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RUD RM Grade 8 Eye nuts (Non Swivel) - Range from 400kg to 32000kg

Model:  RUD RM / G8EN-53

RUD RM Grade 8 Eye Nuts (Non-Swivel), Imperial or Metric Thread
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Unit Price £ 37.36  
Part N°: 53-350615   Add to Quote Request

Grade 8 Eye nuts - RUD RM : M6 - M48.

RUD RM Grade 8 Eye nuts

RUD Lifting / Lashing Eyenut

With the following characteristics, distinctive in comparison to the conventional DIN - eye nuts;

  • An octagonal shape symbolising quality class 8
  • Colored red, the identification color of quality class 8
  • Identification : Clear WLL indication for the most unfavorable load direction F2 (not permissible for DIN 581).
  • Forged mateterial 1.6541, high tensile and annealed, 100% electromagnetic crack detected according to EN 1677-1 and with a 4 :1 design factor.
  • Loaded in the direction F1, an up to four times higher factor of the value F2 is acceptable. Always make sure that the eye nut is tight before loading.
  • Swiveling movements must be avoided during transportation.

Not suitable for swiveling under load.

It does not automatically adjust to the direction of pull hence not permitted in the mining industry.
For the RUD RM - eye nuts, the threaded connector component must be of at least quality grade 8.8. Without an additional washer, the seat - engaging surface (E) must evenly and completely lie onto the surface of the work piece.

Impact loaded or when operated in environments with vibrations, unintentional loosening can happen.

Securing possibilities: Use of a liquid thread securing medium eg. Loctite ( follow the manufacturer`s recomendations) or positive bolt securing.

Higher WLL than compared with DIN 582 eye nuts.

Forged, tempered and 100% crack detected. Fool-proof compared with common DIN eye nuts by:

  • Shape: Octagonal means quality class 8
  • Identification: Distinct indication of WLL for the most unfavourable case (lateral load - not allowed with DIN 582).
  • In order to guarantee the WLL, the thread connection must at least consist of quality 8.8.
  • Eyenut must be bolted tight during use.
  • Avoid twisting movements during transport.

Proof Testing

There is no requirement to Proof Test RUD Products, either Bolt or Weldable after Installation if the user instructions for welding are carried out correctly. The welding should be carried out by a suitably qualified and competent welder/person.

The supporting structure, or the load, should be of adequate strength to take the stresses involved and this is the responsibility of the engineering designer or equivalent.

RUD Lifting and Lashing Products are Manufactured and conform to EN 1677. No further Proof Testing in the field is required. In fact it would be considered that the Product had been overloaded if a Load more than the recommended Working Load Limit had been applied.

RUD products should be regularly inspected in line with the requirements of LOLER and as per our user instructions at intervals decided by a competent person.

Load Chart

A non-adherence to this advice may result damages of persons and materials!

Table 1

Method of Lift Load Method 1 Load Method 2 Load Method 3 Load Method 4 Load Method 5 Load Method 6 Load Method 7 Load Method 8
Number of Legs 1 1 2 2 2 2 2 3 and 4 3 and 4 3 and 4
Angle of Inclination < ß 90° 90° 0-45° 45-60° unsymmetrical 0-45° 45-60° unsymmetrical
Metric type RUD Eyenut - WLL in metric tonnes, Bolted
RM-M6 400kg 100kg 800kg

For These kind of lifting purposes we recommend lifting point which can be adjusted to direction of pull.

RM-M8 800kg 200kg 1.6 t
RM-M10 1t 250kg 2t
RM-M12 1.6t 400kg 3.2t
RM-M16 3.2t 800kg 6.4t
RM-M20 6t 1.5t 12t
RM-M24 8t 2t 16t
RM-M30 12t 3t 24t
RM-M36 16t 4t 32t
RM-M42 24t 6t 48t
RM-M48 32t 8t 64t

