TimkenHM959710Tapered Roller Bearing Single Cup – 19.6830 in Cup Outer Diameter, 2.5000 in Cup Width, Series HM959700, Case-Carburized Steel.

Product Description

What this part is

Timken HM959710 inch tapered roller bearing single cup — the outer race of a large-bore tapered roller bearing. Brand: Timken. Manufacturer Part Number: HM959710. Series: HM959700. Base Number: HM959710. Outside Diameter: 19.6830 in (499.948 mm). Overall Width: 2.5000 in (63.500 mm). Item Weight: 147.4 kg (325 lb). Bearing Material: Case-carburized steel. Rolling Elements: Tapered Roller. Number Of Rows: 1. Closure Type: Open. Unit Quantity: 1 Pc.

Decoding the designation

HM959710 — Timken inch cup number. The trailing 10 marks the cup within the HM959700 series.

HM959700 — the series that groups this cup with its mating cones, so raceway angle and roller path are matched across the series.

What these specs mean in practice

K Factor: 0.67. e Factor: 0.87. Y Factor: 0.69. K is the ratio of radial to thrust capacity and comes straight from the cup angle; e and Y set the load split used to convert combined radial and thrust load into an equivalent radial load. A K of 0.67 with an e of 0.87 puts this cup in the steep-angle part of the inch range, where thrust capacity is high relative to radial.

Item Weight: 147.4 kg (325 lb). Outside Diameter: 19.6830 in (499.948 mm). A cup at this size and mass runs in heavy sections — mill roll necks, large gearboxes, crane and excavator swing drives, and marine and mining reducers.

Mounting data

Max Housing Fillet Radius: 0.250 in (6.40 mm). Housing Backing Shoulder Diameter – Backface (Db): 17.40 in (442.00 mm). The cup presses into the housing bore and seats against the shoulder. The fillet figure is the largest corner radius in the housing that the cup corner clears.

Quantity and configuration

Cup only. Unit Quantity: 1 Pc. It runs against HM959700-series cones, including the HM959740DW and HM959738DW double cones used in Timken TDI two-row assemblies.

Interchange guidance

HM959710 is an industry-standard inch tapered roller bearing cup number. SKF, FAG, NSK, NTN, Koyo, Bower/BCA and Tyson build to the same envelope under the same designation. NTN prefixes its case-carburized inch range 4T-, giving 4T-HM959710. Raceway angles are matched within a series, so this cup runs against an HM959700-series cone.

Searchable variants

HM959710, HM-959710, HM 959710, HM959710 cup, HM959710 race.