China Linear Module Shaft Factory
Manufacturer of custom and standard linear module shafts for precision linear motion systems, with controlled tolerances, verified heat treatment, and stable production capacity.
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Diameter range: Ø6 mm – Ø60 mm
Covering standard linear module specifications
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Length capability: up to 2000 mm
Long-stroke linear motion applications
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Materials: Carbon steel / Alloy steel / Stainless steel
Selected based on application requirements
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Heat treatment: Induction hardening, quenching & tempering
In-house controlled process
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Tolerance & straightness for linear motion assemblies
Engineered for smooth operation
Engineering review included · 24–48h response
Linear Module Shaft Overview
Complete overview of products, technical capabilities, and manufacturing process
What Is a Linear Module Shaft?
A linear module shaft is a precision ground round shaft used in linear modules to guide linear bearings and support smooth, accurate linear motion.
It is a core component in automation and motion systems where stable guidance and repeatable positioning are required. The shaft works together with linear bearings to enable low-friction, high-precision movement along a defined axis.
Key Features of Our Linear Module Shafts
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Designed for use with linear bearings and linear module assemblies
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Controlled diameter, straightness, and surface finish for smooth motion
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Heat-treated for wear resistance and long service life
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Suitable for continuous operation in automation equipment
Core Motion Component
Works with linear bearings to enable precise, repeatable positioning
Applications of Linear Module Shafts
Linear module shafts are commonly used in equipment and systems where stable linear guidance, positioning accuracy, and long-term motion reliability are required.
Linear Modules & Actuators
- Guiding shafts for linear bearings
- Smooth and repeatable linear movement
- Single and multi-axis configurations
Automation Equipment
- Pick-and-place systems
- Transfer units and production lines
- Consistent motion control
CNC & Precision Machinery
- Accurate linear travel in auxiliary axes
- Fixtures and motion subassemblies
- High positioning repeatability
Packaging Machinery
- High-cycle linear motion guidance
- Filling, sealing, and conveying systems
- Stable guidance under continuous operation
Robotics & Motion Systems
- Linear motion units in robotic arms
- Alignment stability under dynamic loads
- Wear resistance for extended service life
Inspection & Assembly
- Controlled movement in measuring systems
- Testing and quality control equipment
- Precision assembly processes
Shaft Types & Configurations
Linear module shafts are supplied in several standard structural types to match different assembly methods, load requirements, and space constraints. Select shaft types based on bearing arrangement, mounting method, and overall module design.
Solid Linear Shaft
- Most commonly used type for linear modules
- Suitable for standard bearings & general loads
- High rigidity and dimensional stability
Hollow Linear Shaft
- Reduced weight compared to solid shafts
- Ideal for weight or inertia limitations
- Internal routing for cables or air lines
Stepped Shaft
- Multiple diameters along shaft length
- Precise axial positioning capability
- Compact or integrated module designs
Threaded Ends
- Threaded ends for axial fixing
- Simplified mounting, fewer fixtures
- Widely used in modular linear units
Keyed / Slotted Shaft
- Keyways or slots for torque transmission
- Anti-rotation requirements
- Synchronized motion with other components
Custom Machined
- Non-standard geometries per drawing
- Steps, threads, grooves, special ends
- OEM and customized module designs
Solid Shaft
Standard type for general loads. High rigidity and stability.
Hollow Shaft
Reduced weight. Internal cable routing possible.
Stepped Shaft
Multiple diameters for precise axial positioning.
Threaded Ends
Easy mounting with threaded end fixing.
Keyed Shaft
Keyways for torque and anti-rotation.
Custom OEM
Non-standard geometries per your drawings.
Selection Note for Buyers
How to choose the right shaft type for your linear module
Most linear module shafts are selected based on assembly interface and motion requirements, rather than material alone. Providing shaft drawings, bearing model references, or assembly sketches helps ensure correct type selection and dimensional compatibility.
Technical Specifications
The following specifications reflect typical ranges for linear module shafts used in automation and linear motion assemblies. Actual values may vary depending on shaft design, material selection, and application requirements.
Standard Specification Range
| Item | Specification |
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Ø6 mm – Ø60 mm |
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Up to 2000 mm |
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Carbon steel, alloy steel, stainless steel |
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Ground surface suitable for linear bearing contact |
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HRC 55–60 (hardened surface) |
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Controlled for linear motion applications |
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Suitable for precision bearing fit |
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According to drawing or application requirement |
Carbon steel, alloy steel, stainless steel
Ground surface suitable for linear bearing contact
Controlled for linear motion applications
Suitable for precision bearing fit
According to drawing or application requirement
Engineering Note: Tolerance grades and precision values are defined by application requirements. Please provide technical drawings or bearing specifications for accurate quotation and dimensional verification.
Typical Bearing Compatibility
Linear module shafts are commonly used with the following bearing types
Ball-Type Linear Bearings
Recirculating ball design for smooth, low-friction motion
Sliding Linear Bushings
Plain bearing contact for compact installations
Integrated Bearing Blocks
Module-ready assemblies for quick integration
Material & Heat Treatment Capability
Material selection and heat treatment play a critical role in the performance and service life of linear module shafts. The correct combination depends on load conditions, bearing type, operating speed, and environmental factors.
Material Selection
Carbon Steel
StandardCommonly used for standard linear module applications where balanced strength, machinability, and cost efficiency are required.
Alloy Steel
High PerformanceSelected for higher load capacity, improved fatigue resistance, and better dimensional stability during long-term operation.
Stainless Steel
Corrosion ResistantUsed in environments requiring corrosion resistance, such as humid conditions or applications with special cleanliness requirements.
