The NSK HR30215J Tapered Roller Bearing is a high-performance, single-row tapered roller bearing engineered for combined radial and axial load support in demanding mechanical and automotive applications. It features a robust tapered roller design that delivers high load capacity, durability, and stable rotation.
Product Overview
Tapered roller bearings are designed so the rollers and raceways form a tapered geometry that allows them to carry high radial loads and significant axial thrust loads in one direction. The HR30215J model is part of NSK’s metric series and conforms to ISO standards, making it interchangeable with other metric tapered roller bearings in the same series.
This bearing is ideal where load distribution, rigidity, and long service life are critical.
Technical Specifications
| Specification |
Detail |
| Brand |
NSK |
| Part Number |
HR30215J |
| Bearing Type |
Single-Row Tapered Roller Bearing |
| Inner Diameter (d) |
75 mm
|
| Outer Diameter (D) |
130 mm
|
| Width (T) |
27.25 mm
|
| Inner Ring Width (C) |
22 mm
|
| Outer Ring Width (B) |
25 mm
|
| Basic Dynamic Load Rating (Cr) |
143,000 N
|
| Basic Static Load Rating (C0r) |
182,000 N
|
| Limiting Speed (Grease) |
2,800 rpm
|
| Limiting Speed (Oil) |
3,800 rpm
|
| Mass (Approx.) |
~1.43 kg
|
| Number of Rows |
Single Row
|
| Condition |
Brand New |
| Origin |
NSK OEM Quality |
This tapered roller bearing uses a steel cage and steel rollers, suitable for high-load applications requiring stable performance and durability.
Key Features & Benefits
✔ Tapered Roller Geometry – Designed to handle combined radial and axial loads in one direction with excellent load distribution.
✔ Robust Load Ratings – High dynamic and static load capacities for demanding applications.
✔ ISO Metric Design – Conforms to global standards for interchangeability and engineering compatibility.
✔ Durable Construction – Steel components built for long service life under heavy loads.
✔ Versatile Installation – Can be used in paired arrangements (back-to-back, face-to-face, or tandem) for axial load support in both directions.
Typical Uses & Applications
Tapered roller bearings like HR30215J are widely used in systems where robust load carrying and rotational stability are essential:
🚗 Automotive & Vehicle Systems
-
Wheel hub and axle assemblies
-
Transmission input/output shafts
-
Differential and pinion bearings
-
Steering knuckle and suspension pivots
🏭 Industrial & Mechanical Equipment
-
Gearboxes and reducers
-
Heavy machinery drive shafts
-
Conveyors and material handling
-
Agricultural and construction equipment
These bearings are chosen when machines and vehicles operate under high load, speed variation, and axial thrust conditions.
⚠ To match to a specific vehicle make/model/year, check your OEM bearing code or original bearing dimensions (75×130×27.25 mm) in the vehicle’s parts manual — vehicles do not usually list a generic size like “HR30215J” directly. This ensures proper fitment for shaft/housing tolerances.
Related Brand & Equivalent Part Numbers
Here are some dimension-matched equivalents from other reputable bearing makers (same 75×130×27.25 mm size):
-
SKF: 30215 (metric tapered roller bearing)
-
FAG: 30215 tapered roller bearing
-
TIMKEN: 30215 series tapered bearings
-
NSK / KOYO: Comparable 30215 metric sizes
⚠ Always confirm dimension match and load specs before substituting between brands.
Fitment & Installation Tips
✔ Pairing: Tapered bearings are often paired (e.g., back-to-back) to support axial loads in both directions.
✔ Preload: Correct preload/clearance improves life and performance.
✔ Dimension Match: Confirm bore/outer/width match for your application before ordering.
✔ Lubrication: Use proper grease or oil for best performance and bearing life.
