AKN ZMA 50/92

akn ZMA 50/92 Precision Lock Nut

Description

The akn ZMA 50/92 is a high-quality precision lock nut, essential for applications requiring high axial holding forces and accuracy. It is designed to secure bearings on shafts, preventing axial movement and maintaining preload. The axial locking mechanism, using set screws, provides a secure and reliable connection that resists loosening from vibration and dynamic loads, making it ideal for precision machinery.

Specifications

• Manufacturer: akn
• Type: ZMA 50/92
• Thread Size: M50x1.5 mm
• Outer Diameter: 92 mm
• Width: 21 mm
• Material: Steel
• Locking Method: Axial locking with set screws

Label Info

• Brand: akn
• Model: ZMA 50/92
• Additional Markings: KM12 50/92, akn-HSP

Application

This precision lock nut is commonly used in high-precision applications such as machine tool spindles, ball screw supports, robotics, and other machinery where rotational accuracy and rigidity are critical.

Country of Origin

Germany

CO2 Impact

Choosing this surplus component saves approximately 1.5 kg of CO2 compared to producing a new one. This saving is equivalent to the emissions from driving a car for 7.5 kilometers.

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 correct tightening torque for the akn ZMA 50/92?

The tightening torque depends on the specific application, bearing preload, and lubrication. It is crucial to consult the machine’s technical manual or akn’s official documentation. Generic values should not be used for precision applications.

What is the function of the set screws on this lock nut?

The set screws are used for axial locking. After the nut is tightened to the correct preload, these screws are tightened against the shaft thread to prevent the nut from backing off or loosening due to vibration or operational stress.

Is a special tool required to install this lock nut?

Yes, a hook spanner (or C-spanner) that fits the four slots on the nut’s outer diameter is required for proper installation and tightening. Using improper tools like a hammer and chisel can damage the nut and the bearing.

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Last Update: Friday, March 13, 2026