Timken15580B/15520Tapered Roller Bearing Cone and Cup Assembly, 1-1/16 in ID x 2-1/4 in OD x 0.6875 in Wide, Single-Row Imperial TS

Product Description

What this part is:

Single-row imperial tapered roller bearing, TS (Tapered Single) style, supplied as a complete assembly: one Timken 15580B cone (inner ring with rollers and cage) seated in one 15520 cup (outer ring). Cone and cup are separable. Unit Quantity: 1 Pc. New old stock in the original Timken carton, in factory wrapping with preservative coating.

Decoding the designation:

15580 — Timken cone, 1.0625 in bore.

15520 — matching Timken cup, 2.25 in outside diameter.

15580B — cone marking as printed on the carton, built on the 15580 cone envelope.

15580/15520 — the assembly number of the cone and cup pair.

Specifications:

Bore Diameter: 1.0625 in (26.988 mm). Outside Diameter: 2.2500 in (57.150 mm). Assembled Width (T): 0.6875 in (17.463 mm). Cone Width (B): 0.6875 in (17.463 mm). Cup Width (C): 0.5313 in (13.495 mm). Dynamic Radial Load Rating C1 (ISO, 1 million revolutions): 46,000 N (10,300 lbf). Dynamic Radial Load Rating C90 (Timken, 90 million revolutions): 11,900 N (2,680 lbf). Dynamic Axial Rating Ca90: 7,070 N (1,590 lbf). Static Radial Load Rating C0: 50,100 N (11,300 lbf). K Factor: 1.69. e Factor: 0.35. Y Factor: 1.73. G1 Factor: 12.7. G2 Factor: 10.3. Geometry Factor Cg: 0.0577. Item Weight: 0.20 kg (0.4 lb). Number Of Rows: 1. Rolling Elements: Tapered Roller.

Dimensions and mounting:

Effective Centre Location: −0.2 in (−5.1 mm), inside the cone backface. Shaft Backing Shoulder Diameter: 1.26 in (32 mm) frontface da, 1.52 in (38.5 mm) backface db. Housing Backing Shoulder Diameter: 2.11 in (53.10 mm) frontface Da, 2.01 in (51.05 mm) backface Db. Maximum Shaft Fillet Radius: 0.14 in (3.600 mm). Maximum Housing Fillet Radius: 0.06 in (1.52 mm). Cage Location Aa: 0 in. Cage Location Ab: 0.1 in (2.5 mm).

Compatibility and replacement:

The 15520 cup is shared with the 15578 and 15590 cones, which differ in bore. Cross-references: Koyo 15580/15520, NSK 15580/15520 and Nachi 15580/15520, all carrying the standard 15580 cone without the B marking. Load ratings and internal geometry differ between makers. CAD model and data sheet: available from Timken (cad.timken.com).

Frequently asked questions:

Does this listing include both the cone and the cup?

Yes. It is one complete assembly: one 15580B cone and one 15520 cup.

What are the bore and outside diameter?

Bore is 1.0625 in (26.988 mm) and outside diameter is 2.25 in (57.150 mm), with an assembled width of 0.6875 in (17.463 mm).

What are the load ratings?

Timken publishes a dynamic radial rating C1 of 46,000 N, a C90 of 11,900 N, a dynamic axial rating Ca90 of 7,070 N and a static radial rating C0 of 50,100 N.