Technical Specification

Lifting Ring 92010760

1. General Description

2. Applicable Equipment

• Model: Robbins 73R, 73RH C, 73RVF Raise Borer
• Brand: Robbins (Epiroc Group)

3. Technical Parameters

• Rated Working Load (WLL): 12,000 kg (12 tonnes)
• Safety Factor: 5:1 (minimum)
• Material: High-strength alloy steel (4140 / 42CrMo), forged & heat-treated
• Thread Size: M42 × 4 (metric coarse)
• Swivel Range: 360° rotation under load; 180° pivot
• Finish: Black oxide / corrosion-resistant coating
• Certification: 100% magnetic particle inspected (MPI); proof tested to 2.5× WLL
• Temperature Range: -20℃ ~ +150℃

4. Main Function

1. Provides a secure, load-rated lifting point for major assemblies (drive head, main beam, gearbox).
2. Allows 360° swivel and 180° pivot to avoid side-loading and sling fouling during lifting.
3. Ensures compliance with Epiroc / Robbins safety standards for heavy equipment rigging.

5. Remarks

• Original OEM part, fully interchangeable with the original Robbins 73-series lifting ring.
• For heavy-duty mining & construction environments; not for overhead lifting of personnel.
• Recommended torque for installation: 650–700 N·m (dry threads).