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INA 81218 Bearing Details：

Bearing Name 81218 New Model 81218 Old Model 9218 bearing product Model 81218 Category Thrust Roller Bearings Brand INA Bearing Inner Diameter d ( mm ) 90 Outer Diameter D ( mm ) 135 Thickness B ( mm ) 35

INA 81218 Bearing   Bearing Size and Drawing：

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
FAG 51218 Bearing	90	135	35	FAG	Thrust Ball Bearings
TBS 81218 Bearing	90	135	35	TBS	Thrust Roller Bearings
INA 81218 Bearing	90	135	35	INA	Thrust Roller Bearings
TBS 81218 Bearing	90	135	35	TBS	Thrust Roller Bearings
TBS 51218 Bearing	90	135	35	TBS	Thrust Ball Bearings
TBS 51218 Bearing	90	135	35	TBS	Thrust Ball Bearings
NACHI 51218 Bearing	90	135	35	NACHI	Thrust Ball Bearings
STEYR 51218 Bearing	90	135	35	STEYR	Thrust Ball Bearings
NTN 51218 Bearing	90	135	35	NTN	Thrust Ball Bearings
TBS 81218TN Bearing	90	135	35	TBS	Thrust Roller 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.