Timken41125/41286BTapered Roller Bearing Cone and Flanged Cup Set – 1.1250 in Bore, 2.8593 in Outside Diameter, 82,600 N Dynamic Load Rating

Product Description

What this part is:

Timken 41125/41286-B inch tapered roller bearing set, a TSF assembly pairing the 41125 single cone with the 41286-B single flanged cup. Bore Diameter: 1.1250 in (28.575 mm). Outside Diameter: 2.8593 in (72.626 mm). Cone Width: 0.9550 in (24.257 mm). Cup Width: 0.6875 in (17.463 mm). Series: 41000. Base Number: 41125. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: Case-Carburized Steel. Item Weight: 1.071 kg (2.36 lb) cone and 0.5 kg (1.1 lb) cup. Design Units: Imperial.

Decoding the designation:

41125 — the cone number in the 41000 inch series, fixing the 1.1250 in bore and the raceway angle.

41286-B — the cup number. The B marks a flanged outer ring, a distinct part from the plain 41286.

What these specs mean in practice:

Dynamic Load Rating: 82,600 N (18,600 lbf) at 1 million revolutions. Static Load Rating: 64,100 N (14,400 lbf). Dynamic Radial Rating C90: 21,400 N (4,820 lbf). Dynamic Axial Rating Ca90: 22,100 N (4,960 lbf). K Factor: 0.97. e Factor: 0.6. Y Factor: 1. G1 Factor: 13. G2 Factor: 5.83. Geometry Factor (Cg): 0.0686.

A K factor below 1 puts this pairing at a steep raceway angle, so its thrust capacity (Ca90 22,100 N) runs slightly above its 90-million-revolution radial capacity (C90 21,400 N). That balance suits shafts whose principal load is axial.

Outer Ring Flange Outside Diameter (D1): 3.0741 in (78.082 mm). Outer Ring Flange Width (C2): 0.2187 in (5.555 mm). The flange backs the cup against the housing face, so the housing can be bored straight through and both bores stay in line. That also sets the seal square to the shaft.

Mounting data:

Effective Center Location: -0.16 in (-4.1 mm), the load centre lying inside the cone backface. Max Shaft Fillet Radius: 0.19 in (4.8 mm). Max Housing Fillet Radius: 0.06 in (1.5 mm). Shaft Backing Shoulder Diameter, frontface (da): 1.44 in (36.5 mm). Shaft Backing Shoulder Diameter, backface (db): 1.89 in (48 mm). Housing Backing Shoulder Diameter, frontface (Da): 2.8 in (71.10 mm). Cage Location relative to backface (Aa): 0.09 in (2.3 mm). Cage Location relative to frontface (Ab): 0.12 in (3 mm). Precision Class: Not specified.

Quantity and configuration:

Unit Quantity: 2 Pcs. One 41125 cone and one 41286-B flanged cup, supplied together as the set.

Interchange guidance:

Searchable variants of this designation: 41125/41286B, 41125 / 41286-B, 41125 41286B, 41286-B.