Hangzhou Huaxing Kechuang Holding Group Co., Ltd. is one of the leading manufacturers and suppliers of double row cylindrical roller bearing nn3017 in China. As we have world-leading production equipment and strong manufacturing capabilities, we warmly welcome you to buy bulk high quality bearings at competitive price from our factory.
Double Row Precision Cylindrical Roller Bearing NN3017KW33/P5
Specifications
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Bearing Type: |
Precision cylindrical roller bearing NN3017K |
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Dimensions (dxDxB): |
85*130*34mm (NN3017) |
NN: Double-row cylindrical roller bearing with rigid inner and outer rings, designed for high-precision spindle support.
30: Dimension series code, representing lightweight series with standard width and outer diameter for machine tool spindle applications.
17: Bore size code, corresponding to an inner diameter of 85mm.
K: Tapered inner bore (1:12 taper), allowing precise preload adjustment to enhance rigidity and running accuracy.
W33: Bearing outer ring with an annular lubrication groove and three oil holes, supporting continuous lubrication for long-term high-speed operation.
P5: ISO P5 precision grade (ABEC-5), ensuring ultra-low runout, high dimensional accuracy and stable dynamic performance for precision equipment.
Primary Applications
These bearings are widely used in industries requiring precision, reliability, and high performance, including:
- Machine Tools: CNC lathes, machining centers, milling machines, and grinding spindles.
- Automotive Manufacturing: Precision spindle equipment for engine component machining and assembly lines.
- Aerospace: High-precision machining centers for turbine blades, structural parts, and other critical components.
- Medical Equipment: High-speed dental and surgical tools, as well as precision medical device manufacturing machinery.
- General Industrial Machinery: High-speed pumps, compressors, and other equipment requiring reliable radial load handling.
Advantage
∗ 2 high-tech R&D centers
∗ 2 factories - Hangzhou Yijia Precision Bearing Co., Ltd. and Zhejiang Ruiyang Bearing Technology Co., Ltd.
∗ Supported by advanced digital MES and SPC management systems
∗ IATF16949:2016, ISO9001:2015 and ISO14001 certifications
About HXB
1. Hangzhou Factory - YJB
Founded in June 2007, YJB is located in Hangzhou. As a subsidiary of HXB Group, we are a national high-tech enterprise and provincial science & technology enterprise specializing in R&D and manufacturing of high-precision, high-speed, advanced, special and professional bearings.
Core Capabilities & Intelligent Manufacturing
- Product Size: Inner diameter Φ3–Φ300mm
- Precision Classes: P2, P4 (ultra-precision grades)
- Annual Capacity: 3 million sets of precision bearings in a lean & intelligent factory
- Equipment Investment: Over RMB 3 million in world-leading precision testing instruments
- Digital Transformation: with full deployment of MESYS bearing design platform, ERP, MES, WMS, SPC real-time quality monitoring and OA systems, building a benchmark smart manufacturing plant.
2. Huzhou Factory
In 2021, the deep groove ball bearing factory relocated from Hangzhou to Huzhou. It operate in a 10,000㎡ production facility with a team of 75 employees, focused on the R&D, and manufacturing of high-performance deep groove ball bearings.
We maintain a professional engineering and quality system to ensure stable precision and reliability.
Certificates
Exhibition
FAQ
Q1: What is the main difference between cylindrical roller bearings and deep groove ball bearings for machine tool applications?
A: Cylindrical roller bearings adopt line-contact rolling structure, which focuses on high radial rigidity and heavy radial load capacity. In contrast, deep groove ball bearings are point-contact and more suitable for medium-speed, low-load and general-purpose rotating scenarios. For machine tool spindles that require strong rigidity and high-precision heavy cutting, cylindrical roller bearings perform far better in anti-deformation and vibration resistance, while ball bearings are mostly used for auxiliary supporting positions.
Q2: Do precision cylindrical roller bearings support axial load?
A: Standard precision cylindrical roller bearings are mainly designed for pure radial load bearing and cannot withstand large axial force. If the equipment needs to bear combined radial and axial loads, they need to be used together with angular contact ball bearings or thrust bearings. This structural design ensures higher radial rigidity and running accuracy for spindle systems.
Q3: Do precision cylindrical roller bearings support axial load?
A: Standard precision cylindrical roller bearings are mainly designed for pure radial load bearing and cannot withstand large axial force. If the equipment needs to bear combined radial and axial loads, they need to be used together with angular contact ball bearings or thrust bearings. This structural design ensures higher radial rigidity and running accuracy for spindle systems.
Q4: Do I need to pay import duties and taxes?
A: Import duties, VAT and local customs fees are the buyer's responsibility, charged by your local customs department upon arrival.
Q5: Do you provide technical support after purchase?
A: We provide professional technical guidance for bearing installation, maintenance and model selection for all customers.
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