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NTN 81120 Bearing Details：

Bearing Name 81120 New Model 81120 Old Model 9120 bearing product Model 81120 Category Thrust Roller Bearings Brand NTN Bearing Inner Diameter d ( mm ) 100 Outer Diameter D ( mm ) 135 Thickness B ( mm ) 25

NTN 81120 Bearing   Bearing Size and Drawing：

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
INA 81120 Bearing	100	135	25	INA	Cylindrical Roller Bearings
STEYR 51120 Bearing	100	135	25	STEYR	Thrust Ball Bearings
TBS 81 120 TN Bearing	100	135	25	TBS	Thrust Roller Bearings
TBS 81120 Bearing	100	135	25	TBS	Thrust Roller Bearings
FAG 81120 Bearing	100	135	25	FAG	Thrust Roller Bearings
NSK 51120 Bearing	100	135	25	NSK	Thrust Ball Bearings
FAG 81120LPB Bearing	100	135	25	FAG	Cylindrical Roller Thrust Bearings
FAG 81120 LPB Bearing	100	135	25	FAG	Cylindrical Roller Thrust Bearings
INA 81120 Bearing	100	135	25	INA	Thrust Roller Bearings
TBS 81120 Bearing	100	135	25	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.