Timken3577/3520Tapered Roller Bearing Cone and Cup Set – 1.6250″ Bore, 3.3125″ Outside Diameter, 1.1875″ Width, 113,000 N Dynamic Rating

Product Description

What this part is:

Timken 3577 / 3520, a complete inch-series TS tapered single bearing — one cone assembly and its matched cup. Bore Diameter: 1.6250 in (41.275 mm). Outside Diameter: 3.3125 in (84.138 mm). Overall Width: 1.1875 in (30.163 mm). Inner Ring Width (B): 1.2160 in (30.886 mm). Outer Ring Width (C): 0.9375 in (23.813 mm). Item Weight: 0.70 kg (1.60 lb). Dynamic Load Rating: 113,000 N. Static Load Rating: 134,000 N. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Precision Class: Not specified. Unit Quantity: 1 Pc.

Decoding the designation:

3577 — the cone number in Timken’s inch tapered roller range.

3520 — the matched cup number. Written together as 3577/3520, the pair is the complete bearing.

What these specs mean in practice:

e Factor: 0.31. K Factor: 1.91. Y Factor: 1.96. A K factor of 1.91 is a shallow raceway angle, which weights the bearing toward radial capacity and away from thrust compared with a steeper taper on the same envelope. Dynamic Axial Rating (Ca90): 15,400 N. Dynamic Radial Rating at 90 million revolutions (C90): 29,400 N. G1 Factor: 39.5. G2 Factor: 10.5. Geometry Factor (Cg): 0.0808, the constant Timken uses in its lubrication life adjustment factor.

Mounting data:

Effective Center Location: –0.4 in (–10.2 mm), measured inside the cone back face. Maximum Shaft Fillet Radius: 0.140 in (3.600 mm). Maximum Housing Fillet Radius: 0.130 in (3.30 mm). Shaft Backing Shoulder Diameter, Frontface (da): 1.89 in (48 mm). Shaft Backing Shoulder Diameter, Backface (db): 2.13 in (54 mm). Housing Backing Shoulder Diameter, Frontface (Da): 3.15 in (80.00 mm). Housing Backing Shoulder Diameter, Backface (Db): 2.91 in (73.91 mm). Cage Location relative to back face (Aa): 0.07 in. Cage Location relative to front face (Ab): 0.05 in.

Quantity and configuration:

Unit Quantity: 1 Pc. One cone assembly and its matched cup, supplied together as one complete single-row TS bearing.

Interchange guidance:

3577/3520 is the industry designation for this bearing and is carried by SKF, FAG as K-3577-3520, NSK, NTN as 4T-3577/3520, Koyo, Fersa, BCA/Bower and PEER. Harmonization Code: 8482.20.00.