Makino Z274W1025000 – “High‑Quality Replacement Component” (locknut, MF25×1.5P) GHC-16

*Please read full description prior to purchase*

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Visit our page https://www.gearheadsurplus.com

SELLING "AS IS - WHERE IS" AS DESCRIBED

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• Precision Bearing Lock Nut M25x1.5P (or similar variants like Nikki Locknut MF25X1.5P Okuma) refers to a precision locknut with M25 × 1.5 thread pitch (MF25×1.5P).
• These locknuts are used in mechanical assemblies to clamp and secure bearings or threaded spindles, ensuring the assembly doesn’t loosen under vibration or rotational loads.

🧩 What It Replaces

• The Makino part number Z274W1025000 is not publicly documented on Makino’s general support site or parts store search. Makino typically assigns internal part numbers like this for specific service parts within assemblies (e.g., spindles, drawbars, bearing locking systems) that aren’t listed with public cross‑references.
• Given the thread size and type (MF25×1.5P), it almost certainly replaces a locknut used in a spindle or drawbar assembly on a Makino machine — not a general fastener in a random location.

🛠️ Likely Application in Makino Machines

• On most CNC machines (including Makino’s), precision locknuts of this size are used in the spindle assembly or tool clamp/drawbar to preload bearings or to secure a threaded component that must maintain very precise axial positioning.
• Makino sells spindle drawbar kits and spindle spare parts for models like A55, A77 and other vertical/horizontal machining centers. Those kits typically include items such as locknuts, nuts, bearings, and related fasteners — so Z274W1025000 is likely the OEM designation for the locknut in one of those assemblies. 

Note to buyer:

1. Review all photos carefully as they are part of the description per eBay policy.
2. Items that are untested, for parts or repair, or unknown condition are sold as is and are non-returnable.
3. Items are sold as pictured. If it is not shown in the pictures it doesn't come with the item (i.e. power cords, attachments, tooling, etc.)
4. Most listings at the end include a GH and then a number for example (GH119) OR (A19) it is an internal stock reference number and not part of the item's description.

Thanks, GearheadSurplus

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