R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 1 - Manual (Page 24)

LM01 I&M MANUAL/EN/11.30.2010
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Copyright © (2010) R&M MATERIALS HANDLING, INC. All rights reserved.
Measure the following chain dimensions at several points on chain: (Figure 6)
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): 0.1102” [2.8 mm]
Maximum pitch allowed (t): 0.3839” [9.75 mm]
Maximum length allowed (11t): 4.1063” [104.3 mm]
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.