Koyo 634-639 Deep Groove Ball Bearings – 2RS/ZZ Sealed, High-Precision Factory Direct
Basic Info.
| Inner Diameter | — |
| Outer Diameter | — |
| Thickness | — |
| Model NO. | 634 635 636 637 638 639 |
| Capacity | 200,000,000 Pieces/Year |
| Origin | China |
Precision ball bearings with high on-time delivery (100%), compliant with global standards. Available in multiple models and sizes, branded by NSK, NTN, NACHI, Timken, and Koyo. HS Code: 8482102000. Packaged in standard industrial packaging.
Basic Info.
- Spherical Roller Bearing
- Taper Roller Bearing
- Alloy Guide Rail
- Thrust Needle Roller Bearing
- Thrust Self-aligning Roller Bearing
- Cylindrical Roller Bearing
- Bearing Block
- Pillow Block Bearing
- Self-Aligning Ball Bearing
- Deep Groove Ball Bearing
- Angular Contact Ball Bearing
- Linear Bearing
- Auto Bearing
- Needle Bearing
- Thrust Ball Bearing
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Specifications
| Bore (mm) | 17 |
| Outer Diameter (mm) | 62 |
| Width (mm) | 17 |
| Lubrication | Grease or Oil |
| Certification | ISO9001:2008 |
| Origin | Germany, Sweden, Japan |
Description
High-quality bearing with precise dimensions (17x62x17mm), suitable for various industrial applications. Reliable performance and durable design ensure long service life under demanding conditions.
Specifications
| Bore Diameter | 30 mm |
| Outer Diameter | 72 mm |
| Width | 19 mm |
| Seals Type | ZZ 2RS Open |
| Precision Rating | P0, P6, P5, P4 |
| Lubrication | Grease or Oil |
Description
Premium quality deep groove ball bearing with reliable performance. Suitable for various industrial applications requiring high precision and durability. OEM/ODM service available.
Specifications
| Bore Diameter | 120mm |
| Outer Diameter | 170mm |
| Width | 28mm |
| Model No. | 6322 |
| Material | Bearing Steel |
| Load Direction | Radial |
Description
Premium radial bearing with model 6322, made of high-quality bearing steel. Designed for reliable performance, it features dimensions of 120x170x28mm and supports radial load applications. Ideal for industrial machinery requiring durable and precise components.
Specifications
| Model No. | 6001 |
| Precision Rating | P0, P6, P5, P4, P2 |
| Vibration | Z1V1, Z2V2, Z3V3 |
| Material | Bearing Steel |
| Feature | High Speed, Low Noise, Long Life |
| Origin | China |
Description
Premium quality deep groove ball bearing with high precision and low vibration. Ideal for high-speed applications requiring reliability and durability. Available in bulk stock with OEM/ODM support.
Specifications
| Bore Diameter | 25 mm |
| Outer Diameter | 62 mm |
| Width | 17 mm |
| Material | Bearing Steel |
| Load Type | Radial |
| Sealed Package | Yes |
Description
Precision radial ball bearings with high durability. Ideal for industrial applications requiring reliable performance under radial loads. Made from high-quality bearing steel with a sealed design for long service life.
Specifications
| Bore Diameter | 10 mm |
| Outer Diameter | 26 mm |
| Width | 8 mm |
| Material | Bearing Steel |
| Load Direction | Radial |
| Sealed Package | Packed |
Description
Precision radial bearing with 10x26x8mm dimensions, made of high-quality bearing steel. Ideal for industrial applications requiring reliable performance. Manufactured by NSK with global production standards.
Specifications
| Model NO. | 6048 6052 6056 6060 6064 |
| Precision Rating | P0, P6, P5, P4, P2 |
| Dimension | 240×350×56 mm |
| Vibration | Z1V1, Z2V2, Z3V3 |
| Material | Bearing Steel |
| Origin | China |
Description
High precision radial bearing with long life, high speed, and low noise performance. Suitable for various industrial applications. Available in multiple models with rich stock and OEM/ODM support.
Specifications
| Bore Diameter | 8 mm |
| Outer Diameter | 22 mm |
| Width | 7 mm |
| Material | Bearing Steel |
| Load Direction | Radial |
| Origin | China |
Description
Precision 608 deep groove ball bearing with radial load capacity, made from high-quality bearing steel. Compact 8x22x7mm design ideal for various industrial and mechanical applications. Sealed and ready for reliable performance.
Specifications
| Bore Diameter | 120mm |
| Outer Diameter | 170mm |
| Width | 28mm |
| Material | Bearing Steel |
| Load Direction | Radial |
| Origin | Germany, Sweden, Japan |
Description
Precision radial bearing with high load capacity. Made of durable bearing steel, suitable for industrial applications requiring reliable performance. Compact design with standard dimensions for easy integration.
Specifications
| Bore Diameter | 120mm |
| Outer Diameter | 170mm |
| Width | 28mm |
| Model No. | 606 604 608 |
| Material | Bearing Steel |
| Origin | Germany/Sweden/Japan |
Description
Premium radial bearing with single row design, made of high-quality bearing steel. Ideal for industrial applications requiring reliable performance and durability. Compact size fits standard housing units.
Specifications
| Model No. | 6311m/C3vl0241 |
| Dimensions (mm) | 120 x 170 x 28 |
| Rows Number | Single |
| Load Direction | Radial Bearing |
| Material | Bearing Steel |
| Trademark | NTN |
Overview
Premium radial bearing with precision engineering. Single-row design made from high-quality bearing steel ensures reliable performance. Ideal for industrial applications requiring durability and smooth operation. Compact size fits standard mounting requirements.
Product Parameters
| Bore Diameter (d): | 240mm |
| Outer Diameter (D): | 320mm |
| Width (B): | 38mm |
| Model No.: | 61948/61952/61956/61960-2RS/2Z/M |
| Material: | Bearing Steel |
| Load Direction: | Radial Bearing |
Description
Premium radial bearing made from high-quality bearing steel, ideal for heavy-duty industrial applications. Compact design with precise dimensions ensures reliable performance and durability. Sealed variants available for enhanced protection.

















