NSK HR32015XJ is a high-load capacity single-row tapered roller bearing from NSK’s premium HR series, engineered with ISO-standard dimensions (XJ) and optimized raceway geometry. Designed to sustain combined radial and unidirectional axial loads, it delivers exceptional rigidity, wear resistance, and service life for heavy-duty automotive, industrial, and construction machinery operating under severe stress and contamination.
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NSK HR32015XJ is a high-load capacity single-row tapered roller bearing from NSK’s premium HR series, engineered with ISO-standard dimensions (XJ) and optimized raceway geometry. Designed to sustain combined radial and unidirectional axial loads, it delivers exceptional rigidity, wear resistance, and service life for heavy-duty automotive, industrial, and construction machinery operating under severe stress and contamination.
Bore (d): 75 mm (tolerance: −0.010/+0 mm, ISO P0/ABEC 1)
Outer diameter (D): 115 mm (tolerance: 0/+0.018 mm)
Width (T): 25 mm (tolerance: ±0.05 mm)
Chamfer (rmin): 1.5 mm
Weight: 0.91 kg
Dynamic load rating (Cr): 109 kN
Static load rating (C0r): 171 kN
Limiting speed (grease): 3,000 rpm; (oil): 4,000 rpm
Contact angle: ~15°; Precision class: ISO P0 (standard precision)
Inner/outer rings & rollers: SUJ2 (GCr15/100Cr6/AISI 52100) high-carbon chromium bearing steel. Hardness: 60–64 HRC; superior rolling fatigue strength, wear resistance, and dimensional stability under heavy loads.
Cage: Pressed steel (SPCC). Optimized pocket design for stable roller guidance, low friction, and high structural rigidity.
Surface: Black oxide anti-corrosion treatment for enhanced rust protection in harsh environments.
Hot precision forging: Refined grain flow for maximum load-bearing integrity and impact resistance.
CNC turning: Dimensional accuracy ≤ ±0.004 mm, ensuring strict geometric conformity.
Vacuum heat treatment: Uniform martensitic structure, minimal distortion, and consistent hardness distribution.
Profile grinding: Log-convex roller & raceway profiling (Ra ≤ 0.16 μm) to reduce stress concentration.
Superfinishing: Honing process (Ra ≤ 0.05 μm) for ultra-smooth contact surfaces, minimizing friction and wear.
Automated assembly: 100% dimensional & clearance inspection, complying with NSK quality standards.
Standard rating life (L10): 7,000–9,000 hours (ISO 281:2007; 70% Cr radial load, 1,200 rpm, clean NLGI 2 EP grease).
Key influencing factors: Lubrication contamination, operating temperature (-30°C to +120°C), mounting alignment, shaft hardness (≥58 HRC), and preload adjustment.
Automotive: Truck wheel hubs, differential gears, transmission shafts (high load capacity, axial support).
Construction machinery: Excavator components, concrete mixer gearboxes, crane mechanisms (shock load resistance).
Industrial gearboxes: Heavy-duty speed reducers, conveyor drives (combined load handling, rigidity).
Agricultural machinery: Tractor axles, harvester gearboxes (durability in dusty conditions).
Railway: Light rail vehicle components, railcar auxiliary systems (vibration resistance, long life).
Lubricant: NSK LG2 lithium complex grease (NLGI 2) or ISO VG 100–150 extreme-pressure gear oil.
Regreasing interval: 1,000–1,200 hours; 500 hours in heavy dust/moisture.
Grease quantity: 12–15 g (30–35% of internal free space).
Inspection: Every 500 hours; check temperature (<85°C), noise, vibration, and lubricant leakage.
Pre-installation: Clean shaft/housing to Ra ≤ 1.6 μm; inspect for burrs, corrosion, and dimensional accuracy.
Mounting: Hydraulic press (max 100 kN) or induction heating (80–90°C); separate cone/cup mounting.
Alignment: Angular misalignment ≤ 2′ (0.033°); axial runout ≤ 0.006 mm.
Fastening: Lock nut torque: 85–95 Nm (grade 8.8 bolts); preload per NSK standard.
Post-installation: Manual rotation check; temperature rise <35°C above ambient; vibration testing.
| BRAND | FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI |
| BEARINGS NO. | HR32015XJ NSK |
| TYPE | Tapered Roller Bearings |
| Inner(d)mm | 75 |
| Outer(D)mm | 115 |
| Width(B)mm | 25 |
| WEIGHT/KG | 0.9 |
| EAN CODE | 0029176 022982 |
+86-510-6831-3099
No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA
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