Grade 80 Lifting Chain

Working
Load Limit
Lbs
Rod
Diam
Inches
A
Inches
B
Inches
Drum
Length
Feet
N.W.
Lbs per Ft.
2,500 7/32 0.71 0.31 800 0.5
3,500 9/32 0.83 0.36 500 0.7
4,500 5/16 0.95 0.41 500 0.9
7,100 3/8 1.18 0.51 500 1.5
12,000 1/2 1.54 0.67 300 2.5
18,100 5/8 1.89 0.82 200 3.8
28,300 3/4 2.36 1.02 100 6.0
34,200 7/8 2.60 1.13 100 7.2
47,700 1 3.07 1.33 100 10.1
72,300 1 1/4 3.78 1.64 90 15.3

* Design factor 4:1 proof tested and certified

 

Oblong Master Link

Trade Size
Inches
Chain Size Inches Working Load
Limit Lbs
Dim. Inches N.W.
Lbs
1 Leg 2 Leg IL IW D
3/8 7/32 4,400 3.94 2.36 0.43 0.4
1/2 1/4 – 5/16 7/32 7,000 4.72 2.76 0.55 0.8
5/8 3/8 1/4 – 5/16 9,000 5.51 3.15 0.67 1.5
3/4 3/8 12,300 5.91 3.54 0.75 2.2
7/8 1/2 3/8 14,000 6.30 3.74 0.87 3.3
1 5/8 24,360 7.48 4.33 0.98 4.8
1-1/8 5/8 1/2 30,000 7.09 4.13 1.10 5.9
1-1/4 3/4 36,000 7.87 4.72 1.18 7.7
1-3/8 7/8 5/8 42,000 9.45 5.51 1.34 11.2
1-1/2 3/4 54,300 9.84 5.91 1.50 15.4
1-5/8 1 7/8 66,000 9.84 5.91 1.57 17.6
1-3/4 1-1/4 1 85,000 11.81 7.09 1.77 26.4
2 1 102,600 13.77 7.67 1.96 36.5
2-1/4 1-1/4 145,000 16.14 8.66 2.28 57.2
2-3/4 193,100 19.29 10.43 2.75 100.0

Forged Oblong Master Links
Welded Oblong Master Links
Design factor 5:1 proof tested and certified

 

Oblong Master Link Assembly. Code” MFB “

Designed for use with chain.

WLL (lbs)
ß 0-45°
WLL (lbs)
ß 45-60°
For Grade
80 Chain (In)
3 or 4 Leg
Dimensions Inches N.W.
Lbs
D IW IL d lw ll
6,800 6,800 7/32 0.55 2.36 5.12 0.39 0.63 1.18 1.3
10,100 7,900 1/4-5/16 0.79 3.54 6.30 0.51 1.38 2.36 3.5
17,200 12,500 3/8 0.98 4.33 7.68 0.63 1.57 3.15 7.0
30,800 26,600 1/2 1.26 5.51 9.45 0.87 1.97 3.54 14.3
54,600 46,300 5/8 1.57 5.51 10.63 1.10 2.36 3.94 25.5
73,400 56,000 3/4 1.77 6.10 11.81 1.26 2.95 4.92 37.4
81,800 81,800 7/8 1.97 7.48 13.78 1.57 3.15 5.51 58.1
110,200 110,200 1 2.36 8.66 16.14 1.77 3.54 6.50 93.1
164,900 146,100 1-1/4 2.76 9.84 16.54 1.97 3.94 7.68 134.3

* Design factor 4:1 proof tested and certified

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