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Stren-Flex Lifting Slings, Strength and Flexibility In Lifting

Stren-Flex® Synthetic Round Slings, Synthetic Web Slings, Cargo Strap Tiedowns,Chain Slings, and Lifting Slings
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Member - Material Handling Industry of America
Member - Associated Wire Rope Fabricators Member - Web Sling & Tie Down Association

Wire Rope Slings

Wire rope slings are strong, efficient, and reliable accessories in the material handling industry. Wire rope functions as a excellent sling material in applications where a combination of strength and abrasion are necessary. Wire rope slings are available in an array of configurations to fit almost any application.

Ordering Wire Rope Slings

Part number break-down for wire rope slings

  1. Determine the load: The weight of the load must be known. This is always the starting point for selecting any sling
  2. Decide the hitch: Shape and bulk of the load must be accommodated as well as weight. One of the three basic hitches (vertical, choker, and vertical basket) will be sufficient for most lifts. The distinction for multiple leg bridle slings should be made during step two.
  3. Room to lift: Make certain the lifting device has sufficient headroom to raise the load to the height required. Headroom will affect the length of the sling.
  4. Length of the sling: By combining your decision regarding the type of hitch and headroom needed for maneuverability, the length of the sling needed can be calculated.
  5. Diameter of Sling: Determine the diameter of wire rope required to meet needed capacity for the lift.
  6. Working Load Limits: Double check that the combination of sling type, length and diameter chosen meet the working load limit when rigged at the desired angles. See Working Load Limit chart for further reference.

Wire Rope Sling Types

EE - Eye & Eye
STST - Slip Thru Thimble & Slip Thru Thimble
TT - Thimble & Thimble
CTCT - Crescent Thimble & Crescent Thimble
EH - Eye & Hook
TH - Thimble & Hook

Multi-Leg Bridle Sling Types

Two Leg Bridle Sling Three Leg Bridle Sling Four Leg Bridle Sling

Single Leg Wire Rope Sling Specifications and Capacities

Rope Class Rope Class (in.) Loop Size (in,) Min. leg length (ft.) Single Leg rated capacity (tons)
IWRC (Improved  plow steel) IWRC (Extra improved plow steel)
Vertical Choker Basket* Vertical Choker Basket*
6x19  or 6x37 1/4 2x4 1.5 .56 .41 1.1 .65 .48 1.3
5/16 2.5x5 2 .87 .64 1.7 1.0 .74 2.0
3/8 3x6 2 1.2 .92 2.4 1.4 1.1 2.8
7/16 3.5x7 2.5 1.7 1.2 3.4 1.9 1.4 3.8
1/2 4x8 2.5 2.2 1.6 4.4 2.5 1.9 5.0
9/16 4.5x9 3 2.8 2.0 5.6 3.2 2.4 6.4
5/8 5x10 3 3.4 2.5 6.8 3.9 2.9 7.8
3/4 6x12 3.5 4.9 3.6 9.8 5.6 4.1 11.
7/8 7x14 4 6.6 4.8 13 7.6 5.6 15
1 8x16 4.5 8.5 6.3 17 9.8 7.2 20
1 1/8 9x18 5.5 10 7.9 20 12 9.1 24
* These values apply only when the diameter of the curvature at the point of contact (D/d)
   is 20 times the rope diameter or greater.

2-Leg Bridle Wire Rope Sling Specifications and Capacities

Rope Dia. (in.) Min. Sling Length  **Eye Hook Cap. (tons) Rated Cap. (Tons*) Alloy Oblong Link
60° 45° 30° Dia. Inside Length (in.) Inside Width (in.)
6 x 19 EIP, IWRC 1/4" 1' 6" 1 1.10 0.91 0.65 1/2" 4.838 2.688
5/16" 1' 6" 1 1.70 1.40 1.00 1/2" 4.838 2.688
3/8" 1' 10" 1.5 2.50 2.00 1.40 1/2" 4.838 2.688
7/16" 1' 10" 2 3.40 2.70 1.90 3/4" 6.611 3.719
1/2" 2 '0" 3 4.40 3.60 2.50 3/4" 6.611 3.719
9/16" 2 '0" 3 5.50 4.50 3.20 3/4" 6.611 3.719
5/8" 2' 6" 5 6.80 5.50 3.90 1" 7.526 4.301
3/4" 3' 0" 5 9.70 7.90 5.60 1 1/4" 9.261 5.292
7/8" 3' 6" 7.5 13.00 11.00 7.60 1 1/4" 9.261 5.292
1" 3' 6" 11 17.00 14.00 9.80 1 1/2" 11.025 6.300
6 x 37 EIP, IWRC 1 1/8" 4' 0" 11 21.00 17.0 12.00 1 1/2" 11.025 6.300
1 1/4" 4' 6" 15 26.00 21.0 15.00 1 3/4" 12.863 7.350
1 3/8" 5' 0" 15 31.00 25.0 18.00 1 3/4" 12.863 7.350
1 1/2" 5' 6" 22 37.00 30.0 21.00 2" 14.700 8.400

