RUD "RBG" & "VRBG" Bolt-on Load Rings, Metric thread Options - Range from 3000kg to 50000kg

User Instructions

1. Reference should be made to German Standards accord.
BGR 500 or other country specific statutory regulations and inspections are to be carried out by competent persons only.

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

3. The material construction to which the lifting point will be attached should be of adequate strength to withstand forces during lifting without deformation. The German testing authority, BG, recommends the following minimum for the bolt lengths:
1 x M in steel (min. quality S235JR [1.0037])
1.25 x M in cast iron (e.g. GG25)
2 x M in aluminium
2.5 x M in aluminium-magnesium alloys
(M = thread Ø, e.g. M 20)

When lifting light metals, nonferrous metals and cast iron the thread has to be chosen in such a way that the WLL of the thread corresponds to the requirements of the corresponding base material.
RUD-VRBG/RBG are delivered with 100 % crack tested bolts.
Variable bolt length available when using DIN EN ISO 4014 (DIN 931) e.g DIN EN ISO 4762 (DIN 912) bolts. When using your own bolts they have to be 100% crack tested. You have to use at least a hexagon bolt according to ISO 4014 (DIN 931) with quality 10.9 (for RBG 3) or a hex head bolt accord. ISO 4762 (DIN 912) with quality 8.8 (for RBG 8) and quality 12.9 (for RBG 15 and VRBG 16) with the correct nom. diameter.

4. The lifting points must be positioned to the load in such a way that movements are 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 symmetrical around the centre of gravity in the same plane if possible.

5. Load symmetry:
The required WLL of the individual RUD lifting point are calculated using the following formula and are based on symmetrical loading:

The calculation of load bearing legs is as follows:

(See Tables below)

6. A plane bolting surface must be guaranteed. The holes must be drilled in the recommended tolerance field and with a sufficient depth in order to guarantee compatibility with the supporting surface.
Drilling sequence for the RBG 3:
a) Mark the blind hole (Dim F) then drill and countersink the dimensions H,G,K.
b) After fitting and and adjustment of the welding blocks the bore for the tapped hole can be drilled.
c) The core hole and thread can be machined. For through holes drill only the dimension ”H“.

7. The VRBG/RBG-Ring must be able to pivot 180° after assembly. For single use just tighten with spanner. For long term application the VRBG/RBG should be tightened with torque accord. chart 2 (+/-10%) inclusive using the locking washer.

VRBG 30t and 50t specific:

7. For single straight pull use just tighten with spanner. For long term application or using the lifting points under inclination angle conditions the tightening has to be done with the torque mentioned on the plate.
The permissible weight of load for the different loading methods has to be defined by the user (authorised and trained person) according to the WLL indication on the connecting plate and the factors mentioned in table 1.
With turning processes and in permanent operation, the bolts have to regularly be examined with regard to their torque prescribed (for turning processes, we recommend to use the RUD lifting point PowerPoint WBG-V or WBG).

8. To prevent unintended dismounting through shock loading, rotation or vibrations thread locking devices are recommended. Therefore different locking systems are possible. Liquid locking fluid such as Loctite (respect manufacturer specifications) or form closed versions such as hex castel nut, counter nut, etc.

9. All fittings connected to the VRBG/RBG 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.
10. Effects of temperature:
Due to the DIN/EN bolts that are used with the VRBG/RBG the working load limit should be reduced accordingly:
-40° to 100°C no reduction (-40°F to 212°F)
100° to 200°C minus 15% (212°F to 392°F)
200° to 250°C minus 20% (392°F to 482°F)
250° to 350°C minus 25% (482°F to 662°F)
Temperatures above 350°C (662°F) are not permitted.

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 be avoided, please contact the manufacturer indicating the concentration, period of penetration and temperature of use.

