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In stock
SKU: YOK000069

Yoke Super Snatch Block With Shackle

From: £1,845.00
  • 20 tonne Capacity
  • 25-29mm Wire rope size
  • 8-12" / 203-305mm Sheave diameter
  • Bronze bushings and grease fitting
  • ASME B30.26 - 2010
Final Configuration Price:
From: £1,845.00
Estimated time to dispatch
Estimated time to dispatch: Same Day Before 2pm
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Flexible Payment
Choose from a range of payment options to suit you from Klarna to a credit account.
Same Day Dispatch
Place your order before 2:00pm Monday-Thursday to receive your order the next working day*
Best Rated
We are the best rated Lifting Company in the UK with 50 years of experience & knowledge
Price Match Guarantee
We always strive to be the best on price and never knowingly undersold
Shipping & Delivery

We don't send anything by standard post, all of our deliveries are by trusted couriers which are fully traceable to ensure your orders arrive safe and on time.

Delivery Prices & Transit Times

EXPRESS DELIVERY - Next Working Day Courier, delivered between 08:30-17:00 from £9.99

Highlands Delivery: 1-2 Day Courier (after dispatch) for post codes LV, PH, KW1-14, PA37-39. from £35.00

UK Before 10:30AM: (please call first to check availability) from £25.00

UK Express Saturday Delivery: from £65.00

Click & Collect: Free!

Channel Islands: 1-3 Day Courier (Jersey, Guernsey and Isle of Man) from £45.00

Western Europe: (Netherlands, France, Belgium, Spain, Portugal) from £45.00

Eastern Europe: Price on Request

Rest of the world: Price on Request

DELIVERY CUT-OFF

  • For all orders placed by 2pm we will endeavour to dispatch same day for delivery the following day.
  • All orders after 2pm will dispatch the following working day.
  • For urgent shipments and 'last minute' requirements, please call our Sales Team -  it's always worth asking if we can still get it out the door today!

Please be aware that some of our products have a lead time, and therefore the quoted transit times above are only applicable after the goods have been dispatched. We always make it clear in the description if our products have a lead time.

We regret that we cannot provide time slots for deliveries unless you have selected pre 10:30AM delivery, all standard express deliveries are delivered between 08:30-17:00 the next working day from dispatch.

Collection of most goods can be made from our warehouse upon request. Did you know that we have a range of slings, shackles and hoists available for instant Click & Collect? While nearly all items on our website can be collected next working day! Call our sales team now on 01384567430

Yoke Super Snatch Blocks with Shackle are mega strong and capable of 20.0 tonnes Working Load Limit. Choose between 8-12 Inch Sheave diameter (203-305mm) that suits a wire rope size of 25-29mm. These are seriously heavy-duty and ideal for oilfields and offshore applications.

  • 20 tonne Capacity
  • 25-29mm Wire rope size
  • 8-12" / 203-305mm Sheave diameter
  • Bronze bushings and grease fitting
  • ASME B30.26 - 2010

DIMENSIONAL SPECIFICATIONS

Part Code

WLL
tonnes

Sheave Dia.
mm

Wire Rope
Size
mm

a
mm
b
mm
e
mm
f
mm
g
mm
k
mm
l
mm
r
mm

Mass
kg

8-501-02

2.0

76

8-10 35 30 64 11 75 150 228 217 3.8

8-501-04

4.0

114

10-13 64 50 79 19 107 243 356

336

6.2

8-501-08

8.0

152

16-19 87 76 104 32 152 320 484 452

13.2

8-501-0808

8.0

203

16-19 87 76 104 32 220 333 558 526

18.2

8-541-12

12.0

152

19-22 78 80 134 44 167 359 540 496

24.8

8-541-15

15.0

203

19-22 78 80 134 44 220 355 589 545

29.6

8-541-1510

15.0

254

19-22 78 80 134 44 280 423 714 670

42.7

8-501-1512

15.0

305

19-22 78 80 134 44 330 428 770 726

52.8

8-551-20

20.0

203

25-29 109 93 150 55 216 433 671 616

41.6

8-551-2010

20.0

254

25-29 109 93 150 55 280 481 778 723

52.4

8-551-2012-29

20.0

305

25-29 109 93 150 55 330 485 883 778

62.8

Part Code

WLL
tonnes

Sheave Dia.
inches

Wire Rope
Size
inch

a
inch
b
inch
e
inch
f
inch
g
inch
k
inch
l
inch
r
inch

Mass
lbs.

8-501-02

2 3 5/16 - 3/8 1.38 1.18 2.52 0.43 2.95 5.91 8.96 8.53 4.4

8-501-04

4 4-1/2 3/8 - 1/2 2.52 1.97 3.11 0.75 4.21 9.57 14.02 13.27 13.0

8-501-08

8 6 5/8 - 3/4 3.43 2.99 4.09 1.26 5.98 12.60 19.06 17.80 28.7

8-501-0808

8 8 5/8 - 3/4 3.43 2.99 4.09 1.26 8.66 13.10 21.90 20.64 43.0

8-541-12

12 6 3/4 - 7/8 3.07 3.15 5.28 1.73 6.57 14.13 21.26 19.63 53.6

8-541-15

15 8 3/4 - 7/8 3.07 3.15 5.28 1.73 8.66 13.99 23.19 21.46 65.1

8-541-1510

15 10 3/4 - 7/8 3.07 3.15 5.28 1.73 11.00 16.70 28.10 26.37 94.8

8-501-1512

15 12 3/4 - 7/8 3.07 3.15 5.28 1.73 13.00 16.80 30.30 28.57 117.9

8-551-20

20 8 1 - 1-1/8 4.29 3.66 5.91 2.17 8.50 17.05 26.42 24.25 90.8

8-551-2010

20 10 1 - 1-1/8 4.29 3.66 5.91 2.17 11.00 18.90 30.60 28.46 119.0

8-551-2012-29

20 12 1 - 1-1/8 4.29 3.66 5.91 2.17 13.00 19.10 32.80 30.63 137.8

LOADS ON BLOCKS

Angle Factor Mutipliers

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
0 2.00 100 1.29
10 1.99 110 1.15
20 1.97 120 1.00
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 0.00
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

Ratio A = Sheave Diameter ÷ Rope Diameter

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 10.0 16 2.1
25 6.6 14 1.5
20 3.8 12 1.1
18 2.9 - -

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