Timken13890Tapered Roller Bearing Cone, 1.515 in Bore, 0.469 in Width, 13800 Series, Mates Timken 13830 Cup

Product Description

What this part is

Timken 13890 tapered roller bearing cone — the inner ring complete with its tapered rollers and a one-piece pressed steel cage. Brand: Timken. Manufacturer Part Number: 13890. Base Number: 13890. Bearing Type: single-row tapered roller bearing cone, Type TS. Series: 13800. Bore: 1.515 in. Cone Width: 0.469 in. Bore Type: straight. Number of Rows: 1. Rolling Elements: tapered rollers. Cage Type: one-piece pressed steel. Cage Material: stamped steel. Material: case carburized steel. Maximum Shaft Fillet Radius: 0.010 in. Finish: uncoated. Item Weight: 0.23 lb. Design Units: Inch. Unit Quantity: 1 Pc.

Quantity and configuration

Cone only. The matching cup is the Timken 13830. Assembled, the 13890/13830 bearing measures 2.5000 in (63.500 mm) outside diameter by 0.5000 in (12.700 mm) overall width. Unit Quantity: 1 Pc.

Published ratings and dimensions

Figures for the complete 13890/13830 assembly. Dynamic Radial Load Rating at 1 million revolutions (C1): 6 100 lbf (27 200 N). Dynamic Radial Load Rating at 90 million revolutions (C90): 1 580 lbf (7 040 N). Static Radial Load Rating (C0): 7 430 lbf (33 000 N). Dynamic Axial Rating at 90 million revolutions (Ca90): 938 lbf (4 170 N). K Factor: 1.69. e Factor: 0.35. Y Factor: 1.73. Temperature rating: 176 to 203 °F.

Decoding the designation

13890 is the Timken cone number and 13830 is its cup, so the pair is quoted 13890/13830. The neighbouring cone 13889 runs on the same 13830 cup at a 1.500 in bore, fifteen thousandths of an inch smaller. A 138xx-90xxx number denotes a complete pre-set assembly.

What these specs mean in practice

This is a shallow, narrow bearing — 0.5 in overall width on a 2.5 in outside diameter. That envelope puts the 13800 series into trailer and light wheel hubs, small gearboxes and idler positions where axial room for a taper is limited.

The K factor of 1.69 is the ratio Timken uses to convert applied thrust into an equivalent radial load, and a lower K corresponds to a shallower contact angle with proportionally less thrust capacity for the size. The pressed steel cage holds the rollers on the cone through handling, so the cone arrives as one piece ready to press on.

Interchange guidance

13890 is an industry-standard cone number, supplied by Timken, Koyo, NTN and Bower / BCA, and the 13830 cup pairing is common to all of them. Related builds: 13889 at a 1.500 in bore on the same cup, and the 13890-2 and 13890-3 precision-class variants. Searchable variants of this number are 13890, 13890 cone, 13890/13830 and 13890-13830.