Timken33472-3Tapered Roller Bearing Cup – 4.7244 in (120 mm) Outside Diameter, 0.9230 in Width, Class 3 Precision

Product Description

What this part is

Timken 33472-3 inch tapered roller bearing cup. Bearing Type: Tapered roller bearing cup — the outer race of a single-row tapered roller bearing. Series: 334. Base Number: 33472. Outside Diameter: 4.7244 in (120 mm). Overall Width: 0.9230 in (23.444 mm). Rolling Elements: Tapered Roller. Number Of Rows: 1. Item Weight: 1.30 kg (2.8 lb).

Decoding the designation

33472 — Timken base cup number in the 334 inch series. The outside diameter is exactly 120 mm, so this cup drops into a metric housing bore as well as an inch one.

*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 33472-3, 33472 *3 and 33472 #3.

What these specs mean in practice

e Factor: 0.44. Y Factor: 1.38. Geometry Factor (Cg): 0.116. The e factor is the thrust-to-radial load ratio at which the rating calculation changes to its thrust-loaded form, and the Y factor converts thrust into equivalent radial load within it.

Mounting data

Maximum fillet radius on the mating housing: 0.76 mm (0.03 in). Housing Backing Shoulder Diameter, frontface (Da): 114.00 mm (4.49 in). Housing Backing Shoulder Diameter, backface (Db): 106.93 mm (4.21 in).

Quantity and configuration

Unit Quantity: 1 Pc. Cup only. Matching cones are the Timken 33225 and 33251.

Interchange guidance

33472 is an industry-standard inch tapered roller bearing cup number. Koyo, NTN, NSK and SKF all build a 33472 to the same boundary dimensions, and all interchange with this cup. Precision Class 3 is a Timken tolerance grade; a standard-class 33472 from any maker fits the same envelope but holds a wider tolerance band.