Parker HLR070, Mounting Instructions

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Parker EME Toothed belt
192-510201N1 HLR 2019-04
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5.5 Toothed belt
In this chapter you can read about:
Checking and setting toothed belt tension........................................................................ 45
Exchanging the toothed belt ............................................................................................ 47
5.5.1. Checking and setting toothed belt tension
An uncorrect toothed belt tension may cause the belt to jump. This may cause a
loss of position. This may lead to collisions or may cause property damage and
personal injuries. Belt pre-tension must always be observed.
Toothed belt pre-tension is matched to the technical axis data and considers
possible belt tension losses after installation. When operating under normal
conditions and in compliance with technical specification, re-tensioning of the
toothed belt is not necessary.
Is a belt tension loss suspected, the toothed belt tensions must be verified and if
necessary corrected as follows:
Assembling sequence
Figure 14: Check and adjust toothed belt tension
After dismantelling the carriage lid, the frontal stop surface of the carriage is
sharp-edged. If handled carelessly during maintenance, you might cut yourself.
Protection gloves must be worn!

Dismantle and put aside steel strip cover, steel strip deflectors and steel strip
sliding rods (see page 43).

If possible, carefully drive carriage to end stop of pulley housing.

Check belt on both carriage sides for abnormal wear (belt back and tooth flanks).
In case of heavy wear, we recommend replacing the toothed belt (see page 47).

Measure the free belt length (Figure 14, L01) between the middle level of the
pulley (Figure 14, Pos. 1) and the belt tensioning element (Figure 14, Pos 3).

Enter the measure belt length (Figure 14, L01) as well as the belt weight (Table
14) in the belt tension gauge.
We recommend to use the gauges “Sonic 507c” of the company Gates resp. the
"Trummeter" gauge of the company Hilger&Kern. For precise measurement, the
operating manual of the measurement equipment must be observed.