NSK NAH20ANZ-K

NSK Linear Guide Block NAH20ANZ-K

Description

The NSK NAH20ANZ-K is a high-performance linear guide block designed for precision motion applications. Part of the NAH series, it is known for its high load capacity and rigidity. This unit is designed for 20mm guide rails and comes with a slight preload (Z) for reduced clearance and increased accuracy. The ‘K’ designation signifies it is equipped with NSK’s K1 lubrication unit, ensuring long-lasting, maintenance-free performance.

Specifications

• Manufacturer: NSK
• Series: NAH
• Size: 20 (for 20mm rail)
• Block Type: AN (Square type)
• Preload: Z (Slight Preload)
• Feature: K – Equipped with NSK K1 lubrication unit
• Condition: New in original sealed packaging

Application

Ideal for use in machine tools, industrial robots, semiconductor manufacturing equipment, and other applications requiring highly accurate and rigid linear motion.

Country of Origin

Made in the United Kingdom.

CO2 Impact

By purchasing this pre-owned component, you contribute to the circular economy and have helped avoid approximately 1.2 kg of CO2 emissions associated with the production of a new unit.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the main advantage of the ‘K’ suffix on the NAH20ANZ-K?

The ‘K’ suffix indicates the presence of an NSK K1 lubrication unit. This is a porous, oil-impregnated resin that provides a continuous supply of lubricant to the ball bearings, ensuring long-term maintenance-free operation and extending the service life of the guide block.

Can this NAH series block be used on a rail intended for the newer NH or NS series?

No, the NAH series has different mounting dimensions and profiles compared to the newer NH and NS series. It is crucial to use this block only with a compatible NAH series 20mm rail to ensure proper function and accuracy.

What type of preload does the ‘Z’ in the model number indicate?

The ‘Z’ signifies a slight preload. This means the internal clearance between the balls and the raceway is eliminated, resulting in increased rigidity and higher accuracy, which is suitable for applications that require precise positioning and minimal deflection under load.

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Friday, March 13, 2026