
NTN Bearings are high-precision, durable mechanical components manufactured by NTN Corporation, a leading Japanese company in the global bearing industry. Founded in 1918, NTN is known for its innovation and quality in designing and producing rolling bearings, plain bearings, and related components for diverse industries.
🔍 What Are NTN Bearings?
Bearings are mechanical parts that reduce friction between moving parts and support radial and axial loads. NTN produces a wide variety of bearings tailored for high-speed, heavy-load, and high-precision applications.
🧩 Types of NTN Bearings
1. Ball Bearings
Deep Groove Ball Bearings
Most common type.
Handle radial and moderate axial loads.
High-speed capability.
Angular Contact Ball Bearings
Designed for combined axial and radial loads.
Common in electric motors and pumps.
Self-Aligning Ball Bearings
Automatically compensate for shaft misalignment.
2. Roller Bearings
Cylindrical Roller Bearings
High radial load capacity.
Used in gearboxes, compressors.
Tapered Roller Bearings
Can handle radial and axial loads in one direction.
Widely used in automotive hubs and heavy machinery.
Spherical Roller Bearings
Self-aligning and designed for very heavy loads and misalignment.
Suitable for mining, construction, and steel industries.
Needle Roller Bearings
Compact with high load capacity.
Common in automotive and two-wheeler applications.
3. Thrust Bearings
Handle axial loads only.
Available in both ball and roller types.
4. Specialty Bearings
Ceramic Hybrid Bearings (for high-speed and electric motor use).
Insulated Bearings (INSOCOAT) for electric current protection in motors.
Sealed-Clean Bearings for harsh environments like mining.
⚙️ Key Features of NTN Bearings
Feature Description
High Precision Suitable for applications like machine tools and robotics.
Low Friction Helps reduce energy loss and operating temperature.
Long Life Advanced materials and heat treatments extend lifespan.
Sealing Options Available in open, sealed, or shielded types.
Wide Range Sizes from micro bearings to large industrial units.
📦 Applications of NTN Bearings
Automotive (wheel hubs, transmissions, engines)
Industrial Machinery (motors, gearboxes, compressors)
Aerospace
Wind turbines
Railway vehicles
Medical equipment
Agriculture and construction machinery
📊 Example: NTN 6205 Deep Groove Ball Bearing
Specification Value
Bore Diameter 25 mm
Outer Diameter 52 mm
Width 15 mm
Load Rating Dynamic: ~14 kN, Static: ~7.8 kN
Speed Limit ~14, 000 RPM (grease)
Sealing Available in open, ZZ (shielded), and 2RS (sealed)
🧠 Advantages of Using NTN Bearings
✅ Global Availability: Widely supported in over 30 countries.
✅ Custom Engineering: NTN supports custom bearing designs for OEMs.
✅ Advanced Materials: Use of carbonitrided steel and ceramics for longevity.
✅ Energy Efficiency: NTN’s Ultra-Class and EC series help reduce power consumption.
✅ Clean Environment Options: Food-grade and sealed bearings for hygiene-sensitive industries.
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