Wire Rope PullyBlocks

Available Standard: I.S / B.S /ANSI /ASME /DIN or as per Drawing
Size Available: 0.5 Tons to 60 Tons Lifting Capacity
Material: Mild Steel, Steel 304 & 316 , Carbon Steel, Alloy Steel, EN Material, Brass & Copper
Surface Finish: Black Colour, White Plating, Golden Plating & Hot Dip Galvanized
Usage All Industry for Lifting Purpose.
EyeBolt

DIMENSION and TOLERANCE details of RING & LINK ASSEMBLY

ALL Size in Millimeters

Safe Working Loads

Dia of Sheave Circf. of Rope

6”

7”

8”

10”

12”

14”

16”

18”

1”-1¼”

1¼”-1½”

1½”-1¾”

1¾”-2¼”

2¼”-2½”

2½”-3”

3”-3½”

3½”-4”

S.W. L. tons

Single

0.75

1.5

2

3

5

6

7

10

Sheave

Double

1

2

3

5

8

10

15

20

Sheave

Triple

1.5

2.5

5

10

12

15

20

25

Sheave

 

Safe Working Loads (S.W. L.) Of Rigs B. S.: 4018-1966

Dia of Sheave

Dia of Rope

S.W. L.

Safe Working Loads of Rigs

per Single

part of rope

inch

mm

inch

mm

Ton

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

3.75

4.5

6

152

7/16”

11

1

2

3

4

5

6

7

177

½”

13

1.25

2.5

3.75

5

6.25

7.5

8

203

9/16”

14

1.5

3

4.5

6

7.4

9

9

228

5/8”

16

2

4

6

8

10

12

11

279

¾”

19

3

6

9

12

15

18

12

304

7/8”

22

4

8

12

16

20

24

Note:
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.