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HMR Series Positioners
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.
With the ball bearing guide, no play must be discernible when the carriage is rotated by hand.
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.
Movement should be without jerks, smooth and without any noticeable running noises within
the permissible no load torque (refer to catalog).
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.
While the drive shaft or screw is blocked, it should not be possible to move the carriage by
hand.
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
NOTE
NOTE
A
Measurement A for adjusting the belt tension
32
Carriage
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