The Grade 80 Shortening Clutch (STC Type) is a heavy-duty rigging component designed to easily adjust the length of chain sling legs. It ensures proper load balance and stability without reducing the overall strength of the lifting assembly.
*Contoured pocket supports chain for 100% WLL
| Type | Link Support | Load Capacity Rule |
|---|---|---|
| Shortening Clutch (STC / This Product) |
Full Support | 100% WLL. Chain sits in a curved pocket. No reduction in lifting capacity required. |
| Standard Grab Hook (EGH Type) |
Partial Support | Reduce by 20%. Chain link bridges the gap, causing stress. Must reduce working load limit. |
| Item No. | Chain Size (mm) |
WLL (t) |
Main Dimensions (mm) | Weight (kg) |
Product Code | ||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | E | L | |||||
| 8-STC-06 | 6 | 1.12 | 7.5 | 30 | 32.8 | 7.5 | 73.5 | 0.18 | 502022006 |
| 8-STC-08 | 7+8 | 2 | 9.5 | 36 | 45 | 9.5 | 101 | 0.45 | 502022008 |
| 8-STC-10 | 10 | 3.15 | 13 | 48 | 55 | 13 | 138 | 0.93 | 502022010 |
| 8-STC-13 | 13 | 5.3 | 16.5 | 59 | 75 | 16.5 | 177 | 1.88 | 502022013 |
| 8-STC-16 | 16 | 8 | 21 | 73 | 93 | 21 | 220 | 3.50 | 502022016 |
| 8-STC-20 | 18+20 | 12.5 | 23.5 | 81 | 102 | 23.5 | 238 | 4.43 | 502022020 |
| 8-STC-22 | 22 | 15 | 25.5 | 98 | 118 | 25.5 | 295 | 8.05 | 502022022 |
Grade 80 Sling Components are the long-established industry standard for chain slings and heavy lifting. Fully compliant with international lifting regulations and designed for durability.
Used to connect the sling to a crane or hoist hook.
End fittings for secure load attachment.
Essential hardware to join chains or fittings.
The core lifting medium and adjustment tools.
| Feature | Grade 80 | Grade 100 |
|---|---|---|
| Strength Level | Standard Industry Standard | +25% Higher |
| Component Size | Larger | Smaller (for same WLL) |
| Weight | Heavier | Lighter |
| Cost | More Cost-Effective | Higher |
