TimkenHM624749/HM624710#0Tapered Roller Bearing Cone and Cup — 4.7500 in (120.650 mm) Bore, 7.5000 in (190.500 mm) OD, 1.8125 in Width, Class 0

Product Description

What this part is:

Timken HM624749/HM624710#0 is a single-row tapered roller bearing made to precision Class 0: one HM624749 cone and one HM624710 cup. Bore Diameter: 4.7500 in (120.650 mm). Outside Diameter: 7.5000 in (190.500 mm). Overall Width: 1.8125 in (46.038 mm). Cone Width: 1.8125 in (46.038 mm). Cup Width: 1.3750 in (34.925 mm). Item Weight: 4.6 kg (10.20 lb). Precision Class: Class 0. Rolling Elements: Tapered Roller.

Decoding the designation:

HM624749 — Timken inch-series cone in the HM624700 series. HM marks the heavy-medium section.

HM624710 — the matching single cup, 7.5000 in OD.

#0 — Timken precision Class 0, tighter than standard Class 2 and precision Class 3, for machine-tool spindles and other low-runout duty.

What these specs mean in practice:

Dynamic Load Rating: 362,000 N (81,300 lbf), Timken C1 at 1 million revolutions. Dynamic Radial Rating C90: 93,700 N (21,100 lbf). Dynamic Axial Rating Ca90: 68,500 N (15,400 lbf). Static Load Rating: 543,000 N (122,000 lbf). e Factor: 0.43. K Factor: 1.37. Y Factor: 1.41.

Mounting data:

Effective Center Location: -0.15 in (-3.8 mm). Max Shaft Fillet Radius: 0.140 in (3.600 mm). Max Housing Fillet Radius: 0.06 in (1.52 mm). Shaft Backing Shoulder Diameter, Frontface (da): 5.20 in (132 mm). Shaft Backing Shoulder Diameter, Backface (db): 5.43 in (138 mm). Housing Backing Shoulder Diameter, Frontface (Da): 7.28 in (184.90 mm). Housing Backing Shoulder Diameter, Backface (Db): 6.85 in (173.99 mm).

Quantity and configuration:

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

Interchange guidance:

HM624749/HM624710 is an ABMA standard inch set also produced by SKF, NTN (4T-HM624749/HM624710), Koyo and Bower; Class 0 is a Timken precision grade on the same envelope.