CNC Turned Motor Shaft

-- Steady & Reliable Manufacturer --

A CNC turned motor shaft is produced on a computer-controlled lathe, enabling highly repeatable outer diameters, shoulders, threads, and tapers across production runs of any size. Unlike manually turned or ground-only shafts, CNC turning allows complex multi-feature geometries — steps, undercuts, tapers, and thread forms — to be completed in a single clamping, minimizing accumulated positional error.

Fenglan operates a fleet of Mazak and Fanuc-controlled CNC turning centers with live tooling, capable of turning diameters from 4 mm to 120 mm and lengths up to 3,000 mm. ISO 9001:2015-certified processes and in-process SPC gauging ensure every shaft meets your print.

Specification

CNC Equipment	Mazak QT / Fanuc CNC lathes with live tooling
Diameter Range	4 mm – 120 mm OD
Length Range	20 mm – 3,000 mm (steady-rest support for long shafts)
Diameter Tolerance	IT6 (±0.008 mm at 25 mm Ø) standard; IT5 achievable
Straightness	≤ 0.02 mm/m (long shafts); ≤ 0.01 mm (short shafts)
Surface Finish	Ra 1.6 μm turned (standard); Ra 0.8 μm after post-grind
Material	45#, 40Cr, 304/316 SS, 6061 Al, brass, titanium on request
Thread Capability	M4–M64, UNC/UNF, trapezoidal, ACME
Inspection	Mitutoyo CMM; full dimensional report per batch
Certifications	ISO 9001:2015; SGS material certs available
MOQ	10 pcs production; 1 pc prototype

Application

CNC turned motor shafts are used wherever dimensional consistency across large batches is critical:

Motor manufacturers — high-volume rotor shafts for AC, DC, BLDC, and servo motors
Pump OEMs — impeller and mechanical-seal seat shafts with tight concentricity
Automotive tier-1 suppliers — starter motor shafts, EPS motor shafts, window-lift shafts
Robotics — servo motor output shafts with encoder-mount features
Medical devices — stepper motor shafts for infusion pumps and surgical robots
Power tools — armature shafts in angle grinders, drills, and sanders
HVAC equipment — fan and blower motor shafts

Advantage

Single-clamping multi-feature machining — steps, tapers, threads, and undercuts completed in one setup, eliminating inter-operation positional errors
IT6 tolerance as standard — tighter than many competitors' IT7/IT8 default, no up-charge
Live-tooling capability — axial or radial holes, flats, and keyways machined without a secondary operation
CMM batch report — every production run documented with actual measured dimensions
Scalable volumes — same process and tolerances from 10-piece samples to 50,000-piece annual blanket orders
Fast prototype turnaround — 3–5 business days from drawing approval to shipped sample

Payment & Shipping

We accept T/T (bank transfer), L/C at sight, PayPal (samples), and Western Union. A 30% deposit is required to confirm production, with the balance paid before shipment.

Standard lead time is 7–15 business days for regular orders; prototype samples ship within 3–5 days. We ship worldwide via DHL, FedEx, UPS, sea freight (FCL/LCL), and air freight. FOB Changzhou and CIF terms are both available. All goods are packed in export-standard cartons with foam padding or wooden crates for heavy items. A commercial invoice, packing list, and COA are provided with every shipment. For large OEM orders, customized packaging and private-label options are available upon request.

Q: What tolerances can your CNC lathes reliably hold on motor shaft diameters?
A: IT6 (approximately ±0.008 mm on a 25 mm diameter) is our production standard. For critical bearing seats or precision spindle applications we can tighten to IT5 with dedicated in-process gauging and final CMM verification on 100% of parts.

Q: Can you turn long motor shafts without deflection?
A: Yes. For shafts with L/D ratios above 10:1 we use steady-rest (lunette) support during turning to prevent deflection and chatter. Straightness is checked on a V-block to ≤ 0.02 mm/m before shipment.

Q: Do you perform grinding after CNC turning?
A: For shafts requiring Ra 0.8 μm or better on bearing seats, we follow turning with a cylindrical or centerless grinding operation. The additional cost is minimal and the tolerance achieved is significantly better than turning alone.

Q: What file formats do you accept for CNC turned shaft drawings?
A: We accept DXF, DWG (AutoCAD), STEP, IGES, and PDF. For repeat orders, we store your drawing on file and can release production on a purchase-order number alone.

Changzhou Fenglan New Materials Co., Ltd.

ABOUT US

Quality is Our Core Competitiveness

Changzhou Fenglan New Materials Co., Ltd.

Founded in 2010, As China CNC Turned Motor Shaft Manufacturers and CNC Turned Motor Shaft Company. we are dedicated to manufacturing precision parts for automotive, industrial, and electrical applications. Backed by advanced manufacturing and R&D, we provide high-quality products and trusted solutions to our clients. We provide a wide selection of components to meet diverse industry needs: Electric Shafts: Drive shafts, coil motor shafts, servo motor shafts, water pump motor shafts, industrial motor shafts, and magnetic levitation motor shafts. Hardware: Precision parts for medical equipment, water heater coils, plumbing fittings, and various gas springs. Our commitment is to support our customers with reliable performance and long-term value.

We look forward to working with you

With a strong R&D team, we are ready to take on challenges and bring creative ideas to the market.

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