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8. APPLICATION OF HYDRAULIC SCREWS FOR SPECIAL JIGS
Lead screws type 3690-M2, M3, M4 due to achieved high clamping forces can be applied for
special production jigs. Application of screws in the structure of a production jig makes the
clamping process quick, easy and reliable, simultaneously eliminating fatigue of the operator.
For clamping of bigger workpieces in the jig can be used a number of screws. For clamping the
screw does not require additional fastening elements, only a threaded opening of diameter equal
to the screw diameter according to the table 3 and fig. 5.
Fig. 5. Example of application of 3690 screw for a special jig.
Table 3
Type and size
of lead screw
Achieved
operational
force
[daN]
Diameter D [mm]
of connection
opening
Code No.
3690-M2
3500-4000
Tr28 x 5
0642 236 902 204
3690-M3
5500-6000
Tr32 x 6
0642 236 902 408
3690-M4
8000-9500
Tr36 x 6
0642 236 902 500
9. INDUSTRIAL SAFETY CONDITIONS
► Prior to work every operator operating the vice must make himself acquainted in
detail with the manual.
► Having noticed erroneousness operation or damage to the vice stop working
immediately and inform the supervisor about this fact.
► Repairs and overhauls should be carried out by authorised personnel only.
► Do not lengthen and hammer the crank arm.
► Besides of mentioned conditions the operator should obey local industrial safety
regulations in force in given factory.