Timken3577/3530Tapered Roller Bearing Cone and Cup Set – 1.6250 in Bore, 3.3125 in OD, Inch Series 3500

Product Description

What this part is:

Timken 3577 / 3530 inch tapered roller bearing, supplied as the matched cone and 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). Series: 3500. Base Number: 3577. Number Of Rows: 1. Rolling Elements: Tapered Roller. Bore Type: Straight. Bearing Material: Steel. Precision Class: Not specified. Item Weight: 0.70 kg (1.60 lb).

Decoding the designation:

3577 — the cone base number in the Timken 3500 inch tapered series, fixing the 1.6250 in bore and the roller path.

3530 — the mating cup, fixing the 3.3125 in outside diameter and the housing seat.

What these specs mean in practice:

Dynamic Load Rating: 113,000 N (25,500 lbf) at 1 million revolutions. Static Load Rating: 134,000 N (30,100 lbf). Dynamic Radial Load Rating C90: 29,400 N (6,610 lbf). Dynamic Axial Rating Ca90: 15,400 N (3,460 lbf). e Factor: 0.31. K Factor: 1.91. Y Factor: 1.96. Geometry Factor Cg: 0.0808. G1 Factor: 39.5. G2 Factor: 10.5. A K factor of 1.91 is among the shallowest in the inch range, so radial capacity dominates and the assembly suits shaft positions where thrust is light and the radial load is heavy for the envelope.

Mounting data:

Effective Center Location: -0.4 in (-10.2 mm), inside the cone backface. Max Shaft Fillet Radius: 0.140 in (3.600 mm). Max Housing Fillet Radius: 0.03 in (0.76 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: 2.99 in (75.95 mm). Cage Location Relative To Backface Aa: 0.07 in (1.8 mm). Cage Location Relative To Frontface Ab: 0.05 in (1.3 mm).

Quantity and configuration:

Unit Quantity: 2 Pcs. One 3577 cone and one 3530 cup, supplied together as a matched single-row assembly.

Interchange guidance:

The 3577 and 3530 numbers are carried across the inch tapered roller programme by SKF, FAG, NSK, NTN, Koyo, Fersa and BCA/Bower at the same size. The Timken 3577 / 3525 uses the same cone with a different cup. MPN Variants: 3577/3530, 3577-3530, 3577, 3530.