NSKHR32024XJP5Tapered Roller Bearing Cone and Cup Set — 120 mm Bore, 180 mm OD, 38 mm Width, High-Capacity HR, P5 Precision

Product Description

What this part is

NSK HR32024XJP5, a complete single-row metric tapered roller bearing — cone, roller and cage assembly plus its matched cup. Bore: 120 mm. Outside diameter: 180 mm. Assembled width T: 38 mm. Series: 32000. Precision: P5. Country of origin as recorded: Japan.

Decoding the designation

HR: NSK’s high-capacity execution, an uprated internal geometry within the standard boundary dimensions. 32024X: the ISO metric tapered roller series and size, a steep-angle 320X section. J: pressed steel cage. P5: ISO Class 5 accuracy, ABEC 5 — tighter running and dimensional tolerance than a standard-class bearing, giving closer shaft location and lower runout.

Ratings and speed

Basic dynamic load rating Cr: 297 kN (66,800 lbf). Basic static load rating C0r: 405 kN (91,000 lbf). Limiting speed: 1,800 rpm on grease, 2,400 rpm on oil, 3,400 rpm on mechanical jet lubrication. Axial load factor e: 0.46. Y0: 0.72. Y1: 1.3. Effective load centre a: 39.7 mm. Mass: 3.27 kg.

What these specs mean in practice

The static rating sits above the dynamic rating on this bearing, which is normal for a tapered roller of this section: C0r measures permissible raceway deformation under a stationary load while Cr describes fatigue life in rotation, and the two scale differently. The e factor of 0.46 is the axial-to-radial load ratio at which the thrust component starts to govern the equivalent load calculation. A steep 320X section carries a higher proportion of thrust than a 302 or 303 section of the same bore.

Quantity and configuration

One complete bearing: the cone assembly and its matched cup, supplied together. Tapered rollers are separable by design, so the two halves are matched and ground as a unit.

Fitting notes

Cone width B: 38 mm. Cup width C: 29 mm. Shaft backing shoulder da: 135 mm, db: 131 mm. Housing shoulder Da: 162 to 170 mm, Db: 173 mm. Cage clearance Sa: 7 mm, Sb: 9 mm. Both faces are open. Axial location and running clearance are set at assembly by the shoulder positions rather than built into the bearing.

Interchange guidance

SKF 32024 X and FAG 32024-X share the boundary dimensions and the X section. Both are standard-class bearings, so they are related sizes on precision rather than drop-in equivalents for a P5 requirement. The searchable forms include HR32024XJP5, HR-32024-XJ-P5, HR 32024XJ P5 and 32024X.