Timken48282Tapered Roller Bearing Cone – 4.7500 in Bore, 1.5000 in Width, K Factor 1.91

Product Description

What this part is

Timken 48282 tapered roller bearing cone. This is the inner ring with its tapered roller set and cage, the rotating half of a Timken TS single-row inch tapered roller bearing. Bore Diameter: 4.7500 in (4-3/4 in, 120.650 mm). Overall Width: 1.5000 in (38.100 mm) inner ring width. Item Weight: 7.64 kg (16.84 lb). Dynamic Load Rating: 268,000 N (60,200 lbf) at C1. Static Load Rating: 493,000 N (111,000 lbf). GTIN: 053893308449. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Cage Type: Pressed. Bearing Material: case-carburized alloy steel. Design Units: Imperial. Series: 48200. Base Number: 48282.

Decoding the designation

48282 — a cone number in Timken’s inch 48200 tapered roller series, fixing the 4.7500 in bore and the 1.5000 in inner ring width.

No precision suffix is present on this part. Precision Class: Not specified.

What these specs mean in practice

K Factor: 1.91. A K factor of 1.91 is a shallow taper: the bearing is strongly weighted toward radial load, and the thrust rating is a fraction of the radial rating — Ca90 36,300 N against C90 69,400 N. That is the profile of a shaft position where the load is mostly radial and the axial duty is locating rather than working.

Dynamic Load Rating: 268,000 N (C1, at 1 million revolutions, ISO method). Dynamic Radial Load Rating at 90 million revolutions (C90): 69,400 N. Dynamic Axial Rating at 90 million revolutions (Ca90): 36,300 N. Static Load Rating: 493,000 N.

G1 Factor: 353. G2 Factor: 91.3. Geometry Factor (Cg): 0.114, the geometry constant for the lubrication life adjustment factor a3l.

Mounting data

Maximum Shaft Fillet Radius: 0.140 in (3.600 mm) — the largest fillet the shaft shoulder may carry and still be cleared by the cone corner. Shaft Backing Shoulder Diameter, frontface (da): 5.16 in (131 mm). Shaft Backing Shoulder Diameter, backface (db): 5.39 in (137 mm). Effective Centre Location: -0.22 in (-5.6 mm); the negative value places the effective load centre inside the cone backface. Cage Location relative to backface (Aa): 0.06 in. Cage Location relative to frontface (Ab): 0.15 in.

Quantity and configuration

Unit Quantity: 1 Pc. Cone only — inner ring, rollers and cage. The matching single cup is the Timken 48220. The Timken 48220D is the double cup for the same cone, used where two of these cones run back to back in a TDO two-row assembly.

Interchange guidance

48282 is an inch tapered roller cone number on the common industry dimensional standard, so a 48282 from another inch-series maker carries the same bore, width and raceway angle and is a direct substitution. Cross-references: Koyo 48282, NTN 4T-48282, NSK 48282, Bower / BCA 48282, Fersa 48282.