Custom Precision Shaft & Sleeve
Custom precision shafts and shaft & sleeve assemblies for home appliance motors, industrial equipment, and OEM clients who need consistent dimensional accuracy at production volume. Produced in our dedicated shaft workshop with CNC lathes, grinding machines, and gear hobbing equipment. Surface roughness down to Ra 0.4 μm, coaxiality within 0.003 mm.
- Surface roughness Ra 0.4 μm — precision ground finish
- Coaxiality within 0.003 mm
- Dedicated shaft workshop with 40+ CNC lathes and grinding machines
- Gear hobbing, thread rolling, heat treatment all in-house
- Custom dimensions from drawings or samples
- Long-term OEM supply to Hisense, Midea, Samsung and more
Service & Delivery
Origin: Jiangyin, Jiangsu, China
OEM/ODM: Custom shaft dimensions from 2D drawings, 3D CAD, or reference samples
Workshop: Dedicated shaft & sleeve production line — CNC lathes, grinding, hobbing, heat treatment
Lead Time: First samples 1–2 weeks from drawing confirmation / Production 15–25 days
MOQ: No fixed minimum — single prototypes to high-volume annual programs
Surface: Ground finish Ra 0.4 μm standard; other specs on request
Delivery: FOB, CIF, DDP — global shipping from Jiangyin
Quality: IATF 16949, ISO 9001, ISO 14001 certified
Specifications
| Parameter | Specification |
|---|---|
| Product Name | Precision Shaft / Shaft & Sleeve Assembly |
| Manufacturing Process | CNC turning, grinding, gear hobbing, thread rolling, heat treatment |
| Surface Roughness | Ra 0.4 μm |
| Coaxiality | Within 0.003 mm |
| Heat Treatment | In-house hardening — power supply HTZ-160KW + 600-stroke servo CNC quenching machine |
| CNC Equipment | 40+ CNC lathes including CK46, YX-P40H series, horizontal CNC lathe CK40; CNC vertical lathe CKG515 |
| Grinding Equipment | CNC external cylindrical grinding machines MK1320, T151A; 9 grinders total |
| Gear Hobbing | Fully automatic gear hobbing M12; Z28-185, VNC500, ZP28-16 and others |
| Thread Rolling | Z28-16, Z28-158 thread rolling machines |
| Machining Centers | VMC850L, MK-3-V850 |
| Quality Inspection | CMM dimensional verification, image measuring instrument, hardness tester HR-150A |
| Quality Certifications | IATF 16949, ISO 9001, ISO 14001, ISO 45001 |
| Customization | OEM/ODM — 2D drawings, 3D CAD files, or reference samples |
| First Sample Lead Time | 1–2 weeks from drawing confirmation |
| Production Lead Time | 15–25 days |
| MOQ | Flexible — single prototypes to annual volume programs |
| Origin | Jiangyin, Jiangsu, China |
| Delivery Terms | FOB, CIF, DDP available |
Precision Shafts — Custom CNC Manufacturing
Knurled End Shaft
Spline Shaft with Cross Hole
Stepped Shaft with Sleeve
Stepped Shaft
Multi-Step Compound Shaft
Shaft & Sleeve Assembly
Cross-Hole Shaft
Short Spline Shaft
Shaft Precision Specs We Hold in Production
Dedicated Shaft Workshop — Core Product Line
MORE ABOUT MEITUO
Meituo is a metal parts manufacturer based in Jiangyin, China, founded in 1999. Our 33,000 m² facility integrates mold design, die casting, machining, stamping, surface treatment, and assembly. We hold IATF 16949 and ISO 9001 certifications and supply OEM parts to home appliance, automotive, and industrial customers in over 30 countries.
FAQ
What materials do you use for precision shafts?
What tolerances can you hold on custom shafts?
Do you offer heat treatment for shafts?
How quickly can you deliver first samples?
Can you produce shaft and sleeve assemblies together?
