Timken71450WTapered Roller Bearing Single Cone – 4.5000 in Bore, 1.9375 in Cone Width, Inch 71000 Series, Case-Carburized Steel

Product Description

What this part is:

Timken 71450W tapered roller bearing cone assembly — the inner race complete with its tapered rollers and cage. Brand: Timken. Manufacturer Part Number: 71450W. Base Number: 71450. Series: 71000 inch tapered. Bearing Type: tapered roller bearing, single cone. Bore Diameter: 4.5000 in (114.300 mm). Overall Width: 1.9375 in (49.213 mm). Number Of Rows: 1. Rolling Elements: Tapered Roller. Bore Type: Straight. Closure Type: Open. Bearing Material: Case-carburized alloy steel. Design Units: Imperial. Item Weight: 10.91 kg (24.06 lb). Unit Quantity: 1 Pc. Cone only. The matching cup is the Timken 71750.

Decoding the designation:

71450 — the cone number in Timken’s 71000 inch tapered series, giving a 4.5000 in bore.

Listing search forms: 71450W, 71450-W, 71450 W, 71450.

What these specs mean in practice:

The load rating of a tapered roller bearing is a property of the assembled cone and cup. Timken publishes the following for the 71450 cone. Dynamic Load Rating: 364,000 N. Static Load Rating: 543,000 N. Dynamic Radial Rating C90: 94,300 N. Dynamic Axial Rating Ca90: 67,100 N. K Factor: 1.4. G1 Factor: 269.2. G2 Factor: 49.5. Geometry Factor Cg: 0.116.

A K factor of 1.4 sits in the middle of the inch tapered range, giving a balanced split between radial and thrust capacity. Assembled against the 71750 cup the bearing measures 4.5000 in bore by 7.5000 in outside diameter with an overall assembled width of 1.8750 in. Tapered roller bearings are adjustable, so running clearance or preload is set at fitting rather than built into the components.

Mounting data:

Effective Center Location: -0.26 in (-6.6 mm), inside the cone backface. Max Shaft Fillet Radius: 0.140 in (3.600 mm). Shaft Backing Shoulder Diameter, frontface (da): 4.92 in (125 mm). Shaft Backing Shoulder Diameter, backface (db): 5.20 in (132 mm). Cage Location relative to backface (Aa): 0.18 in (4.6 mm). Cage Location relative to frontface (Ab): 0.10 in (2.5 mm). The cone seats on a straight shaft journal and is clamped against the backing shoulder. The cone width of 1.9375 in exceeds the assembled width of 1.8750 in because the cone backface projects past the cup when the rollers are seated.

Quantity and configuration:

Unit Quantity: 1 Pc. The sale unit is one cone assembly: inner race, tapered rollers and cage. The matching cup is the Timken 71750.

Interchange guidance:

71450 is an industry-standard inch tapered cone number built to the same ANSI/ABMA boundary dimensions by several manufacturers, so same-number substitution is valid on geometry. Cross-references are listed in the attribute table. The mating cup is the 71750, with a flanged variant 71750-B for TSF arrangements. The Timken 71425 is a related cone running against the same 71750 cup at a smaller bore and is a different part.