Joyce CDB3230 - Manual (Page 4)

4
Drive shaft alignment is critical. Mis-alignment will cause reversing stresses in rotating
members and will lead to fatigue failure. Correct coupling specification is important.
6. When fastening the load to a ball screw actuator, make sure the actuator is in the
retracted position. This positions the load accurately with respect to the lifting screw
centerline. Never pull the screw to one side to make connection with your structure.
Fully extend the actuator to make sure the load is aligned with the lifting screw.
7. All ball screw ComDRIVE® actuators are designed to be mounted with S.A.E. Grade 8
bolts or equivalent.
8. Torque all mounting bolts in a symmetric pattern to avoid damage to the sleeve.
9. Shaft and coupling guards are the responsibility of the user.
10. Optional limit switches furnished with the actuator are NOT preset and require field
adjustment before use.
Section II
Maintenance
2-1 Lubrication
Jacks
1. Ball screw ComDRIVE® actuators are lubricated before leaving the factory.
2. For normal operation, jacks should be greased at least once per month. Under
extended use, grease twice monthly or as conditions dictate. Grease thru the fittings
on the jack with hand or power operated equipment. Grease with No. 1 Consistency
Grease. Do not allow jacks to operate without lubrication. It is the responsibility of the
user to maintain sufficient lubrication of the jack and to the lifting screw.
3. The products listed below are recommended by the lubricant manufacturers to meet
the requirements for normal operation. The listing of brand names is solely for the
convenience of users of Joyce equipment and their lubricant suppliers; it does not
constitute any endorsement. Joyce/Dayton assumes no responsibilities for the quality,
performance or availability of any listed products
COMPANY
BRAND NAME
Mobil Grease…………………….XHP 461
Mobil Grease…………………….XHP 221
Mobilith……………….…………..SHC221
Mobilith……………………………SHC 460
4. For operation above 250° F or extreme loading, c onsult the Engineering Department of
Joyce/Dayton Corp.
5. Ball screw and ball nut (on KFTN models) should be lubricated with a spindle or 10-
weight oil applied to the ball screw.
6. Do not operate jack without lubrication.
7. Total grease capacity by jack type:
Jack
Capacity
Number
of Shots
Approximate
Weight
Jack
Capacity
Number
of Shots
Approximate
Weight
2 ton 13 4.5 oz 20 ton 95 33 oz.
5 ton 26 9 oz. 30 ton 135 47 oz.
10 ton 50 17 oz