Timken529-3Tapered Roller Bearing Single Cone – 2.0000 in Bore, 1.4200 in Width, Class 3 Precision, Case-Hardened Steel

Product Description

What this part is:

Timken 529-3 inch tapered roller bearing single cone, 2.0000 in bore. The cone is the inner ring complete with its tapered roller complement and cage. Bore Diameter: 2.0000 in (50.8 mm). Overall Width: 1.4200 in (36.068 mm). Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Closure Type: Open. Cage Material: Pressed steel. Bearing Material: Case-hardened steel. Item Weight: 1.30 kg (2.90 lb). Base Number: 529.

Decoding the designation:

529 — inch tapered roller cone on a 2.0000 in bore, running against the 522 and 520X cups.

*3 — Precision Class 3: a tighter dimensional tolerance than standard, giving lower running vibration and closer shaft location. The same class is written -3, *3 and #3.

What these specs mean in practice:

Dynamic Load Rating: 165,000 N (37,000 lbf), rated at one million revolutions. Static Load Rating: 191,000 N (43,000 lbf). Dynamic radial rating at 90 million revolutions (C90): 42,700 N. Dynamic axial rating at 90 million revolutions (Ca90): 20,800 N. K Factor: 2.05. Precision Class: Class 3. A K factor of 2.05 is a shallow taper: this cone puts most of its capacity into radial load and takes a correspondingly smaller share as thrust, which suits a wheel-end or shaft position where the radial component dominates.

Mounting data:

Maximum shaft fillet radius cleared by the cone corner: 0.03 in (0.800 mm). Shaft backing shoulder diameter, frontface (da): 2.36 in (60 mm). Shaft backing shoulder diameter, backface (db): 2.4 in (61 mm). Cage clearance to the cone backface (Aa): 0.09 in (2.3 mm). Cage clearance to the cone frontface (Ab): 0.1 in (2.5 mm). Effective centre location: -0.50 in (-12.7 mm), which places the effective centre inside the cone backface. Geometry Factor (Cg): 0.0894.

Quantity and configuration:

Cone only. Unit Quantity: 1 Pc. The matching Timken single cups are the 522 and the 520X. The 522-B is the flanged execution of the same cup.

Interchange guidance:

The 529 cone number is an industry-standard inch designation, so SKF, FAG, NSK, NTN, Koyo, Nachi, PEER and Bower all catalogue a 529 cone on the same envelope and the same K factor. Those are built to standard tolerance; the *3 marking on this piece is the tighter Class 3 execution. Searchable forms of the number: 529-3, 529*3, 529#3, 529 3 and 5293.