Thread and Capacity options

Table 2 - Metric Measurements

Drawing
Model Thread Thread Pitch (mm) WLL Weight (kg) A (mm) B (mm) C (mm) D (mm) E (mm) F (mm) T (mm) Ref No.
Rud RM Eye-nut Dimensional Drawing RM-M 6 ISO Metric 1 100kg 0.1kg 12 11 10 25 25 6 34 55254
RM-M 8 ISO Metric 1.25 200kg 0.1kg 12 11 10 25 25 8 34 55255
RM-M 10 ISO Metric 1.5 250kg 0.1kg 12 11 10 25 25 10 34 55258
RM-M 12 ISO Metric 1.75 400kg 0.2kg 14 13 12 30 30 12 41 55271
RM-M 14 ISO Metric 2 750kg 0.3kg 16 15 14 35 35 14 48 55281
RM-M 16 ISO Metric 2 800kg 0.3kg 16 15 14 35 35 16 48 55460
RM-M 18 ISO Metric 2.5 1200kg 0.4kg 18 17 16 40 40 18 55 55342
RM-M 20 ISO Metric 2.5 1500kg 0.35kg 18 17 16 40 40 20 55 55343
RM-M 22 ISO Metric 2.5 1500kg 0.65kg 22 21 20 50 50 22 70 55387
RM-M 24 ISO Metric 3 2000kg 0.6kg 22 21 20 50 50 24 70 55394
RM-M 27 ISO Metric 3 2000kg 1.4kg 28 26 24 60 60 27 85 55399
RM-M 30 ISO Metric 3.5 3000kg 1.3kg 28 26 24 60 60 30 85 55438
RM-M 36 ISO Metric 4 4000kg 5.5kg 40 43 38 90 100 36 130 53093
RM-M 42 ISO Metric 4.5 6000kg 5.4kg 40 43 38 90 100 42 130 53095
RM-M 48 ISO Metric 5 8000kg 5.3kg 40 43 38 90 100 48 130 53098
RM- 3/8“-16UNC Imperial UNC - 200kg 0.1kg 12 11 10 25 25 3/8“ 34 7101103
RM- 1/2“-13UNC Imperial UNC - 350kg 0.2kg 14 13 12 30 30 1/2“ 41 7101104
RM- 5/8“-11UNC Imperial UNC - 750kg 0.2kg 16 15 14 35 35 5/8“ 48 7101105
RM- 3/4“-10UNC Imperial UNC - 1200kg 0.45kg 18 17 16 40 40 3/4“ 55 7101106
RM- 7/8“-9UNC Imperial UNC - 1500kg 0.7kg 22 21 20 50 50 7/8“ 70 7101107
RM- 1“-8UNC Imperial UNC - 2000kg 1.5kg 28 26 24 60 60 1“ 85 7101108

Table 3 - Imperial Measurements

Drawing
Model Thread WLL
(lbs)
Weight
(lbs)
A
(in.)
B
(in.)
C
(in.)
D
(in.)
E
(in.)
F
(in.)
T
(in.)
Ref
No.
Rud RM Eye-nut Dimensional Drawing RM-M 6 ISO Metric 220 0,22 15/32“ 7/16“ 25/64“ 1“ 1“ M6 1 11/32“ 55254
RM-M 8 ISO Metric 440 0,22 15/32“ 7/16“ 25/64“ 1“ 1“ M8 1 11/32“ 55255
RM-M 10 ISO Metric 550 0,22 15/32“ 7/16“ 25/64“ 1“ 1“ M10 1 11/32“ 55258
RM-M 12 ISO Metric 880 0.44 9/16“ 1/2“ 15/32“ 1 3/16“ 1 3/16“ M12 1 5/8“ 55271
RM-M 14 ISO Metric 1650 0,66 5/8“ 19/32“ 9/16“ 1 3/8“ 1 3/8“ M14 1 7/8“ 55281
RM-M 16 ISO Metric 1760 0,66 5/8“ 19/32“ 9/16“ 1 3/8“ 1 3/8“ M16 1 7/8“ 55460
RM-M 18 ISO Metric 2640 0,88 23/32“ 43/64“ 5/8“ 1 9/16“ 1 9/16“ M18 2 5/32“ 55342
RM-M 20 ISO Metric 3300 0,77 23/32“ 43/64“ 5/8“ 1 9/16“ 1 9/16“ M20 2 5/32“ 55343
RM-M 22 ISO Metric 3300 1,4 7/8“ 13/16“ 25/32“ 1 31/32“ 1 31/32“ M22 2 3/4“ 55387
RM-M 24 ISO Metric 4400 1,35 7/8“ 13/16“ 25/32“ 1 31/32“ 1 31/32“ M24 2 3/4“ 55394
RM-M 27 ISO Metric 4400 3,0 1 1/8“ 1“ 15/16“ 2 3/8“ 2 3/8“ M27 3 11/32“ 55399
RM-M 30 ISO Metric 6600 2,8 1 1/8“ 1“ 15/16“ 2 3/8“ 2 3/8“ M30 3 11/32“ 55438
RM-M 36 ISO Metric 8800 12 1 9/16“ 1 11/16“ 1 1/2“ 3 1/2“ 3 15/16“ M36 5 1/8“ 53093
RM-M 42 ISO Metric 13200 11,9 1 9/16“ 1 11/16“ 1 1/2“ 3 1/2“ 3 15/16“ M42 5 1/8“ 53095
RM-M 48 ISO Metric 17600 11,7 1 9/16“ 1 11/16“ 1 1/2“ 3 1/2“ 3 15/16“ M48 5 1/8“ 53098
RM- 3/8“-16UNC Imperial UNC 440 0,22 15/32“ 7/16“ 25/64“ 1“ 1“ 3/8“ 1 11/32“ 7101103
RM- 1/2“-13UNC Imperial UNC 770 0,44 9/16“ 1/2“ 15/32“ 1 3/16“ 1 3/16“ 1/2“ 1 5/8“ 7101104
RM- 5/8“-11UNC Imperial UNC 1650 0,66 5/8“ 19/32“ 9/16“ 1 3/8“ 1 3/8“ 5/8“ 1 7/8“ 7101105
RM- 3/4“-10UNC Imperial UNC 2640 1,0 23/32“ 43/64“ 5/8“ 1 9/16“ 1 9/16“ 3/4“ 2 5/32“ 7101106
RM- 7/8“-9UNC Imperial UNC 3300 1,5 7/8“ 13/16“ 25/32“ 1 31/32“ 1 31/32“ 7/8“ 2 3/4“ 7101107
RM- 1“-8UNC Imperial UNC 4400 3,3 1 1/8“ 1“ 15/16“ 2 3/8“ 2 3/8“ 1“ 3 11/32“ 7101108

