2. Manufacturing Process: sawing round steel bars to length, rough turning on a CNC lathe, quenching and tempering heat treatment, finish grinding, and knurling at the end.

3. Dimensional Features: This is a multi‑stage stepped rotating shaft with an outer diameter that varies progressively in stages. The different diameter sections serve as bearing mounting locations, oil seal retaining seats, and shoulder stops. The end features a knurled finish. All three workpieces share identical external dimensions, ensuring high interchangeability. Machining is referenced to the center holes at both ends, resulting in excellent coaxiality along the entire shaft.

4. Surface Treatment: A thin coat of anti-rust oil is applied to the surface.

5. Product Application: A general-purpose stepped shaft for equipment transmission, suitable for gear reducers, small automated systems, and conveying equipment. It is responsible for transmitting rotational torque and serves as a mounting interface for bearings, seals, and drive pulleys. The shaft shoulder provides axial positioning for components, while the knurled tail enhances the clamping force of assembled parts, preventing loosening or slippage during operation.

Product Details

Machining Capabilities	Integrated services covering CNC machining, turning, milling, grinding, drilling, sawing, cutting, leveling, welding, and assembly.
Processed products	Large plates, flanges, shafts, welded frames, bases, hardware components, aluminum parts, and tooling fixtures.
Processable materials	Carbon steel, alloy steel, stainless steel, aluminum, copper, POM, ABS, acrylic…
Surface treatment	Galvanizing/phosphating/chromating, blackening, anodizing, wire drawing, sandblasting, baking varnish, spray painting, electrophoretic coating, nitriding…
Drawing Requirements	PDF/CAD/3D
Samples Available	Yes
Sample Lead Time	7–15 days
Machining accuracy	±0.01 to ±0.05 mm
Roughness	Ra 0.8~3.2
Inspection	Incoming material inspection → First-piece inspection → In-process inspection → Pre-shipment inspection
Packaging	Carton/Pallet/Wooden crate
Certificate	ISO9001:2015
Lead Time	1–6 weeks
Supply model	Supports single-item prototyping, small-batch trial production, and large-scale mass production.
Delivery Service	We offer machining with customer-supplied materials or with materials supplied by us, along with 3D modeling and process optimization.
After-sales service	Shipment includes a dimensional inspection report (if required); rapid response and corrective action for quality issues.
Logistics	We can arrange dedicated vehicle delivery for oversized items and provide reinforced protection with wooden crates.
Application areas	Lithium Extraction Equipment for Salt-Lake Brines Lithium Battery Equipment for New Energy Applications LCD Display Vision-Inspection and Burn-In Equipment Hengan Paper Industry Packaging Machine Series 3D polishing equipment Specializing in the custom manufacturing and supply of components for automated non-standard equipment.