BowerTapered Roller Bearing Cone and Cup Set — 60 mm (2.3622 in) Bore, 110 mm (4.3307 in) OD, 0.8661 in Width, Single Row

Product Description

What this part is

Bower 397/394A is a single-row tapered roller bearing set: a 397 cone (inner ring, rollers and cage) and a 394A cup (outer ring). Bore Diameter: 2.3622 in (60 mm). Outside Diameter: 4.3307 in (110 mm). Total Width: 0.8661 in (21.999 mm). The set carries combined radial and one-direction thrust load and is normally mounted opposed to a second bearing.

Decoding the designation

397 — ABMA cone number, 60 mm bore, in the 395 series that shares the 394A cup.

394A — ABMA cup number, 110 mm OD, 0.7411 in cup width.

397/394A — cone/cup pair forming one complete single-row bearing.

What these specs mean in practice

Interchange data for the same ABMA numbers (Timken catalogue): Dynamic Load Rating: 98,900 N (C1, 1 million revolutions). Static Load Rating: 125,000 N. Dynamic Radial Rating C90: 25,600 N. Dynamic Axial Rating Ca90: 17,600 N. K Factor: 1.45. e Factor: 0.4. Y Factor: 1.49.

Mounting data

Cone Width: 0.8660 in (21.996 mm). Cup Width: 0.7411 in (18.824 mm). Max Shaft Fillet Radius: 0.030 in (0.8 mm). Max Housing Fillet Radius: 0.050 in (1.27 mm). Shaft Backing Shoulder Diameter: 2.68 in (68 mm) front face, 2.72 in (69 mm) back face. Housing Backing Shoulder Diameter: 4.15 in (105.40 mm) front face, 3.98 in (101.09 mm) back face. Effective Center Location: -0.03 in (-0.8 mm).

Quantity and configuration

Unit Quantity: 2 Pcs — one 397 cone and one 394A cup. Rolling Elements: Tapered Roller. Number Of Rows: 1. Closure Type: Open. Bore Type: Straight.

Interchange guidance

Cross-Reference: Timken 397/394A. The 394A cup is shared across the 395 series, including cones 390, 390A, 392, 395-S and 396A.