Parker LCB Series, Mounting Instructions

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Maintenance
and service Compact Linear Actuator - LCB
20
192-510014 N06 April 2013
3.5 Checking / exchanging / tensioning toothed belt
Causes for abnormal toothed belt wear
A certain sign of wear may have different causes so that it is not always possible, to determine the
exact cause. The following table shows possible causes for typical damages:
Kind of error possible cause Action
Abnormal wear of loaded tooth
flanks of the belt
Faulty belt pre-tension Exchange toothed belt, set pre-tension.
Overload Exchange toothed belt, set pre-tension.
Check, if the load is in the admissible range.
Abnormal wear at the tooth root
surface of the belt
Pre-tension too high Exchange toothed belt, set pre-tension.
Drive torque too high Verify drive dimensioning.
Abnormal wear at the side flank
of the belt
Faulty alignment of toothed belt Exchange toothed belt, set pre-tension.
Twisted edge of the roller /
pulley Please contact us.
Sheared off belt teeth
Pre-tensioning too weak
Overload (by collision) Exchange toothed belt, set pre-tension.
Splits at the belt teeth
Faulty belt pre-tension Exchange toothed belt, set pre-tension.
Overload Exchange toothed belt, set pre-tension.
Check, if the load is in the admissible range.
Aging of the toothed belt
material Exchange toothed belt, set pre-tension.
Breaking of the toothed belt
Faulty belt pre-tension Exchange toothed belt, set pre-tension.
Overload Exchange toothed belt, set pre-tension.
Check, if the load is in the admissible range.
Softening of the toothed belt
material
Operating temperature too high Exchange toothed belt, set pre-tension.
Lower operating temperature.
Contact with solvent Exchange toothed belt, set pre-tension.
Do not clean belt with solvents.
Skipping of teeth, loss of machine
zero
Pre-tension too low
Wrong motor position (below)
with vertical application Set pre-tension correctly.
If possible move drive upwards Alternatively:
Increase pre-tension or reduce load in
lengthwise direction.
3.5.1. Ordering the toothed belt
Type Designation desired length Art. No.
LCB040 Toothed belt
L
1 :
Length of carriage or
L
2 :
Length of profile must be
stated
420-000004
LCB060
Toothed belt
L
1 :
Length of carriage or
L
2 :
Length of profile must be
stated
420-000016
L
1 :
Length of sliding carriage
L
2 :
Length of profile