Needle Roller Bearings
Keep your industrial machinery running smoothly with the Bolt Type Wheel Roller Needle Cam Bearing KR30-KR47—designed to deliver high-speed performance with minimal noise, ensuring uninterrupted operation and reduced downtime. Crafted from premium bearing steel and available in precision grades P0-P4 with vibration levels Z1-Z4, this Bolt Type Wheel Roller Bearing balances durability and precision for demanding cam applications.
MOQ
1 Piece
Sample Lead Time
3-5 Days
Bulk Lead Time
5-15 Days
Warranty
12 Months
| Parameter | Details |
|---|---|
| Model NO. | KR30, KR32, KR35, KR40, KR47 |
| Material | Bearing Steel |
| Precision Rating | P0, P6, P5, P4 |
| Vibration Level | Z1, Z2, Z3, Z4 |
| Feature | Long Life, High Speed, Low Noise |
| Service | OEM, ODM |
| Transport Package | Carton, Pallet |
| Origin | China |
| HS Code | 8482102000 |
| Production Capacity | 1,000,000 units/year |
| Industry | Typical Equipment |
|---|---|
| Industrial Machinery | Machine Tools, Printing Presses, Reducers, Conveyors |
| Automotive | Transmission Systems, Steering Mechanisms |
| New Energy | Wind Turbine Components, Solar Panel Manufacturing Equipment |
| Agriculture | Harvesters, Tractors, Farm Machinery |
| Home Appliances | High-Speed Motors, Precision Rotating Parts |
Industrial machinery operators often face unexpected production halts due to bearing failures, especially in high-speed applications where precision and durability are critical. Sourcing reliable low-noise bearings with flexible order options can be challenging, leading to extended lead times and increased operational costs. Many struggle to find a balance between performance, cost, and customization for specialized cam and wheel applications.
Our Bolt Type Wheel Roller Needle Cam Bearing KR30-KR47 series addresses these challenges by offering long life, high-speed rotation, and low noise operation—key requirements for industrial machinery. As an integrated manufacturer with full R&D capabilities and ISO9001 certification, we ensure consistent quality across all production batches. Whether for machine tool spindles, printing presses, or conveyor systems, these bearings deliver reliable performance with the flexibility of OEM/ODM customization to meet specific application needs.
Designed specifically for industrial machinery, the KR series excels in high-speed cam mechanisms and wheel assemblies where precision and low vibration are essential. These needle roller bearings accommodate radial loads while maintaining stable operation at elevated rotational speeds, making them ideal for continuous-duty equipment. The bolt type design simplifies installation and replacement, reducing maintenance time and ensuring quick return to service—critical factors in minimizing production downtime.
The KR30-KR47 series incorporates advanced engineering features to deliver superior performance. Precision ratings from P0 to P4 ensure tight dimensional tolerances, reducing vibration and noise in high-speed applications (Z1-Z4 vibration levels). Constructed from high-grade bearing steel, these bearings offer exceptional wear resistance and load capacity, extending service life even under demanding conditions. The combination of precision manufacturing and quality materials results in bearings that maintain consistent performance over millions of cycles, reducing the need for frequent replacements.
Choosing substandard bearings may seem cost-effective initially, but the hidden costs of premature failure—including production downtime, repair labor, and potential damage to adjacent components—quickly offset any upfront savings. Our KR series bearings, backed by ISO9001 and ISO14001 certifications, provide long-term reliability that lowers total cost of ownership. With a 12-month global warranty and defect replacement policy, we stand behind the performance of every bearing, ensuring peace of mind for our customers.
With over 18 years of experience serving global buyers across Europe, America, Southeast Asia, and the Middle East, Jinan Saifan Bearing has established a reputation for reliability and technical expertise. Our in-house QC lab ensures strict quality control from raw material inspection to final product testing. We offer flexible ordering with 1pc MOQ for standard items, 3–5 day sample lead times, and 5–15 day bulk delivery, supported by multiple payment options including T/T, credit card, and Alibaba trade assurance. Our technical team provides free guidance to help you select the right bearing for your application, ensuring optimal performance and longevity.
Don’t let bearing issues disrupt your production schedule. Contact us with your specific model requirements, application details, and quantity needs to receive a prompt quote. With our fast delivery and reliable performance, you can minimize downtime and keep your machinery running smoothly.
Q: Are these bearings genuine and traceable?
A: Yes, all our bearings are manufactured in-house under strict quality controls and are fully traceable. We can provide certification and test reports upon request.
Q: How do I confirm the correct KR model for my equipment?
A: Provide your equipment model, operating speed, load requirements, and application details. Our technical team will recommend the appropriate model and specifications.
Q: What is the warranty coverage for these bearings?
A: We offer a 12-month global warranty covering manufacturing defects. Defective products will be replaced or refunded at no additional cost.
Q: What is the minimum order quantity for KR series bearings?
A: Standard models are available with a 1pc minimum order quantity, ideal for emergency repairs or small-scale applications.
Q: How quickly can I receive my order?
A: Samples are shipped within 3–5 days, and bulk orders within 5–15 days. Shipping time depends on your location and chosen logistics method.
Q: Can you provide customized bearings for unique applications?
A: Yes, we offer full OEM/ODM customization. Contact us with your specific requirements for design and production support.
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