The H-Lift Grade 80 U.S. Type Master Link Assembly (MLA Type) is a heavy-duty forged alloy steel lifting component designed specifically as the top attachment point for constructing highly secure 3-leg and 4-leg lifting slings.
The Grade 80 Master Link Assembly (MLA) consists of a primary master link with two welded intermediate sub-links. This configuration is mandated for constructing 3-leg and 4-leg chain slings to ensure proper load distribution and prevent crowding at the crane hook.
| Product Type | Structure | Required Application |
|---|---|---|
| Standard Master Link (Type A) |
1 Single Ring | 1-Leg & 2-Leg Slings Wire Rope or Chain. |
| Master Link Assembly (Type MLA) |
1 Ring + 2 Sub-links | 3-Leg & 4-Leg Slings Ensures even load balancing and prevents bunching. |
Designed to ASTM A952 dimensions. Features a wider profile suitable for the larger crane hooks often found in the North American market.
The sub-links separate the chain legs (2 legs per sub-link), preventing "bunching" at the main lifting point—critical for meeting ASME B30.9 safety standards.
Manufactured from premium Grade 80 Alloy Steel (Quenched and Tempered). Proof Load tested to 2.5x WLL with a 4:1 Design Factor.
| Item No. | Chain Size (inch) | WLL (t) | Main Link Dims (mm) | Sub Link Dims (mm) | Weight (kg) | Product Code | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| A (Len) | B (Wid) | D (Dia) | a (Len) | b (Wid) | d (Dia) | |||||
| 8-MLA-19 | 1/4 - 5/16 | 3.15 | 140 | 70 | 20 | 85 | 40 | 14 | 1.55 | 502047019 |
| 8-MLA-22 | 5/16 | 4.25 | 160 | 95 | 22 | 85 | 40 | 14 | 2.18 | 502047022 |
| 8-MLA-25 | 3/8 | 6.7 | 178 | 89 | 25 | 100 | 60 | 18 | 3.29 | 502047025 |
| 8-MLA-32 | 1/2 | 11.2 | 220 | 110 | 32 | 100 | 60 | 22 | 7.18 | 502047032 |
| 8-MLA-38 | 5/8 | 17 | 267 | 135 | 38 | 180 | 100 | 30 | 12.91 | 502047038 |
| 8-MLA-44 | 3/4 | 23.6 | 305 | 152 | 45 | 180 | 100 | 32 | 21.25 | 502047044 |
| 8-MLA-51 | 7/8 | 31.5 | 356 | 178 | 50 | 180 | 100 | 38 | 30.34 | 502047051 |
| 8-MLA-64 | 1 | 45 | 406 | 203 | 64 | 355 | 178 | 50 | 64.40 | 502047064 |
| 8-MLA-70 | 1-1/4 | 67 | 406 | 241 | 70 | 406 | 203 | 60 | 94.10 | 502047070 |
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 |
