R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 5 - Manual (Page 31)

LM05 SERIES II I&M MANUAL/EN/11.30.2010
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Copyright © (2010) R&M Materials Handling, Inc. All rights reserved.
Figure 12. Chain Dimensions
11 t
t
t
P25004
Ød
Measure the following chain dimensions at several points on chain: (Figure 12)
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): 0.1693” [4.30 mm] MINIMUM
Maximum pitch allowed (t): 0.5157” [13.10 mm] MAXIMUM
Maximum length allowed (11t): 5.5216” [140.25 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.