KOYO Rolamentos esféricos de rolamentos

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Spherical roller bearings are available as double-row, combination radial and thrust bearings. They use a spherical or crowned roller as the rolling element. The race in the outer ring is spherical in shape, which allows for some misalignment of the shaft and the housing. Spherical roller bearings are unequalled in their capacity for high loads and their tolerance to shock loads, but have limited speed capabilities. They perform consistently, even under extreme conditions, such as application-specific stress and marginal lubrication. The cage of a spherical roller bearing provides high dimensional accuracy and functionality. According to some estimates, spherical roller bearings have twice the running life of conventional bearings.

Most spherical roller bearings are made of alloy steels or low-carbon steels. Chrome-plated products are also available. Some applications require the use of case-hardened or through-hardened, high-carbon, bearing-quality steel. High-carbon grades of steel do not require carburizing and can be case-hardened by induction heating or through-hardened by conventional heating methods. When low-carbon, carburized grades of steel are used, carbon is introduced after the spherical roller bearings are machined to a depth sufficient to produce a hardened case that can sustain bearing loads. The addition of carbon and alloys ensures the proper combination of a hard, fatigue-resistant case and a tough, ductile core.

Bore size and outside diameter (OD) are important specifications to consider when selecting spherical roller bearings. The bore size is the bearing's smallest dimension. The outer diameter includes the bearing housing, but excludes the flange. Other important specifications for spherical roller bearings include overall width, rated speed (oil), static axial load, static radial load, dynamic axial load, and dynamic radial load. Static axial and static radial loads are, respectively, the maximum axial and radial loads that bearings can withstand without permanent deformation. Dynamic axial and dynamic radial loads are, respectively, the calculated axial and radial loads under which a group of identical bearings with stationary outer rings can endure for a rating life of 1 million revolutions of the inner ring.

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Bearing Number	Bore Dia	Outer DIa	Width	Size
190 mm x 340 mm x 120 mm KOYO 23238RHAK Rolamentos esféricos de rolamentos	SKF	21	190 mm x 340 mm x 120 mm	0.3 mm
360 mm x 600 mm x 243 mm KOYO 24172R Rolamentos esféricos de rolamentos	INA	37	37 mm	No
300 mm x 540 mm x 140 mm KOYO 22260RK Rolamentos esféricos de rolamentos	40	58	0,122 Kg	NBS
530 mm x 780 mm x 250 mm KOYO 240/530R Rolamentos esféricos de rolamentos	165,1 mm	530 mm x 780 mm x 250 mm	SIGMA	279,4 mm
400 mm x 720 mm x 256 mm KOYO 23280RK Rolamentos esféricos de rolamentos	NK 85/35	Machined Bearing wit	85	200 kN
220 mm x 370 mm x 120 mm KOYO 23144RHAK Rolamentos esféricos de rolamentos	35 mm	NBS	47 mm	30
110 mm x 240 mm x 50 mm KOYO 21322RH Rolamentos esféricos de rolamentos	Roller Assembly with	Yes	0,8 mm	N/A
160 mm x 240 mm x 80 mm KOYO 24032RHK30 Rolamentos esféricos de rolamentos	234.2 mm	0.2	241 mm	1120 kN
140 mm x 250 mm x 88 mm KOYO 23228RH Rolamentos esféricos de rolamentos	8.6 mm	Roller Bearings	0.0	55
280 mm x 420 mm x 106 mm KOYO 23056RK Rolamentos esféricos de rolamentos	4T-560/552	38,1	66,675	123,825
240 mm x 360 mm x 92 mm KOYO 23048RHAK Rolamentos esféricos de rolamentos	680,000 mm	680,000	240 mm x 360 mm x 92 mm	37,000
200 mm x 280 mm x 60 mm KOYO 23940R Rolamentos esféricos de rolamentos	200 mm x 280 mm x 60 mm	CYSD	124 kN	24 mm