Ningbo Kent Bearing Co., Ltd
| Payment Terms | L/C,D/A,D/P,T/T,Western Union |
| Supply Ability | 30,000,000 pcs per year |
| Delivery Time | Negotiable |
| Packaging Details | Single Packing, Industrial/Tube Packing, Custom Packing |
| Oem Service | Customization Welcomed |
| Bearing Material | Chrome Steel |
| Cage Type | Steel |
| Bearing Life | Up to 10 years |
| Size | Standard |
| Samples | Available |
| Stock | Rich |
| Brand Name | BUGAO |
| Model Number | 628 ZZ |
| Certification | ISO 9001:2015 |
| Place of Origin | Ningbo, China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union | Supply Ability | 30,000,000 pcs per year |
| Delivery Time | Negotiable | Packaging Details | Single Packing, Industrial/Tube Packing, Custom Packing |
| Oem Service | Customization Welcomed | Bearing Material | Chrome Steel |
| Cage Type | Steel | Bearing Life | Up to 10 years |
| Size | Standard | Samples | Available |
| Stock | Rich | Brand Name | BUGAO |
| Model Number | 628 ZZ | Certification | ISO 9001:2015 |
| Place of Origin | Ningbo, China | ||
| High Light | 10 years life Spherical Bearings ，Mechanical Equipment Spherical Bearings ，UC206 Spherical Bearings | ||
The 628 ZZ is an ultra-quiet, double-shielded deep groove ball bearing specifically designed for noise-sensitive household appliances. With 8×24×8 mm (ID×OD×W) dimensions, this bearing delivers virtually silent operation (<15 dB) while maintaining long service life in washing machines, refrigerators, air purifiers, and small kitchen appliances.
Engineered with special noise-dampening technology, it features precision-polished raceways and optimized cage designs to eliminate operational sounds. The dual metal shields (ZZ) provide lifetime lubrication retention while preventing dust ingress in appliance environments.
| Parameter | Specification |
|---|---|
| Model | 628 ZZ |
| Type | Deep Groove Ball Bearing |
| Dimensions | 8×24×8 mm (ID×OD×W) |
| Material | Chrome Steel (GCr15) / Optional Stainless Steel (SUS420) |
| Shield Type | Double Metal Shields (ZZ) |
| Clearance | C2 (Tighter than standard) |
| Precision Grade | ABEC-5 (Special Silent Grade) |
| Dynamic Load | 4.2 kN |
| Static Load | 2.0 kN |
| Max Speed | 12,000 RPM (Grease) |
| Noise Level | <15 dB at 1,500 RPM |
| Temperature Range | -30°C to +150°C |
| Lubrication | Special Silent Grease (NSF H1 certified) |
| L10 Life | 30,000 hours @ 1,800 RPM |
✔ Whisper-Quiet Operation – <15 dB noise level for silent homes
✔ Vibration Control – Precision-balanced for smooth appliance performance
✔ Appliance-Grade Lubricant – NSF H1 food-safe grease option available
✔ Dual Protection – ZZ shields prevent lint/dust ingress in laundry apps
✔ Corrosion-Resistant – Optional stainless steel for humid environments
Company Details
Business Type:
Manufacturer
Year Established:
2003
Ecer Certification：
Verified Supplier
We are Ningbo Kent Bearing Co., Ltd, one of the leading high-quality bearing manufacturer and supplier, established in 2003. We registered the BUGAO Bearing trademark in 2003 and specialize in deep groove ball bearings for electric motors, automobiles, household appliances, power tools, ... We are Ningbo Kent Bearing Co., Ltd, one of the leading high-quality bearing manufacturer and supplier, established in 2003. We registered the BUGAO Bearing trademark in 2003 and specialize in deep groove ball bearings for electric motors, automobiles, household appliances, power tools, ...
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