Linear Shaft Ø20 W20 H6 / 990 mm - AI-Powered Review

Precision linear guide shaft 20 mm (W20 H6) length 990 mm - AI-Powered Review

Technical description - Linear Shaft Ø20 W20 H6 / 990 mm

The linear shaft Ø20 W20 H6 / 990 mm is a precision ground and hardened guide rod designed for linear motion systems. The designation indicates:

• W20 - shaft diameter 20 mm

• H6 - precision tolerance for diameter

• 990 - total shaft length in mm

Key features and benefits

• Diameter 20 mm with H6 tolerance - perfect fit for LM, LME, KH, KB linear bearings, eliminating clearance.

• Induction hardened and precision ground - surface hardness 60-64 HRC with roughness around Ra 0.3 µm ensures smooth running.

• Hardened layer >1.5 mm - guarantees wear resistance during continuous use.

• Material: Cf53 / CK55 steel - strong yet machinable for end modifications if needed.

• Straightness and roundness tolerance - ensures vibration-free, smooth operation in linear guides.

• Wide industrial use - CNC machines, automation systems, robotics, measuring equipment.

Typical specifications

• Diameter: Ø20 mm

• Length: 990 mm

• Tolerance: H6

• Hardness: 60-64 HRC

• Surface roughness: ~Ra 0.3 µm

• Hardened depth: >1.5 mm

Applications

• CNC machine guides

• Industrial automation systems

• Robotics and assembly lines

• Measuring and testing equipment

• Modular constructions with linear motion

Installation and operation

• Clean the shaft and bearings thoroughly before assembly

• Ensure proper shaft seating within H6 tolerance housings

• Avoid impacts or bending during installation to protect hardened layer

• Use seals or covers in dusty environments

• Regular lubrication recommended for long service life

❓ FAQ (EN)

Q: What does W20 H6 / 990 mean?
A: Shaft with diameter Ø20 mm (W20), precision tolerance H6, and length 990 mm.

Q: Is this shaft suitable for LM20 linear bearings?
A: Yes - it is designed to fit LM and LME series linear ball bearings with Ø20 mm bore.

Q: What hardness does the shaft have?
A: Typically surface hardened to 60-64 HRC with hardened depth above 1.5 mm.

Q: Where can this shaft be used?
A: In CNC machines, automation, robotics, and precision linear guide applications.

Q: Is it resistant to wear?
A: Yes - the hardened and ground surface ensures durability and minimal friction.