SAFETY SERVICES

Abu Dhabi, United Arab Emirates

Snatch blocks and wire rope pulleys are common lifting mechanisms used for rigging. Using a snatch block in a block and tackle application reduces the amount of force required to lift an abnormally heavy object. A pulley system is used in conjunction with wire rope or another type of rigging rope, by looping the rope through the pulley (around the sheave) several times before hooking to the object. The force required diminishes proportionately with the amount of pulleys or loops used during the hoist.

We supply a wide range of rigging blocks and pulleys including snatch blocks, derrick hoists, wire rope pulleys, from a range of quality manufacturers.

With so many different variations, sizes and weight limitations, its important to know what to look for when choosing a snatch block for the required application. Factors to keep in mind when choosing a snatch block include:

The Working Load Limit (WLL) of both the snatch block and the wire rope. If the WLL of the snatch block is not compatible with the WLL of the rope, it can create a dangerous situation if either one should fail.

The size of the sheave in the snatch block compared to the diameter of the wire rope. If the wire rope is too large for the sheave, the block can crack. Generally, the wire rope-to-sheave size ratio should be 12:1 in order to hold the wire securely whilst under load.

A snatch block can reduce the direct pull load by half, choose a snatch block that has a rating of double the pull of the winch you will be using.

A winch is a mechanical device that is used to wind up a rope or cable; it generally consists of a winch drum that is attached to a crank. Winches that are used in heavy lifting industries can have sophisticated gear assemblies that are powered by hydraulic, pneumatic or combustible engine drives. Some applications may need a winch that includes a mechanical brake or ratchet to prevent the rope from unwinding.Safety Services Groupstocks and supplies some of the most heavy duty hand winches, air winches, and electrical winches currently available in the market.

Hand Powered Winches: Hand winches are engineered to provide strength and eliminate high maintenance. Quality hand winches are constructed using solid steel gears and industrial strength components.

Electrical Powered Winches: Electrical powered winches are available in either fixed or portable options. These power winches offer machine cut gears, enclosed oil baths and durable cast aluminum construction. They also feature internal mechanical brakes.

Heavy Duty Winches: Heavy duty winches are intended for the most demanding lifting applications. They include enclosed machine cut gearing and worm/spur gears.

Custom Pneumatic winches and hoists: Designed and built to meet your application requirements.

Power choices include AC electric, DC electric or pneumatic motors. A wide variety of options and modifications are available including an extensive range of capacities, drum sizes and gear ratios.