The Ultra precision motor shaft supplied by Guanshuo Factory is not an upgraded version of ordinary motor shafts. Instead, it is an exclusive product that is fully manufactured in accordance with ultra-precision standards, from raw materials, processing to inspection. We adopt full-process CNC automated processing, and each shaft will undergo a comprehensive precision inspection before shipment to ensure that the batch deviation is ≤ 0.001 millimeters. Any non-compliant products will be strictly prevented from being mixed in, ensuring that each batch of products maintains consistent high precision and truly meets the procurement requirements of ultra-precision equipment.
Unlike conventional motor shafts which focus on practicality, this ultra-precise motor shaft emphasizes ultimate precision and extreme environmental adaptability. Whether it comes to dimensional tolerance, surface smoothness, or material toughness and weather resistance, all meet the high-end standards of the industry. It is the core support for high-end ultra-precision equipment transmission and also reflects our core strength as a professional motor shaft supplier.
This is the most core highlight. The key is that the surface tolerance range reaches IT3 to IT4, the diameter tolerance is controlled within ±0.001 to ±0.003 millimeters, the coaxiality is ≤0.002 millimeters, the radial runout is ≤0.003 millimeters, the end face runout is ≤0.002 millimeters, and the outer diameter tolerance reaches h5 standard.
After being processed through ultra-precision grinding, mirror polishing and other techniques, the surface roughness of the bearing position is as low as Ra0.05 to Ra0.2, the friction coefficient is close to zero, fully meeting the requirements of ultra-precision gapless transmission and zero-gap assembly. During assembly, there is no need for repeated adjustments, significantly improving the assembly yield.
Inspection Standard: Each shaft undergoes full-size inspection by fully automatic optical inspection equipment, inspection data is traceable
Inspection Equipment: Cylindricity meter, surface finish gauge, 2D projector (see "Quality Control" section for details)
We do not use ordinary substrates. Instead, we specially combine high-end materials such as premium alloy structural steel, bearing steel, and titanium alloy.
After undergoing vacuum carbonizing and quenching, deep low-temperature treatment, and ion nitriding and other professional processes, the surface hardness of the shaft body reaches HRC 60 to 65. Meanwhile, the core maintains high toughness. Even under ultra-high-speed and ultra-heavy-load working conditions, it can operate stably, not prone to wear or fracture, significantly extending the service life.
Patented Technology: We have multiple patented technologies, see patent certificate section for details
We offer high-end surface treatments, such as vacuum ion nitriding and ceramic coating treatment, which enable the motor shaft to have extremely strong corrosion resistance and rust prevention properties. Even within the extreme temperature range of -60℃ to 200℃, it can maintain stable performance.
Whether it is extreme industrial environments with drastic temperature and humidity changes, strong corrosiveness, or high vacuum levels, it can operate stably for a long time without frequent maintenance, significantly reducing the maintenance costs of ultra-precision equipment.
The entire process is carried out through numerical control automation processing and comprehensive precision testing, ensuring that the precision of each batch of products remains consistent. The batch deviation is extremely small, fully meeting the standardized requirements for large-scale procurement of ultra-precision motors. During the procurement process, there is no need to worry about assembly problems caused by batch differences, significantly improving the procurement efficiency.
Capacity Guarantee: 26 CNC cylindrical grinders, 6 high-precision centerless grinders, 60 CNC machine tools
Traceability System: Full-process CNC processing quality traceability, each batch can be traced back to raw material batch and processing parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Outer diameter tolerance | h5 | Surface roughness | Ra0.05～Ra0.2 |
| Diameter runout | ≤0.001～0.003 mm | End face run-out | ≤0.002 mm |
| Coaxiality | ≤0.002 mm | Radial runout | ≤0.003 mm |
| Applicable temperature range | -60℃ ~ +200℃ | Heat treatment method | Vacuum carburizing quenching + cryogenic treatment |
| Optional materials | Alloy structural steel / Bearing steel / Titanium alloy | Surface treatment | Ion nitriding / Ceramic coating |
| Batch consistency deviation | ≤0.001 mm | Inspection method | Fully automatic optical full inspection |
💡 Need customized parameters? We support full-size customization, contact engineers for customized solutions
| Inspection Equipment | Inspection Items |
|---|---|
| Fully automatic optical inspection equipment | Full-size automatic inspection |
| Cylindricity gauge | Cylindricity, roundness, straightness |
| Surface finish gauge | Surface roughness Ra value |
| Two-dimensional projector | Profile dimensions, geometric tolerances |
| Hardness tester | Surface hardness HRC |
| Gear testing center | Gear related parameters |
1. Incoming Inspection: Raw material material certificate + hardness sampling + initial dimension inspection
2. First Article Inspection: Full-size inspection of first article per batch, confirm qualified before mass production
3. Process Patrol Inspection: Process sampling inspection to ensure processing stability
4. Finished Product Full Inspection: 100% full-size inspection by fully automatic optical inspection equipment
5. Factory Re-inspection: QA department sampling re-inspection, issue factory inspection report
Quality Certification: Passed ISO 9001 quality management system certification
Available upon request: Material certificate, heat treatment report, factory inspection report (provided with shipment)
High-end precision instruments, such as precision measuring instruments and laboratory testing equipment, have extremely high requirements for transmission accuracy. Even the slightest deviation could affect the test results. Our Ultra precision motor shaft can achieve seamless transmission, ensuring the precise operation of the instruments and enhancing the accuracy of the test data.