12. The position where the lifting points should be attached should be clearly marked with colour.

Inspection criteria concerning paragraphs 2 and 13:

• Ensure correct bolt size, quality and length
• Ensure compatibility of bolt thread and tapped hole
• The Lifting point should be complete
• Deformations of the components parts such as body fittings
• and thread
• Mechanical damages such as notches, especially in high
• stress areas.
• Wear should be not more than 10% of cross sectional
• diameter.
• Evidence of corrosion.
• Evidence of cracks.
• Damage to the bolt and/or thread.

A non-adherence to this advice may result in damage of persons and/or materials.

Technical Dimensions

Measurements are in mm unless otherwise stated.

RBG 3 VRBG 10 and 16
Model	WLL (tonnes)	Weight (kg)	A (mm)	B	C	D	E	F	G	H	J	K	L	M	N	T	Screw	Screw Thread Pitch (mm)	Torque	Reference
RBG 3	3	1.07	34	16	5	48	22	92	6	18	30	1	178	2 x m16	71	67	ISO 4014 (DIN 931) M16x50-10.9	2	120 Nm	0051817
VRBG 10	10	5.43	125	22	6	65	143	78	8	30	50	43	213	4 x m20	100	103	M20	2.5	-	7994537
VRBG 16	16	11.3	170	30	8	90	198	104	10	46	70	63	270	4 x m30	134	131	ISO 4762 (DIN 912) M30x90-12.9	3.5	600Nm	7993255
VRBG 30 VRBG 50
Model	WLL (tonnes)	Weight (kg)	A (mm)	B	C	D	E	F	G	H	J	K	L	M	N	T	Screw	Screw Thread Pitch (mm)	Torque	Reference
VRBG 31.5	31.5	67.5	400	180	120	30	75	130	42	42	-	-	46	-	-	265	-	-	900 Nm	7985866
VRBG 50	50	198	650	270	200	36	100	230	70	55	-	-	58	-	-	412	-	-	1000 Nm	7985867

Load Capacities

Method of lift
Number of legs	1	1	2	2	2	2	2	3 and 4	3 and 4	3 and 4
Angle of inclination <ß	0°	90°	0°	90°	0-45°	45-60°	unsymm.	0-45°	45-60°	unsymm.
Factor	1	1	2	2	1,4	1	1	2,1	1,5	1
Type	WLL in metric tonnes
RBG 3 t	3 t	3 t	6 t	6 t	4,2 t	3 t	3 t	6,3 t	4,5 t	3 t
VRBG 10 t	10 t	10 t	20 t	20 t	14,0 t	10 t	10 t	21,0 t	15 t	10 t
VRBG 16 t	16 t	16 t	32 t	32 t	22,4 t	16 t	16 t	33,6 t	24 t	16 t
VRBG 31,5 t	31,5 t	31,5 t	63 t	63 t	45 t	31,5 t	31,5 t	67 t	47,5 t	31,5 t
VRBG 50 t	50 t	50 t	100 t	100 t	70 t	50 t	50 t	105 t	75 t	50 t
Type	WLL in imperial lbs
RBG 3 t	6600 lbs	6600 lbs	13200 lbs	13200 lbs	9240 lbs	6600 lbs	6600 lbs	13860 lbs	9900 lbs	6600 lbs
VRBG 10 t	22000 lbs	22000 lbs	44000 lbs	44000 lbs	30800 lbs	22000 lbs	22000 lbs	46200 lbs	33000 lbs	22000 lbs
VRBG 16 t	35200 lbs	35200 lbs	70400 lbs	70400 lbs	49300 lbs	35200 lbs	35200 lbs	74000 lbs	52800 lbs	35200 lbs
VRBG 31,5 t	69445 lbs	69445 lbs	138891 lbs	138891 lbs	99208 lbs	69445 lbs	69445 lbs	147709 lbs	104719 lbs	69445 lbs
VRBG 50 t	110200 lbs	110200 lbs	220400 lbs	220400 lbs	154300 lbs	110200 lbs	110200 lbs	231400 lbs	165300 lbs	110200 lbs