Open Gear, Worm Gear, Hand Winch,Thern

Open Gear Worm Gear Hand Winch From Thern


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Machine Cut Worm Gears provide accurate operation and long lasting service.

Enclosed Oil Bath provides continuous lubrication of gears to minimize wear, except on Model 465. On Model 4WM2 oil seals keep oil in and dirt out.

Hex Drive and handle are included. Model 4WM2 can be power driven with a maximum 400 rpm drill-motor.

Automatic Brake Models provide positive load control for lifting. Brake models have a PB or B suffix.
Model 4WM2 features an internal mechanical brake.

Open Gear
Worm Gear Hand Winch


Model 465


Corrosion Resistant durable paint finish protects against corrosion in harsh environments.

Bronze Bearings on most models for smooth operation.

Large Diameter Drums minimize wire rope wear.

Handles Adjust in length to change force required to move the load.

Mounting Options include floor, wall, or ceiling. Add 10% for factory modification for wall or ceiling mount, adapter plate may be required.

Wire Rope Assemblies sold separately.



Open Gear Worm Gear Hand Winch Performance Characteristics

load rating (lb)

drum capacity1

model
number
description 1st
layer
mid
drum
full
drum
wire
rope
diameter
1st
layer
mid
drum
full
drum
gear
ratio
force
to lift
1000 lb
approx.
ship
wt. (lb)
465 open gears
(recommended for pulling only)
750 510 370 1/8
3/16
7
4
58
26
130
58
20:1 21 lb 12
1Actual drum capacities may be 25-30% less, due to non-uniform winding. Tension in the wire rope will also affect drum capacity.


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