Z94-A Series Automatic Nail Making Machine

Honed Tube & Hydraulic Cylinder Tube – Technical Specifications

Product Overview

Our honed tubes (cylinder tubes) are precision-engineered for hydraulic and pneumatic cylinder applications. Manufactured with advanced honing technology, these tubes deliver high dimensional accuracy, superior surface finish, and excellent straightness, ensuring optimal sealing performance and extended service life.

1. Size Range

• Inner Diameter (ID): 40 mm – 400 mm

• Custom sizes available upon request

2. Material Grades

We offer a wide selection of high-quality steel grades:

• 20# (A106B / ST45 / E255)

• 45# (CK45)

• 16Mn (ST52 / E355)

• 25Mn

• 27SiMn

These materials ensure high strength, durability, and excellent machinability for industrial applications.

3. Precision & Tolerances

• Inner Diameter Tolerance: H8

• Straightness: 0.2 – 0.5 mm/m

• Thickness Tolerance: ±5%

4. Surface Finish

• Roughness: ≤ 0.4 μm

• Smooth internal surface for better sealing and reduced friction

5. Supply Conditions

Available in multiple processing conditions:

• BK (Cold Finished / Hard)

• BK+S (Cold Drawn & Stress Relieved)

These conditions ensure dimensional stability and improved mechanical performance.

6. Chrome Plating (Optional)

• Chrome Thickness: 15 – 30 microns

• Enhances:

  • Corrosion resistance

  • Wear resistance

  • Surface hardness

7. Mechanical Properties

8. Typical Size List (ID × OD in mm)

Common sizes include:

• 40×50, 50×60, 60×75

• 80×100, 100×120, 125×150

• 150×180, 180×220, 200×250

• 250×300, 300×350, 350×370

Custom sizes are available based on project requirements.

9. Key Advantages

• High precision H8 tolerance for cylinder applications

• Excellent surface roughness for sealing performance

• Strong mechanical properties for heavy-duty use

• Optional chrome plating for extended durability

• Wide material selection for various industrial environments

10. Applications

Honed tubes are widely used in:

• Hydraulic cylinders

• Pneumatic cylinders

• Construction machinery

• Mining equipment

• Agricultural machinery

• Industrial automation systems