What is the difference between single and double keyway motor shafts?

A single keyway shaft has one slot for one key, suitable for standard torque applications. A double keyway shaft has two slots 180° apart, allowing for two keys which provide higher torque capacity and redundancy. Double keyway shafts are preferred for heavy-duty or high-shock-load applications.

What materials are used for keyway motor shafts?

Guanshuo manufactures keyway motor shafts from high-grade alloy steels (4140, 4340) and stainless steel grades (303, 304, 416). Alloy steel is used for high-strength industrial applications, while stainless steel is preferred for corrosive or hygienic environments.

What is the standard keyway size for motor shafts?

Keyway dimensions follow international standards such as ISO R773, ANSI B17.1, or DIN 6885. The specific keyway width and depth depend on the shaft diameter and torque requirements. Guanshuo provides custom keyway sizes per customer drawings.

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

For standard specifications with single keyway, lead time is 15–20 working days after drawing approval. For complex designs like double or multi-keyway 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 keyway shaft customization?

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

Keyway Motor Shaft Manufacturer – Custom Single & Double Keyed Shafts for Industrial Motors

What is a Keyway Motor Shaft?

A Keyway Motor Shaft features a precision-machined longitudinal slot (keyway) along its length. This slot accommodates a key that locks gears, pulleys, or couplings to the shaft, ensuring positive torque transmission without rotational slippage. This mechanical connection is essential for high-torque and heavy-load applications where friction fits alone are insufficient.

Key Technical Specifications – Guanshuo Keyway Motor Shaft

Parameter	Specification / Range	Typical Value
Keyway Type	Single keyway / Double keyway / Multi keyway	Customized per drawing
Keyway Standard	ISO / ANSI / DIN (parallel key)	ISO R773 / ANSI B17.1
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
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: Gearboxes, pumps, compressors, conveyor systems, agricultural machinery, industrial motors.

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Multi Keyway Motor Shaft

Multi Keyway Motor Shaft, as the ingenuity product specially built by Guanshuo supplier for heavy-load transmission scenarios, adopts multi-keyway synchronous meshing design with more uniform torque distribution. The symmetry of keyway to axis is strictly controlled within ≤0.02mm, its impact resistance and eccentric load resistance far exceed single-key and double-key products. Multi-key positioning effectively reduces radial runout and transmission clearance, with higher coaxiality and smoother operation. We support full customization of keyway quantity, angle and spacing, implement whole-process quality control from raw material to finished product, pass CE international certification, providing highly reliable transmission solutions for heavy equipment and high-end precision equipment.

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Double Keyed Slot Motor Shaft

Double Keyed Slot Motor Shaft is a high-precision core transmission component manufactured by Guanshuo Precision. As a professional Chinese manufacturer with over ten years of industry experience, we adopt a symmetrical parallel double keyway design and double-point meshing force structure to ensure more uniform and stable torque transmission, with significantly better eccentric load and impact resistance than traditional single keyway products. Made of high-quality alloy steel or carbon steel with quenching and tempering heat treatment, combined with CNC turning-milling integrated precision machining, the keyway symmetry to the axis reaches ≤0.02mm.

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Single Keyway Motor Shaft

Guanshuo Precision Hardware's Single Keyway Motor Shaft is engineered for superior torque transmission and lasting durability, featuring high-strength alloy steel, precision-ground surfaces, and strict quality control to ensure reliable operation under heavy loads and frequent reversals. With ISO-certified production, flexible customization, and global technical support, it helps reduce maintenance downtime and extends equipment life across machine tools, automation lines, and EV drivetrains.

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As a reliable Keyway 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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