Timken493B-3Flanged Tapered Roller Bearing Cup – 5.3750 in Outside Diameter, 0.875 in Width, Class 3 Precision

Product Description

What this part is:

The Timken 493B-3 is a flanged inch tapered roller bearing cup with an integral outer-ring flange. It is cup only, 1 piece. Matching cones: Timken 495S and 497A.

Decoding the designation:

493 — Timken base cup number, 5.3750 in outside diameter.

B — flanged execution. The flange raises the outside diameter to 5.5890 in over a 0.2180 in band at one end of the cup.

*3 — Timken Precision Class 3. The same class is written 493B-3, 493B *3 and 493B #3.

Specifications:

Bearing Type: Tapered roller bearing cup. Series: 493. Base Number: 493B. Precision Class: Class 3. Rolling Elements: Tapered Roller. Number Of Rows: 1. Item Weight: 1.70 kg (3.7 lb). e Factor: 0.44. K Factor: 1.31. Y Factor: 1.35. G1 Factor: 293. G2 Factor: 164. Geometry Factor (Cg): 0.125. Unit Quantity: 1 Pc.

Dimensions and mounting:

Outside Diameter: 5.3750 in (136.525 mm). Overall Width: 0.875 in (22.225 mm). Outer Ring Flange Outside Diameter (D1): 5.5890 in (141.961 mm). Outer Ring Flange Width (C2): 0.2180 in (5.537 mm). Maximum fillet radius on the mating housing: 3.30 mm (0.130 in). Housing Backing Shoulder Diameter, frontface (Da): 131.83 mm (5.19 in).

Compatibility and replacement:

Mating cones: Timken 495S and Timken 497A. Related cup: Timken 493, unflanged, same 5.3750 in outside diameter, no flange.

Frequently asked questions:

What size is the Timken 493B-3?

5.3750 in (136.525 mm) outside diameter, 0.875 in (22.225 mm) width, flange outside diameter 5.5890 in (141.961 mm).

What does the B in 493B-3 mean?

B marks the flanged execution of the 493 cup. The -3 is Timken Precision Class 3.

Which cones mate with the 493B cup?

Timken 495S and Timken 497A.