Standard Precision Motor Shaft is professionally manufactured by Guanshuo. As a Chinese manufacturer with over ten years of experience in precision hardware processing, Guanshuo's standard precision motor shaft is made of mature 45# steel and 40Cr base material, processed by quenching and tempering heat treatment, with bearing fitting surface tolerance reaching IT6-IT7 grade. The unit price is more than 30% lower than precision shafts, combining stable performance with significant cost advantages. It perfectly adapts to mass procurement needs for general motors and household appliance motors, and is a cost-effective core transmission component that balances cost control and quality reliability.
Standard Precision Motor Shaft is a core transmission component for general-precision motors. Made of conventional 45# steel / 40Cr base material and undergoing quenching and tempering heat treatment, it does not require high-precision grinding or special processes, with controllable manufacturing costs, and is designed specifically for the cost control needs of bulk motor procurement.
This product primarily serves to transmit power between the motor rotor and external load, stably delivering the rotational torque generated by the motor to the transmission mechanism. It is an indispensable key component for the operation of medium and low-speed equipment such as fans, pumps, and ordinary gear motors. Featuring high universality, low maintenance cost, convenient repair and replacement, and high part interchangeability, it requires no special tools or customized parts for subsequent maintenance, effectively reducing overall equipment operation and maintenance costs.
Guanshuo standard precision motor shaft achieves excellent optimization between cost control and performance balance, with core advantages reflected in the following aspects:
1. Significant Cost Advantage
With mature and stable base materials and processing technology, the unit price is over 30% lower than precision-grade motor shafts. The cost advantage is even more prominent in mass production, fully supporting the cost budget for large-scale procurement of general-purpose motors and household motors.
2. Reliable Material Guarantee
45# steel quenched and tempered (HRC28-32) ensures both strength and toughness; 40Cr material is optional, suitable for heavy-duty working conditions and meeting the usage requirements of different load levels.
3. Precision Tolerance Control
Key mating surfaces (bearing positions) have IT6-IT7 grade tolerance, while non-mating sections have IT8-IT9 grade tolerance. Geometric tolerances meet conventional transmission requirements, matching the precision threshold for ordinary motor procurement.
4. Excellent Dynamic Balance Performance
G6.3 grade (≤1500rpm) and G2.5 grade (1500-3000rpm) dynamic balance accuracy effectively control vibration and noise, adapting to the operation requirements of medium and low-speed equipment such as fans and pumps.
5. Optional Basic Anti-corrosion
Supports basic anti-corrosion treatments such as blackening, phosphating, and simple chromium plating, meeting the protection requirements of dry and indoor conventional working conditions without additional anti-corrosion costs.
Ningbo Guanshuo Precision Hardware Co., Ltd. (Guanshuo) is a national high-tech enterprise founded in 2016, specializing in R&D and production of precision motor shafts for over a decade. With a workforce of 50+ employees, including 3 engineering technicians and 6 QC inspectors, we maintain a robust manufacturing base equipped with:
● 6 gear hobbing machines, 26 CNC cylindrical grinders, and 6 high-precision centerless grinders
● 60 standard CNC lathes, 2 machining centers, and 3 turn-mill compound machines
● 1 fully automatic optical inspection system, plus hardness testers, 2.5D profile projectors, surface roughness testers, gear testing centers, cylindricity testers, and more
The Standard Precision Motor Shaft is a core transmission component for general-purpose motors. Manufactured from conventional 45# steel or 40Cr with quenching and tempering heat treatment, it does not require high-precision grinding or special processes, making it cost-effective and ideal for bulk motor procurement.
This shaft efficiently transfers rotational torque from the motor rotor to external loads, serving as an essential part for medium- and low-speed equipment such as fans, pumps, and ordinary gear motors. Its high interchangeability, low maintenance cost, and easy replacement reduce overall operational expenses without requiring special tools or custom parts.
Standard Precision Motor Shaft is produced with standardized process flow, featuring high quality stability and meeting the reliability requirements of industrial-grade motor procurement. The specific technical parameters are as follows:
| Parameter Item | Value Range | Parameter Item | Value Range |
|---|---|---|---|
| Chamfer | C0.5～C1 | Surface Roughness | Ra1.6～Ra3.2 |
| Outer Diameter Tolerance | h9 / h8 | Diameter Runout | ≤0.03～0.05 mm |
| Mating Surface Tolerance | IT6 - IT7 | Non-mating Section Tolerance | IT8 - IT9 |
| 45# Steel Hardness | HRC28-32 | Dynamic Balance Grade | G6.3 / G2.5 |
The base material can be flexibly selected between 45# steel and 40Cr according to motor power, load and environmental requirements. Surface treatment methods also support customized selection, fully covering the procurement needs of conventional motor shafts. It is a cost-effective core component that balances cost, universality and reliability.
As a national-level high-tech enterprise, Guanshuo has passed ISO9001 quality management system certification and strictly implements quality control standards throughout the entire process, ensuring that every Standard Precision Motor Shaft delivered meets quality requirements.
The company holds 11 patent technologies (covering combined motor shaft structure, sealing performance, assembly convenience, bearing lubrication, and motor fixing base structures, among others), with industry-leading technology R&D strength.
