R&M Materials Handling MANUAL CHAIN HOISTS - Manual (Page 35)

RL I&M MANUAL/EN/06.17.09
9/18
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that may not be reproduced, disclosed to third parties, altered or otherwise employed in any manner whatsoever without the express written consent of R&M Materials Handling, Inc.
Copyright © (2009) R&M Materials Handling, Inc. All rights reserved.
4 INSPECTIONS
4.1 Load Chain Inspection
Check the condition of the load chain regularly. Never use the equipment if any of its links are cracked or
deformed. Link wear must not exceed 10 % of the specified diameter of the load chain.
Measure the load chain over 5 links + 2 diameters as shown below in the Load Chain Technical Specification
section. Compare the measurement with the appropriate value of the Dimension over 5 links + 2 diameters
for a new load chain.
Replace the unit if the link wear exceeds 10 %.
4.1.1 Load Chain Technical Specification
Table 1. Load Chain Technical Specifications
Capacity ¼ Ton ¾ Ton 1 ½ Ton 3 Ton
250 kg 750 kg 1500 kg 3000 kg
Chain diameter x pitch 4 x 12 6 x 18 7.1 x 21 10x30
Grade 80 80 80 80
Class T T T T
Minimum breaking strain
(N/mm2)
900 900 900 900
Standard DIN 5684 DIN 5684 DIN 5684 DIN 5684
Safe load limit on 1 fall (kg) 250 750 1500 3000
Breaking load (kN) 32.8 49 63.5 147
Min. total elongation over 7 links 10% 10% 10% 10%
Dimension over 5 links + 2
diameters (mm) / (inch) 68 (+0/-0.16)
2.677 (+0/-0.006)
102 (+0/-0.6)
4.016
(+0/0.0236) 119.2 (+0/- 0.8)
4.693 (+0/-
0.0315)
170 (+0.74/-
0.37)
6.693 (+0.0291/-
0.0146)
Weight (kg) per meter
Weight (lb) per foot 0.235
0.16 0.78
0.52 1.09
0.73 2.17
1.46