Precision Shaft Manufacturing: Types, Materials, Processes and Quality Standards
What Is a Precision Shaft?
A precision shaft is a cylindrical mechanical component that transmits rotational motion and torque between connected parts. In home appliance and industrial motor applications, the shaft is the central element of any rotating assembly — it connects the motor rotor to the driven component, runs inside bearings, and must maintain its dimensional integrity under continuous load and rotation.
The word "precision" here refers to the tolerance requirements placed on the shaft's geometry. Coaxiality, surface roughness, diameter tolerance, and roundness all affect how smoothly the shaft runs, how long the bearings last, and whether vibration or noise appears in the finished product. These are not specifications that can be relaxed without consequence.
Common Shaft Types in Home Appliance and Industrial Applications
Spline Shaft
A spline shaft has longitudinal ridges or teeth machined along its length, allowing torque to be transmitted to a mating component while permitting axial movement. Common in washing machine drive systems and motor assemblies where the connected component needs to slide along the shaft axis.
Stepped Shaft
A stepped shaft has multiple diameters along its length, with each section serving a different function — bearing seat, gear seat, or coupling interface. Most motor shafts in home appliance applications are stepped shafts. Dimensional accuracy at each step transition is critical for bearing fit and assembly alignment.
Shaft with Sleeve Assembly
In some applications, a sleeve — a tubular component — is fitted onto the shaft to provide a bearing surface, seal seat, or wear interface. We produce both components in our dedicated shaft and sleeve workshop and can supply them as a matched assembly.
Cross-Hole Shaft
A shaft with one or more transverse holes drilled through its diameter, used for pin retention, lubrication passages, or mechanical locking features. Hole position accuracy relative to shaft features is a key quality parameter.
Materials Used in Precision Shaft Manufacturing
| Material | Characteristics | Typical Application |
|---|---|---|
| Carbon steel (e.g. 45#) | Good machinability, adequate strength, responds well to heat treatment | General motor shafts, home appliance drive shafts |
| Alloy steel (e.g. 40Cr) | Higher strength and toughness after heat treatment, better fatigue resistance | Higher load shafts, industrial applications |
| Stainless steel | Corrosion resistant, suitable for wet or chemically exposed environments | Pump shafts, food equipment, wet appliance applications |
Manufacturing Process for Precision Shafts
CNC Turning
The primary shaping operation. Raw bar stock is turned on CNC lathes to produce the shaft's stepped profile, bearing seats, and thread features. Our shaft workshop runs over 40 CNC lathes including CK46, YX-P40H series, and horizontal CNC lathe CK40 models. Dimensional control during turning sets the foundation for all subsequent operations.
Gear Hobbing and Thread Rolling
For spline shafts and gear shafts, gear hobbing is performed after turning using fully automatic hobbing machines including M12, Z28-185, and VNC500 models. Thread rolling — a cold-forming process that produces stronger threads than cutting — is done on Z28-16 and Z28-158 machines. Both operations require precise setup to maintain positional accuracy relative to the shaft's datum features.
Heat Treatment
Many shaft applications require surface hardening to improve wear resistance at bearing and gear interfaces. We perform heat treatment in-house using a 600-stroke servo CNC quenching machine with HTZ-160KW power supply. In-house heat treatment means we control the process parameters and can verify results directly, rather than relying on an outside vendor.
Precision Grinding
Grinding is the final sizing operation on bearing seats and other critical diameter features. We run CNC external cylindrical grinding machines including MK1320 and T151A models. Grinding brings the shaft to final dimensional tolerance and surface finish. Our standard production spec is coaxiality within 0.003 mm and surface roughness Ra 0.4 μm, achieved and verified in batch production.
Inspection
Finished shafts are measured on CMM equipment and image measuring instruments. Hardness is verified using HR-150A hardness testers. Our process operates under IATF 16949, which requires dimensional traceability and process records to be maintained across all production batches.