Equipped with complete testing facilities including hardness testers, two-dimensional projectors, surface finish gauges, gear testing centers, cylindricity gauges and other professional testing instruments, the company implements full-chain quality traceability from raw material incoming inspection to finished product delivery. Each process undergoes strict inspection to ensure the consistency of product precision and performance.
Standard precision motor shafts are suitable for procurement scenarios with medium precision requirements, emphasis on procurement cost and batch supply stability, and no need for precision transmission. They are widely used in the following industrial fields:
1. Household Appliance Motor Industry
Core rotating shafts for various household motors, meeting the large-scale production needs of home appliance products with high volume and low cost.
2. Fan Equipment Manufacturing
Motor transmission shafts for medium and low pressure fans and ventilation equipment, with G6.3 dynamic balance grade effectively reducing operating vibration and noise.
3. Pump Industry
Motor output shafts for ordinary water pumps and centrifugal pumps, with 45# steel quenched and tempered material fully meeting conventional pump transmission working conditions.
4. Ordinary Gear Motors
Power transmission shafts for gear reduction motors and gear motors, with IT6-IT7 fitting accuracy ensuring stable gear meshing.
5. General Industrial Motors
Supporting rotating shafts for various standard industrial motors, adapting to batch procurement projects that are cost-sensitive but have basic quality requirements.
| Comparison Item | Guanshuo Standard Shaft | Premium Precision Shaft | Our Advantage |
|---|---|---|---|
| Application | General motors, fans, pumps, appliances | Servo, spindles, aerospace | Cost-effective bulk supply |
| Mating Tolerance | IT6 -- IT7 | IT4 -- IT5 | 30%+ cost saving |
| Dynamic Balance | G6.3 / G2.5 | G1.0 -- G2.5 | Perfect for medium/low speed |
| Material & Hardness | 45# / 40Cr, HRC28-32 | Alloy steel, deep carburizing | Stable, available, affordable |
| Lead Time (mass) | 15--25 days | 30--45 days | Faster, lower inventory cost |
| Warranty | 24 months | 12--18 months | Longer coverage, less risk |
We openly admit: our shaft is not for ultra-high-speed or sub-micron applications. But for 85% of general-purpose motors, it offers the best balance of performance, price, and availability.
Standard precision motor shafts are ideal for applications that require moderate accuracy, cost-effective bulk supply, and stable performance without ultra-precision needs. They are widely used in:
● Household appliance motors -- core shafts for high-volume, low-cost production
● Fan equipment -- transmission shafts for medium/low-pressure fans and ventilation systems (G6.3 dynamic balance reduces vibration)
● Pumps -- output shafts for ordinary water and centrifugal pumps (45# steel meets standard conditions)
● Ordinary gear motors -- power transmission with IT6-IT7 fitting for stable gear meshing
● General industrial motors -- supporting shafts for cost-sensitive but quality-conscious projects
We provide full-cycle services from sample development to mass production and after-sales support:
Technical consultation, 3D drawing collaboration, free samples, and cost‑optimization proposals to match your working conditions.
Sample Policy: Stock standard samples are provided free of charge (buyer pays shipping). Custom samples require machining costs, which are fully deducted from the first bulk order that meets standard MOQ. Annual clients with purchases over USD 30,000 receive up to 3 free custom samples per new model each year. All sample shipping fees are on the buyer's side (freight collect or client's forwarder pickup).
Full CNC traceability, 48‑hour progress updates, ISO‑compliant inspection, VMI inventory management, and emergency order response for stable supply.
MOQ (by specification): Standard parts 500--1000pcs; custom shafts/gears 300pcs; 42CrMo alloy steel items 800pcs. Orders below MOQ are accepted with a 30%--50% surcharge (waived if order value ≥ USD 5,000). Mixed items can combine to meet MOQ, and regular repeat clients may negotiate lower MOQ.
Standard lead time: Bulk production 15--25 working days (subject to quantity and complexity). Sample lead times: 1--3 days for stock, 7--12 days for custom machined, and 12--18 days for heat‑treated or special‑finish items. Expedited service available on request.
24-month extended warranty, 48-hour on-site diagnosis for global issues, free process upgrade iterations, and a wear-database for predictive maintenance.
A: Standard shafts have IT6-IT7 mating tolerances and are over 30% cheaper, suitable for general motors. Precision grades are for high-accuracy applications.
A: Standard 45# steel (HRC28-32) or 40Cr for heavy loads, customizable by request.
A: Blackening, phosphating, and simple chrome plating for indoor, dry conditions.
A: Samples are supported. MOQ for bulk orders varies by specification -- please contact sales.
A: Standard specifications are stocked; custom orders depend on quantity and complexity. We provide 48-hour progress updates during production.
A: 24-month extended warranty. Contact after-sales for any issues within that period.
A: Ningbo City, Zhejiang Province, China. Established in 2016.
A: Yes, we support parameter customization and 3D drawing co-design to develop tailored solutions.
Address
Qingqing Road 268-1, Jiaochuan Sub-district, Zhenhai District, Ningbo City, Zhejiang Province, China
Tel
