JET JLH Series Lever Hoist with Overload Protection

Description

Pulling structural weldments into position inside cramped ship compartments requires the JET JLH Overload Lever Hoist. This 1,500 lbs capacity ratchet puller features internal slip clutch overload protection to prevent rigging failures. An enclosed Weston brake holds loads firmly under hammer blows. Riggers must maintain active chain tension to keep the freewheel clutch locked.

High-impact steel gear covers house a double-reduction gear train and dual-pawl Weston style mechanical load brake. The Grade 100 heat-treated alloy chain measures 1/4in diameter with zinc plating to stop outdoor rust. The high-leverage ratchet handle measures 10in long, with base tool dimensions spanning 6in wide by 5in deep. Bare tool weight equals 16 lbs.

Key Features of JET JLH-75-10

Marine fitters and structural ironworkers buy JET JLH-75-10 hoists to align heavy steel plates for continuous seam welding. Direct trade pricing makes equipping entire fitting crews practical for commercial shipyards.

• Working load limit reaches 1,500 lbs to draw thick structural steel plates and frames into weld alignment.
• Slip clutch overload protection disengages drive gearing if tension exceeds rated working limits.
• Grade 100 heat-treated alloy steel load chain delivers high tensile strength and long abrasion life.
• Twin pawl mechanical brake holds suspended tension loads without slippage during heavy hammering.
• Free-chaining mechanism permits fast manual chain feed through the pocket sprocket during initial hookup.
• Cast steel chain guide stops link jamming and chain bunching when pulling at awkward horizontal angles.
• Ergonomic slip-resistant rubber handle grip improves technician grip when coated in metal cutting oils.

Brake Torque Chain Link Elongation

Tensioning a 1,500 lbs test slug requires 44 lbs of handle pull force along the 10in lever radius. Proof load testing to 2,250 lbs shows zero brake slip across the dual Weston pawl mechanism over an 8-hour dwell test. Grade 100 chain link elongation remains below 1.5 percent at maximum working capacity, while hook throat yield resistance exceeds 6,000 lbs force.

Tensioning Arc Rules Rigging Maintenance

The compact 10in handle operates through narrow 20-degree strokes within crowded ship frames and narrow box girders. Directional selector levers click positively into lift, lower, and neutral positions. Do not buy this manual lever hoist for overhead vertical lifting without primary safety backup slings.

• Clean and coat the Grade 100 load chain with clean SAE 30 machine oil every 20 hours of pulling.
• Inspect the forged alloy hook throats for bending or spread beyond 0.040in every 30 days.
• Disassemble and clean metal dust from the Weston brake friction discs every 6 months.

JET Marine Warranty Unboxed Contents

JET covers this lever puller with a 2-Year limited commercial warranty against structural and mechanical defects. Shipping weight sits at 18 lbs in a heavy corrugated box. The package includes the JLH-75-10 lever hoist, 10ft of Grade 100 chain, proof test certificate, and an operations safety manual.