Quenching Motor Shaft

Guanshuo's Quenching Motor Shaft, through surface quenching and overall quenching processes, can achieve a surface hardness of HRC 45‑60 while maintaining core toughness. They combine hardness and impact resistance, making them a core choice for procurement under heavy‑load and high‑friction working conditions. After quenching, the grain size of the shaft body is refined, and its resistance to bending and torsional fatigue is significantly enhanced, meeting the reliability standards for procurement under frequent start‑stop and alternating load conditions. The rigidity is improved, and deformation is controllable; after fine grinding, it ensures coaxiality and roundness, satisfying the tolerance requirements for heavy‑duty precision transmission procurement. By adopting induction hardening and similar processes, it achieves a "hard surface, tough core" -- the surface is wear‑resistant and scratch‑resistant, while the core is impact‑resistant and less prone to fracture, meeting performance requirements under complex load conditions. It can perform quenching treatment on conventional shaft materials such as 45# steel, 40Cr, and 42CrMo without the need for special base materials, covering the general procurement needs for a wide range of heavy‑duty motor shafts.

Core Advantages

1. Premium Alloy Material and Precision Heat Treatment

Utilizes high-quality alloy structural steels such as 20CrMnTiH as the base material. Through precisely controlled carburizing and quenching processes, the surface hardness is stably achieved at 45‑60HRC (adjustable according to working conditions). This treatment enhances surface wear resistance while maintaining sufficient core toughness, significantly improving the shaft's torsional and bending fatigue strength.

2. National High-Tech Enterprise with Patented Technology

As a national-level high-tech enterprise, Guanshuo holds 11 motor shaft-related patents. These patents cover key technical points such as sealing structures, bearing installation positioning, and lubrication channels, directly translating into substantial improvements in assembly convenience, operational stability, and sealing reliability for the Quenching Motor Shaft.

3. Advanced Manufacturing and Full-Process Quality Control

The factory is equipped with 26 CNC cylindrical grinders, 6 high-precision centerless grinders, and fully automatic optical inspection equipment. Full-process quality control is implemented from raw material incoming to finished product shipping. Surface roughness can reach Ra0.4～Ra0.8 or higher precision, effectively reducing frictional resistance and improving transmission efficiency.

Technical Specifications

Guanshuo can provide highly customized motor shaft solutions based on customer requirements. The following are the general achievable process capabilities:

Parameter	Specification Range / Capability
Optional Materials	45# steel, 40Cr, 42CrMo
Heat Treatment Process	Carburizing Quenching, High-Frequency Surface Quenching, Induction Hardening
Surface Hardness	HRC 45 -- 60 (adjustable per requirements)
Effective Case Depth	0.8 -- 2.0 mm (customizable)
Surface Roughness	Ra0.4 ～ Ra0.8 or higher
Chamfer	C0.5 ～ C2
End Internal Thread	M3 ～ M12

Application Fields

The Quenching Motor Shaft, due to its excellent mechanical properties, is widely applicable across multiple high-end manufacturing sectors:

● New Energy Vehicles -- Core rotor shaft for drive motors, withstanding high torque and frequent start-stop cycles.

● Industrial Automation -- Transmission shaft for servo motors and precision reducers, ensuring positioning accuracy and response speed.

● Home Appliances -- Motor shaft for high-end washing machines and air conditioner compressors, ensuring long-term stable and quiet operation.

● Medical Equipment -- Transmission components for precision instruments, meeting high hygiene and corrosion resistance requirements.

● General Machinery -- Various power transmission scenarios such as pumps, valves, and gearboxes.

How to Evaluate the Quality of a Quenching Motor Shaft

When procuring a motor shaft, professional buyers should focus on the following five core indicators:

1. Surface Hardness and Effective Case Depth -- Surface hardness directly determines wear resistance, typically requiring ≥45HRC (and can be higher for severe conditions). Effective case depth should be selected based on working conditions: typically 0.8-2.0mm for most heavy-duty applications. Guanshuo can provide precise process solutions based on your specific conditions.

