Special Customized Bearings

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Product Parameter

Backup Rollers

Back-up rollers for tension levelers and metal flattening machines are made in two different styles:

– with full complement of cylindrical rollers

– with roller cages in mould steel or brass.

The full complement style allows the bearing to reach a high load capacity both dynamic and static.

The roller cage style (made of two or more cages), along with the wide working surface, allow for increased flattening performance and high speed. The distance rings on the outer ring and the pivot, plus the circle clearance, which is calculated at the minimum, allow a good support of axial loads. The style with roller cages represents the most advanced series of back-up rollers.

This series of backup rollers is usually manufactured with two lateral thrust bearings in the inner body, either with balls or rollers, which guarantee a very strong support of axial loads.

The backup rolls have a grease lubrication system and are already pre-lubricated. The lubrication system foresees both the entrance and the exit of grease. They can be supplied also in Long-life execution. The sealing system is very efficient, it doesn’t allow any outer agents such as, dust, mill scale, humidity to enter the back-up roll, at the same time, it prevents the leakage of grease.
Precision class is P0, on request the backup rollers can be manufactured with precision class P6 or P5. Special designs can be produced on requests.

Forming Roller Bearings

The forming roller bearing is a kind of yoke type track roller which used for spiral pipe mills, the internal design is simiar to NUTR type yoke type track roller bearings.

Type	d	D	B	C	Mass
Type	(mm)				(g)
NUTR2552H	25	52	25	24	281
NUTR2580H	25	80	47	45	300
NUTR3062H	30	62	29	28	1500
NUTR3085H/46	30	85	46	44	500
NUTR3085H/50	30	85	50	48	1600
NUTR3090/40	30	90	40	39	1950
NUTR3090/55	30	90	55	53	2200
NUTR3090/58	30	90	58	57	2310
NUTR4080H	40	80	32	30	816
NUTR4085H	40	85	46	45	1300
NUTR40110H/32	40	110	32	32	2070
NUTR40110H/54	40	110	54	53	3000
NUTR40110H/58	40	110	58	56	3375
NUTR45100H	45	100	32	30	1396
NUTR50110H	50	110	32	30	1690
NUTR50130H	50	130	65	63	5500
NUTR50150H	50	150	55	53	6500
NUTR65150H	65	150	54	52	5400
NUTR55160H	55	160	100	98	12500
NUTR60200H	60	200	95	93	19500
NUTR130250H	130	250	106	104	27800

Mainly used types for spiral pipe mills are: Forming roller NUTR65150, NUTR50110, NUTR4085, NUTR3085

Also we can design and produce as the drawing or sample of customers.

Overhead Conveyor Bearings

Overhead Conveyor bearings are designed for use in overhead conveyor systems. They are constructed using fully machined raceways made from case hardened steels. Bearings can be supplied with either caged or full complement ball arrangement.

Sealed and shielded bearings are normally greased for life. Open types are not normally greased. Other Lubricants are available on request.

* Sealed for bearing life.

Finish:

Self Colour or Blacked.

Overhead Conveyor Bearings

Spring Bush Bearings

Spring bush bearings are made of coiled spring strip steel, which are assembled with inner race and outer race with flexible or solid roller cage.
The complete bearing is thus made up of three separate units. The fact that the inner race can be mounted on the shaft and the outer race fitted in the housing separately.
Spring bush bearings are used where there is a heavy shock load and the surrounding temperature is more than 200°C.
These bearings are used where there is space restriction.

BR Roller Spring Bush Bearings

Spring Bush Bearings

Spring bush bearings are mainly used for continuous casting machines. The flexible bushes made of wound strip steel are used particularly as inner and outer bushes/races. The mounting of them can be executed easily. They have a less wall thickness than a solid bush.

Flexible bushes fit on the shaft and/or in the bore due their defined pre-tension. Under temperature the bushes grow with their surrounding construction.

It will not be necessary to grind the shafts or the bores.

Flexible bushes must not be forced axially.

Type of product	Code	Dimensions	Weight(kg)	Cor(KN)	Cr(KN)
br	8132e	35/60 mm x 64/38 mm	0.6	115	82
br	2671e	35/62 mm x 50/36 mm	0.6	90	65
br	2436e	35/65 mm x 56,5/38 mm	0.65	95	50
br	2955e	35/65 mm x 64/38 mm	0.7	100	85
br	11386e	40/68 mm x 58/45 mm	0.9	160	101
br	10144e	40/71 mm x 60/45 mm	0.9	145	110
br	10772e	45/67 mm x 50/40 mm	0.6	130	80
br	10063e	45/67 mm x 73/63 mm	0.8	240	130
br	10145e	45/75 mm x 86/70 mm	1.3	260	175
br	10541e	50/80 mm x 75/70 mm	1.5	350	215
br	11941e	50/85 mm x 57/45 mm	1.4	153	108
br	8679e	50/85 mm x 73/45 mm	1.5	183	140
br	3110e	50/95 mm x 95/70 mm	2.1	285	215
br	11181e	55/80 mm x 73/63 mm	1.2	275	140
br	6204e	55/90 mm x 73/63 mm	2	320	185
br	8466e	60/89 mm x 73/63 mm	1.6	365	175
br	8065e	60/89 mm x 73/63 mm	1.6	345	160
br	6205e	60/95 mm x 73/63 mm	2	365	200
br	5522e	60/110 mm x 105/94 mm	3.4	515	340
br	9138e	62/89 mm x 73/63 mm	1.5	350	190
br	8511e	70/99 mm x 73/63 mm	1.7	390	180
br	2675e	70/120 mm x 71,5/50 mm	3	315	205
br	11189e	75/104 mm x 73/63 mm	1.8	393	188
br	11397e	75/105 mm x 73/63 mm	3	431	200
br	11190e	90/121 mm x 73/63 mm	2.4	538	250

ABC Roller Spring Bush Bearings

Figure of an ABC bearing with snap cage. The bearing is consisting of the said cage and flexible bushes.

Heat stabilized up to 350°C.
General operation environments are continuous casting machines.
Particular resistivity against negative effects that may emerge by high temperature, high loads, lack of greasing, intruding media like as tinder, water, casting powder.
Compared with the standard Flexible Bush Bearing, BR-type, the ABC Bearing is suited better to take axial trusts that may arise in the strand-guiding roll.

Type of product	Code	Dimensions	Weight(kg)	Cor(KN)	Cr(KN)
abc	10456e	45/80 mm x 80/70 mm	2.1	327	205
abc	11588e	50/80 mm x 75/70 mm	1.6	332	189
abc	10455e	50/85 mm x 80/70 mm	2.2	375	220
abc	8227e	50/95 mm x 85/50 mm	2	320	205
abc	7565e	50/95 mm x 85/50 mm	3	320	205
abc	11166e	55/85 mm x 75/70 mm	1.8	380	215
abc	11167e	60/95 mm x 75/70 mm	2.4	432	230
abc	10203e	60/89 mm x 73/63 mm	1.6	400	195
abc	8545e	65/105 mm x 90/64 mm	2.2	390	245
abc	11590e	65/95 mm x 75/70 mm	2	410	208
abc	11259e	75/105 mm 75/70 mm	2.7	520	255
abc	10227e	75/104 mm x 73/63 mm	1.9	440	203
abc	10236e	80/120 mm x 73/63 mm	3	530	265
abc	8546e	85/125 mm x 90/64 mm	2.7	530	295
abc	10317e	90/121 mm x 73/63 mm	2.6	520	240
abc	10389e	90/121 mm x 73/63 mm	2.4	528	247