Timken359S/3525Tapered Roller Bearing Cone and Cup Set – 1.8125 in Bore, 3.4375 in Outside Diameter, 0.9375 in Cup Width, 2 Pcs

Product Description

What this part is:

Timken 359S/3525 single-row inch tapered roller bearing, supplied as a cone and a cup. Cone Part Number: 359-S. Cup Part Number: 3525. Rolling Elements: Tapered Roller. Number Of Rows: 1. Bore Type: Straight. Design Units: Imperial. Bore Diameter: 1.8125 in (46.038 mm). Outside Diameter: 3.4375 in (87.313 mm). Cone Width: 0.8540 in (21.692 mm). Cup Width: 0.9375 in (23.813 mm). Bearing Material: Case-Carburized Steel. Harmonization Code: 8482.20.00.

Decoding the designation:

359 — the cone base number, an inch-series tapered roller cone on a 1.8125 in bore.

S — the cone execution suffix, identifying this variant of the 359 cone within Timken’s inch range.

3525 — the cup number, giving a 3.4375 in outside diameter and a 0.9375 in outer ring width.

Precision Class: Not specified. Timken marks Class 3 with an explicit –3, *3 or #3 and Class 2 with an explicit –2; neither marking is carried here.

What these specs mean in practice:

Dynamic Load Rating (C1): 97,000 N (21,800 lbf). Dynamic Radial Load Rating (C90): 25,100 N (5,650 lbf). Dynamic Axial Rating (Ca90): 13,200 N (2,960 lbf). Static Load Rating: 88,800 N (20,000 lbf).

K Factor: 1.91. The K factor is the ratio of radial to thrust capability; a value near 1.9 places this cone in the shallow-angle group, which carries a high radial share and a moderate thrust share.

e Factor: 0.31. Y Factor: 1.96. These are the cup’s load-zone factors, used to convert a combined radial and thrust load into an equivalent radial load.

Item weight: 1.79 kg (3.95 lb) for the two pieces. Cone Weight: 1.094 kg (2.41 lb). Cup Weight: 0.7 kg (1.7 lb).

Mounting data:

Effective Center Location: –0.19 in (–4.8 mm), measured inside the cone backface.

Max Shaft Fillet Radius: 0.09 in (2.3 mm). Max Housing Fillet Radius: 0.130 in (3.30 mm).

Shaft Backing Shoulder Diameter, frontface (da): 2.01 in (51 mm). Shaft Backing Shoulder Diameter, backface (db): 2.17 in (55 mm).

Housing Backing Shoulder Diameter, frontface (Da): 3.23 in (82.00 mm). Housing Backing Shoulder Diameter, backface (Db): 2.95 in (74.93 mm).

Quantity and configuration:

Cone and cup, 2 Pcs. Unit Quantity: 2 Pcs. The cone carries the inner race, the roller set and the cage; the cup is the outer race. The two seat against one another to form one single-row tapered roller bearing.

Interchange guidance:

The 359S cone and 3525 cup are standard inch tapered roller numbers, and several makers list the same cone and cup numbers: SKF 359-S / 3525, NSK 359S/3525, NTN 4T-359S/3525, Koyo 359S/3525. Maker prefix, markings and tolerance class are set by each maker.

MPN Variants: 359S/3525, 359-S/3525, 359 S 3525, 359S 3525.