Grade 80 and 100 – High Resistance Chain Slings

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Grade 80 and 100 – High Resistance Chain Slings

EN-818-4 Standard

At IZAJES, you find the entire range of GRADE 80 and GRADE 100 High Resistance Chain Slings.

Single, double, three- and four-legged, with a wide variety of finishings.

Advantages of choosing slings  Izajes y Transmisiones

  • IRAM – ISO 9001:2015 Certified manufacturing process.
  • Rings, connectors, hooks and other accessories, only of certified brands.
  • Quality Certificate issued by IZAJES y TRANSMISIONES S.A.

Chain Slings

 Loads – Single-Leg Slings Loads – Multi-Leg Slings
Number of legs, n – – – 2 legs 3 & 4 legs
Inclination angle in relation to the vertical, ß – – – ß>45º 45º>ß>60º ß>45º 45º>ß>60º
Angle between opposite legs, a – – – a>90º 90º>a>120º a>90º 90º>a>120º
Factor to calculate Maximum Working Load (MWL), f=n.cosß 1 0.8 2 1.4 1 2.1 1.5
Nominal Dimension MAXIMUM WORKING LOAD MWL (kg) EN 818-4, safety factor 4:1
(mm) Balance-loaded Chain Slings
6 1,120 896 2,240 1,600 1,120 2,360 1,700
7 1,500 1,200 3,000 2,120 1,500 3,150 2,240
8 2,000 1,600 4,000 2,800 2,000 4,250 3,000
10 3,150 2,520 6,300 4,250 3,100 6,700 4,750
13 5,300 4,240 10,600 7,500 5,300 11,200 8,000
16 8,000 6,400 16,000 11,200 8,000 17,000 11,800
19 11,200 8,960 22,400 16,000 11,200 23,000 17,000
22 15,000 12,000 30,000 21,200 15,000 31,500 22,400
26 21,200 16,960 42,400 30,000 21,200 45,000 31,500
32 31,500 25,200 63,000 44,100 31,500 67,000 47,250
data sheet Grade 80 – 100 Chain SlingsDownload

Information on Chain Slings

MAXIMUM WORKING LOAD

Safety Factor. To calculate the Maximum Working Loads stated in the tables, a Safety Factor = 4 has been applied.

Symmetrical Load. It is assumed that in 3- and 4-leg chain octopus, the load is supported by a maximum of 3 legs if the following is true:

  • The center of gravity of the load is centered on the geometry of the octopus.
  • All legs must have the same inclination angle (if necessary, shortening hooks are fitted).
  • In the event of a three-leg octopus, legs must be fastened so that they form a 120º angle with respect to each other.

Asymmetrical Load. If working with a load with asymmetrically placed hooks, the working load limit will be reduced by 50% with respect to the working load that would be the limit under normal conditions.

Cargo lashing by hanging, or with basket slings. The working load limit must be reduced to 80% of nominal value.

Temperature Resistance. The values stated in the table must be considered in order to use 80 Grade Chain Slings at extremely high temperatures.

MAINTENANCE – IDENTIFICATION PLATE

Chain Temperature New Working Load Limit in %
in relation to the values stated in the Working
Load Limit tables under normal conditions.
-40 ºC up to + 200 ºC
+200 ºC up to + 300 ºC
+300 ºC up to + 400 ºC		 100%
90%
75%

USE

  • No lifting with a twisted chain.
  • Chains must be shortened solely with shortening hooks. Knots must be avoided.
  • When handling loads with sharp or cutting tips or edges, the chains must be protected with appropriate padding.
  • Hooks must not grip loads with their ends, but with their inner parts.
  • Hooks not used during lifting must be fastened to the main ring.
  • Make sure that the ring can move freely on the crane hook.
  • Replace damaged accessories as soon as they are detected.
  • Do not overload the chains; check that the angle inclination is complied with, and, if in doubt, choose a larger chain.

MAINTENANCE – IDENTIFICATION PLATE

Chain slings must be inspected at least once a year by an expert, and load testing (MPI) must be performed at least every three years.
The technical data stated on the plate helps the user to use chain slings properly.

  • Chain thickness.
  • Number of legs.
  • Inclination angle.
  • Working load limit.

