Calculation of working load limit

Roundslings

Roundsling of polyester can be delivered up to WLL 300 tons. Slings should be protected from edges, friction and abrasion, whether from the load or the lifting appliance.

Lifting angle Straight U-type Chocked 1 leg 2 legs 3-4 legs
      0°-45° 45°-60° 0°-45° 45°-60° 0°-45° 45°-60°
Factor 1 2 0.8 1.4 1 1.4 1 2.1 1.5
Color Working Load Limit  
violet 1.0 2.0 0.8 1.4 1.0 1.4 1.0 2.1 1.5
green 2.0 4.0 1.6 2.8 2.0 2.8 2.0 4.2 3.0
yellow 3.0 6.0 2.4 4.2 3.0 4.2 3.0 6.3 4.5
grey 4.0 8.0 3.2 5.6 4.0 5.6 4.0 8.4 6.0
red 5.0 10.0 4.0 7.0 5.0 7.0 5.0 10.5 7.5
brown 6.0 12.0 4.8 8.4 6.0 8.4 6.0 12.6 9.0
blue 8.0 16.0 6.4 11.2 8.0 11.2 8.0 16.8 12.0
orange 10.0 20.0 8.0 14.0 10.0 14.0 10.0 21.0 15.0
orange 12.0 24.0 9.6 16.8 12.0 16.8 12.0 25.2 18.0
orange 15.0 30.0 12.0 21.0 15.0 21.0 15.0 31.5 22.5
orange 20.0 40.0 16.0 28.0 20.0 28.0 20.0 42.0 30.0

Safety Factor 7:1
LVS EN 1492-2

Webbing Slings

Flat woven, colour coded slings with folded soft eyes. Slings should be protected from edges, friction and abrasion, whether from the load or the lifting appliance.

Lifting angle Straight U-type Chocked 1 leg 2 legs 3-4 legs
      0°-45° 45°-60° 0°-45° 45°-60° 0°-45° 45°-60°
Factor 1 2 0.8 1.4 1 1.4 1 2.1 1.5
Width Working Load Limit  
50 mm 1.0 2.0 0.8 1.4 1.0 1.4 1.0 2.1 1.5
60 mm 2.0 4.0 1.6 2.8 2.0 2.8 2.0 4.2 3.0
90 mm 3.0 6.0 2.4 4.2 3.0 4.2 3.0 6.3 4.5
120 mm 4.0 8.0 3.2 5.6 4.0 5.6 4.0 8.4 6.0
150 mm 5.0 10.0 4.0 7.0 5.0 7.0 5.0 10.5 7.5
180 mm 6.0 12.0 4.8 8.4 6.0 8.4 6.0 12.6 9.0
240 mm 8.0 16.0 6.4 11.2 8.0 11.2 8.0 16.8 12.0
300 mm 10.0 20.0 8.0 14.0 10.0 14.0 10.0 21.0 15.0

Safety Factor 7:1
LVS EN 1492-1

 

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