The Worm Gear Hand Winches from Thern Winches & Cranes that are available at LES USA have fewer moving parts and are best known for their superior endurance and high reliability. Within a Worm gear is a gearbox which has two major parts called the worm and the bull gear.

It has been generalized that worm gear winches have a slower line speed and are less efficient than other designs. However, they can be self-braking, meaning that they stop when the driving worm gear stops which is make the process safer. This product is also extremely robust. If you are an industry that requires line speeds that are equal to planetary counterparts, then try the technologically advanced worm gears.

About the Thern Worm Gear Hand Winches:

The Worm Gear Hand winches from Thern Winches & Cranes provide accurate operation and long-lasting service for your industry. The models from Thern Winches & Cranes are enclosed in an oil bath which provides continuous lubrication of gears to minimize wear, except on Model 465 . On Model 4WM2 oil seals keep oil in and dirt out.

Model 4WM2 can be drill-driven with a maximum of 400 rpm drill (Hex Drive and a handle are included). Additionally, the Thern Winches & Cranes Automatic Brake Models provide positive load control for lifting. Brake models have a PB or B suffix. Model 4WM2 features an internal mechanical brake and is the model commonly found on our Davit Cranes .

For suitable wire ropes, please see table below

• Up to 4600 lb (2086 kg) capacity (choose model from drop-down menu)
• Large diameter drums minimize wear on the wire rope
• Cast aluminium construction
• Machine-cut worm gears
• Bronze bearings provide a super-smooth operation
• Enclosed oil bath- provides constant lubrication of gears to minimize wear (except model #465). On models 4WM2 and 2W40 oil seals keep oil in and dirt out
• Internal mechanical brake (models 4WM2 and 2W40-B) provides positive load control for lifting applications
• Corrosion-resistant durable paint finish protects against harsh environments
• Handle adjustment enables the user to modify the force required operate
• Mounting options- floor, wall or ceiling
• Two-Year Limited Warranty

*Color-coding does not have any particular meaning, it has been used to create an easy-on-the-eye experience only.