ROUND LINEAR SHAFT

I. SUJ2 ROUND LINEAR SHAFT

The SUJ2 round linear shaft is manufactured from SUJ2 steel, a high-carbon chromium steel grade specified under the Japanese Industrial Standard JIS G4805. SUJ2 steel is widely used in the production of bearings, shafts, rollers, and precision mechanical components that require high wear resistance and high rolling load capacity.

Thanks to its high carbon and chromium content, SUJ2 steel achieves high hardness, excellent wear resistance, and long service life after heat treatment (quenching and tempering). This makes it particularly suitable for linear guiding applications and repetitive load-bearing components where high precision and dimensional stability are required.

Typical chemical composition of SUJ2 steel (according to JIS G4805):

• Carbon (C): 0.95 – 1.10%
• Chromium (Cr): 1.30 – 1.60%
• Silicon (Si): 0.15 – 0.35%
• Manganese (Mn): ≤ 0.50%
• Phosphorus (P) and Sulfur (S): ≤ 0.025%

With these characteristics, SUJ2 steel is commonly used in the manufacture of round linear shafts for precision mechanical systems.

SUJ2 round linear shaft used for linear guiding systems

II. ADVANTAGES OF SUJ2 ROUND LINEAR SHAFTS

Compared to conventional steel grades, SUJ2 round linear shafts offer clear advantages in industrial applications. SUJ2 round linear shaft products consistently provide the following outstanding features:

• High surface hardness, reaching approximately 58 – 62 HRC after heat treatment
• Excellent wear resistance, minimizing surface degradation over time
• High geometric stability, with minimal deformation under load
• Suitable for continuous operation systems requiring high stability and precision

Precisely machined SUJ2 round linear shaft surface, suitable for linear guiding systems

Ngan Anh Phat Company specializes in supplying genuine SUJ2 round linear shafts compatible with round linear bearings, flanged and non-flanged linear bushings of Taiwan origin in the Vietnamese market. We supply round linear shafts with diameters ranging from Ø3 to Ø120 and customized lengths upon request.

III. TECHNICAL SPECIFICATIONS OF SUJ2 ROUND LINEAR SHAFTS

The SUJ2 round linear shafts supplied by Ngan Anh Phat are manufactured according to clearly defined technical standards to ensure accurate assembly and stable operation under various working conditions.

1. Shaft Diameter Sizes

Our SUJ2 round linear shafts are available in a wide range of diameters, suitable for different load requirements and system scales. Sizes are clearly categorized, making selection and installation more convenient in practice.

Small diameter group (Ø3 – Ø20 mm):
Suitable for light-load motion mechanisms, 3D printers, mini robots, and small-scale guiding systems.

Medium diameter group (Ø25 – Ø100 mm):
Widely used in CNC machines, automation equipment, production lines, and linear guiding systems with medium to heavy loads.

Large diameter group (Ø120 mm):
Suitable for large-scale industrial machinery, lifting equipment, and systems operating under high load conditions.

SUJ2 round linear shafts available in various diameters to meet diverse requirements

In addition to standard sizes, Ngan Anh Phat also supplies SUJ2 round linear shafts customized in diameter and length to flexibly meet specialized design and installation requirements.
Products are always available in stock with a wide range of diameters and lengths, ensuring fast response to customer demands.

2. Accuracy – Tolerance

The SUJ2 round linear shafts supplied by Ngan Anh Phat are manufactured with a diameter tolerance of ±0.01 mm, ensuring uniform dimensions and excellent roundness. This tolerance level fully meets the requirements of high-precision and high-stability applications, enabling long-term reliable system operation.

3. Hardness

SUJ2 round linear shafts are produced from high-carbon alloy steel and heat-treated according to standard processes, achieving a surface hardness of 58 – 62 HRC. This hardness level is ideal for linear guiding systems requiring high durability and stability.

At this hardness level, SUJ2 round linear shafts offer the ability to:

• Withstand high loads while maintaining geometric stability under pressure
• Provide excellent wear resistance, maintaining surface accuracy during operation
• Balance hardness and toughness, ensuring durability and good impact resistance

IV. INDUSTRIAL APPLICATIONS OF ROUND LINEAR SHAFTS

SUJ2 round linear shafts are used in linear guiding systems that require high precision, stability, and wear resistance, including:

• Motion shaft assemblies in CNC machines and precision machining equipment
• Automation systems, robots, and repetitive motion mechanisms
• 3D printers and precision mechanical devices
• Guiding systems operating continuously and requiring long-term durability and stability

SUJ2 round linear shafts used in 3D printers to ensure stable and precise motion

V. BENEFITS OF PURCHASING ROUND LINEAR SHAFTS FROM NGAN ANH PHAT

Ngan Anh Phat supplies SUJ2 round linear shafts with strictly controlled specifications, ensuring suitability for real-world production requirements.

Customers working with Ngan Anh Phat will receive:

• Products guaranteed to meet technical specifications and application requirements
• A wide range of in-stock products, enabling fast response to customer needs
• Diverse size options, making selection easy for different machine types
• Custom machining services, including length cutting and finishing according to drawings
• Professional consultation and guidance in selecting suitable round linear shafts

Ngan Anh Phat aims to provide effective linear guiding solutions that enhance system stability and extend machinery service life.

Contact Ngan Anh Phat today for consultation on selecting suitable round linear shafts and to receive detailed pricing information.

HOTLINE: +84 251 3857 563 (102) or contact via Zalo numbers displayed on the website for quick support
EMAIL: sales@ngananhphat.com
WEBSITE: www.ngananhphat.com

VISIT AND EXPERIENCE OUR PRODUCTS DIRECTLY AT OUR OFFICE:
D3, Dong Khoi Street, Group 23, Quarter 35, Tam Hiep Ward, Dong Nai City.

THE COMPANY IS COMMITTED TO DELIVERING COMPLETE SATISFACTION TO OUR CUSTOMERS.

Read more:

• Some Round Linear Shaft Products
• How to Choose the Right Round Linear Shaft for Your Application