Timken47487-90017Tapered Roller Bearing Cone and Cup Assembly – 2.7500 in Bore, 4.7500 in OD, 1.2814 in Width, Inch Series 474

Product Description

What this part is:

Timken 47487-90017 single-row tapered roller bearing assembly, cone and cup together. Bore Diameter: 2.7500 in (69.850 mm). Outside Diameter: 4.7500 in (120.650 mm). Overall Width: 1.2814 in (32.548 mm). Cone Part Number: 47487. Cup Part Number: 47423. Series: 474. Design Units: Imperial. Number Of Rows: 1. Rolling Elements: Tapered Roller. Item weight: 1.50 kg (3.30 lb).

Decoding the designation:

47487 — the cone, the inner ring with its tapered rollers and cage, 2.7500 in bore.

47423 — the cup, the outer ring, 4.7500 in outside diameter.

-90017 — the Timken assembly number for this cone-and-cup pairing, supplied and boxed as one part number.

#0 — an order-code position carried on the carton, recorded here as part of the full designation 47487-90017#0.

What these specs mean in practice:

Dynamic Load Rating: 179,000 N (40,200 lbf), rated at one million revolutions. Static Load Rating: 249,000 N (56,000 lbf). Dynamic radial rating at 90 million revolutions (C90): 46,300 N (10,400 lbf). Dynamic axial rating at 90 million revolutions (Ca90): 28,600 N (6,420 lbf). K Factor: 1.62. e Factor: 0.36. Y Factor: 1.67. Inner Ring Width (B): 1.2813 in (32.545 mm). Outer Ring Width (C): 1.0313 in (26.195 mm). Precision Class: Not specified. The K Factor of 1.62 fixes the ratio of radial to thrust capacity, and the e and Y factors are the equivalent-load constants used to combine a radial and an axial load into one figure for life calculation.

Mounting data:

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): 3.07 in (78 mm). Shaft backing shoulder diameter, backface (db): 3.31 in (84 mm). Housing backing shoulder diameter, frontface (Da): 4.56 in (115.10 mm). Housing backing shoulder diameter, backface (Db): 4.29 in (108.97 mm). Effective Center Location: –0.25 in (–6.4 mm), inside the cone backface. Cage location relative to backface (Aa): 0.07 in (1.8 mm). Cage location relative to frontface (Ab): 0.1 in (2.5 mm).

Quantity and configuration:

Unit Quantity: 1 Pc, one complete assembly. The assembly comprises the 47487 cone and the 47423 cup, the two halves that make up a single-row TS tapered roller bearing. A tapered roller bearing carries thrust in one direction and is normally mounted in an opposing pair.

Interchange guidance:

The assembly designation is 47487-90017, also written 47487-90017#0, 47487/47423 and 47487 47423. The 47487 cone and the 47423 cup are both industry inch numbers, and the pairing is carried as 47487/47423 by SKF, FAG, NTN, Koyo and Fersa.