The Grade 80 Load Chain for Manual Hoist is a highly durable, precision-engineered lifting component designed specifically to deliver reliable, safe performance in manual chain hoist systems.
*Strictly calibrated pitch for pocket wheels
| Nominal Size (dia x pitch) |
Standard W.L.L. | Typical Application |
|---|---|---|
| 6 x 18 mm | 1.12 t | 1 Tonne Blocks Common for 1 Tonne Chain Blocks. |
| 8 x 24 mm | 2.0 t | 2 Tonne Blocks Common for 2 Tonne Chain Blocks. |
| 10 x 30 mm | 3.15 t | 3t / 5t Blocks Common for 3t and 5t Chain Blocks. |
| Item No. | Nominal Size (mm) |
Pitch (mm) |
Width (mm) | Length 11x Pitch (mm) |
WLL (t) |
Proof Force (kN) |
Min Break Load (kN) |
Weight (kg/m) |
Product Code | |
|---|---|---|---|---|---|---|---|---|---|---|
| Inside Min | Outside Max | |||||||||
| G8H0412 | 4 | 12 | 4.8 | 13.6 | 132 | 0.5 | 12.6 | 20.1 | 0.35 | 501020412 |
| G8H0515 | 5 | 15 | 6.0 | 17.0 | 165 | 0.8 | 19.6 | 31.4 | 0.55 | 501020515 |
| G8H0618 | 6 | 18 | 7.2 | 20.4 | 198 | 1.1 | 28.3 | 45.2 | 0.78 | 501020618 |
| G8H0721 | 7 | 21 | 8.4 | 23.8 | 231 | 1.5 | 38.5 | 61.6 | 1.06 | 501020721 |
| G8H0824 | 8 | 24 | 9.6 | 27.2 | 264 | 2 | 50.3 | 80.4 | 1.38 | 501020824 |
| G8H0927 | 9 | 27 | 10.8 | 30.6 | 297 | 2.5 | 63.6 | 102 | 1.78 | 501020927 |
| G8H1030 | 10 | 30 | 12.0 | 34.0 | 330 | 3.2 | 78.5 | 126 | 2.2 | 501021030 |
The grade number represents the chain's tensile strength (mean stress value). It is calculated by dividing the tensile force (Newtons) by the cross-sectional area of the two links ($mm^2$).
As the Grade Increases:
| Grade | Material | Primary Applications | Overhead Lift? |
|---|---|---|---|
| Grade 30 (Proof Coil) |
Low Carbon Steel | Light duty, logging, playground equipment, simple barriers. | NO |
| Grade 43 (High Test) |
Carbon Steel | Towing, general utility, load securement. Stronger than G30. | NO |
| Grade 70 (Transport) |
Heat-Treated Carbon | Heavy Duty Securement. Standard for trucking tie-downs. Identified by Gold/Yellow finish. | NO |
| Grade 80 (Alloy) |
Alloy Steel | Standard Lifting Slings. High ductility (stretch) to absorb shock. | YES |
| Grade 100 (Premium) |
Alloy Steel | Heavy Lifting. 25% stronger than G80. Harder surface for abrasion resistance. | YES |
Even with the correct grade, misuse can lead to catastrophic failure. Ensure your riggers are trained to avoid these three common hazards:
A frequent and dangerous mistake is using the load chain inside a hoist to wrap around a load.
Using Grade 70 (Gold) chain for overhead lifting is a common error because the chain looks robust.
Alloy chain is tough, but not invincible. Proper storage and inspection are vital.