3-Leg Bridle Wire Rope Sling Specifications and Capacities

Rope Dia. (in.) Min. Sling Length  **Eye Hook Cap. (tons) Rated Cap. (Tons*) Alloy Oblong Link
60° 45° 30° Dia. Inside Length (in.) Inside Width (in.)
6 x 19 EIP, IWRC 1/4" 1' 6" 1 1.70 1.40 0.97 1/2" 4.838 2.688
5/16" 1' 6" 1 2.60 2.10 1.50 1/2" 4.838 2.688
3/8" 1' 10" 1.5 3.70 3.00 2.20 3/4" 6.611 3.719
7/16" 1' 10" 2 5.00 4.10 2.90 3/4" 6.611 3.719
1/2" 2 '0" 3 6.60 5.40 3.80 1" 7.526 4.301
9/16" 2 '0" 3 8.30 6.80 4.80 1" 7.526 4.301
5/8" 2' 6" 5 10.00 8.30 5.90 1 1/4" 9.261 5.292
3/4" 3' 0" 5 15.00 12.00 8.40 1 1/2" 11.025 6.300
7/8" 3' 6" 7.5 20.00 16.00 11.00 1 1/2" 11.025 6.300
1" 3' 6" 11 26.00 21.00 15.00 1 3/4" 12.863 7.350
6 x 37 EIP, IWRC 1 1/8" 4' 0" 11 31.00 26.00 18.00 1 3/4" 12.863 7.350
1 1/4" 4' 6" 15 38.00 31.00 22.00 2" 14.700 8.400
1 3/8" 5' 0" 15 46.00 38.00 27.00 2 1/4" 16.538 9.450
1 1/2" 5' 6" 22 55.00 45.00 32.00 2 1/4" 16.538 9.450

4-Leg Bridle Wire Rope Sling Specifications and Capacities

Rope Dia. (in.) Min. Sling Length  **Eye Hook Cap. (tons) Rated Cap. (Tons*) Oblong Link Stock Dia.
60° 45° 30° Dia. Inside Length (in.) Inside Width (in.)
6 x 19 EIP, IWRC 1/4" 1' 6" 1 2.20 1.80 1.30 1/2" 4.838 2.688
5/16" 1' 6" 1 3.50 2.80 2.00 3/4" 6.611 3.719
3/8" 1' 10" 1.5 5.00 4.10 2.90 3/4" 6.611 3.719
7/16" 1' 10" 2 6.70 5.50 3.90 1" 7.526 4.301
1/2" 2 '0" 3 8.80 7.10 5.10 1" 7.526 4.301
9/16" 2 '0" 3 11.00 9.00 6.40 1 1/4" 9.261 5.292
5/8" 2' 6" 5 14.00 11.00 7.80 1 1/2" 11.025 6.300
3/4" 3' 0" 5 19.00 16.00 11.00 1 3/4" 12.863 7.350
7/8" 3' 6" 7.5 26.00 21.00 15.00 2" 14.700 8.400
1" 3' 6" 11 34.00 28.00 20.00 2 1/4" 16.538 9.450
6 x 37 EIP, IWRC 1 1/8" 4' 0" 11 42.00 34.0 24.00 2 3/4" 20.213 11.55
1 1/4" 4' 6" 15 51.00 42.0 30.00 2 3/4" 20.213 11.55
1 3/8" 5' 0" 15 ­ ­ ­ ­ ­ ­
1 1/2" 5' 6" 22 ­ ­ ­ ­ ­ ­

1 ton = 2000lbs.
Warning: Horizontal sling angles less than 30° shall not be used.
Do not exceed rated capacities.
*Rated capacities basket hitch based on D/d ratio of 25.
**Working load limit based on standard carbon fittings unless stated otherwise.

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