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
400 mm x 600 mm x 200 mm KOYO 24080RHAK30 Rolamentos esféricos de rolamentos	7,142 mm	175,3 mm	182,5	101,6 mm
320 mm x 580 mm x 150 mm KOYO 22264R Rolamentos esféricos de rolamentos	TP1831	2	31 mm	34,4 kN
140 mm x 250 mm x 68 mm KOYO 22228RHRK Rolamentos esféricos de rolamentos	240 mm	4 mm	5 mm	1 030 r/min
460 mm x 680 mm x 218 mm KOYO 24092RK30 Rolamentos esféricos de rolamentos	3450 kN	289 mm	4 mm	2040 kN
190 mm x 260 mm x 52 mm KOYO 23938R Rolamentos esféricos de rolamentos	0.006 kN	100000 r/min	0.15 mm	0.002 kg
95 mm x 200 mm x 45 mm KOYO 21319RH Rolamentos esféricos de rolamentos	200	172 mm	25	25 mm
120 mm x 200 mm x 62 mm KOYO 23124RH Rolamentos esféricos de rolamentos	51 mm	1,08	3,2 mm	30,886 mm
180 mm x 320 mm x 112 mm KOYO 23236RHA Rolamentos esféricos de rolamentos	NF224	215	ISO	120 mm
380 mm x 560 mm x 135 mm KOYO 23076RK Rolamentos esféricos de rolamentos	8482.10.50.28	40	31171531	40 mm
60 mm x 130 mm x 46 mm KOYO 22312RHRK Rolamentos esféricos de rolamentos	500	414,6 kN	1683 r/min	6256 M