User instructions

1. Reference should be made to European standards and other statutory regulations and inspections are to be carried out by competent persons only.

2. Before installing and every use, inspect visually RUD lifting points, paying particular attention to any evidence of corrosion, wear and weld cracks and deformations. Please ensure compatibility of bolt thread and tapped hole.

3. RUD eyenuts are only be used with bolts or threaded studs with a min. quality class 8.8. Non certified bolts or threaded studs are not allowed.

4. The lifting points must be positioned on the load in such a way that movement is avoided during lifting.

a.) For single leg lifts, the lifting point should be vertically above the centre of gravity of the load.
b.) For two leg lifts, the lifting points must be equidistant to/or above the centre of gravity of the load.
c.) For three and four leg lifts, the lifting points should be arranged symmetrically around the centre of gravity in the same plane.

5. Load Symmetry:
The working load limit of individual RUD lifting points are calculated using the following formula and are based on symmetrical loading:

WLL =
       G       
n x cos ß
WLL = Working Load Limit
G = Load Weight (kg)
n = Number of load bearing legs
ß = Angle of inclination of the chain to the vertical

The calculation of load bearing legs is as follows:

No. Legs Symmectrical Asymmetrical
Two Leg 2 1
Three / Four Leg 3 2

(See Table 1 and 3 below)

6. A plane bolting surface must be guaranteed. The internal thread has to be 100% engaged on the bolt thread. The treaded stud must guarantee that the plane area of the eyenut can completely flat down to the work piece.
When using the eyenut perpendicular only, the WLL from table no. 1 can be used.

7. Rotation during the transportation must be avoided.

8. All fittings connected to the eyenut should be free moving.

When connecting and disconnecting the lifting means (sling chain) pinches and impacts should be avoided. Damage of the lifting means caused by sharp edges should be avoided as well.

9. To prevent unintended dismounting through shock loading, rotation or vibration, thread locking fluid such as Loctite (depending on the application, please pay attention to the manufacturer's instruction) could be used to secure the bolt, or use form-closed devices.

10. Effects of temperature:
If the RUD-Eyenuts are to be used in temperatures ranging from 200°C upwards, the WLL has to be reduced accordingly:
-40° up to 200°C  = no reduction
200° up to 300°C = minus 10% (392°F up to 572°F)
300° up to 400°C = minus 25% (572°F up to 752°F)
Temperatures above 400°C (752°F) are not permitted. Please pay attention to the max. temperatureareas for the bolts and threaded studs.

11. RUD-Lifting points must not be used under chemical influences such as acids, alkaline solutions and vapours e.g. in pickling baths or hot dip galvanising plants. If this cannot avoided, please contact the manufacturer indicating the concentration, period of penetration and temperature of use.

12. The places where the lifting points are fixed should be marked with colour.

13. After fitting, an annual inspection or sooner if conditions dictate should be under taken by a competent person examining the continued suitability. Also after damage and special occurrences.

Inspection criteria concerning paragraphs 2 and 13:

  • Ensure tightness
  • Ensure correct bolt (treaded stud) size, quality and length
  • The plane area of the eyenut must properly flat down on the work piece.
  • The lifting point should be complete.
  • The working load limit and manufacturers stamp should be clearly visible.
  • Deformation of the component parts such as body, load ring and threaded stud
  • Mechanical damage, such as notches, particularly in high stress areas.
  • Wear should be no more than 10% of cross sectional diameter.
  • Evidence of corrosion.
  • Evidence of cracks.
  • Damage to the bolt, nut and/or thread.

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