ROPE MASTER
BLOCKS

 

Full Side Blocks
*Design factor is 5:1 with plain shackle and with swivel shackle attachments;
4:1 with swivel hook attachment. Exception: No.82-s has a design factor of 3.5:1 with
swivel hook attachments  

  Safe Working Load      

Block 
Number

Line
Size (")

Sheave
Size (")

Swivel 
Attachments

Plain
Shackle

Throat
Width(")
Opening
Height(")
Swivel
Attachment
Plain
Shackle
6 3/8 - 1/2 6x2 3/4 6,500 lbs ----- 2 1/2 2 1/8 22 lbs -----
8 3/8 -1/2 8x2 3/4 6,500 lbs ----- 2 1/2 2 1/8 26 lbs -----
62-S 3/8 -1/2 6x3 7,500 lbs 8,500 lbs 2 3/4 2 1/2 27 lbs 26 lbs
82-S 3/8 -1/2 8x3 8,500 lbs 9,500 lbs 2 3/4 2 1/2 34 lbs 33 lbs
1102-S

1/2 -5/8

10x3 3/8 ------ 12,000 lbs 3 1/4 3 1/8 ------ 52 lbs
78 3/8 -1/2 8x2  8,500 lbs 10,000 lbs 2 3/8 2 1/2 39 lbs 38 lbs
102

1/2 - 5/8

10x2 1/8 8,500 lbs 10,000 lbs 2 5/8 2 3/4 51 lbs 50 lbs
410-R

5/8 - 3/4

10x1 3/4 10,000 lbs 16,000 lbs 2 1/4 2 3/4 47 lbs 45 lbs
412-R 3/4 - 7/8 12x2 1/2 14,600 lbs 30,000 lbs 2 3/4 2 3/4 93 lbs 85 lbs
812 3/4 - 7/8 12x3 3/4 22,000 lbs 30,000 lbs 4 4 3/4 106 lbs 100 lbs
814 3/4 - 7/8 14x3 1/2 22,000 lbs 30,000 lbs 4 1/4 3 3/4 162 lbs 155 lbs
820 1 - 1 1/4 20x4 1/4 22,000 lbs 40,000 lbs 5 6 315 lbs 305 lbs

Safety Raise Blocks

64 3/8 - 1/2 6x1 1/2 7,500 lbs ----- 7/8 2 1/4 30 lbs -----

                 

Half  Side Blocks 8 Reasons for Specifying Rope Master
Hoisting Blocks Knockdown Blocks
Safety Raise Blocks Rig-Up Blocks
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Blocks

 



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