Heat Treatment Options
Induction Hardening
Most CommonApplied to create a hardened surface layer for wear resistance while maintaining a tough core, suitable for linear bearing contact.
Quenching & Tempering
Full HardeningUsed to improve overall mechanical strength and toughness, providing stable performance under continuous operating conditions.
Application-Specific
CustomHeat treatment parameters, including hardness level and hardened depth, are defined based on shaft size, bearing type, and operating conditions.
Full Capability Overview
Complete RangeRather than offering a single standard solution, material and heat treatment options are defined based on your specific application requirements.
Typical Surface Hardness: Linear module shafts after hardening achieve HRC 55–60, ensuring optimal wear resistance for linear bearing applications.
Why This Matters for Linear Module Shafts
Improper material or heat treatment selection can result in premature wear, unstable motion, or bearing damage. Controlled processes help ensure consistent surface quality, dimensional stability, and predictable service life.
Manufacturing Process & Equipment
For linear module shafts, manufacturing quality is defined by consistency, dimensional control, and process stability. Our production process is built to support these requirements from machining through final inspection.
Dimensional Consistency from Machining to Finishing
Linear module shafts must fit bearings and housings without adjustment. Turning, grinding, and finishing operations are carried out with controlled process parameters to maintain stable diameters, straightness, and surface condition. This ensures shafts from different batches remain interchangeable.
Control Before and After Heat Treatment
Heat treatment is a critical step for linear module shafts, but it also introduces the risk of deformation if not properly managed.
Result: Dimensional stability maintained, additional correction work avoided.
Direct Manufacturing, Clear Technical Communication
All key machining and finishing operations are handled at the factory level. This allows technical requirements to be discussed directly, without passing through multiple intermediaries. Clearer communication, faster response to drawing changes, better alignment between design intent and production results.
Process-Based Inspection at Each Stage
Inspection is integrated into each major production stage rather than only at final delivery. Dimensional checks and surface condition inspections are performed throughout the process to identify issues early. This reduces the risk of non-conforming shafts reaching assembly.
From Sample Approval to Series Production
The same manufacturing process is applied for samples and repeat production. Once a shaft design is approved, the production method remains consistent as volumes increase. This avoids revalidation issues and ensures approved samples accurately represent future deliveries.
Quality Control & Tolerance Control
For linear module shafts, dimensional accuracy and surface quality directly affect bearing fit and motion performance. Our quality control process is structured to verify conformance at each critical stage, not just at final shipment.
Incoming Material Inspection
Raw materials are verified for grade and basic dimensions before machining to ensure consistency from the starting stage.
In-Process Dimensional Checks
Key dimensions such as diameter and straightness are checked during machining and grinding, not only at final inspection.
Post Heat Treatment Verification
Shaft dimensions and straightness are re-checked after heat treatment to confirm dimensional stability.
Surface Condition Inspection
Ground surface quality is inspected to ensure suitability for linear bearing contact and smooth motion.
Tolerance Defined by Drawing
Final tolerances are inspected according to drawings or agreed technical requirements, not assumed defaults.
Inspection Records Available
Inspection data can be provided upon request to support incoming quality checks and batch traceability.
Need Specific Tolerance Requirements?
Send us your drawing for a detailed review and quotation.
Custom Linear Module Shaft Capability
Most linear module shafts are defined by application-specific requirements rather than standard sizes. We support custom shafts based on drawings, samples, or defined technical requirements.
Flexible Specifications
- Shaft diameter and length
- Stepped or multi-diameter designs
- Threaded, grooved, or special end features
- Material and heat treatment selection
- Application-defined tolerance requirements
Ø6–60
Diameter (mm)
2000
Max Length (mm)
Submit Drawing for Review
Get technical feedback within 24h
Custom Manufacturing
From sample to series production
What You Need to Provide
To evaluate a custom shaft efficiently, the following information is typically sufficient:
Technical Drawing or Sample
2D/3D drawing or physical reference
Bearing / Mating Component Info
Model or specification for fit verification
Application Context
Operating conditions and environment
This allows technical review before quotation and ensures manufacturability.
Why Choose Our Linear Module Shaft Factory
When sourcing linear module shafts from China, buyers typically focus on consistency, technical clarity, and long-term reliability rather than short-term pricing alone. Our factory is structured to support these expectations.
Focused on Linear Module Shaft Applications
- Specialized in linear motion shaft manufacturing
- Better control over straightness and surface condition
- Optimized for bearing compatibility
Process Stability for Repeat Orders
- Same process applied for repeat production
- Dimensional consistency across batches
- Reduced variation risk over time
Clear Technical Communication
- Direct factory-level technical discussions
- Drawings and tolerances reviewed before quotation
- Avoid misunderstandings during production
Balanced Approach to Cost and Performance
- Process defined by application needs
- Not just lowest cost approach
- Stable performance with cost efficiency
Support from Sample to Production
- Same standards for prototype and series
- Approved samples = production quality
- Reduced requalification work later
Manufacturing, Not Trading
We operate our own production facilities with in-house machining, heat treatment, and finishing capabilities. This means direct control over quality, faster lead times, and the ability to handle technical discussions without intermediaries.
10+
Years Experience
100%
In-House
24h
Response Time
Linear Module Shaft Questions Answered
Common questions from engineers and procurement teams about specifications, compatibility, materials, and ordering process.
Request Engineering Feedback
Share your linear module shaft requirements or drawings. Our engineering team will review and respond within 24 hours.
Direct Contact
Prefer a direct conversation? Reach our engineering team for linear module shaft inquiries.