R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 16-20-25 - Manual (Page 30)

LM16-20-25 I&M MANUAL/EN/11.30.2010
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6.6 Load Chain Specifications (see Figure 12)
Table 3. Load Chain Specifications
Hoist Type: LM 16 LM 20/LM25
Chain Specification: Load chain - 9.0 x 27.0 Load chain - 11.3 x 31.0
Chain type: Standard Standard
Diameter (ød) x pitch (t): 0.3543 x 1.0629 in [9.0 x 27.0
mm] 0.4449 x 1.2205 in [11.3 x 31.0
mm]
Length over 11 links (11t): 11.6929” [297 mm] 13.4251” [341 mm]
Class: DAT DAT
Grade: H8S or HE G80 RAS H8S or HE G80 RAS
Maximum working stress: 123.4 N/mm
2
122.3 N/mm
2
Hardened surface: 580 or 700 HV 580 or 700 HV
Thickness: 0.18 to 0.45 mm 0.21 to 0.52 mm
Standard: DIN 5684 – 8 DIN 5684 - 8
Marking (10 x t): 1 or 16 1 or 16
H 8 S or A 8 H 8 S or A 8
Maximum working load, 1
fall: 3527 lbs. [1600 kg] 3 STONS/6000 lbs. [2722 kg]
Breaking load: 93 Kn 160 kN
Maximum breaking stress: 116,030 lbs/in
2
(800 N/mm
2
) 116,030 lbs/in
2
(800 N/mm
2
)
Total breaking elongation: >10% min. >10% min.
Weight for 100 links: 1.8 kg 2.85 kg
6.7 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.