High Quality 632-639 Ball Bearings – NSK NTN Koyo
Specifications
| Bore Diameter | Varies by model |
| Outer Diameter | Varies by model |
| Width | Varies by model |
| Model No. | 632-639 |
| Origin | China |
| Trademark | NTN, NSK, TIMKEN, KOYO |
Description
High-quality bearings available in multiple models (632-639) with varying inner, outer diameters and thickness. Ideal for industrial applications, packed in standard export packaging.
Basic Info.
- Needle Bearing
- Cylindrical Roller Bearing
- Auto Bearing
- Thrust Needle Roller Bearing
- Linear Bearing
- Angular Contact Ball Bearing
- Alloy Guide Rail
- Deep Groove Ball Bearing
- Plain Bearing
- Spherical Roller Bearing
- Auto Air Conditioning Compressor
- Taper Roller Bearing
- Spherical Plain Bearing
- Thrust Ball Bearing
- Self-Aligning Ball Bearing
- Thrust Self-aligning Roller Bearing
- Pillow Block Bearing
Related Products
Specifications
| Bore Diameter | 20mm |
| Outer Diameter | 42mm |
| Thickness | 12mm |
| Model No. | 6004-2RS |
| Material | Bearing Steel |
| Seals | 2RS (Double Sealed) |
Description
Premium radial ball bearing with 20x42x12mm dimensions, made of high-quality bearing steel. Features double rubber seals (2RS) for enhanced dust and moisture protection. Ideal for industrial and mechanical applications requiring reliable performance.
Specifications
| Bore Diameter | 25 mm |
| Outer Diameter | 37 mm |
| Thickness | 7 mm |
| Model No. | 6805zz |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Overview
Precision radial bearing with high speed, low noise, and long life performance. Ideal for industrial applications requiring reliability and durability. Available in bulk stock with OEM/ODM support.
Specifications
| Bore Diameter | 17 mm |
| Outer Diameter | 23 mm |
| Width | 4 mm |
| Clearance | C0/C2/C3 |
| Precision Rating | P0, P6, P5, P4 |
| Lubrication | Grease or Oil |
Description
High-speed, low-noise radial bearing made of bearing steel. Features long service life, non-aligning design, and single-row structure. Suitable for various industrial applications with OEM/ODM support. Rich stock available for fast delivery.
Specifications
| Bore Diameter | 75 mm |
| Outer Diameter | 95 mm |
| Thickness | 10 mm |
| Model NO. | 6815zz |
| Material | Bearing Steel |
| Origin | Japan |
Description
High-speed, low-noise radial bearing with long service life. Made of high-quality bearing steel, suitable for precision applications. Available in various clearance options (C0/C2/C3) and lubrication types. Ideal for OEM/ODM use.
Specifications
| Bore Diameter | 20 mm |
| Outer Diameter | 42 mm |
| Thickness | 12 mm |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
| Precision Rating | P0, P6, P5, P4, P2 |
Description
High-precision 6004-2RS deep groove ball bearing with dust seals on both sides. Made from high-quality bearing steel for durability and long service life. Suitable for radial loads in various industrial applications.
Product Parameters
| Bore Diameter | 150 mm |
| Outer Diameter | 225 mm |
| Width | 35 mm |
| Model NO. | 6030-2RS |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Description
High precision radial bearing with non-aligning design, suitable for heavy-duty applications. Made of high-quality bearing steel, ensuring durability and performance under various load conditions.
Specifications
| Bore Diameter | 50 mm |
| Outer Diameter | 80 mm |
| Width | 16 mm |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Origin | China |
Description
Precision radial bearing with 50x80x16 mm dimensions, made of high-quality bearing steel. Ideal for industrial applications requiring reliable performance. Available with OEM/ODM service.
Specifications
| Bore Diameter | 10 mm |
| Outer Diameter | 22 mm |
| Width | 6 mm |
| Clearance | C0/C2/C3 |
| Precision Rating | P0, P6, P5, P4 |
| Lubrication | Grease or Oil |
Description
High-quality NSK radial bearing with long life, low noise, and high-speed performance. Made of bearing steel, it is ideal for various industrial applications. Non-aligning, unseparated design ensures reliable operation under radial loads. Rich stock available for immediate delivery.
Specifications
| Bore Diameter | 60 mm |
| Outer Diameter | 95 mm |
| Thickness | 18 mm |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Description
Premium radial bearing with high precision ratings (P0-P2), suitable for industrial applications requiring reliability and performance. Made from durable bearing steel, it supports radial loads efficiently.
Specifications
| Bore Diameter | 25 mm |
| Outer Diameter | 42 mm |
| Thickness | 9 mm |
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4 |
| Lubrication | Grease or Oil |
Overview
High-quality 6905ZZ deep groove ball bearing with long life, low noise, and high-speed performance. Suitable for various industrial applications. Rich stock available for immediate delivery.
Specifications
| Model No. | 6022-2RS |
| Dimensions (mm) | 110 x 170 x 28 |
| Precision Rating | P0, P6, P5, P4, P2 |
| Lubrication | Grease or Oil |
| Material | Bearing Steel |
| Load Direction | Radial Bearing |
Description
High-performance deep groove ball bearing with dust seals on both sides, suitable for high-speed and precision applications. Made from high-quality bearing steel, it ensures durability and reliability under radial loads.
Specifications
| Bore Diameter | 90 mm |
| Outer Diameter | 190 mm |
| Width | 43 mm |
| Model NO. | 6318ZZ |
| Material | Bearing Steel |
| Lubrication | Grease or Oil |
Description
The KOYO 6318ZZ deep groove ball bearing offers high precision, long life, and low noise operation. Ideal for radial loads, it supports high-speed applications with C0/C2/C3 clearance options and is available in rich stock for immediate delivery.

















