Description
Suspended loads spin and twist rigging lines, creating dangerous torque inside crane hoists. The C C Sharrow S-13326 SHUR-LOC hook rotates under full working tension to neutralize cable twist. Sized for 1/2-inch wire rope or grade 100 chain, it delivers a 15,000-pound working load limit. It cannot clear rigging master links thicker than its throat gate opening.
Forged alloy steel forms the hook body and latch, delivering high yield strength under shock loads. The integrated thrust bearing uses sealed chrome-steel rolling elements that permit rotation under maximum line tension. Standard hook latches bend open under side thrust. This unit incorporates the SHUR-LOC positive locking latch system that locks shut as tension builds, preventing accidental disengagement when synthetic slings bunch inside the hook bowl.
Swivel Hook Mechanical Hardware Matrix
Heavy rigging crews position precast concrete and structural columns without line spin. Sealed bearings maintain rotation under maximum crane line tension.
- 15,000-pound working load limit provides high strength for heavy industrial crane picks.
- Sealed thrust bearing enables 360-degree rotation under full load without binding or cable twisting.
- Positive-locking SHUR-LOC latch remains locked shut until the operator depresses the release trigger.
- Forged alloy steel construction absorbs dynamic shock loads without permanent hook throat deformation.
- Recessed latch trigger mechanism protects the release lever from snagging on structural steel corners.
- Clevis attachment pin accepts 1/2-inch wire rope thimbles or mechanical grade 100 chain couplers.
- Proof-tested hook bowl geometry seats round synthetic slings and wire rope chokers centered in the hook saddle.
Tensile Load Swivel Bench Testing
Tensile pull testing verifies full 15,000-pound working load retention with zero hook throat expansion beyond 0.015 inches. Bearing swivel rotational torque measures 18 foot-pounds under maximum rated tension on dynamic testing machines. The hook survives 2.5 times working load limit proof testing without latch pin shearing or body deformation. Acoustic noise during load rotation registers under 58 dBA. Surface hardness tests confirm 38 HRC across the hook saddle to resist gouging from high-tensile rigging chain links under heavy crane hoist line pulls.
Rigging Safety Inspection Work Boundaries
Never tip-load this hook or rig slings across the latch mechanism because side deflection snaps the lock pin. Do not purchase this swivel hook for submerged marine salvage without frequent bearing teardowns and regreasing. Severe throat gouges deeper than 10 percent mandate immediate hook retirement.
- Measure hook throat opening dimensions per month using calipers to detect permanent tensile deformation.
- Check bearing rotation by hand before each shift to detect internal grit contamination or flat spots.
- Lubricate the latch pivot spring and trigger mechanism every 30 days with penetrating oil.
Commercial Warranty Rigging Package Contents
C C Sharrow provides a 1-Year commercial warranty covering forged metal defects, bearing seizure, and latch mechanism failure. The heavy protective carton contains 1 1/2-inch SHUR-LOC swivel hook unit, 1 load pin, 1 retaining roll pin, and 1 manufacturer proof test certification sheet.