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Thern Series 4WM Worm Gear Hand Winches
Thern Series 4WM Worm Gear Hand Winches

Machine cut worm gearing delivers accurate operation and long lasting service. Hex drive and socket handle included. Winch can also be driven with a maximum 400 rpm drill-motor. Cast aluminum gearbox and drum provide lightweight strength and durability. An enclosed oil bath provides continuous lubrication. An internal mechanical brake provides positive load control for lifting and lowering operations. Bronze and ball bearings deliver smooth operation. Wire rope sold separately.


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WARNINGS & CAUTIONS

WARNINGS & CAUTIONS

CERTEX Cat. Ref. No. Thern Model Load Rating 1st Layer Load Rating Full Drum Wire Rope Diameter Full Drum Capacity Gear Ratio Force To Lift 1000 Lb. Approx. Ship. Wt.
CX11-0639 4WM2 2000 lb. 1200 lb. 1/4 in. 77 ft. 32:1 12 lb. 43 lb.
CX11-0640 ED120BD electric drill-motor 400 rpm drive kit – 120 VAC 1-1/8” hex socket 12 lb.

Actual drum capacities may be 25-30% less, due to nonuniform winding.
Tension in the wire rope will also affect drum capacity

WARNING: Prop 65: Products supplied by CERTEX USA may expose you to chemicals including Nickel, which is known to the State of California to cause cancer. For more information, visit to www.P65Warnings.ca.gov.

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