Timken41286-3Tapered Roller Bearing Cup – 2.8593 in Outside Diameter, 0.6875 in Width, Class 3 Precision

Product Description

What this part is

Timken 41286-3 inch tapered roller bearing cup. Bearing Type: Tapered roller bearing cup — the outer race of a single-row tapered roller bearing. Series: 412. Base Number: 41286. Outside Diameter: 2.8593 in (72.626 mm). Overall Width: 0.6875 in (17.463 mm). Rolling Elements: Tapered Roller. Number Of Rows: 1. Item Weight: 0.5 kg (1 lb).

Decoding the designation

41286 — Timken base cup number in the 412 inch series, 2.8593 in outside diameter, unflanged.

*3 — Timken Precision Class 3. Tighter running and mounting tolerance than standard class, giving lower running vibration and closer location in the housing bore. The same class is written 41286-3, 41286 *3 and 41286 #3.

What these specs mean in practice

e Factor: 0.60. Y Factor: 1.00. Geometry Factor (Cg): 0.0686. An e of 0.60 with a Y of exactly 1.00 is a steep-angle cup: thrust and radial load convert one for one in the rating calculation, and the bearing stays on its radial equations up to a large thrust component.

Mounting data

Maximum fillet radius on the mating housing: 1.52 mm (0.06 in). Housing Backing Shoulder Diameter, frontface (Da): 68.10 mm (2.72 in). Housing Backing Shoulder Diameter, backface (Db): 60.96 mm (2.40 in).

Quantity and configuration

Unit Quantity: 1 Pc. Cup only. Matching cones are the Timken 41100, 41106 and 41125.

Interchange guidance

41286 is an industry-standard inch tapered roller bearing cup number. Koyo, NTN, NSK and SKF all build a 41286 to the same boundary dimensions, and all interchange with this cup. The flanged 41286B is a different part and takes a different housing seat. Precision Class 3 is a Timken tolerance grade; a standard-class 41286 from any maker fits the same envelope but holds a wider tolerance band.