Plain Shafts

Feida Machinery has specialized in the production of plain shafts since 1988. The product features high linear motion accuracy, smooth surface finish, simple construction, easy installation and maintenance, and wide range of specifications. It is commonly used as guiding and supporting components in linear motion systems.

What is a Mechanical plain shaft?

Feida plain shafts are high-precision cylindrical transmission components in many systems that require straight, precise movement. They pair with linear bearings or bushings to allow parts to slide smoothly, ensuring accurate motion in a variety of machines and industrial applications.

Basic Structure

Shaft Body: It is the main structural component.
Precision-Machined Surface: The outer cylindrical surface is usually processed through turning, grinding, polishing, or other precision machining processes to achieve the required dimensional accuracy and surface quality.
Surface Treatment: Some linear shafts are hardened, chrome plated, or otherwise surface treated to improve wear resistance, hardness, and corrosion resistance.

Manufacturing Process & Quality Control

Feida has a mature production system and stable production capacity. Whether it is small-batch trial production or large-scale production, we can meet the needs of customers. The production flow:

Raw Material Preparation → Cutting → Turning → Heat Treatment → Straightening → Cylindrical Grinding → Finishing → Surface Treatment → Inspection → Cleaning & Packaging

Feida conducts production activities in compliance with ISO 9001:2015. Quality control is implemented throughout the entire production process, covering IQC, IPQC, FQC and OQC, to ensure product quality. Typical inspection items include:

● Outer Diameter
● Straightness
● Roundness
● Surface Roughness
● Hardness

Applications

3D printers, CNC machines, and engraving machines

Used as linear guide shafts for sliders and platforms.

Automation equipment

Combined with linear bearings to enable linear movement of cylinders, mechanical arms, modules, and other components.

Robotic arms and robots

Used for guiding, supporting, or transmitting linear motion.

Packaging machinery

Used in feeding, cutting, sealing, and other linear-motion mechanisms.

Textile and printing equipment

Used in mechanisms that require precise reciprocating movement.

Laboratory equipment and instruments

Used in linear stages, positioning mechanisms, and similar applications.

Automotive, motorcycle, and general machinery

Used in certain transmission, support, and positioning structures.

Frequently Asked Questions

Can you provide customization services?

Yes. Plain shafts can often be customized according to specific requirements, including diameter, length, material, hardness, surface treatment, end machining, threads, grooves, and other special features.

What are the types of plain shafts?

According to structure/application, they are classified as solid linear shaft, hollow linear shaft, stepped shaft, guide shaft, and support Shaft.

What materials are commonly used for plain shafts?

Common materials include carbon steel, bearing steel, stainless steel, alloy steel, and tool steel.