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  • Grade 100 Oversized Master Link Assembly OMA Type
  • Grade 100 Oversized Master Link Assembly OMA Type
  • Grade 100 Oversized Master Link Assembly OMA Type
  • Grade 100 Oversized Master Link Assembly OMA Type

Grade 100 Oversized Master Link Assembly OMA Type

No.505035

This Grade 100 Oversized Master Link Assembly (OMA Type) is engineered with extra-large dimensions to easily accommodate oversized crane hooks, making it an ideal choice for complex 3-leg and 4-leg chain or wire rope sling configurations.

  • High-Strength Grade 100 Alloy Steel: Quenched and tempered alloy steel delivers up to 25% higher working load limits than standard Grade 80 components.
  • Oversized Inner Dimensions: Extra-wide design allows seamless connection to large crane hooks and heavy-duty rigging attachments without crowding.
  • Sub-Link Assembly Design: Consists of a main master link and two sub-links to streamline 3-leg and 4-leg sling setups, ensuring optimal load distribution.
  • Proof Tested & Certified: 100% proof load tested with a 4:1 safety factor, fully compliant with EN 1677 and ASTM standards for overhead lifting safety.
  • High-Visibility Powder Coating: Finished in durable, bright protective coating for high visibility on job sites and superior corrosion resistance.

Technical Data

Grade 100 Oversized Master Link Assembly - OMA Type

Engineered Clearance for Large Crane Hooks & Multi-Leg Slings
Grade 100 Alloy Steel Oversized Top Ring For 2, 3 & 4-Leg Slings EN 1677-4
Grade 100 Oversized Master Link Assembly, OMA Type Dimensional Drawing

In heavy mobile crane operations, offshore rigging, shipyard modular lifts, and high-tonnage industrial material handling, standard master link assemblies often fail to fit over large DIN or rams-horn crane hooks. Forcing a tight master link onto an oversized crane hook saddle causes severe pinching, side-loading, and dangerous stress concentrations.

The H-Lift Grade 100 Oversized Master Link Assembly (OMA Type) solves this physical fitting bottleneck by pairing an extra-large primary master link with two engineered sub-links (intermediate links), providing ample inner bowl clearance for large crane hooks while ensuring 2-leg, 3-leg and 4-leg chain slings track naturally along balanced load planes.

Product Features

  • Oversized Crane Hook Compatibility: Extra-large rings make this master link assembly the perfect partner for crane hooks according to DIN 15401 up to no. 25 and according to DIN 15402 up to no. 32.
  • 2, 3 & 4-Leg Applications: Designed for the effortless creation of 2-leg, 3-leg and 4-leg chain slings in assembled or welded systems.
  • Engineered Flats: The flattened section on the transition links opens up additional, universal connection possibilities, making hardware attachment easier.
  • Grade 100 Strength: Every OMA-type assembly is drop-forged from premium nickel-chromium-molybdenum-boron super-alloy steel. This delivers a 25% increase in Working Load Limit (WLL) over Grade 80 hardware of the same material diameter.
  • High Durability: Quenched and tempered in automated thermal channels, OMA assemblies deliver exceptional fatigue resistance and deep wear durability.
  • Standards Compliance: Features CE-marking and is manufactured according to EN 1677-4.

Technical Specifications

Item No. WLL
(ton)
Main Dimensions (mm) Weight
(kg)
Product Code
A B D a b d
10-OMA-0806 3.55 340 180 23 75 35 14 3.57 5050350806
10-OMA-1008 5.6 340 180 27 80 40 16 5.1 5050351008
10-OMA-1310 9.5 340 180 33 100 45 20 8 5050351310
10-OMA-1613 14 340 180 40 115 50 25 12.8 5050351613
10-OMA-1916 21.2 340 180 45 140 70 28 15.9 5050351916

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