Checking The Play Of The Guide System; Checking The Bearing Play; Checking The Play In The Ball Screw Drive And Nut - Parker HMR 08 Series Assembly And Operating Instructions Manual

Modular Electric HMR Linear Drives
9.4

Checking the Play of the Guide System

Horizontal and vertical play can occur after a certain number of operating hours and service time. Checks for play
should only be evaluated and conducted by trained mechanical technicians.
9.5

Checking the Bearing Play

If increased noise development occurs when operating the HMR, check the bearings for wear. The shaft bearings
have lifelong lubrication.
A check should be done every 2000 km or every 12 months.
9.6

Checking the Play in the Ball Screw Drive and Nut

A check should be done every 2000 km or every 12 months.
► Loosen and remove the motor / gearbox / drive unit.
Check the ease of movement of the screw with nut.
► Move the carriage by hand by rotating the drive shaft over the entire stroke in both directions of rotation.
Check the axial play between the screw and the nut
► Fix the ball screw drive in position radially and axially by blocking.
► Move the carriage by hand axially in both directions.
9.7 Check and adjust belt tensioning
Retensioning of the belt within performance is not necessary. With a nominal loading by 75% of the permitted thrust
force a replacement of the belt after 10,000 km is advised.
A check of the right belt tensioning should be done every 2,000 km or every 12 months.
Measurement can be carried out using different methods:
Drive shaft
NOTE
With the ball bearing guide, no play must be discernible
when the carriage is rotated by hand.
NOTE
Movement should be without jerks, smooth and without
any noticeable running noises within the permissible no
load torque (refer to catalog).
NOTE
When the drive shaft or screw is blocked, it should not be
possible to move the carriage by hand.
A
Measurement A for adjusting the belt tension
Carriage
32