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LiftAlloy
DOUBLE CHAIN SLINGS






LiftAlloy chain
slings, available in grade 100 for 7/32"
through 3/4", and grade 80 for 7/8" up to 11/4"
are
recommended for rugged industrial applications in harsh
environments where flexibility, abrasion resistance, and
long life are required. OSHA required annual inspections
can be performed by our trained personnel.




Use
of Chain Under Heat Conditions 

When
the chain itself is heated to temperatures shown
below, the Working Load Limit (Rated Capacity) should
be reduced as indicated. 



FEATURES,
ADVANTAGES AND BENEFITS 



Promotes Safety
• Permanent steel capacity tag is serialized for identification
• Welded slings offer the security of tamper proof assemblies.
Saves Money
• Alloy Steel construction assures long lift.
• Can be repaired, proof tested and recertified.
Saves Time
• Easy to inspect for damage.
• Stores easily.




LiftAlloy
DOUBLE CHAIN SLINGS







Order
Online, by Phone, or by EMail 



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PRICING
 DOUBLE CHAIN SLINGS 
Type
DOS (CONTACT US FOR SPECIAL LENGTHS)

Chain
Size
(in.) 
¹Rated
*Cap.@
60°
(lbs.) 
Approx.
Wgt.
5 foot
Reach
(lbs.) 
Grade

3' 
4' 
5' 
6' 
8' 
10' 
12' 
14' 
16' 
18' 
20' 
Latch
Kits ea.
Per hook 
7/32

4,700

8

100













9/32

7,400

10

100













3/8

15,200

17

100













1/2

26,000

32

100













5/8

39,100

51

100













3/4

61,100

74

100













7/8

59,200

99

80













1

82,600

134

80













1
1/4

125,200

211

80
















PRICING
 DOUBLE
CHAIN SLINGS 
Type
DOG (CONTACT US FOR SPECIAL LENGTHS)

Chain
Size
(in.) 
¹Rated
*Cap.@
60°
(lbs.) 
Approx.
Wgt.
5 foot
Reach
(lbs.) 
Grade 
3' 
4' 
5' 
6' 
8' 
10' 
12' 
14' 
16' 
18' 
20' 
Latch
Kits ea.
Per hook 
7/32

4,700

8

100













9/32

7,400

10

100













3/8

15,200

17

100













1/2

26,000

32

100













5/8

39,100

51

100













3/4

61,100

74

100













7/8

59,200

99

80













1

82,600

134

80













1
1/4

125,200

211

80















¹ Rated Capacity also referred to as Working
Load Limit.
When using chain slings in a choke hitch, reduce the sling’s
rated capacity by 20%. 




* 
Do
not exceed rated capacities. Sling capacity decreases as the
angle from horizontal decreases.
Slings should not be used at angles of less than 30°. Refer
to chain chart and Effect of Angle chart below. 





Order
Online, by Phone, or by EMail 



~
Add items to your online shopping cart ~
Click a Price of the item you
wish to purchase.




PRICING
 DOUBLE
CHAIN SLINGS 
Type
DOF (CONTACT US FOR SPECIAL LENGTHS)

Chain
Size
(in.) 
¹Rated
*Cap.@
60°
(lbs.) 
Approx.
Wgt.
5 foot
Reach
(lbs.) 
Grade 
3' 
4' 
5' 
6' 
8' 
10' 
12' 
14' 
16' 
18' 
20' 
Latch
Kits ea.
Per hook 
9/32 
7,400

10

100













3/8 
15,200

17

100













1/2 
26,000

32

100













5/8 
39,100

51

100













3/4 
61,100

74

100













7/8 
59,200

99

80













1 
82,600

134

80













1 1/4 
125,200

211

80
















PRICING
 DOUBLE
CHAIN SLINGS 

Type
DOL (CONTACT US FOR SPECIAL LENGTHS)

Chain
Size
(in.) 
¹Rated
*Cap.@
60°
(lbs.) 
Approx.
Wgt.
5 foot
Reach
(lbs.) 
Grade 
3' 
4' 
5' 
6' 
8' 
10' 
12' 
14' 
16' 
18' 
20' 
Latch
Kits ea.
Per hook 
9/32 
7,400

10

100













3/8 
15,200

17

100













1/2 
26,000

32

100













5/8 
39,100

51

100














¹ Rated Capacity also referred to as Working
Load Limit.
When using chain slings in a choke hitch, reduce the sling’s
rated capacity by 20%. 