ADVANTAGES TO CHOOSING OUR SLINGS

  • Manufacturing process under IRAM Certification – ISO 9001:2015.
  • Rings, connectors, hooks and other accessories, only of certified brands.
  • Quality Certificate issued by Izajes y Transmisiones S.A.

Maintenance

WORKING LOADS 1 LEG 2 LEGS 3 & 4 LEGS

CHAIN SLINGS
GRADE 80
mm   ß 0-45º
α 0-90º		 ß 45-60º
α 90-120º		 ß 0-45º
α 0-90º		 ß 45-60º
α 90-120º
6 1.12 1.6 1.12 2.36 1.7
7 1.50 2.12 1.5 3.15 2.24
8 2.0 2.8 2.0 4.25 3.0
10 3.15 4.25 3.15 6.7 4.75
13 5.3 7.5 5.3 11.2 8.0
16 8.0 11.2 8.0 17.0 11.8
19 11.2 16.0 11.2 23.6 17.0
22 15.0 21.2 15.0 31.5 22.4
26 21.2 30.0 21.2 45.0 31.5
32 31.5 45.0 31.5 67.0 55
WORKING LOADS 1 LEG 2 LEGS 3 & 4 LEGS

CHAIN SLINGS
GRADE 100
mm   ß 0-45º
α 0-90º		 ß 45-60º
α 90-120º		 ß 0-45º
α 0-90º		 ß 45-60º
α 90-120º
6 1.5 2.12 1.5 3.15 2.24
8 2.5 3.5 2.5 5.2 3.7
10 4.0 5.6 4 8.4 6
13 6.7 9.5 6.7 14.0 10
16 10 14 10 21.0 15
20 16 22.4 16 33.6 24
22 19 26.9 19.0 40.3 28.5
26 27.0 38.2 27.0 57.3 40.5

Recommendations

Unwinding

The coil should be breaked while unwinding so that the wire rope comes out with a certain pressure and does not turn on its axis. This prevents bumps and kinks. If the coil is not equipped with brakes, then an operator should stop it..

Cables de Acero

Transport between coils

When the wire rope is carried from a full coil to an empty one or to a machine drum, this should be done from the upper or lower part of both, but never from the upper part of one coil and the lower part of the other, or vice versa.

Cables de Acero

Wire rope winding

The wire rope winding on the machine drum must be carried out correctly so that there are no spires overlapping and cross-linking, which would crush and distort the cords. The following figures represent the four cases that could effectively take place:

  1. Right torsional wire winding at the upper part of the drum.
    The mooring point should be located on the left side of the drum.
  2. Right torsional wire winding at the lower part of the drum.
    The mooring point should be located on the right side of the drum.
  3. Left torsional wire winding at the lower part of the drum.
    The mooring point should be located on the right side of the drum.
  4. Left torsional wire winding at the lower part of the drum.
    The mooring point should be located on the left side of the drum.

We do not recommend winding the wire around the drum in several layers, but if so, this technique is applied for the first layer of winding.

Cables de Acero

Deflection angle

The deflection angle is that formed by the wire from the first fixed pulley on the edge of the winding drum. It should not exceed 1º 30'.

Cables de Acero

Wire cutting

Cutting with shears or scissors. Before cutting, wires are to be tied together on both sides of the cutting area. The number of ties, the width and the distance between them depend on the wire diameter (see table). It is key to avoid longitudinal tilts among the different cord layers, since, in that case, those which have moved the least will bear the greatest part of the load, and there is the risk of breakage.

Cables de Acero
Tie characteristics
Wire rope diameter No. of ties
on each side
of the cut		 Tie
length		 Distance
between ties		 Wire diameter
rec. iron piece to be
used (mm)
Up to 12 3 12 15 0,5 to 0,8
13 to 20 3 25 40 1 to 1,5
21 to 30 4 40 50 1,2 to 2,2
31 to 40 4 50 50 1,8 to 3
41 to 50 4 75 50 2,2 to 3,2

Recommended cuttings

To cut antitwisting wire ropes, we recommend cutting by electric resistance or by welding.

Cables de Acero

Calibration

For calibration, the measuring device must be properly used.

Cables de Acero

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