Complete guide: Inkmachines nr. 126 - Retainer Nut - 1pcs
The #126 retainer nut is an original Ink Machines component for the Scorpion X1 machine. Although it is a small part, it plays a critical safety role: it secures the assemblies that generate needle movement—swash plate, counterweight, and bearing—onto the motor shaft and prevents them from moving axially during operation. It is intended for artists and technicians who maintain, disassemble, or reassemble a Scorpion X1 machine.
How to use
- Turn off and disconnect the machine, then disassemble it according to the Scorpion X1 manual to access the motor shaft and the assemblies attached to it.
- Inspect the old nut and the shaft thread: look for worn or damaged threads, a tool-deformed head, and any axial play in the components.
- Clean the thread of debris and verify it is smooth, free of any marks that could hinder proper threading.
- Position the components on the shaft in the correct order, then thread the retainer nut by hand first to avoid cross-threading.
- Tighten firmly with the proper tool—the Ink Machines precision kit #90 contains the specific tool—with a secure but not excessive force.
- After tightening, check that the assemblies have no axial play and that the machine starts and runs smoothly.
- Recheck the nut tightening at the first service after installation and, thereafter, at every major machine service.
Tips from us
- Keep 2-3 spare nuts—they are small parts and easy to lose during a service.
- Check the nut tightening at every deep cleaning or machine service, not just when a problem occurs.
- Use the correct tool (Ink Machines precision kit #90) to avoid deforming the nut head with improper tools.
- If the nut loosens repeatedly between services, find the cause (worn thread, damaged component) instead of retightening it each time.
- If in any doubt about the condition of the thread or head, replace the nut—it is an inexpensive part with a critical role in the mechanical assembly.
Warning: This is a mechanical safety part. A nut with worn threads or that is loose can allow axial movement of the components on the motor shaft, leading to vibration, altered needle stroke, and in severe cases, mechanical failure. Tighten firmly, but without excessive force and without using torque-controlled tools, to avoid deforming the head or thread. Do not apply Loctite or other thread lockers without explicit manufacturer instructions—they can make the nut impossible to remove during future service. Replace the part at any sign of thread wear or head deformation.
Frequently asked questions
Which machine is this nut compatible with?▾
The #126 retainer nut is an original Ink Machines part for the Scorpion X1 machine. For other models (e.g., Scorpion X2), check specifications with Ink Machines before ordering—do not assume interchangeability without confirmation.
How do I know when to replace the nut?▾
Typical signs are: the thread no longer tightens firmly, the nut loosens frequently, the head is deformed by tools, or inspection reveals visible thread wear. At any such sign, replace the part.
What tool do I need to tighten it correctly?▾
The safest option is the Ink Machines precision kit #90, which contains the specific tool. Tightening must be firm but controlled; improper tools risk deforming the nut head.
Can I reuse the old nut when reassembling?▾
Yes, if the thread is in good condition and the head is not deformed. Inspect it at every disassembly and, if you have any doubt about its condition, install a new one—the risk is not worth it for such an inexpensive part.
Is the nut made of steel or aluminum?▾
It is made of high-strength steel with a precision thread, specifically designed to withstand repeated tightening and cyclic operating forces without deforming.
What exactly is its role in the machine?▾
It secures the motion-generating components—swash plate, counterweight, and bearing—onto the motor shaft in their correct positions and prevents them from moving axially under the vibrations and forces during operation.
Product description
Inkmachines nr. 126 - Retainer Nut
Inkmachines Part No. 126 — Retainer Nut is the original retainer nut for the Scorpion X1 machine, the fixing element that locks components on the motor shaft in the correct position. The retainer nut prevents axial displacement of assemblies mounted on the motor shaft (such as swash plate, counterweight, bearing) under cyclic forces and operating vibrations. Manufactured from high-strength steel with precision thread, the nut provides secure and repeatable tightening. The thread must be in perfect condition — a worn thread that no longer maintains tightness can allow component displacement on the shaft, resulting in stroke modification, vibrations, and potentially serious mechanical defects. The nut is checked at every service and replaced at any sign of thread wear or head deformation. At just 5.00EUR, it is a critical safety part at minimal cost. Compatible with Scorpion X1. The retainer nut is an apparently simple component but with an essential safety role in the Scorpion mechanical assembly. Without a functional retainer nut, all components mounted on the motor shaft would be free to shift axially, transforming a precision machine into an unpredictable and potentially dangerous instrument. The precision thread of the original Inkmachines nut perfectly matches the motor shaft thread, ensuring secure tightening without risk of seizing or damage. The high-strength steel material is chosen to withstand the necessary tightening torques and cyclic operating forces without deformation. As good engineering practice, check the retainer nut tightness at every deep machine cleaning session. The nut is a consumable part that should be preventively replaced at any sign of thread wear.
Frequently Asked Questions
