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INAAxial Cylindrical Roller Thrust Bearing – 2-5/8 in Bore, 4-11/32 in OD, 1 in Overall Height, Inch Series

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3 in stock

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Axial cylindrical roller thrust bearing, 2-5/8 in bore x 4-11/32 in OD x 1 in overall height, inch series, open, pure thrust load in one direction. 1 Pc.

List Price

$121.42

3 in stock

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Specifications

Key Specifications

MFR / BrandINA
GTIN035373112241
ModelRT-622

Technical Specifications

Base NumberRT622
Industry Termsthrust bearing, axial bearing, cylindrical roller thrust bearing, roller thrust washer bearing, axial cylindrical roller bearing, inch series thrust bearing
Common MisspellingsINA RT-662, RT662, INA RT 6 22, RTG22, RT62 2
Application TypesVertical shaft thrust positions, gearbox thrust faces, screw jacks, turntables, press and machine tool thrust locations
Bore Shaft Size2-5/8 in (2.625 in / 66.68 mm)
Mpn VariantsRT622, RT-622, RT 622, INARLT622, RT622 INA
Bearing TypeAxial cylindrical roller bearing (cylindrical roller thrust bearing)
Number Of Rows1
Bore TypeStraight, clearance fit
Harmonization Code8482.50.00
Part NumberRT622
Seller Part Number: B-BP3#T3AOJ3

Product Description

What this part is

An INA RT622 axial cylindrical roller bearing — a thrust bearing, not a radial one. It measures 2-5/8 in bore by 4-11/32 in outside diameter by 1 in overall stack height, in INA’s inch RT series. The rolling elements are cylindrical rollers laid radially in a flat plane between two flat raceway washers, so the bearing carries load along the shaft axis and takes no radial load at all.

Configuration of the RT series

An RT-series axial bearing is a stack of three elements: a shaft washer, a housing washer, and a cylindrical roller and cage assembly running between them. The washers are flat, hardened and ground on their raceway faces and have no lips or ribs. The 1 in figure is the assembled height of the complete stack, and the 2-5/8 in bore figure is the washer bore, which clears the shaft rather than gripping it.

What these specs mean in practice

Cylindrical roller thrust bearings carry very high axial load in a short axial length, well above a ball thrust bearing of the same envelope, because line contact replaces point contact. The trade is speed: the rollers scrub against the flat raceways at a velocity that varies across their length, so limiting speed is low and continuous oil supply matters. Thrust is taken in one direction only, and a second bearing or a shoulder handles the return load. Radial location comes from a separate radial bearing, never from this one.

Quantity and configuration

1 Pc. One RT622 axial bearing, in inch dimensions rather than metric. The metric construction is INA’s 811-series, where the pieces carry separate numbers — K811.. for the roller and cage set, WS811.. for the shaft washer, GS811.. for the housing washer.

Mounting data

Washer bore fit: clearance fit on the shaft. Washer orientation: both washers run square to the shaft axis, and the squareness of the housing and shaft shoulders governs whether all the rollers share the load. Minimum load: a minimum axial load is required to keep the roller set from skidding.

Interchange guidance

Torrington and Timken carried the same inch RT numbering for axial cylindrical roller bearings. The number 5916267 is a distributor and OEM stock number for the same part. Metric 811-series and 812-series axial bearings cover different bore and height combinations and are different sizes, as are the AXK needle-roller axial cages, which use needles instead of cylindrical rollers and have a lower rating.

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