tightening the screws to the torque
recommended in the table of torques on page 9.