Timken3479/3426Tapered Roller Bearing Cone and Cup Set – 1.4375 in Bore, 3.1230 in Outside Diameter, 1.1563 in Width, 105,000 N Dynamic Load Rating

Product Description

What this part is

Timken 3479/3426 inch tapered roller bearing set, a TS assembly pairing the 3479 single cone with the 3426 single cup. Bore Diameter: 1.4375 in (36.513 mm). Outside Diameter: 3.1230 in (79.324 mm). Overall Width: 1.1563 in (29.370 mm). Cone Width: 1.1721 in (29.771 mm). Cup Width: 0.9375 in (23.813 mm). Series: 3400. Base Number: 3479. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: High Alloy Steel. Item Weight: 0.7 kg (1.5 lb). Design Units: Imperial.

Decoding the designation

3479 — the cone number, fixing the 1.4375 in bore and the raceway angle.

3426 — the cup number, fixing the 3.1230 in outside diameter and the matching raceway.

What these specs mean in practice

Dynamic Load Rating: 105,000 N (23,500 lbf) at 1 million revolutions. Static Load Rating: 119,000 N (26,800 lbf). Dynamic Radial Rating C90: 27,100 N (6,100 lbf). Dynamic Axial Rating Ca90: 17,000 N (3,820 lbf). K Factor: 1.6. e Factor: 0.37. Y Factor: 1.64. G1 Factor: 29.9. G2 Factor: 11.2. Geometry Factor (Cg): 0.0781.

A K factor of 1.6 sets a shallow raceway angle for this envelope, which weights the capacity toward radial load. Mounting a second bearing facing the other way locates the shaft in both directions and lets the pair be set to a chosen end play or preload.

Mounting data

Effective Center Location: -0.34 in (-8.6 mm), the load centre lying inside the cone backface. Max Shaft Fillet Radius: 0.030 in (0.8 mm). Max Housing Fillet Radius: 0.130 in (3.30 mm). Shaft Backing Shoulder Diameter, frontface (da): 1.75 in (44.5 mm). Shaft Backing Shoulder Diameter, backface (db): 1.79 in (45.5 mm). Housing Backing Shoulder Diameter, frontface (Da): 2.94 in (74.68 mm). Housing Backing Shoulder Diameter, backface (Db): 2.64 in (67.06 mm). Cage Location relative to backface (Aa): 0.04 in (1 mm). Cage Location relative to frontface (Ab): 0.05 in (1.3 mm). Precision Class: Not specified.

Quantity and configuration

Unit Quantity: 2 Pcs. One 3479 cone and one 3426 cup, supplied together as the set.

Interchange guidance

The 3479/3426 designation is the shared inch tapered roller bearing number, so it is carried by SKF, NSK, Koyo, Fersa, BCA/Bower and PEER as 3479/3426, by NTN with its 4T- prefix as 4T-3479/3426, and by FAG with its K- cone prefix as K-3479/K-3426. Searchable variants: 3479/3426, 3479 / 3426, 3479 3426.