Ultra-precision machine tools and equipment. The transmission accuracy of machine tools directly determines the quality of the processed products. Especially for high-end CNC machines and precision grinding machines, the motor shaft needs to have extremely high precision and stability. This product can perfectly match, reduce transmission errors, and improve processing accuracy and product qualification rate.
High-end equipment for extreme environments, such as aerospace-related equipment, deep-sea exploration equipment, and high-vacuum environment equipment, operate in harsh conditions and have extremely high requirements for the corrosion resistance, temperature resistance, and stability of motor shafts. Our Ultra Precision Motor Shaft can operate stably and continuously in such extreme environments, ensuring the normal operation of the equipment.
● High-end electronic equipment
● Precision medical devices
● High-end automated production lines
In addition, it is also widely applied in scenarios such as high-end electronic equipment, precision medical devices, and high-end automated production lines. For all procurement demands that require ultra-precise gap-free transmission, stable batches, and adaptability to extreme environments, this ultra-precise motor shaft can perfectly meet the requirements. It is the preferred core component for high-end equipment procurement.
Provide technical parameter customization consultation, 3D drawing collaborative design verification, free sample provision and cost optimization plan, ensuring that the product matches the customer's equipment conditions and cost reduction requirements.
Stock standard samples are provided free of charge, with shipping costs borne by the buyer. Custom samples are subject to machining fees, which are fully deducted from the first bulk order meeting standard MOQ. Annual clients with purchases over USD 30,000 are entitled to up to 3 free custom samples per new model each year.
Full-process CNC processing quality traceability, 48-hour production progress visual feedback, ISO/TS16949 system certification quality inspection, support for VMI inventory management and emergency order response.
24-month extended warranty period, on-site diagnosis of global problems within 48 hours, free provision of process upgrade and iteration solutions, establishment of a customer equipment wear database for early warning and maintenance.
Ningbo Guanshuo Precision Hardware Co., Ltd. was established in 2016 and is located in Zhejiang Province, Ningbo City, China. It focuses on the research and manufacturing of high-precision motor shaft cores. It is a professional manufacturer of Ultra precision motor shafts that integrates R&D, production, and sales.
The company has been deeply engaged in the field of precision hardware processing for over a decade. It is driven by technological innovation and focuses on the high-end component niche market. It is a national-level high-tech enterprise and has now become one of the core suppliers for the new energy vehicle, industrial automation, and home appliance industries.
● Total employees: 50+
● Engineering and technical personnel: 3
● Quality department: 6
● R&D team: focused on motor shaft cores, automotive components, etc.
● Patented technologies: 11 items
● CNC cylindrical grinders: 26 units
● High-precision centerless grinders: 6 units
● Gear hobbing machines: 6 units
● Machining centers: 2 units
● Turning and milling combined machines: 3 units
● Ordinary CNC machine tools: 60 units
● Fully automatic optical inspection equipment: 1 set
A: Standard parts: 500--1000pcs; custom shafts/gears: 300pcs; 42CrMo alloy steel: 800pcs. Orders below MOQ are accepted with a 30%--50% surcharge (waived if ≥USD 5,000). Mixed items can combine to meet MOQ. Regular clients may negotiate lower MOQ.
A: Sample lead time: 1--3 working days for stock, 7--12 days for custom machined, 12--18 days with heat treatment/special finish. Mass production lead time: 15--25 working days, subject to quantity and complexity. Expedited service available upon request.
A: Yes, material certificates, heat treatment reports and factory inspection reports can be provided for each batch of products.
A: Yes, we have a professional engineering team providing 3D drawing collaborative design and technical consultation.
📞 Get a customized solution: Tell us your requirements, professional engineers will reply within 24 hours
Ningbo Guanshuo Precision Hardware Co., Ltd.
Address: Qingqing Road 268-1, Jiaochuan Sub-district, Zhenhai District, Ningbo City, Zhejiang Province, China
Phone: +86-15990709753
💬 Online Consultation: Contact Now
Address
Qingqing Road 268-1, Jiaochuan Sub-district, Zhenhai District, Ningbo City, Zhejiang Province, China
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