R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 10 Stepless - Manual (Page 52)

LM10 STEPLESS I&M MANUAL/EN/11.30.2010
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Copyright © (2010) R&M Materials Handling, Inc. All rights reserved.
Figure 16. Chain Dimensions
11 t
t
t
P25004
Ød
Measure the following chain dimensions at several points on chain: (Figure 16)
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 (d): 0.240” [6.1 mm] MINIMUM
Maximum pitch allowed (t): 0.736” [18.7 mm] MAXIMUM
Maximum length allowed (11t): 7.862 ” [199.7 mm] MAXIMUM
NOTICE:
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.