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Winch

Modern self-tailing winch on a sailing boat. Here, the line winched is a jib or spinnaker sheet which runs from the sail (upper left, not shown) to a block (lower right,not shown) and from there to the lower part of the winch. The handle is detachable to facilitate handling of the line.

A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the "tension" of a rope or wire rope (also called "cable" or "wire cable"). In its simplest form it consists of a spool and attached hand crank. In larger forms, winches stand at the heart of machines as diverse as tow trucks, steam shovels and elevators. The spool can also be called the winch drum. More elaborate designs have gear assemblies and can be powered by electric, hydraulic, pneumatic or internal combustion drives. Some may include a solenoid brake and/or a mechanical brake or ratchet and pawl device that prevents it from unwinding unless the pawl is retracted

POWER WINCH

Weighs only 22.8kg and pulls 15,000 kg.

So light you can hand carry it to the job! Fast mounting ­ platforms, davits, trolleys, cranes. Eeasily put pulling power wherever you need it.

  • Pulls over 15,000 kg loads up 5% inclines
  • Lifts 1,200 kg directly
  • Up to 512 ft cable on anti-stacking drum
  • Self-locking, double-reduction worm gear drive
  • Patented trigger Duo-DynamicTM electrical braking system
  • Precise start/stop remote controls
  • Ball and roller bearings in sealed oil bath
  • 8 models, 115 or 230 VAC

WORM GEAR POWER WINCHES

Up to 2000 kg capacity

Model 4WP2

  • Machine Cut Worm Gears provide accurate operation and long lasting service.
  • Enclosed Oil Bath provides continuous lubrication of gears to minimize wear. Oil seals keep oil in and dirt out
  • 115 Volt Single Phase Electric Motor includes power cord with grounded plug and a momentary contact-type push button pendant control on acontrol cord.
  • Internal Mechanical Brake provides positive load control for lifting and lowering operations.
  • Ball Bearings and self-aligning bronze bearings provide smooth and efficient operation.
  • Pressure Plate on series 4WP2T8 only, applies pressure to drum and wire rope to help maintain uniform winding
  • Dual Function Cable Anchor for quick disconnect of wire rope with swagged ball fitting, or recessed cable anchor with set screw for wire rope with unfinished end.

Model 4WP2T

  • Mounting Options include floor, wall, or ceiling.
  • Wire Rope Assemblies sold separately.
  • Cast Aluminum construction, for lightweight strength
  • Corrosion Resistant durable paint finish protects against corrosion in harsh environments
  • Large Diameter Drums minimize wear to the wire rope and help extend its life.
  • Clutch Model allows operator to manually disengage the drum to rapidly unwind wire rope. Clutch models do not included pressure plates.

THE UTILITY HYDRAULIC CAPSTAN WINCH-HOIST

APPLICATIONS

  • All purpose lifting and pulling
  • Hoisting distribution line transformers
  • Communication tower maintenance
  • Move rolling loads up to 7,500 kg

FEATURES

  • Worm gear reduction for positive load holding
  • Rugged construction
  • Needs only 2 GPM @ 900 PSI
  • Control valve available
  • Full power reversible

Types of winches

Snubbing winch

This is a vertical spool with a ratchet mechanism similar to a conventional winch, but with no crank handle or other form of drive. The line is wrapped around the spool and can be tightened and reeled in by pulling the tail line, the winch takes the load once the pull is stopped with little operator tension needed to hold it. They also allow controlled release of the tension by the operator using the friction of the line around the ratcheted spool. They are used on small sailing boats and dinghies to control sheets and other lines, and in larger applications to supplement and relieve tension on the primary winch mechanisms.

Wakeskate winch

Wakeskate winching, which is the popular term today, is a growing hobby for many watersports enthusiasts. It consists of an engine, spool, rope, handle, frame, and some sort of simple transmission. The person being towed walks (or swims) away from the winch and pulls out all of the rope. When the winch is engaged, it pulls the boarder usually between 15 to 25 miles per hour (24 to 40 km/h). Winches are popular for people wanting to board on ponds and lakes, or just don't have a boat. Also, the winch can either be mounted on the trailer hitch of a vehicle, set into the ground by stakes, or tied to a tree. These winches have also been modified for use by skiers and snowboarders in cities.

Glider winch

Gliders are often launched using a winch mounted on a heavy vehicle. This method is widely used at European gliding clubs, as a cheaper alternative to aerotowing. The engine is usually a large Petrol, LPG or diesel, though hydraulic fluid engines and electrical motors are also used. The winch pulls in a 1,000 to 1,600-metre (3,000 to 5,500 ft) cable, made of high-tensile steel wire or a synthetic fibre, attached to the glider. The cable is released at a height of about 400 to 700 metres (1,300 to 2,200 ft) after a short, steep climb

Air Winch

An air winch, sometimes known as an air hoist or air tugger, is an air-powered version of a winch. It is commonly used for the lifting and the suspension of materials. In the oil and gas, construction, and maritime industries, air winches are frequently preferred to electric, diesel, and hydraulic winches because of their durability, versatility, and safety