Product Specifications
| Parameter |
Details |
| Model NO. |
676, 677, 678, 679 |
| Product Name |
Deep Groove Ball Bearings |
| Rows Number |
Single |
| Load Direction |
Radial Bearing |
| Material |
Bearing Steel |
| Seals Type |
Zz, 2RS, Open |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Vibration |
Z1V1, Z2V2, Z3V3 |
| Specification |
8*22*7 mm |
| Service |
OEM, ODM |
| Transport Package |
Carton, Pallet |
| HS Code |
8482102000 |
Application Industries
| Industry |
Typical Equipment |
| Industrial Manufacturing |
Reducers, Gearboxes |
| Plastic Processing |
Plastic Mixing Machines |
Prevent Costly Downtime with 676-679 Micro Deep Groove Ball Bearings for Reducers & Plastic Mixing Machines
Many manufacturers face unexpected production halts when standard micro bearings fail prematurely in precision equipment like reducers and plastic mixers. Sourcing reliable high-precision bearings often means navigating minimum order quantities that tie up capital, or waiting weeks for custom specifications. Choosing the wrong bearing can lead to increased noise, reduced efficiency, and frequent replacements—all eating into your bottom line.
Micro Deep Groove Ball Bearings Engineered for Your Exact Needs
Our Micro Deep Groove Ball Bearing 676-679 series solves these challenges with precision-engineered solutions for reducer and plastic mixing machine applications. With over 18 years of bearing manufacturing experience, we offer P0-P4 precision grades and Z1V1-Z3V3 vibration levels to match your equipment’s performance requirements. Whether you need open, Zz shielded, or 2RS sealed variants, our one-stop service covers both standard production and custom modifications based on your drawings.
Optimized Performance in Critical Applications
These micro deep groove ball bearings excel in the demanding conditions of reducers and plastic mixing machines. Operating under radial loads, they maintain stability in high-speed rotational environments while minimizing vibration—critical for consistent material mixing and gearbox efficiency. The 8*22*7 mm specification balances compact design with load capacity, making it ideal for space-constrained industrial equipment where reliability directly impacts production uptime.
Technical Features That Drive Reliability
The precision rating of these bearings directly influences equipment performance: P0 grade suits general industrial use, while P4 precision ensures minimal runout for high-precision reducers. Vibration levels (Z1V1 to Z3V3) are selected based on noise sensitivity—Z3V3 is recommended for plastic mixing machines where quiet operation is essential. Seal options provide flexibility: open bearings offer maximum speed for well-lubricated gearboxes, while 2RS seals protect against dust and moisture in plastic processing environments. Constructed from high-grade bearing steel, these bearings deliver consistent performance even under continuous operation.
Long-Term Value Through Quality Manufacturing
Choosing low-quality micro bearings may seem cost-effective initially, but the hidden costs of frequent replacements, production downtime, and potential equipment damage far outweigh the savings. Our bearings undergo strict incoming material inspection and full-process production supervision, with in-house laboratory testing for dimensional accuracy, noise, vibration, and service life. All products meet ISO, ABMA, and DIN international standards, ensuring compatibility with global equipment specifications. The result is a bearing that lasts longer, performs more consistently, and reduces your total cost of ownership.
Why Industrial Buyers Choose Saifan Bearings
As a professional bearing manufacturer and supplier since 2005, we combine technical expertise with customer-focused service. Our ISO 9001:2015 Quality Management System and ISO 14001 Environmental Management System certifications underscore our commitment to consistent quality. We support flexible order quantities—with 1 piece MOQ for standard bearings—and offer 3-5 working day delivery for sample orders, ensuring you get the parts you need when you need them. Our professional technical team provides free guidance on bearing selection, installation, and maintenance, while our 12-month warranty covers manufacturing defects with free replacements or refunds. With sales across Europe, North America, Southeast Asia, and the Middle East, we’ve built a reputation for reliable supply and responsive support.
Packaging & Shipping
- Carton packaging with pallet reinforcement for bulk orders, ensuring safe transit
- 3-5 working days delivery for sample orders, 5-15 working days for bulk production
- Multiple logistics options including express (DHL, FedEx), air, and sea freight
- Real-time tracking information provided once shipment is dispatched
- 1 piece MOQ for standard bearings, supporting emergency maintenance and small-batch requirements
Secure Your Equipment’s Performance Today
Don’t let bearing failures disrupt your production schedule. Whether you need standard 676-679 bearings or custom modifications, our team can quickly confirm specifications and deliver the right solution. Sending your equipment details and required quantity now means faster processing and earlier shipment—getting your reducers and plastic mixing machines back to peak performance sooner.
Frequently Asked Questions
Q: Are these bearings original and traceable?
A: We manufacture our own bearings to strict quality standards and supply genuine brand bearings (including NSK, INA) through authorized channels. All products come with complete traceability documentation.
Q: How can I confirm if the 676-679 series fits my equipment?
A: Provide your equipment model, operating speed, load requirements, and working environment. Our technical team will verify compatibility and recommend the optimal precision and seal type for your application.
Q: What is your warranty policy for these micro bearings?
A: We offer a 12-month warranty from the date of delivery. Defective products confirmed by our quality inspection will be replaced free of charge with your next order or refunded directly.
Q: What is the minimum order quantity for the 676-679 series?
A: Standard bearings have a 1 piece MOQ, making them suitable for emergency repairs or small-batch production. Customized orders have negotiable quantities based on specifications.
Q: How long does it take to ship after ordering?
A: Sample orders ship within 3-5 working days, while bulk orders typically take 5-15 working days. We’ll confirm the exact lead time when processing your order based on current inventory and production schedule.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