2. Metallographic Grade -- Martensite grade, retained austenite content, and carbide distribution after quenching are key indicators of heat treatment quality. Guanshuo's internal standards ensure microstructural uniformity and performance consistency.

3. Dimensional Precision and Surface Roughness -- Shaft diameter machining precision (recommended IT6 or higher) and surface roughness (recommended Ra≤0.8) directly affect fit precision and transmission efficiency. Guanshuo is equipped with 26 CNC cylindrical grinders and 6 high-precision centerless grinders to stably achieve high-precision machining.

4. Material Selection and Traceability -- High-quality alloy steels (such as 20CrMnTiH, 8620, etc.) as well as conventional grades (45#, 40Cr, 42CrMo) are the foundation of a reliable motor shaft. Guanshuo implements full-process quality traceability from raw material incoming, with each batch traceable to specific heat numbers and heat treatment records.

5. Supplier Process Capability and Quality System -- Evaluate whether the supplier has complete heat treatment capabilities, inspection equipment, and an ISO9001 quality system. As a national-level high-tech enterprise holding 11 motor shaft-related patents, Guanshuo is a reliable quality assurance partner.

Certification and Quality Assurance

Guanshuo has passed the ISO9001 quality management system certification. Additionally, the company holds multiple patents, including "A combined motor shaft structure" and "A motor shaft structure with good sealing performance," providing dual technical and legal guarantees for the design rationality and process advancement of the motor shaft.

Case Studies and Brand Endorsements

Guanshuo has established long-term partnerships with internationally renowned brands including Goldsmiths, Decathlon (France), Omron, and Yasi. The company has optimized products and completed upgrades for these brands. Its sales network covers core domestic regions including Guangzhou, Jiangsu, Fujian, Anhui, and Shandong. These successful cases fully demonstrate the quality stability and large-volume delivery capability of Guanshuo's motor shaft.

Why Choose Guanshuo

Choosing Guanshuo as your Quenching Motor Shaft supplier means partnering with an industry expert that combines technical depth with manufacturing scale:

● Factory Direct -- Direct procurement from the Chinese factory eliminates intermediaries, offering highly competitive pricing advantages.

● Rapid Response -- Provides professional pre-sales selection consultation and responds to your inquiries within 24 hours.

● Stable Delivery -- With over 50 employees and a large inventory of advanced CNC equipment, we have the production flexibility to handle large-volume orders and urgent requests.

● Quality Assurance -- ISO9001 certification system and full-process quality control ensure consistent quality and reliability across every batch.

● Customization Capability -- Supports highly customized production based on customer drawings and technical requirements, meeting differentiated needs across various application scenarios.

FAQ -- Frequently Asked Questions

Q: What is the typical case depth of the Quenching Motor Shaft?

A: Typically 0.8mm to 2.0mm for conventional carburizing and quenching, adjustable based on your working conditions. Guanshuo's engineering team can provide professional recommendations.

Q: Does Guanshuo support small-batch trial production or sample orders?

A: Yes. Guanshuo offers flexible sample and testing support. You can conduct small-batch trials to verify product suitability before moving to large-volume procurement.

Q: What is the minimum order quantity for the motor shaft?

A: MOQ varies by model, specification, and material. Please provide your drawings or technical requirements, and we will offer the optimal MOQ recommendation.

Q: How does Guanshuo handle product quality complaints?

A: Retain evidence and contact our after-sales team. We will respond per ISO9001 requirements and handle the matter according to agreed warranty terms.

Q: Can the motor shaft undergo additional anti-corrosion surface treatment?

A: Yes. In addition to rust-preventive oil, we offer chrome plating, nickel plating, and blackening for medical, food, or outdoor applications.

Q: What is the warranty period for the motor shaft?

A: 24-month extended warranty period.

For inquiries or custom requirements, please contact us.

● Phone / WhatsApp: +86‑15990709753

● Response time: Within 24 business hours for technical inquiries