Timken52400-3/52637B-3Flanged Tapered Roller Bearing Cone and Cup — 4 in Bore, 6-3/8 in OD, 6.621 in Flange OD, Class 3, 52000 Series

Product Description

What this part is

Timken 52400-3/52637B-3 is a Class 3 precision inch single-row tapered roller bearing with a flanged cup (TSF type) from the Timken 52000 series: a 52400-3 cone with a 52637B-3 single flanged cup. Bore Diameter: 4.0000 in (101.600 mm). Outside Diameter: 6.3750 in (161.925 mm). Flange Outer Diameter: 6.6210 in (168.173 mm). Precision Class: Class 3. Condition: new old stock, made in USA.

Decoding the designation

52400 — Timken cone, 4 in bore, 52000 series.

52637B — Timken single cup, 6-3/8 in outside diameter. The B suffix on a cup marks a flanged cup; the flange locates the cup axially in a through-bored housing.

-3 — Timken Class 3 precision on both cone and cup: tighter dimensional and running tolerance than standard Class 2 or Class 4 parts, for lower runout and running vibration.

What these specs mean in practice

Dynamic Load Rating (C1): 223,000 N (50,200 lbf). Dynamic Load Rating (C90): 57,900 N (13,000 lbf). Static Load Rating (C0): 343,000 N (77,000 lbf). Dynamic Thrust Rating (Ca90): 47,100 N (10,600 lbf). A single-row tapered roller bearing takes combined radial and one-direction thrust load and is normally mounted opposed to a second bearing.

Cone Width: 1.4219 in (36.116 mm). Cup Width: 1.0313 in (26.195 mm). Cup Flange Width: 0.25 in (6.35 mm). Series: 52000. Rolling Elements: Tapered Roller. Number Of Rows: 1. Closure Type: Open.

Mounting data

Cone Backface To-Clear Radius: 0.14 in (3.600 mm). Shaft Backing Shoulder Diameter, Frontface (da): 4.37 in (111 mm). Shaft Backing Shoulder Diameter, Backface (db): 4.61 in (117 mm). Housing Backing Shoulder Diameter, Frontface (Da): 6.14 in (154.94 mm). Cup Backface To-Clear Radius: 0.130 in (3.30 mm). Effective Center Location: -0.02 in (-0.5 mm). Cage-Cone Backface Clearance (Aa): 0.16 in (4.1 mm). Cage-Cone Frontface Clearance (Ab): 0.12 in (3 mm). K Factor: 1.23. ISO e Factor: 0.47. ISO Y Factor: 1.26. Geometry Factor (Cg): 0.152.

Interchange guidance

The standard-precision version of this bearing is 52400/52637B. The 52637B flanged cup also mates with the 52387 and 52387W cones; the plain 52637 cup is the unflanged version for a shouldered housing bore.