Product Specifications
| Parameter |
Details |
| Model NO. |
21305 |
| Feature |
Long Life, High Speed, Low Noise |
| Specification |
25x62x17mm |
| HS Code |
8482300000 |
| Production Capacity |
500000 |
| Package Size |
12.00cm * 12.00cm * 15.00cm |
| Package Gross Weight |
1.500kg |
Application Industries
| Industry |
Typical Equipment |
| Industrial Manufacturing |
Gearboxes, Reducers, Conveyors |
| Automotive |
Transmission Systems, Car Components |
| General Machinery |
Electric Fans, Pumps, Compressors |
Reduce Gearbox Downtime with 21305 Spherical Roller Bearing
Unexpected gearbox failures disrupt production schedules and increase maintenance costs. Many operations struggle with bearings that fail prematurely under high-speed conditions or lack the durability to handle continuous industrial use. Sourcing reliable bearings with flexible order options often adds another layer of complexity for maintenance teams and procurement managers.
Genuine Spherical Roller Bearings for Critical Applications
The Spherical Roller Bearing 21305 addresses these challenges with its optimized design for high-speed performance and extended service life. With dimensions 25x62x17mm, this bearing is engineered to fit seamlessly into gearboxes, automotive transmissions, and industrial fans—key components where reliability directly impacts operational efficiency. Our decades of bearing manufacturing experience ensure each unit meets strict quality standards, supported by flexible order policies including 1 piece MOQ for standard products and sample availability to verify compatibility before full deployment.
Engineered for High-Speed, Heavy-Duty Conditions
This Spherical Roller Bearing 21305 excels in applications requiring both high rotational speeds and robust load handling. Its low noise operation (Z2/Z3/Z4 grade) makes it suitable for precision machinery, while the long-life feature reduces the need for frequent replacements. Whether operating in automotive gearboxes subject to variable loads or industrial fans running continuous cycles, this bearing maintains stable performance under demanding conditions, minimizing unplanned downtime.
Technical Advantages That Deliver Reliability
The 21305 bearing’s performance is defined by critical technical attributes. Its 25mm bore diameter and 62mm outer diameter balance compactness with load capacity, making it ideal for gearbox installations where space is constrained. The 17mm width provides sufficient contact area to distribute radial and axial loads effectively, enhancing durability. Manufactured with high-grade chrome steel and premium raw materials, as part of our mature production technology, it ensures consistent performance even in high-speed applications—aligning with our commitment to precision manufacturing from P0 to P4 accuracy grades.
Why Authentic Bearings Matter for Total Cost of Ownership
Choosing genuine bearings like the 21305 Spherical Roller Bearing avoids the hidden costs of counterfeit products. Inferior bearings often fail early, leading to production line shutdowns, expensive repairs, and potential damage to adjacent components. Our products meet ISO, ABMA, and DIN international standards, backed by ISO 9001:2015 quality certification, ensuring reliability that reduces long-term maintenance expenses. The 12-month warranty further protects your investment, providing free replacement or refund for qualified defective products—delivering peace of mind that generic alternatives cannot match.
Your Trusted Bearing Partner Since 2005
With over 18 years of industry experience, Jinan Saifan Bearing Co., Ltd combines manufacturing expertise with global supply capabilities. Our integrated service covers independent R&D, mass production, and global sales, supported by a professional technical team offering free guidance on selection, installation, and maintenance. We maintain strict quality control through incoming raw material inspection, in-house laboratory testing, and unified finished product checks. Serving customers across Europe, North America, Southeast Asia, and the Middle East, we ensure efficient delivery—3-5 working days for samples and 5-15 days for bulk orders—with multiple secure payment options including T/T, Credit Card, and Alibaba platform transactions.
Packaging & Shipping
- Secure carton and pallet packaging to prevent damage during transit
- Sample orders shipped within 3-5 working days; bulk orders within 5-15 working days
- Flexible logistics options including express, air, and sea freight
- Real-time tracking provided for all shipments
- 1 piece MOQ for standard bearings, ideal for emergency repairs or small-scale projects
Get Your 21305 Bearing Shipped Today
Don’t let equipment downtime affect your productivity. Whether you need a single replacement bearing or bulk quantities for planned maintenance, we ensure prompt delivery and reliable performance. Contact us with your order details, and our team will assist with technical verification and pricing—helping you get back to seamless operation quickly.
Frequently Asked Questions
Q: Is this a genuine Spherical Roller Bearing 21305?
A: Yes, we supply genuine bearings manufactured to international standards, with full traceability and compliance with ISO 9001:2015 quality management system.
Q: How can I confirm if this bearing fits my gearbox?
A: Provide your gearbox model or specific application requirements, and our technical team will verify compatibility based on dimensions (25x62x17mm) and performance parameters.
Q: What is the warranty period for this bearing?
A: We offer a 12-month warranty from the date of delivery, covering manufacturing defects with free replacement or refund options.
Q: What is the minimum order quantity?
A: Standard bearings have a 1 piece MOQ, allowing for emergency repairs or small orders. Customized orders have negotiable quantities.
Q: How long does shipping take?
A: Sample orders ship within 3-5 working days, while bulk orders take 5-15 working days. Logistics options include express, air, and sea freight.
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