Timken97493Taper Roller Single Cone – 4.9330 in Bore, 1.9460 in Inner Ring Width, K Factor 0.79, Case-Carburized Steel.

Product Description

What this part is:

Timken 97493 tapered roller bearing single cone. A cone is the inner ring with its roller and cage assembly. Bore: 4.9330 in (125.298 mm). Inner Ring Width: 1.9460 in (49.428 mm). Series: 97000. Case-carburized steel, stamped steel cage. Design Units: Imperial. Country of Origin: United States.

Decoding the designation:

97493 is the Timken cone part number in the 97000 inch series. Searchable forms: 97493, 97-493, 97 493.

Load ratings, per row:

Dynamic Radial Load Rating C1, at 1 million revolutions: 84,500 lbf (376,000 N). Dynamic Radial Load Rating C90, at 90 million revolutions on the Timken life method: 21,900 lbf (97,500 N). Dynamic Axial Rating Ca90: 27,600 lbf (123,000 N). Static Radial Load Rating C0: 109,000 lbf (486,000 N). These are single-row figures for the cone in its published cup pairing.

What these specs mean in practice:

K Factor: 0.79. K is the ratio of radial to axial capacity, and a K below 1 marks a steep contact angle that carries a high share of thrust for its radial rating — useful in gear and pinion positions where the axial component is large. Effective Center Location: 0.52 in (13.2 mm), the point from which shaft and bearing spacing are calculated. G1 Factor: 237.1. G2 Factor: 44.6. Geometry Factor (Cg): 0.131, used in the lubrication life adjustment factor a3l.

Mounting dimensions:

Maximum shaft fillet radius: 0.14 in (3.600 mm). Shaft backing shoulder diameter, frontface (da): 5.65 in (143.5 mm). Shaft backing shoulder diameter, backface (db): 5.87 in (149 mm). Cage location relative to backface (Aa): 0.28 in (7.1 mm). Cage location relative to frontface (Ab): 0.21 in (5.3 mm). Weight: 38.27 lb (17.357 kg).

Quantity and configuration:

Cone only, comprising the inner ring, rollers and cage. Unit Quantity: 1 Pc. Number of rows: 1.

Interchange guidance:

Timken lists two matching cups for the 97493: the 97900 single cup and the 97905X single cup. Cone and cup are a matched raceway pair.