Timken42346-3/42587-3Tapered Roller Bearing Cone and Cup — 3.4630 in (87.960 mm) Bore, 5.8750 in (149.225 mm) OD, 1.2500 in Width, Class 3

Product Description

What this part is

Timken 42346-3/42587-3 is a single-row tapered roller bearing made to precision Class 3: one 42346 cone and one 42587 cup. Bore Diameter: 3.4630 in (87.960 mm). Outside Diameter: 5.8750 in (149.225 mm). Overall Width: 1.2500 in (31.750 mm). Cone Width: 1.1406 in (28.971 mm). Cup Width: 0.9688 in (24.608 mm). Item Weight: 2.10 kg (4.7 lb). Precision Class: Class 3. Rolling Elements: Tapered Roller.

Decoding the designation

42346 — Timken inch-series cone in the 42300 series, 3.4630 in bore.

42587 — the matching single cup, 5.8750 in OD.

-3 — Class 3 precision: tighter bore, OD, width and runout tolerances than standard Class 2 for smoother, lower-vibration running.

What these specs mean in practice

Dynamic Load Rating: 193,000 N (43,400 lbf), Timken C1 at 1 million revolutions. Dynamic Radial Rating C90: 50,100 N (11,300 lbf). Dynamic Axial Rating Ca90: 42,200 N (9,480 lbf). Static Load Rating: 241,000 N (54,300 lbf). e Factor: 0.49. K Factor: 1.19. Y Factor: 1.22.

Mounting data

Effective Center Location: 0.12 in (3 mm). Max Shaft Fillet Radius: 0.120 in (3 mm). Max Housing Fillet Radius: 0.130 in (3.30 mm). Shaft Backing Shoulder Diameter, Frontface (da): 3.86 in (98 mm). Shaft Backing Shoulder Diameter, Backface (db): 4.06 in (103 mm). Housing Backing Shoulder Diameter, Frontface (Da): 5.64 in (143.26 mm). Housing Backing Shoulder Diameter, Backface (Db): 5.28 in (134.11 mm).

Quantity and configuration

Unit Quantity: 2 Pcs, one cone and one cup forming one complete single-row bearing.

Interchange guidance

42346/42587 is an ABMA standard inch set also produced by SKF, NTN (4T-42346/42587), Koyo and Bower; Class 3 is a Timken precision grade on the same envelope. The 42346 cone also mates the 42587D double cup.