Product Specifications
| Parameter |
Details |
| Model NO. |
K75X81X20, K90X98X30, K100X107X21 |
| Product Name |
Needle Roller Bearing |
| Load Direction |
Radial Bearing |
| Style |
Without Outer Ring, Without Inner Ring |
| Material |
Bearing Steel |
| Type |
Closed |
| Lubrication |
Grease or Oil |
| Precision Rating |
P0, P6, P5, P4, P2 |
| Clearance |
C0, C3, C4 |
| Specification |
75*81*20 mm, 90*98*30 mm, 100*107*21 mm |
| Origin |
China |
| HS Code |
8482102000 |
| Production Capacity |
1000000 |
| Delivery Time |
3-7 days |
| Service |
OEM, ODM |
| Transport Package |
Carton, Pallet |
Application Industries
| Industry |
Typical Equipment |
| Industrial Machinery |
Machine Tools, Printing Equipment, Reducers |
| Automotive |
Transmission Systems, Axles |
| Agricultural Machinery |
Harvesters, Tractors, Farm Implements |
| New Energy |
Wind Turbines, Photovoltaic Equipment |
| Home Appliances |
Motors, Pumps, Compressors |
| Construction Machinery |
Excavators, Loaders, Conveyors |
Minimize Downtime with Precision K Series Needle Roller Bearings for Industrial Machinery
Industrial machinery operators know the cost of unexpected downtime—whether from premature bearing failure, delayed replacements, or mismatched parts. When your production line halts due to a failed needle roller bearing, every hour lost translates to missed deadlines and revenue. Sourcing reliable, high-precision bearings that meet your exact specifications shouldn’t add to the stress.
Engineered for Reliable Performance in Critical Machinery
Our K75X81X20, K90X98X30, and K100X107X21 Needle Roller Bearings are designed to address these challenges directly. As an integrated manufacturer with over 15 years of experience, we ensure each bearing meets P0-P4 precision standards, critical for maintaining alignment and reducing vibration in machine tools, printing presses, and reducers. With a 1pc MOQ for standard items and 3-7 days delivery, we eliminate the frustration of large minimum orders and long lead times, keeping your operations running smoothly.
Optimized for High-Load, Low-Friction Industrial Environments
These Radial Bearings Without Outer Ring excel in applications requiring compact design and high radial load capacity. Whether in agricultural machinery like harvesters, where wear resistance is paramount, or in new energy equipment such as wind turbines that demand consistent performance under variable loads, our needle roller bearings deliver. The closed-type design and bearing steel construction ensure durability, while compatibility with both grease and oil lubrication allows flexibility across operating conditions.
Precision and Clearance: Keys to Extended Machinery Life
Precision rating directly impacts machinery performance—our P0-P4 options let you match bearing accuracy to your equipment’s needs. For high-speed machine tools, P4 precision minimizes runout and noise, reducing wear on adjacent components. Clearance options (C0, C3, C4) further optimize performance: C3 clearance suits applications with temperature variations, preventing seizure, while C0 is ideal for standard operating conditions. These technical details aren’t just specifications—they’re the difference between a bearing that lasts 6 months and one that operates reliably for years.
Why Cutting Corners on Bearings Costs More in the Long Run
Low-quality bearings may save money upfront, but they often lead to frequent replacements, unplanned downtime, and even damage to expensive machinery. Our bearings, backed by ISO9001 and ISO14001 certifications, undergo rigorous quality control in our dedicated lab, ensuring consistency batch after batch. The 12-month global warranty and defect replacement policy mean you’re protected against manufacturing issues, reducing total cost of ownership significantly compared to cheaper alternatives.
Your Trusted Partner for Bearing Solutions Since 2005
Jinan Saifan Bearing has served global buyers across Europe, America, Southeast Asia, and the Middle East for over 18 years. Our full R&D capabilities and OEM/ODM customization services mean we can tailor bearings to your unique requirements, from special clearances to custom lubrication. Every order includes free technical guidance, and our responsive after-sales team ensures quick resolution of any issues. With a production capacity of 1,000,000 units annually, we maintain stable supply even for large-volume orders, making us a reliable long-term partner for industrial manufacturers.
Packaging & Shipping
- Secure carton packaging with pallet reinforcement for bulk orders, ensuring bearings arrive undamaged
- 3-7 days delivery for standard items, with expedited options available for urgent requirements
- Flexible shipping via DHL, FedEx, UPS, air freight, or sea freight to match your timeline and budget
- Real-time tracking provided for all shipments, keeping you informed of delivery status
- 1pc minimum order quantity supported, ideal for emergency repairs or small-batch production needs
Get Your Precision Needle Roller Bearings Today
Don’t let bearing issues slow down your production. Whether you need a single K75X81X20 for emergency repair or bulk K100X107X21 bearings for scheduled maintenance, we’re ready to fulfill your order. Send us your bearing model, application details, and quantity, and our team will provide a quote within 24 hours—so you can get back to what matters: keeping your machinery running.
Frequently Asked Questions
Q: Are these needle roller bearings authentic and traceable?
A: Yes, all our bearings are manufactured in-house under strict quality controls and come with full traceability documentation. We hold ISO9001 and ISO14001 certifications, ensuring compliance with international standards.
Q: How do I confirm if the K series bearings will fit my equipment?
A: Provide your equipment model or technical specifications (bore diameter, outer diameter, width, load requirements), and our engineering team will verify compatibility and recommend the optimal precision and clearance等级 for your application.
Q: What is the warranty policy for these bearings?
A: We offer a 12-month global warranty covering manufacturing defects. If a bearing fails due to material or production issues, we provide free replacement or refund.
Q: What is the minimum order quantity for standard bearings?
A: We accept 1pc minimum orders for standard items, making us suitable for both emergency repairs and small-batch purchases.
Q: How quickly can I expect my order to ship?</
Tags:
industrial bearing
K100X107X21 Bearing
K75X81X20 Bearing
K90X98X30 Bearing
needle roller bearing
Needle Roller Bearing for Industrial Machinery
P0-P4 Precision Bearing
Radial Bearing Without Outer Ring
