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High precision hoist chain
| Standard | GB/T20947-2009 |
| Safety ratio | 4 times |
| Material | High quality alloy containing Cr, Ni, Mo |
| Application range | Fine tolerance hoist chain Material |
| Grade | 80 |
| Product marking | Mark impint strength grade in links ,such as G80 |
| Surface treatment | Oiled,blackening, hot dip galvanized ,electrogalvanized ,carburization |
Note:
A: The length and width of chains joint no more than 0.5mm
B: The twisted angle no more than 20 degrees on free condiction
C: Hand chain use automatic machine make is clean the welding good
| d | Inner length（P） | Width | WLL（T） | Weight（Kg/m） | Test load (KN) | Min Br. Force(KN) | ||
| Model | Tolerance | Diameter(mm) | Min（a） | Max
(b) |
||||
| 6.3 | +/-0.2 | 19 | 7.2 | 20.4 | 1.2 | 0.85 | 29 | 48 |
| 7.1 | +/-0.3 | 21 | 8.4 | 23.8 | 1.6 | 1.1 | 38.4 | 64 |
| 8 | +/-0.3 | 24 | 9.6 | 27.2 | 2 | 1.38 | 48 | 80 |
| 9 | +/-0.4 | 27 | 10.8 | 30.6 | 2.5 | 1.94 | 60 | 100 |
| 10 | +/-0.4 | 30 | 12 | 34 | 3.2 | 2.2 | 77 | 128 |
| 11.2 | +/-0.4 | 34 | 13.2 | 37.4 | 4 | 2.7 | 96 | 160 |
Scrap standard for chain
1. The allowable wear value of the chain shall not exceed 10% of the diameter of the ring chain bar.
2. Starting from the plane where the main ring is not bent, the main ring shall be scrapped if it is distorted by more than 10°.
3. Crack, bend or twist in any part of the chain and stuck or stiff in the hinge are prohibited when they cannot be ruled out.
4. The permanent elongation of chains and single rings shall not exceed 5% of their original length.
Application
Can use on different pulley or hoist, lever hoist and electrical hoist.
