Needle Roller Bearings

Bolt Type Wheel Roller Needle Cam Bearing KR30-KR47 for Industrial Machinery High Speed Low Noise

SKU: 1d9d4fc42617 In Stock

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.

  • Engineered for long life to minimize maintenance costs and extend equipment service intervals
  • Supports OEM/ODM customization to match specific machinery requirements, backed by Saifan’s decades of manufacturing expertise
  • Complies with international standards, ensuring seamless integration into industrial systems across automotive, agricultural, and new energy sectors
Wholesale Price (FOB)
¥1.00
MOQ: 1 Piece • Bulk discounts available on inquiry
12-Month Warranty
Free Samples
Global Shipping
Product Specifications

Technical Details & Description

Product Specifications

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

Application Industries

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

Reduce Downtime with KR Series Bolt Type Wheel Roller Needle Cam Bearings

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.

High-Speed, Low-Noise Performance for Critical Machinery

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.

Engineered for High-Speed Cam and Wheel Applications

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.

Technical Excellence That Drives Performance

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.

Why Quality Bearings Matter for Total Cost of Ownership

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.

Your Trusted Partner for Bearing Solutions

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.

Packaging & Shipping

  • Secure carton packaging with pallet reinforcement for bulk orders
  • 3–5 day lead time for samples, 5–15 days for bulk production
  • Global shipping via DHL, FedEx, UPS, air freight, or sea freight
  • Real-time tracking numbers provided for all shipments
  • 1pc minimum order quantity available for standard models

Get Your KR Series Bearings Today

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.

Frequently Asked Questions

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.

Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.

Sample Policy

Free samples available for distributors. 3–5 days production lead time.

Bulk Delivery

5–15 days for bulk orders. T/T, L/C and Alibaba payments accepted.

Certifications

ISO 9001:2015, ISO 14001 certified. ABMA / DIN compliant.

After-Sales

12-month warranty plus dedicated technical failure analysis support.

Engineering Insights

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