Timken29580-3Tapered Roller Bearing Cone – 2.3622 in (60 mm) Bore, 1.0000 in Width, Class 3 Precision, Case-Carburized Steel

Product Description

What this part is:

Timken 29580-3 inch tapered roller bearing cone — the inner ring complete with its tapered roller set and cage. Bore Diameter: 2.3622 in (60 mm). Overall Width: 1.0000 in (25.400 mm), the inner ring width B. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Bearing Material: Case-carburized steel. Item Weight: 2.35 kg (5.17 lb). Series: 29500. Design units are imperial. Cone only. The matching cups are the Timken 29520 and 29521.

Decoding the designation:

29580 — the cone number in Timken’s 29500 inch series. Bore 2.3622 in, a metric-round 60 mm.

-3, also written *3 or #3 — Precision Class: Class 3. A tighter tolerance than standard, giving lower running vibration and closer shaft location.

What these specs mean in practice:

Dynamic Load Rating: 131,000 N (29,400 lbf) at one million revolutions. Static Load Rating: 161,000 N (36,300 lbf). Timken’s 90-million-revolution figures are C90 33,800 N (7,610 lbf) radial and Ca90 26,600 N (5,970 lbf) thrust.

K Factor: 1.27. The K factor is the ratio between radial and thrust capability; 1.27 is a shallow taper that carries a large share of its rating as thrust, which suits a position taking combined load.

G1 Factor: 70.3. G2 Factor: 25.9. Geometry Factor (Cg): 0.111.

Mounting data:

Effective Center Location: -0.03 in (-0.8 mm), inside the cone backface. Max Shaft Fillet Radius: 0.140 in (3.600 mm), the largest shaft corner radius the cone bore chamfer will clear. Shaft Backing Shoulder Diameter, frontface (da): 2.68 in (68 mm). Shaft Backing Shoulder Diameter, backface (db): 2.95 in (75 mm). Cage Location relative to backface (Aa): 0.07 in (1.8 mm). Cage Location relative to frontface (Ab): 0.08 in (2 mm).

Quantity and configuration:

Unit Quantity: 1 Pc — one 29580-3 cone. The mating cups are the Timken 29520 and 29521.

Interchange guidance:

29580 is an industry-standard inch cone number carried across the general taper makers, so a 29580 from SKF, FAG, NSK, NTN, Koyo, Fersa, BCA or PEER interchanges on boundary dimensions and rating class. Those are standard-tolerance cones: the -3 here is a Class 3 execution, a tighter grade than the plain number.