Viper Wire Rope Snatch Block with Shackle Head

The Viper VSBS is a shackle-head wire-rope snatch block for industrial and commercial lifting and lowering applications. Choose the specific block by its marked working load limit (WLL), sheave size and compatible wire-rope diameter.

Match the exact VSBS model's working load limit (WLL) and specified wire-rope diameter to your lifting or lowering arrangement. The Viper sheet lists models from 2 to 50 tonnes WLL, but rope sizes differ by model, including between blocks with the same WLL. Check the product code and the WLL marked on the head fitting before selection.

It is specified for industrial and commercial lifting and lowering applications where a competent user has selected a suitable wire-rope rigging arrangement. The user must confirm the chosen VSBS block's WLL, rope diameter and head-fitting connection for the job; the product name alone does not establish suitability.

The VSBS sheet describes the block as suitable for industrial and commercial lifting and lowering applications. Use it only in a planned wire-rope arrangement with a suitable attachment for the shackle head, and confirm the chosen model's WLL and rope diameter before use.

Choose by the WLL and wire-rope diameter required by your rigging plan, not sheave size alone. The VSBS sheet lists a 2 t WLL and 7–9 mm rope for the 3 in VSBS32, and a 4 t WLL and 10–12 mm rope for the 4½ in VSBS44; larger models have their own ratings and rope ranges. The two smaller sizes have bronze bushes, while other listed sizes have roller bearings.

The WLL marked on the VSBS head fitting identifies the load limit of the block supplied, which must suit the planned lift. The manufacturer's sheet says the minimum breaking load is four times the WLL and that 2.1 and Declaration of Conformity documents are available. These do not replace workplace checks, thorough examination where required, or duties under LOLER and PUWER; neither law is a product certification.