* 
Do
not exceed rated capacities. Sling capacity decreases as the
angle from horizontal decreases.
Slings should not be used at angles of less than 30°. Refer
to chain chart and Effect of Angle chart below. 


















CHAIN SLING BASICS









LiftAlloy
Grade 100 

Chain
Wear Allowance 


















Determine
wear by measuring cross section at link
ends. If worn to less than the minimum thickness
allowable, chain should be removed from service. 

Available in sizes 7/32" through 3/4".
Higher
capacity per chain size can be used as an
increased safety factor.
Higher
capacity may allow use of smaller diameter
chain for your lifts, reducing sling weight
and cost.
Extreme
abrasion resistance  more durable.
Powdercoated
attachments for corrosion resistance. 










Minimum
thickness
based on OSHA
recommendations. 












LiftAlloy
Grade 80 





















Available in sizes 7/8" through 11/4".
Greater
temperature tolerance. 






Chain
Size (in.)

Min.
Allowable
Thickness  A (in.)

7/32

0.189

9/32

0.239

3/8

0.342

1/2

0.443

5/8

0.546

3/4

0.687

7/8

0.75

1

0.887

11/4

1.091








All
Chain Slings 








Meet or exceed all OSHA, ASTM and NACM standards.
Welded
or mechanically assembled. 







¹Rated
Capacity Chart for LiftAlloy Chain Slings 
Size of
Chain 







Nominal
Dim. (in.) 
Approx.
no. of
Links
per ft. 
Approx.
Weight
per
100 ft.
(lbs.) 
(In.) 
(mm) 
Single
Chain @
90º (lbs.) 
Double Chain
Slings* (lbs.) 
Triple & Quad Chain
Slings* (lbs.)** 
Inside
Length 
Inside
Width 
Grade 100 
7/32 
5.5 
2,100 
3,600 
3,000 
2,100 
5,450 
4,450 
3,150 
0.671 
0.296 
17.9 
45 
9/32 
7.0 
3,500 
6,100 
4,900 
3,500 
9,100 
7,400 
5,200 
0.868 
0.395 
13.8 
74 
3/8 
10.0 
7,100 
12,300 
10,000 
7,100 
18,400 
15,100 
10,600 
1.222 
0.572 
9.8 
146 
1/2 
13.0 
12,000 
20,800 
17,000 
12,000 
31,200 
25,500 
18,000 
1.404 
0.720 
8.5 
258 
5/8 
16.0 
18,100 
31,300 
25,600 
18,100 
47,000 
38,400 
27,100 
1.733 
0.854 
6.9 
387 
3/4 
20.0 
28,300 
49,000 
40,000 
28,300 
73,500 
60,000 
42,400 
2.160 
1.052 
5.5 
622 
Grade
80 
7/8 
22.0 
34,200 
59,200 
48,400 
34,200 
88,900 
72,500 
51,300 
2.250 
1.137 
5.3 
776 
1 
26.0 
47,700 
82,600 
67,400 
47,700 
123,900 
101,200 
71,500 
2.664 
1.348 
4.5 
995 
1 1/4 
32.0 
72,300 
125,200 
102,200 
72,300 
187,800 
153,400 
108,400 
3.250 
1.656 
3.7 
1,571 

¹
Rated Capacity also referred to as Working Load Limit. 
When
using chain slings in a choke hitch, reduce the sling’s
rated capacity by 20% 

**
A quad branch chain sling, especially when used on a load of
rigid structure, is usually not sustaining the load evenly distributed
on
each of its four branches. The maximum working load limits are
therefore set at the same values as for triple branch chain
slings of equal
quality and size and used with branches at same angle of inclination. 



