Timken52393-3/52637-3Tapered Roller Bearing Cone and Cup — 3.9375 in (100.013 mm) Bore, 6.3750 in (161.925 mm) OD, 1.4375 in Width, Class 3

Product Description

What this part is

Timken 52393-3/52637-3 is a single-row tapered roller bearing made to precision Class 3: one 52393 cone and one 52637 cup. Bore Diameter: 3.9375 in (100.013 mm). Outside Diameter: 6.3750 in (161.925 mm). Overall Width: 1.4375 in (36.513 mm). Cone Width: 1.4219 in (36.116 mm). Cup Width: 1.0313 in (26.195 mm). Item Weight: 2.7 kg (5.9 lb). Precision Class: Class 3. Rolling Elements: Tapered Roller.

Decoding the designation

52393 — Timken inch-series cone in the 52000 series, 3.9375 in bore.

52637 — the matching single cup, 6.3750 in OD.

-3 — Class 3 precision: tighter bore, OD, width and runout tolerances than standard Class 2 for smoother, lower-vibration running.

What these specs mean in practice

Dynamic Load Rating: 223,000 N (50,200 lbf), Timken C1 at 1 million revolutions. Dynamic Radial Rating C90: 57,900 N (13,000 lbf). Dynamic Axial Rating Ca90: 47,100 N (10,600 lbf). Static Load Rating: 343,000 N (77,000 lbf). e Factor: 0.47. K Factor: 1.23. Y Factor: 1.26.

Mounting data

Effective Center Location: -0.02 in (-0.5 mm). 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): 4.29 in (109 mm). Shaft Backing Shoulder Diameter, Backface (db): 4.57 in (116 mm). Housing Backing Shoulder Diameter, Frontface (Da): 6.08 in (154.43 mm). Housing Backing Shoulder Diameter, Backface (Db): 5.67 in (144.02 mm).

Quantity and configuration

Unit Quantity: 2 Pcs, one cone and one cup forming one complete single-row bearing.

Interchange guidance

52393/52637 is an ABMA standard inch set also produced by SKF, NTN (4T-52393/52637), Koyo and Bower; Class 3 is a Timken precision grade on the same envelope. The 52393 cone also mates the 52637D double cup.