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NTN 81228 Bearing Details：

Bearing Name 81228 New Model 81228 Old Model 9228 bearing product Model 81228 Category Thrust Roller Bearings Brand NTN Bearing Inner Diameter d ( mm ) 140 Outer Diameter D ( mm ) 200 Thickness B ( mm ) 46

NTN 81228 Bearing   Bearing Size and Drawing：

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
KOYO 51228 Bearing	140	200	46	KOYO	Thrust Ball Bearings
SNR 51228 Bearing	140	200	46	SNR	Thrust Ball Bearings
FAG 51228 Bearing	140	200	46	FAG	Thrust Ball Bearings
NACHI 51228 Bearing	140	200	46	NACHI	Thrust Ball Bearings
INA 81228 Bearing	140	200	46	INA	Thrust Roller Bearings
NSK 51228 Bearing	140	200	46	NSK	Thrust Ball Bearings
STEYR 51228 Bearing	140	200	46	STEYR	Thrust Ball Bearings
FAG 51228 Bearing	140	200	46	FAG	Thrust Ball Bearings
STEYR 51228 Bearing	140	200	46	STEYR	Thrust Ball Bearings
NSK 51228 Bearing	140	200	46	NSK	Thrust Ball Bearings

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Thrust roller bearings (including thrust cylindrical roller, thrust tapered roller, and thrust self-aligning roller bearings) mainly consist of a shaft ring, a housing ring, rollers, and a cage.
They employ a line contact design and offer advantages such as extremely high axial load capacity, good rigidity, impact resistance, and the ability to withstand certain radial loads (thrust tapered roller bearings) or possess self-aligning functionality (thrust self-aligning roller bearings). Compared to thrust ball bearings, their axial load capacity and impact resistance are significantly stronger. Compared to thrust cylindrical roller bearings, thrust tapered roller bearings can withstand additional radial loads, while thrust self-aligning roller bearings can compensate for alignment errors, making them suitable for heavy-duty applications requiring higher load capacity, rigidity, and adaptability to operating conditions. These bearings are primarily used in heavy-load, low-speed, or medium-speed applications requiring the withstand of enormous axial thrust. Typical applications include ship propeller thrust shafts, large vertical turbine main shafts, heavy-duty crane slewing mechanisms, oil drilling rig rotary tables, rolling mill pressing mechanisms, large gearboxes, and hydraulic presses.