R&M LM Installation And Maintenance Manual page 29

LM10 I&M MANUAL/EN/11.30.2010
Figure 13. Chain Dimensions
P25004
Measure the following chain dimensions at several points on chain: (Figure 13)
Dimensions of one link ( d x t ) where, d = diameter and t = pitch
Length over 11 links ( 11 t )
Replace load chain if any one of these dimensions exceeds maximum allowed wear.
Maximum allowed wear:
Minimum link diameter allowed
Maximum pitch allowed
Maximum length allowed
NOTE: If load chain needs replaced, then inspect chain guide and chain (load) wheel
on hoist and idler sprocket in 2-fall load block for excessive wear. A chain sprocket
showing evidence of scored pockets or sharp edges generated from wear SHALL be
replaced. A worn chain sprocket or idler sprocket can greatly reduce the life of load
chain.
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t
Ød
(d):
(t):
(11t):
11 t
t
0.240" [6.1 mm]
0.736" [18.7 mm]
7.862" [199.7 mm]
MINIMUM
MAXIMUM
MAXIMUM
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