FAG ZMA65/105 precision locknut

FAG ZMA65/105 is a reference of precision locknut, within Bushings and sleeves. Request a quote for ZMA65/105 via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.

FAG ZMA series precision locknuts fix bearings axially on spindle shafts in machine tools and other precision assemblies where a standard nut cannot achieve the rotation accuracy and clamping force required. Their bearing faces are machined to tight tolerances to avoid deforming the bearing when tightened. MR Accesorios Industriales quotes them from Buenos Aires, Argentina.

In the ZMA designation, the first number is the nominal thread size and the second, after the slash, is the outer diameter of the nut: ZMA60/98 is a nut for M60 thread with 98 mm outer diameter, and ZMA100/140 one for M100 thread with 140 mm outer diameter.

These nuts lock without a safety washer, using their own locking elements, so the assembly remains secure without grooving the shaft. They are tightened with a hook wrench or pin wrench, and the tightening torque is adjusted according to the bearing and assembly instructions provided by the equipment manufacturer.

They are used on spindles in lathes, mills and machining centers, on rotary tables, on grinding-machine spindles and on any shaft carrying matched precision angular-contact bearings. In these assemblies, the nut defines the preload and stability of the system over time.

When replacing a precision nut, verify the complete thread (size and pitch), the space around the shaft, the type of wrench it accepts and the locking system. When dismounting a spindle, it is wise to replace the nut together with the bearings if marks appear on the bearing faces.

To quote FAG ZMA precision locknuts, send us the complete code or the thread size by WhatsApp or email and we will quote them for you. We respond as soon as possible.