An Expanding Shaft for Motor Body Turning is an internal clamping device designed to grip motor housings from the bore (ID) during CNC turning operations. The shaft expands uniformly to center the component accurately, ensuring true OD machining, consistent wall thickness, and superior surface finish without deforming thin-wall motor bodies.
Key Features
- • Uniform 360° Expansion for precise centering
- • High Concentricity up to ≤ 0.01 mm TIR
- • Hardened & Precision Ground expanding segments
- • Rigid Core Design minimizes chatter at higher RPM
- • Replaceable Expanding Sleeves for long service life
- • Custom Bore Sizes & Expansion Range available
Applications
- • Motor body OD turning
- • Motor housing machining
- • Stator body turning
- • Electric motor manufacturing
- • CNC lathe mass production lines
Technical Specifications (Typical)
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Parameter
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Specification
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Holding Type
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Internal Expanding
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|
Actuation
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Manual / Pneumatic / Hydraulic
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|
Material
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Alloy Steel / Tool Steel
|
|
Hardness
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58–62 HRC
|
|
Accuracy
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≤ 0.01 mm TIR
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Suitable Machines
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CNC Lathe / SPM
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|
Customization
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Bore, length, expansion, mounting
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Advantages for Motor Body Turning
- • Maintains true OD–ID concentricity
- • Prevents deformation of thin-wall housings
- • Reduces setup time & rejection rate
- • Ensures consistent surface finish
- • Ideal for high-volume production
Why Choose Asmita Industries?
✔ 34+ years precision manufacturing experience
✔ In-house design, grinding & inspection
✔ Custom expanding shafts as per drawing/sample
✔ Trusted Indian collet & workholding manufacturer
✔ Pan-India supply & export support
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