Timken3774/3731Tapered Roller Bearing Cone and Cup Set – 1.5625 in Bore, 3.9362 in Outside Diameter, 0.9375 in Cup Width, 2 Pcs

Product Description

What this part is

The Timken 3774/3731 is a single-row inch tapered roller bearing supplied as a cone and a cup, 1.5625 in (39.688 mm) bore, 3.9362 in (99.979 mm) outside diameter. The 3774 cone carries the inner race, the roller set and the cage; the 3731 cup is the outer race. Sold as 2 pieces.

Decoding the designation

3774 — the cone number, a 3700-series inch tapered roller cone on a 1.5625 in bore with a 1.1930 in inner ring width.

3731 — the cup number, giving a 3.9362 in outside diameter and a 0.9375 in outer ring width.

Specifications

Cone Part Number: 3774. Cup Part Number: 3731. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Design Units: Imperial. Bore Diameter: 1.5625 in (39.688 mm). Outside Diameter: 3.9362 in (99.979 mm). Cone Width: 1.1930 in (30.302 mm). Cup Width: 0.9375 in (23.813 mm). Series: 3700. Bearing Material: Case-Carburized Steel. Item Weight: 3.17 kg (6.99 lb) for the two pieces. Cone Weight: 2.171 kg (4.79 lb). Cup Weight: 1.0 kg (2.2 lb). Harmonization Code: 8482.20.00. Unit Quantity: 2 Pcs.

Dynamic Load Rating (C1): 122,000 N (27,500 lbf). Dynamic Radial Load Rating (C90): 31,700 N (7,120 lbf). Dynamic Axial Rating (Ca90): 18,300 N (4,120 lbf). Static Load Rating (C0): 153,000 N (34,300 lbf). K Factor: 1.73. e Factor: 0.34. Y Factor: 1.77.

Dimensions and mounting

Effective Center Location: -0.32 in (-8.1 mm), measured inside the cone backface. Max Shaft Fillet Radius: 0.140 in (3.600 mm). Max Housing Fillet Radius: 0.130 in (3.30 mm). Shaft Backing Shoulder Diameter, frontface (da): 1.93 in (49 mm). Shaft Backing Shoulder Diameter, backface (db): 2.17 in (55 mm). Housing Backing Shoulder Diameter, frontface (Da): 3.62 in (91.90 mm). Housing Backing Shoulder Diameter, backface (Db): 3.35 in (85.09 mm).

Compatibility and replacement

3774 and 3731 are standard inch tapered roller numbers carried across the trade: SKF 3774/3731, FAG K3774-3731, NSK 3774/3731, NTN 4T-3774/3731, Koyo 3774/3731, Fersa 3774/3731, BCA/Bower 3774/3731, PEER 3774/3731. Searchable variants: 3774/3731, 3774-3731, 3774 3731, 3774, 3731.

Frequently asked questions

What are the dimensions of the Timken 3774/3731?1.5625 in (39.688 mm) bore and 3.9362 in (99.979 mm) outside diameter.

What pieces are included?One 3774 cone and one 3731 cup, 2 pieces.

What is the dynamic load rating?Dynamic Load Rating (C1): 122,000 N (27,500 lbf).