TimkenTapered Roller Bearing Cone – 2.0000 in Bore, Wide Inner Ring, Class 3 Precision, Inch Series 450

Product Description

What this part is

Timken 455W *3 inch tapered roller bearing cone, the inner ring carrying its tapered rollers and cage. Bore Diameter: 2.0000 in (50.8 mm). Overall Width: 1.1542 in (29.317 mm). Series: 450. Base Number: 455W. Number Of Rows: 1. Rolling Elements: Tapered Roller. Bore Type: Straight. Bearing Material: Steel. Precision Class: Class 3. Item Weight: 3.05 kg (6.72 lb).

Decoding the designation

455 — the cone base number in the Timken 450 inch tapered series, fixing the bore and the roller path.

W — the wide cone execution, which lengthens the inner ring to 1.1542 in and spreads the roller contact over a longer raceway.

*3 — precision Class 3, written interchangeably as *3, -3 or #3. Class 3 holds tighter bore and running tolerances than standard, giving lower running vibration and closer shaft location.

What these specs mean in practice

Dynamic Load Rating: 136,000 N (30,500 lbf) at 1 million revolutions. Static Load Rating: 166,000 N (37,200 lbf). Dynamic Radial Load Rating C90: 35,200 N (7,900 lbf). Dynamic Axial Rating Ca90: 20,200 N (4,540 lbf). K Factor: 1.74. Geometry Factor Cg: 0.0946. G1 Factor: 58.6. G2 Factor: 17.1. A K factor of 1.74 places this cone in the shallower half of the inch range, so radial capacity leads and thrust duty stays moderate.

Mounting data

Effective Center Location: -0.28 in (-7.1 mm), inside the cone backface. Max Shaft Fillet Radius: 0.030 in (0.8 mm) on the mating shaft. Shaft Backing Shoulder Diameter Frontface da: 2.32 in (59 mm). Shaft Backing Shoulder Diameter Backface db: 2.36 in (60 mm). Cage Location Relative To Backface Aa: 0.07 in (1.8 mm). Cage Location Relative To Frontface Ab: 0.08 in (2 mm).

Quantity and configuration

Unit Quantity: 1 Pc. Cone only. The matching cups are the Timken 452 and 452A.

Interchange guidance

The 455W cone number is carried across the inch tapered roller programme by SKF, FAG, NSK, NTN, Koyo, Fersa and BCA/Bower on the same envelope. The Timken 456 shares this inner ring width and these load ratings on a 2.1250 in bore, so it is a related size rather than an interchange. MPN Variants: 455W, 455-W, 455W-3, 455-W *3, 455W#3, 455 W 3.