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NTN 81220 Bearing Details：

Bearing Name 81220 New Model 81220 Old Model 9220 bearing product Model 81220 Category Thrust Roller Bearings Brand NTN Bearing Inner Diameter d ( mm ) 100 Outer Diameter D ( mm ) 150 Thickness B ( mm ) 38

NTN 81220 Bearing   Bearing Size and Drawing：

Model	Inner Diameter d(mm)	Outer Diameter D(mm)	thickness B(mm)	Brand	Type
NACHI 51220 Bearing	100	150	38	NACHI	Thrust Ball Bearings
NTN 81220 Bearing	100	150	38	NTN	Thrust Roller Bearings
NTN 81220 Bearing	100	150	38	NTN	Thrust Roller Bearings
INA 81220 Bearing	100	150	38	INA	Cylindrical Roller Bearings
SNR 51220 Bearing	100	150	38	SNR	Thrust Ball Bearings
TBS 81220 TN Bearing	100	150	38	TBS	Thrust Roller Bearings
STEYR 51220 Bearing	100	150	38	STEYR	Thrust Ball Bearings
FAG 81220LPB Bearing	100	150	38	FAG	Cylindrical Roller Thrust Bearings
TBS 81220 Bearing	100	150	38	TBS	Thrust Roller Bearings
INA 81220TN Bearing	100	150	38	INA	Cylindrical Roller Thrust 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.