Load Chain Specifications (See Figure 13); Removing The Load Chain - R&M LM Installation And Maintenance Manual

LM10 I&M MANUAL/EN/11.30.2010
7.5.3

Load Chain Specifications (see Figure 13)

Chain type:
Diameter (d) / 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 braking elongation:
Weight for 100 links:

7.5.4 Removing the Load Chain

1-FALL CHAIN
1. Remove load from hook block assembly.
2. Remove load block assembly from load chain. Some disassembly of 1-fall load block is required.
3. Attach the chain insert tool to the end of bottom block end of the chain.
4. Run hoist in "UP" direction until all of chain is in container. Stop the hoist with the insertion tool
remaining in the hoist ready for the new chain.
5. Remove chain container with all of old chain in chain container.
6. Remove fall stop from old chain and save for use with new chain.
2-FALL CHAIN
1. Remove load from hook block assembly.
2. Run hoist in "UP" direction until hook block assembly is about 1.0 foot [30cm] from hoist body.
3. Unfasten load chain from chain anchor mounted on hoist body.
4. Remove load block assembly from load chain by allowing chain to run through it. Attach the chain
insertion tool to the bottom block end of the chain.
5. Run hoist in "UP" direction until all of the chain is in the container. Stop the hoist with the insertion tool
remaining in the hoist ready for the new chain.
6. Remove chain container with old chain.
7. Remove fall stop from old chain and save for use with new chain.
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Standard Load Chain
0.268" (6.8 mm) /0.701" (17.8 mm)
DAT
H8S or HE G80 RAS
2
19,595 lbs/in (135.1 N/mm
580 or 700 HV (Vickers Hardness)
0.006" (0.14 mm) to 0.011" (0.28 mm)
DIN 5684 - 8
1 or 16
H 8 S or A 8
2200 lbs. (1000 kg)
13,062.05 psf (58.1 kN)
2
116 030 lbs/in (800 N/mm
>10% min.
2.38 lbs. (1.08 kg)
2
)
2
)
30/85