What is the difference between a solid and hollow motor shaft?

A solid motor shaft is a solid cylindrical bar, while a hollow motor shaft has a central through-hole. The hollow design allows routing of cables, fluids, or lasers through the motor axis, enabling more compact machine designs. Hollow shafts also offer better weight-to-strength ratios for high-speed applications.

What materials are used for hollow motor shafts?

Guanshuo manufactures hollow motor shafts from high-grade alloy steels (4140, 4340) and stainless steel grades (303, 304, 416). Material selection depends on strength requirements, corrosion resistance needs, and operating environment.

What is the maximum hole diameter for a hollow motor shaft?

Our standard hollow motor shafts can accommodate hole diameters from 3mm up to 50mm. For larger diameters or special requirements, we offer custom engineering solutions. Please contact our team with your specific drawing for a feasibility assessment.

How long does it take to manufacture custom hollow motor shafts from China?

For standard specifications, lead time is 15–20 working days after drawing approval. For complex designs like deep through-holes or tapered bores with special materials, we typically deliver within 20–30 working days. Rush samples can be produced in 7–10 days.

Does Guanshuo support OEM/ODM hollow shaft customization?

Yes. Guanshuo is a full-service OEM/ODM manufacturer. We can customize hole diameter, depth, taper angle, materials, heat treatment, and surface finishes based on your 2D/3D drawings. MOQ is flexible and we provide engineering support for design optimization.

Hollow Motor Shaft – Customizable Hollow Transmission Shaft for Industrial Motors

What is a Hollow Motor Shaft?

A Hollow Motor Shaft features a central through-hole that allows routing of cables, fluids, or lasers directly through the motor axis. This design eliminates external cable carriers, reduces wear, and enables more compact machine layouts. Ideal for robotics, medical devices, semiconductor equipment, and high-speed automation applications.

Key Technical Specifications – Guanshuo Hollow Motor Shaft

Parameter	Specification / Range	Typical Value
Hole Type	Through-hole / Blind hole / Tapered bore	Customized per drawing
Hole Diameter	3mm – 50mm (custom available)	As per specification
Material Grade	4140, 4340 Alloy / 303, 304, 416 Stainless	As per application
Hardness (HRC)	28 – 58 HRC (through-hardened / induction)	42–48 HRC
Diameter Tolerance	±0.0005 inches (±0.0127 mm) or better	±0.0003 inches
Concentricity (TIR)	≤ 0.0004 inches (0.01 mm) or better	0.0002 inches
Surface Finish (Ra)	Ra 8–16 µin on bearing journals	Ra 8 µin
Length Range	100 mm – 2000 mm (custom)	As per drawing

✅ Certifications: ISO 9001:2015 | IATF 16949 compliant | 100% dimensional inspection.

✅ Applications: Robotics, medical devices, semiconductor equipment, packaging machinery, high-speed spindles, aerospace actuators.

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Tapered Motor Shaft

Guanshuo Precision Hardware Co., Ltd., as a professional manufacturer and supplier of Tapered Motor Shaft in China, adopts CNC turning and conical grinding technology to achieve keyless connection through conical surface fit, ensuring reliable torque transmission and convenient installation and disassembly. The coaxiality accuracy can reach ≤0.01mm, the conical surface contact rate is ≥90%, and the surface roughness can reach Ra0.8μm, making it suitable for heavy-load, frequent start-stop, and high-maintenance scenarios.Meeting the purchaser's selection requirements for high-torque transmission.

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Blind Hole Motor Shaft

Guanshuo, a professional Blind Hole Motor Shaft manufacturer in China, relies on more than ten years of precision hardware processing experience, adopts CNC turning and boring composite processes to produce single-ended blind hole structure motor shafts. The product can directly accommodate sensors, counterweights or lubricating media without additional reserved installation space. The inner diameter of blind holes ranges from φ2-30mm, depth ranges from 5-150mm, and the diameter runout accuracy is stably controlled within ≤0.01-0.02mm. It perfectly meets the dual requirements of lightweight and high rigidity for precision transmission scenarios such as high-speed servo motors and new energy equipment.

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Through Hole Motor Shaft

As a professional Through Hole Motor Shaft manufacturer in China, Guanshuo Precision Hardware Co., Ltd. adopts CNC turning and deep hole drilling technology to process hollow motor shafts. The through hole can be used for threading wires, ventilation or coolant passage. This product features high integration and is suitable for compact equipment and high-speed heat dissipation scenarios. The aperture range is φ2-50mm, the shaft diameter is φ8-130mm, and the tensile strength is not less than 600MPa. Guanshuo has passed ISO9001 quality management system certification and holds 11 patented technologies, equipped with 26 CNC cylindrical grinders and fully automatic optical inspection equipment, ensuring that every shaft meets strict standards for coaxiality, roundness and surface roughness.

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As a reliable Hollow Motor Shaft manufacturer and supplier in China, we have custom options and volume discount pricing. Please just send us a quotation!

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