HR32206J NSK

Tapered Roller Bearings HR32206J NSK

NSK HR32206J is a high-performance single-row tapered roller bearing from NSK's premium HR series, engineered for exceptional combined radial and unidirectional axial load capacity. Featuring ISO-standard precision, optimized roller geometry, and robust structural design, it delivers superior durability, stiffness, and reliability for heavy-duty automotive, agricultural, and industrial machinery applications demanding stable operation under extreme loads.

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NSK HR32206J is a high-performance single-row tapered roller bearing from NSK's premium HR series, engineered for exceptional combined radial and unidirectional axial load capacity. Featuring ISO-standard precision, optimized roller geometry, and robust structural design, it delivers superior durability, stiffness, and reliability for heavy-duty automotive, agricultural, and industrial machinery applications demanding stable operation under extreme loads.
1. Dimension Parameters (ISO 492 & JIS B 1521 Standard)NSK
- Bore (d): 30 mm (tolerance: −0.008/+0 mm, P0/ABEC 1)
- Outer diameter (D): 62 mm (tolerance: 0/+0.014 mm)
- Total width (T): 21.25 mm; Cone width (B): 20 mm; Cup width (C): 17 mm
- Chamfer (rmin): 1.0 mmNSK
- Weight: 0.297 kg
- Dynamic load rating (Cr): 52 kN; Static load rating (C0r): 60 kN
- Limiting speed (grease): 6,000 rpm; (oil): 8,500 rpm
- Contact angle: ≤17°; Precision class: ISO P0 (standard precision)
2. Material Specification
- Inner/outer rings & rollers: SUJ2 (GCr15/100Cr6/AISI 52100) high-carbon chromium bearing steel. Hardness: 60–64 HRC; exceptional rolling fatigue strength, wear resistance, and dimensional stability under heavy loads.
- Cage: Pressed steel (SPCC). Optimized pocket design for precise roller guidance, low friction, and high-speed stability.
- Surface: Black oxide anti-corrosion treatment for enhanced rust protection in harsh environments.
3. Core Manufacturing Process
- Hot precision forging: Refined grain flow for maximum structural integrity and load resistance.
- CNC turning: Dimensional accuracy ≤ ±0.003 mm, ensuring tight geometric conformity.
- Vacuum heat treatment: Uniform martensitic structure, minimal distortion, 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, ensuring NSK quality standards.
4. Service Life
- Standard rating life (L10): 8,000–10,000 hours (ISO 281:2007; 70% Cr radial load, 1,500 rpm, clean NLGI 2 grease).
- Key influencing factors: Lubrication contamination, operating temperature (-30°C to +140°C), mounting alignment, shaft hardness (≥58 HRC), and preload adjustment.
5. Applications & Industries
- Automotive: Vehicle wheel hubs, differential gears, transmission shafts (high load capacity, unidirectional axial support).
- Agricultural machinery: Tractor axles, harvester gearboxes, farm equipment (heavy shock load resistance).
- Construction machinery: Small excavator components, concrete mixer parts (durability under harsh conditions).
- Industrial gearboxes: Speed reducers, conveyor drives (combined load handling, high stiffness).
- Railway & marine: Light rail components, ship auxiliary machinery (corrosion resistance, long service life).
6. Maintenance & Lubrication
- Lubricant: NSK LG2 lithium complex grease (NLGI 2) or ISO VG 68–100 extreme-pressure gear oil.
- Regreasing interval: 1,200–1,500 hours; 500 hours in heavy dust/moisture conditions.
- Grease quantity: 4.5–5.0 g (30–35% of internal free space).
- Inspection: Every 500 hours; check operating temperature (<85°C), noise, vibration, and lubricant leakage.
7. Installation Guidelines
- Pre-installation: Clean shaft/housing to Ra ≤ 1.6 μm; inspect for burrs, corrosion, and dimensional accuracy.
- Mounting: Hydraulic press (max 50 kN) or induction heating (80–90°C); separate cone/cup mounting allowed.
- Alignment: Angular misalignment ≤ 2′ (0.033°); axial runout ≤ 0.005 mm.
- Fastening: Lock nut torque: 45–55 Nm (grade 8.8 bolts); preload adjustment per NSK standard.
- Post-installation: Manual rotation check; temperature rise <35°C above ambient; vibration testing for abnormal noise.

BRAND	FONKIN/SKF/FAG/INA/NSK/NTN/TIMKEN/SNR/IKO/KOYO/ASAHI/FYH/THK/HIWIN/PMI
BEARINGS NO.	HR32206J NSK
TYPE	Tapered Roller Bearings
Inner(d)mm	30
Outer(D)mm	62
Width(B)mm	21.25
WEIGHT/KG	0.28
EAN CODE	0029176 001161

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+86-510-6831-3099

E-mail

fonkin-industries@188.com

Address

No.105, Huixin Road,Yuqi Industrial Park, Huishan District, hunqi Road, Yuqi Town, Wuxi, Jiangsu Province, P.R.CHINA

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