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TimkenL630310-3Tapered Roller Bearing Cup 7-9/16 in Outside Diameter Inch Series Class 3 Precision Cup Only

Condition: New – Open box
Condition Note: Made In USA, Super Precision Class 3

Availability:

1 in stock

Tapered roller bearing cup, 7-9/16 in outside diameter, inch series, Class 3 precision. Cup only. 1 Pc.

List Price

$206.52

1 in stock

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Specifications

Key Specifications

MFR / BrandTimken
MPNL630310-3
ModelL-630310 3
Bearing TypeTapered Roller Bearing Cup
OD7.5625 in
Width0.7480 in

Technical Specifications

Base NumberL630310
Industry TermsTaper roller cup; tapered roller bearing outer race; bearing race; Class 3 taper cup; inch series taper bearing
Common MisspellingsL630310 3; L-630310-3; Timkin L630310-3; L63031O-3
Application TypesLarge gearbox and pinion shafts; industrial trunnions; heavy axles; rolling mill and machine tool arrangements requiring Class 3 accuracy
Mpn VariantsL630310-3; L630310*3; L630310#3; L 630310 *3; L630310
Compatible With ReplacesMating cone: Timken L630349 (6 in bore), sold separately
Number Of Rows1
Part NumberL630310-3
Seller Part Number: K3#HJGFJB

Product Description

What this part is

A tapered roller bearing cup in the Timken inch series: the outer race only, without rollers. Outside diameter 7-9/16 in (7.5625 in, 192.088 mm).

Decoding the designation

L630310 — the cup number in the L630349/L630310 pairing.
-3, also written *3 or #3 — Timken precision Class 3, a tighter tolerance grade than standard.

Quantity and configuration

1 Pc. Cup only, no rollers. The matching cone is the Timken L630349, which has a 6 in bore.

What these specs mean in practice

The cup is the outer race of a separable tapered roller bearing; the cone half carries the inner raceway, the rollers and the cage. The raceway angle and roller path are matched between the two halves of a published pairing, which is what makes the cup and cone numbers a set. Class 3 tightens the bore, outside diameter and raceway running tolerances relative to a standard cup, which reduces runout in the assembled bearing and makes the setting of endplay more repeatable across a batch.

Fitting notes

The cup seats in the housing bore, normally to an interference or line fit, and it is pressed square against the shoulder before endplay is set. Assembled width across the L630349/L630310 pairing is 0.9843 in.

Interchange guidance

This is the cup half of the Timken L630349/L630310 pairing. A standard-precision L630310 without the Class 3 suffix is the same envelope at a looser tolerance grade, so it is a related size rather than an interchange where the Class 3 grade is required.

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