Product Description
A General Idea Indicating The Safe Working Loads Of Our Blocks, Dia of Sheave Circf. of Rope, 6, 1-1 1/4, 7, 11/4-1 1/2, 8, 11/2-1 1/4 10, 1 1/4 2 1/4 12, 2 1/4-2 1/2, 14, 2 1/2-3, 16, 3-3 1/2, 18, 3 1/2-4, S.W. L. tons, Single, Sheave, 0.75, 1.5, 2, 3, 5, 6, 7, 10, Double, Sheave, 1, 2, 3, 5, 8, 10, 15, 20, Triple, Sheave, 1.5, 2.5, 5, 10, 12, 15, 20, 25, Safe Working Loads (S.W. L.) Of Rigs B. S.: 4018-1966, Dia of Sheave, Dia of Rope, S.W. L., per Single, part of rope, Ton, Safe Working Loads of Rigs, inch mm inch mm 1/1 Rig Ton 2/1 Rig Ton 2/2 Rig Ton 3/2 Rig Ton 3/3 Rig Ton, 5, 127, 3/8, 9, 0.75, 1.5, 2.25, 3.0, 3.75, 4.5, 6, 152, 7/16, 11, 1.0, 2.0, 3.0, 4.0, 5.0, 6, 7, 177, 1/2, 13, 1.25, 2.5, 3.75, 5.0, 6.25, 7.5, 8, 203, 9/16, 14, 1.50, 3.0, 4.50, 6.0, 7.40, 9.0, 9, 228, 5/8, 16, 2.0, 4.0, 6.0, 8.0, 10.0, 12.0, 11, 279, 3/4, 19, 3.0, 6.0, 9.0, 12.0, 15.0, 18.0, 12, 304, 7/8, 22, 4.0, 8.0, 12.0, 16.0, 20.0, 24.0, Selection Criteria: Sheave Dia/Rope Dia = At least 12, The safe working load per single part of rope is approximately one sixth of the nominal breaking load of ropes as 2 2 specified in B.S.302 621 in the 6 x 37 group of tensile strength 100/110, ton / inch (160/175 kgf/mm ). This is the nominal breaking load on which the design of blocks to this standard is based., The manner of test laid down in schedule II of DOCK Workers (Safety, Health, and Welfare)Regulations, 1990, is as follows:, Article of Gear, Proof Load, Single sheave pulley block, Four times the safe working load, Multiple sheave block with safe working load up to and including 20 tons, Twice the safe working load, Multiple sheave block with safe working load over 20 tons up to and including 40 tons, 20 tons in excess of the safe working load, Multiple sheave block with safe working load over 40 tons, One and a half times the safe working load, Note, Higher capacity pulley blocks manufactured against order., Crane Block, Snatch Block
