Load Chain Replacement - R&M STAGEMAKER COMPACT SM5 Installation, Operation And Maintenance Instructions

R&M Materials Handling, Inc
Springfield, Ohio USA
: 800 955-9967
web: www.rmhoist.com

Load Chain Replacement

Chain Specification:
Chain type:
Diameter (d) x Pitch (t):
Class:
Grade:
Maximum working stress:
Hardened surface:
Thickness:
Standard:
Marking (10 x t):
Maximum working load, 1 fall:
Breaking load:
Maximum breaking stress:
Total breaking elongation:
Unit Weight: lb/ft [kg/m]
Measuring the load chain for wear
Measuring the load chain for wear should be performed at several points.
Measure the diameter (d) and the pitch (t) of several links.
G
Measure the chain length over 11 links (11 t).
G
Load Chain Wear Limits:
Minimum link thickness allowed (d):
Maximum pitch allowed (t):
Maximum length allowed (11 t):
If any one of these load chain wear limits is exceeded, the load chain must be replaced
immediately. If a single load chain link is defective in any way, the whole chain must be
replaced. In addition, the chain guide and the chain sprocket must be checked for excessive
wear. If necessary, replace the chain guide and the chain sprocket. A worn chain sprocket or
chain guide usually leads to premature chain wear.
08/14/02
STAGEMAKER® COMPACT Concert Hoist
Load chain
Standard
0.189 x 0.492" (4.8 x 12.5 mm)
DAT
H8S or HE G80 RAS
2
19,652 lbs/in (135.5 N/mm
580 or 700 HV (Vickers Hardness)
0.0039" (0.1 mm) to 0.0079" (0.2 mm)
DIN 5684 - 8
1 or 16
H 8 S or A 8
1100 lbs. (500 kg)
6519.50 lb s (29 kN)
f
2
116,030 lbs/in (800 N/mm
>10% min.
0.363 lbs./ft [0.54 kg/m]
Figure 4-4
0.1693" (4.30 mm)
0.5157" (13.10 mm)
5.5216" (140.25 mm)
4-6
SM5 Manual
2
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2
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RM-SM5-MAN-2001-1-ENG
Revision 1