* 

Do
not exceed rated capacities. Sling capacity decreases as the
angle from horizontal decreases. Slings should
not be used at angles of less than 30º. Refer to chain
chart above and Effect of Angle chart below. 












EFFECT
OF SLING ANGLE 









Using
slings at an angle can become deadly if that angle is
not taken into consideration when selecting the sling to
be used. The tension on each leg of the sling is increased as
the angle of lift, from horizontal, decreases. It is most
desirable for a sling to have a larger angle of lift, approaching
90°. Lifts with angles of less than 30° from horizontal
are not recommended. If you can measure the angle of lift or
the length and height of the sling as rigged, you can
determine the properly rated sling for your lift. The Increased
Tension method provides the increased tension as a
function of the sling angle. Alternatively, the sling Reduced
Capacity method may be used to determine reduced lift
capacity for any angle. 









INCREASED
TENSION
Determine capacity
of sling needed


REDUCED
CAPACITY
Calculate rating of each
sling
rigged at this angle






1.
Determine the load weight (LW). 
1.
Calculate the reduction factor (RF). 




a.
Using the angle from horizontal,
read across the Angle Chart to
the corresponding number of the
Reduction Factor column. 
2.
Calculate the Tension Factor [TF]. 


a.
Determine the sling angle as mea
sured from the horizontal, and the
corresponding tension factor (TF)
from the effect of angle chart. 



OR



b.
Divide sling height* (H) by sling
length* (L). 

OR




b.
Length* (L) divided by height*
(H) 





2.
Reduction factor (RF) x the sling’s
rated capacity for the type hitch that
will be used = sling’s reduced rating. 












3.
Determine the share of the load
applied to each sling leg (LW). 

















4.
Multiply (LW) by (TF) to determine
the sling leg tension. The capacity of
the selected sling or sling leg must
meet the calculated tension value. 


*Measured
from a common horizontal
plane to the hoisting hook. 












*Measured
from a common horizontal plane
to the hoisting hook. 


















Effect
of Angle Chart





Tension
Factor (TF) 
Angle From
Horizontal 
Reduction
Factor (RF) 
1.000 
90º 
1.000 
1.004 
85º 
0.996 
1.015 
80º 
0.985 
1.035 
75º 
0.966 
1.064 
70º 
0.940 
1.104 
65º 
0.906 
1.155 
60º 
0.866 
1.221 
55º 
0.819 
1.305 
50º 
0.766 
1.414 
45º 
0.707 
1.555 
40º 
0.643 
1.742 
35º 
0.574 
2.000 
30º 
0.500 









Example: 



Vertical
Choker rating of each sling:
6,000 lbs.
Measured Length (L) = 6 ft.
Measured Height (H) = 4 ft.
Reduction Factor (RF) = 4 (H) ÷ 6 (L) = .667 




Example: 



Load
weight = 1,000 lbs.
Rigging  2 slings in vertical hitch
Lifting Weight (LW) per sling = 500 lbs.
Measured Length (L) = 10 ft.
Measured Height (H) = 5 ft.
Tension Factor (TF) = 10 (L) ÷ 5 (H) = 2.0
Minimum Vertical Rated Capacity required
for this lift = 500 (LW) x 2.0 (TF) = 1000 lbs.
per sling 

Sling
capacity decreases as the angle
from horizontal decreases. Sling angles
of less than 30° are not recommended. 


Reduced
sling rating in this configuration
= .667 

(RF)
x 6,000 lbs. = 4,000 lbs. of lifting
capacity per sling 







LiftAlloy Single
Chain Slings, LiftAll, Sling, Lifting Slings, Sling Hook,
Grab Hook, Foundry Hook, Latch Hook, Double
Chain Slings, Triple Chain Slings, Quad Chain Slings, and
Basket Type Chain Slings from your source for material
handling equipment.

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