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  7. Yoke 502 Series Snatch Block with Hook - Range from 2000kg to 8000kg
Yoke 502 Series Snatch Block with Hook - Range from 2000kg to 8000kg

Yoke 502 Series Snatch Block with Hook - Range from 2000kg to 8000kg

Light pulley block with captivated hook and built in RFID chip. To suit wire line sizes between 8 and 19mm.

Model: 

8-502-xx / SBWH-2837

Yoke 502 Series Snatch Block with Hook - Range from 2000kg to 8000kg

Yoke 8-502 Light Snatch Block

Features

  • Manufactured with the highest quality tensile steel.
  • Available from 2 tonnes to 8 tonnes, for wire rope sizes 8mm to 19mm.
  • Part number, wire rope size and working load limit are marked on each block.
  • Permanent batch codes link to test certificates for easy traceability.
  • Supplied with bronze bushings and 3.0”-14” with pressure lube fittings.
  • Meets or exceeds all requirements of ASME B30.26.
  • Safety factor 4:1.
  • Fatigue rated.
  • Supplied with a Certificate of Conformity
  • Factory fitted with an RFID chip for serial and certificate traceability.
  • Sheave groove bottom is hardened to 35 Rc to maximise durability.
  • Closed die forged steel sheave

Specifications

Item No. Sheave Dia. (inch) Bearing Type Wire Rope Size (mm) Working Load Limit (Tonnes)* Net Weight (lbs) Net Weight (kg) Replacement Sheave
8-502-02 3 Bronze Bushing 8-10 2 7 3 8-500-02
8-502-04 4.5 Bronze Bushing 10-13 4 13 6 8-500-04
8-502-08 6 Bronze Bushing 16-19 8 29 13 8-500-08
8-502-0808 8 Bronze Bushing 16-19 8 42 19 8-500-0808
8-502-0810 10 Bronze Bushing 16-19 8 45 21 8-500-0810
8-502-0812-16 12 Bronze Bushing 16 8 48 22 8-500-0812-16
8-502-0812-19 12 Bronze Bushing 19 8 48 22 8-500-0812-19
8-502-0814-16 14 Bronze Bushing 16 8 55 25 8-500-0814-16
8-502-0814-19 14 Bronze Bushing 19 8 55 25 8-500-0814-19

*Minimum Ultimate Load is 4 times the Working Load Limit.

Dimensions

Item No. B (mm) E (mm) F (mm) G (mm) L (mm) R (mm) T (mm)
8-502-02 27 64 26 75 250 224 20
8-502-04 34 82 35 107 355 320 31
8-502-08 48 112 61 152 488 427 40
8-502-0808 48 112 61 220 463 502 40
8-502-0810 48 112 61 264 603 542 40
8-502-0812-16 48 112 61 310 666 605 40
8-502-0812-19 48 112 61 310 666 605 40
8-502-0814-16 48 112 61 356 701 640 40
8-502-0814-19 48 112 61 356 701 640 40
Dimensional Drawing

 

Loads on Blocks

Angle Factor Multipliers

The Working Load Limit (WLL) for Yoke Group blocks indicates the maximum load that should be exerted on the block and its connecting fitting. This total load value may be different from the weight being lifted or pulled by a hoisting system. It is necessary to determine the total load being imposed on each block in the system to properly determine the rated capacity block to be used. A single sheave block used to change load line direction can be subjected to total loads greatly different from the weight being lifted or pulled. The total load value varies with the angle between the incoming and departing lines to the block.

The following chart indicates the factor to be multiplied by the line pull to obtain the total load on the block.

Angle Factor
Angle Factor Angle Factor
0 2 100 1.29
10 1.99 110 1.15
20 1.97 120 1
30 1.93 130 0.84
40 1.87 135 0.76
45 1.84 140 0.68
50 1.81 150 0.52
60 1.73 160 0.35
70 1.64 170 0.17
80 1.53 180 0
90 1.41 - -

Sheave Size and Wire Rope Strength

Ratio A Strength Efficiency Compared to Catalogue Strength in % Ratio A Strength Efficiency Compared to Catalogue Strength in %
40 95 8 83
30 93 6 79
20 91 4 75
15 89 2 65
10 86 1 50

Strength Efficiency

Bending wire rope reduces its strength. To account for the effect of bend radius on wire rope strength when selecting a sheave, use the table above.

Ratio B Relative Fatigue Bending Life Ratio B Relative Fatigue Bending Life
30 10 16 2.1
25 6.6 14 1.5
20 3.8 12 1.1
18 2.9 - -
Part N° Item No. Sheave Dia. (inch) Bearing Type Wire Rope Size (mm) Working Load Limit (Tonnes)* Net Weight (kg) Unit Price Quantity
2837-T28439
8-502-02 		8-502-02 3 Bronze Bushing 8-10 2 3 £  145.00
2837-T28440
8-502-04 		8-502-04 4.5 Bronze Bushing 10-13 4 6 £  270.00
2837-T28441
8-502-08 		8-502-08 6 Bronze Bushing 16-19 8 13 £  480.00
2837-T28442
8-502-0808 		8-502-0808 8 Bronze Bushing 16-19 8 19 £  520.00
2837-T28443
8-502-0810 		8-502-0810 10 Bronze Bushing 16-19 8 21 Quote Required
2837-T28444
8-502-0812-16 		8-502-0812-16 12 Bronze Bushing 16 8 22 £  1020.00
2837-T28445
8-502-0812-19 		8-502-0812-19 12 Bronze Bushing 19 8 22 £  1020.00
2837-T28446
8-502-0814-16 		8-502-0814-16 14 Bronze Bushing 16 8 25 Quote Required
2837-T28447
8-502-0814-19 		8-502-0814-19 14 Bronze Bushing 19 8 25 Quote Required
   
