4WS Worm Spur Series

Over 6,000 lb Capacity

Thern 4WS series power winches feature a combination of helical/worm and spur gearing make these winches ideal for applications requiring secure load control and accurate positioning.

Quick Facts

  • Flange style roller bearings
  • Welded steel drum
  • Extended steel drum shaft
  • Wire rope assemblies
  • Flange mounted motor
  • Load holding motor disc brake
  • Dual-stage gearing
  • AMSE compliance
  • 2-Year Limited Warranty

Series Models

  • 4WS9M18
  • 4WS16M20
  • 4WS26M26

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Thern's WS series 4WS26MC power winch is ideal for secure load control and accurate positioning.

4WS Series — Model 4WS26MC Power Winch with Clutch.

Features

Motor is a 230 or 460 volt, 3 phase motor, 60 cycle, IP 54*, TEFC severe duty, reversible, class B or F insulated, continuous duty brake motor. Standard motors comply with relevant standards including NEMA, MG1, ANSI, CSA, IEC1 and ABS.

Brake is spring set, electrically released for positive load control.

Gearing is comprised of a worm or helical/worm and spur gears, making winches well suited for applications requiring secure load control and accurate positioning. The heat-treated worm or helical/worm gear set provides improved durability and operates in an oil bath, enclosed in a high strength cast iron gear case, SAE class 30. Double-lip oil seals keep oil in and contaminants out. Large capacity bearings ensure long life. Speed reducers meet AGMA standards. Guarded, heat treated spur gearing provides secondary reduction. Grease zerks allow for easy lubrication.

Bearings are self-aligning with cast housing to maintain smooth drum rotation.

Drum has outside flange anchors, which allow for uniform winding and helps to extend life of wire rope. Anchors allow cable to be over wound or under wound from either side of the drum.

Captures both ends in a fabricated steel frame for optimal strength and security.

Sold separately per customer request.

Please contact the factory.

Industry-leading two-year “Move It With Confidence” limited warranty.

Accessories/Options

The Redline Series is used to change the direction of the rope, so the winch can be mounted in a convenient location and the Redline Lead Block will control the path of the rope to avoid obstacles, reduce hazard, and improve rope wear. Vertical Lead Block Series

Available modifications include grooved drums, multiple compartment drums and modified drum widths and diameters.

Available options include base, wall or under hung installation.

Apply pressure to drum and wire rope to help maintain uniform winding.

Provide secondary shut-off for load travel in one or two directions.

Include air or hydraulic, voltage or phase changes, IP 55 or 65, class F or H insulated and multi-speed operation.

Include IEEE 45 marine duty, tropical duty, severe duty and explosion proof ratings.

Include over-speed, caliper style, band, and more. Please contact the factory.

Available in a wide range of standard and custom configurations for single or variable speed.

For operation in harsh or hazardous environments.

For winch operation in power loss situations.

Frequently Paired With

Custom Cranes & Winches

Electric Controls

Wire Rope Assemblies