Remounting The Chuck; Maintenance - Bison 2500 Instruction Manual

7.2

Remounting the chuck

■ Before remounting, make sure all parts are clean and dry; the lubrication holes are permeable.
!
NOTE: Cleaning the chuck with compressed air is strictly forbidden!
■ To lubricate the master jaw guideways and drawbar, apply the GLEITMO-805 grease or similar; other parts
lubricate with the ŁT-43 grease.
■ Always tighten the mounting bolts with correct torque adequate to a bolt size and its property class.
■ It is recommended to replace the seals if worn or damage with new seals.
■ When remounting the chuck, please proceed in the reverse order from dismounting.
!
NOTE: Insert the jaws into the guideways marked with the same number.
To check the pressure drop in the clamping
chamber, please proceed as follows:
■ unscrew the plug (12) and in its place screw the
pressure gauge,
■ fill the cylinder chamber with air at a pressure
equal 0.5 MPa,
■ turn off the chuck power supply,
■ check, whether there is no air pressure decrease
in the chuck cylinder chamber,
■ perform the chuck leak tightness testing several
times,
■ testing should be carried out for the two
chambers of the pneumatic cylinder.

8. MAINTENANCE

!
NOTE: Never clean the chuck with the compressed air!
■ To lubricate the master jaw guide ways and drawbar, apply the GLEITMO-805 grease or similar, while for the
compressed air supply system apply the HL-32 hydraulic oil or similar.
■ It is recommended to grease the jaws at least once a week.
■ Depending on operating conditions, however at least once a year the chuck should be disassembled. All parts
should be cleaned and the technical condition evaluated, any worn out seals replaced.
■ Each 6 months of chuck operation, the valve needs to be removed from the chuck for cleaning, checking
condition of the sealing, and greasing. If no problems are discovered, insert the valve back in the chuck.
Same maintenance procedure needs to done each time the chuck is not used for more than 3 days straight.
12
To adjust the pressure control distributor in the
chuck pneumatic chamber, please proceed as
follows:
■ unscrew the control device locking screw,
■ while using a screw located inside the device,
adjust the spring tension, so that when the
pressure drops to 0,15 [MPa], the control arbor is
transfered to the extreme position (such as when
there is no pressure in the chamber),
■ screw the control device locking screw,
■ testing should be carried out for the two
chambers of the pneumatic cylinder.