WELGER RP 202 • RP 220 • RP 302 • RP 320
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12.16. Tensioning the roller chain
Proper chain tensioning reduces wearing of chains, chain
wheels and bearings on rollers. The tension of the chain should
be checked at the latest every 500 bales and re-adjusted as
required.
Note:
New chains will lengthen shortly after placing them into
operation. Therefore these can be tensioned a little more than
usual.
Rotor drive chain
The double chain of the rotor drive must be tensioned so far that
the distance between the two pulleys is about 70 mm (fig. 98).
Roller drive chains
The chains of the roller drives must be tensioned so far that the
spring plates are approximately flush with the measuring angles
(fig. 99 and fig. 100).
fig. 98
fig. 99
fig. 100