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NTN 81103 Bearing Details：

Bearing Name 81103 New Model 81103 Old Model 9103 bearing product Model 81103 Category Thrust Roller Bearings Brand NTN Bearing Inner Diameter d ( mm ) 17 Outer Diameter D ( mm ) 30 Thickness B ( mm ) 9

NTN 81103 Bearing   Bearing Size and Drawing：

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
FAG 81103 LPB Bearing	17	30	9	FAG	Cylindrical Roller Thrust Bearings
NACHI 51103 Bearing	17	30	9	NACHI	Thrust Ball Bearings
INA 81103 Bearing	17	30	9	INA	Cylindrical Roller Bearings
TBS 81103 Bearing	17	30	9	TBS	Thrust Roller Bearings
NTN 81103 Bearing	17	30	9	NTN	Thrust Roller Bearings
NSK 51103 Bearing	17	30	9	NSK	Thrust Ball Bearings
RHP 51103 Bearing	17	30	9	RHP	Thrust Ball Bearings
INA 81103TN Bearing	17	30	9	INA	Cylindrical Roller Thrust Bearings
SNR 51103 Bearing	17	30	9	SNR	Thrust Ball Bearings
NSK 51103 Bearing	17	30	9	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.