Description

+

Features

  • Manufactured with the highest quality tensile steel.
  • Available from 2 tonnes to 8 tonnes, for wire rope sizes 8mm to 19mm.
  • Part number, wire rope size and working load limit are marked on each block.
  • Permanent batch codes link to test certificates for easy traceability.
  • Supplied with bronze bushings and 3.0”-14” with pressure lube fittings.
  • Meets or exceeds all requirements of ASME B30.26.
  • Safety factor 4:1.
  • Fatigue rated.
  • Supplied with a Certificate of Conformity
  • Factory fitted with an RFID chip for serial and certificate traceability.
  • Sheave groove bottom is hardened to 35 Rc to maximise durability.
  • Closed die forged steel sheave

Specifications

Item No. Sheave Dia. (inch) Bearing Type Wire Rope Size (mm) Working Load Limit (Tonnes)* Net Weight (lbs) Net Weight (kg) Replacement Sheave
8-502-02 3 Bronze Bushing 8-10 2 7 3 8-500-02
8-502-04 4.5 Bronze Bushing 10-13 4 13 6 8-500-04
8-502-08 6 Bronze Bushing 16-19 8 29 13 8-500-08
8-502-0808 8 Bronze Bushing 16-19 8 42 19 8-500-0808
8-502-0810 10 Bronze Bushing 16-19 8 45 21 8-500-0810
8-502-0812-16 12 Bronze Bushing 16 8 48 22 8-500-0812-16
8-502-0812-19 12 Bronze Bushing 19 8 48 22 8-500-0812-19
8-502-0814-16 14 Bronze Bushing 16 8 55 25 8-500-0814-16
8-502-0814-19 14 Bronze Bushing 19 8 55 25 8-500-0814-19

*Minimum Ultimate Load is 4 times the Working Load Limit.

Dimensions

Item No. B (mm) E (mm) F (mm) G (mm) L (mm) R (mm) T (mm)
8-502-02 27 64 26 75 250 224 20
8-502-04 34 82 35 107 355 320 31
8-502-08 48 112 61 152 488 427 40
8-502-0808 48 112 61 220 463 502 40
8-502-0810 48 112 61 264 603 542 40
8-502-0812-16 48 112 61 310 666 605 40
8-502-0812-19 48 112 61 310 666 605 40
8-502-0814-16 48 112 61 356 701 640 40
8-502-0814-19 48 112 61 356 701 640 40
Dimensional Drawing

 

Load on Blocks

+

Loads on Blocks

Angle Factor Multipliers

The Working Load Limit (WLL) for Yoke Group blocks indicates the maximum load that should be exerted on the block and its connecting fitting. This total load value may be different from the weight being lifted or pulled by a hoisting system. It is necessary to determine the total load being imposed on each block in the system to properly determine the rated capacity block to be used. A single sheave block used to change load line direction can be subjected to total loads greatly different from the weight being lifted or pulled. The total load value varies with the angle between the incoming and departing lines to the block.

The following chart indicates the factor to be multiplied by the line pull to obtain the total load on the block.

Angle Factor
Angle Factor Angle Factor
0 2 100 1.29
10 1.99 110 1.15
20 1.97 120 1
30 1.93 130 0.84
40 1.87 135 0.76
45 1.84 140 0.68
50 1.81 150 0.52
60 1.73 160 0.35
70 1.64 170 0.17
80 1.53 180 0
90 1.41 - -

Sheave Size and Wire Rope Strength

Ratio A Strength Efficiency Compared to Catalogue Strength in % Ratio A Strength Efficiency Compared to Catalogue Strength in %
40 95 8 83
30 93 6 79
20 91 4 75
15 89 2 65
10 86 1 50

Strength Efficiency

Bending wire rope reduces its strength. To account for the effect of bend radius on wire rope strength when selecting a sheave, use the table above.

Ratio B Relative Fatigue Bending Life Ratio B Relative Fatigue Bending Life
30 10 16 2.1
25 6.6 14 1.5
20 3.8 12 1.1
18 2.9 - -
Pricing

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Crosby McKissick All Alloy Pulley Sheave Snatch Blocks. Hook Shackle or Tail Board Options, WLL 12,000kg
Western Blocks For Synthetic Fiber Rope with Loose Swivel Hooks.
Crosby 'N411B', 'N412B' & 'N413B' Loose Swivel Pulley Sheave Hooks, Optional No. of Sheaves (1-3), WLL Range from 900kg to 3630kg
Lebus General Purpose Snatch Blocks.
Crosby 'L170' Lebus Pulley Sheave Snatch Blocks, Hook, Shackle or Tail Board Options, WLL 4500kg
Light pulley block fitted with a bow shackle and built in RFID chip. To suit wire line sizes between 8 and 19mm.
Yoke 501 Series Snatch Block with Shackle - Range from 2000kg to 8000kg
For Wire Rope 10mm to 14mm, Non-CE
Gunnebo Galvanised Derrick Block, Range 4,000kg to 12,000kg
Suits 8mm to 29mm Wire Rope
Gunnebo Single Sheave Snatch Block with Hook, Range 2,000kg to 20,000kg
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