Stainless steel bearing manufacturer | Flanged Ball Bearings Manufacturer|Yongnuo Bearing
The NKMB 697ZZ / 697-2RS miniature deep groove ball bearing is designed for applications that demand high precision, low noise, and reliable performance in compact spaces. With a standard size of 7 × 17 × 5 mm, this bearing is widely used in small motors, precision instruments, power tools, and automation equipment. As a professional bearing manufacturer, NKMB provides stable quality, strict dimensional control, and consistent performance for global markets.
1. NKMB 697ZZ / 697-2RS Bearing Specifications
| Parameter | Description |
|---|---|
| Bearing Model | 697ZZ / 697-2RS |
| Bearing Type | Miniature Deep Groove Ball Bearing |
| Brand | NKMB |
| Inner Diameter (ID) | 7 mm |
| Outer Diameter (OD) | 17 mm |
| Width | 5 mm |
| Structure | Single row |
| Load Direction | Radial (limited axial load) |
| Cage Material | Steel / Stainless Steel (optional) |
| Ring Material | Bearing Steel (GCr15) / Stainless Steel (optional) |
| Ball Material | Chrome Steel / Stainless Steel |
| Seal Type | ZZ (Metal Shields) / 2RS (Rubber Seals) |
| Lubrication | Pre-greased |
2. Difference Between 697ZZ and 697-2RS
🔹 697ZZ (Metal Shielded)
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Low friction and high-speed capability
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Dust protection for clean or semi-clean environments
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Suitable for electric motors and precision devices
🔹 697-2RS (Rubber Sealed)
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Better sealing performance
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Resistant to moisture and light contamination
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Ideal for longer service life and harsh working conditions
3. Precision, Noise & Clearance
| Item | NKMB Standard |
|---|---|
| Precision Grade | ABEC-1 (P0), optional ABEC-3 / ABEC-5 |
| Radial Clearance | C0 (Normal), optional C3 |
| Noise Level | Z1 / Z2 (Low Noise) |
| Vibration Level | V1 / V2 |
NKMB strictly controls roundness, raceway finish, and ball grade, ensuring smooth rotation and ultra-low vibration.
4. Load Capacity & Speed
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Dynamic Load Rating: Suitable for light to medium loads
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Static Load Rating: Stable under intermittent loads
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Maximum Speed:
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697ZZ: Higher speed capability
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697-2RS: Slightly lower due to rubber seals
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(Exact values available upon request from NKMB technical support)
5. Operating Temperature & Service Life
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Operating Temperature Range:
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Standard grease: -30°C to +120°C
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Service Life:
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Long-lasting performance with proper installation and lubrication
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2RS version offers extended life in contaminated environments
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6. Typical Applications of NKMB 697 Bearings
The NKMB 697ZZ / 697-2RS bearings are widely used in:
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Miniature electric motors
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Power tools
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Office equipment
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Medical devices
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Robotics & automation systems
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Hobby motors & RC models
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Precision instruments
7. Why Choose NKMB 697ZZ / 697-2RS Bearings?
✅ Stable quality and strict inspection
✅ Low noise and smooth rotation
✅ High consistency for mass production
✅ OEM & ODM support available
✅ Competitive pricing with factory supply
NKMB is committed to delivering reliable miniature bearing solutions for customers worldwide.
Conclusion
The NKMB 697ZZ / 697-2RS miniature deep groove ball bearing offers an excellent balance of precision, durability, and cost efficiency. Whether you need high-speed performance or enhanced sealing, NKMB provides the right solution for your application.
For technical support, bulk orders, or customized bearings, contact NKMB today.
