This product is a set of two cams (eccentrics) for the mechanism of the Spektra Xion S rotary machine from FK Irons, with stroke lengths of 1.8mm and 2.5mm. The cam is the part that converts the rotational movement of the motor into the linear movement of the needle, and its stroke length determines how much the needle goes in/out with each full rotation. The set is useful for artists who already work on a Spektra Xion S and want to quickly change the stroke according to technique, without buying an extra machine. Each cam in the set comes factory-equipped with a bearing and screw, ready to mount on the MotorBolt.
What do the numbers 1.8mm and 2.5mm on the cam mean?▾
It represents the stroke length — the distance the needle travels with each full rotation of the motor. A smaller number means a shorter stroke, a larger one means a longer stroke; the choice affects needle behavior, but the final result also depends on the technique, pressure and materials used.
Can this cam set be mounted on any rotary tattoo machine?▾
No — according to product data, the set is compatible with the Spektra Xion S machine from FK Irons. If you have another rotary machine, check before ordering whether it uses the same FK Irons cam system to avoid a part that does not fit mechanically.
What exactly does the package contain?▾
The set contains two cams — one with a 1.8mm stroke and one with a 2.5mm stroke — each factory-equipped with its own bearing and screw, ready to install on the MotorBolt, with no additional parts to purchase separately.
How do I maintain the cam after mounting it?▾
Being an internal mechanical part, it does not require sterilization like a needle or grip, but it deserves periodic checking: retighten the screw if you notice play, wipe dust or oil/ink traces off the housing, and avoid exposing the mechanism to moisture. If you hear unusual noises after installation, stop the machine and check the fastening.
Why would I buy a cam set instead of a new machine?▾
Because if you already work on a Spektra Xion S, changing the cam is a quick and much cheaper solution than purchasing an additional machine when you need a different stroke — you practically adapt the same machine for multiple types of work.
Can I install the cam myself or do I need a technician?▾
If you are familiar with the mechanism of your rotary machine, installation is generally a simple operation: disassemble the cap, change the cam, reassemble. If it is your first time opening the machine, follow the Spektra Xion S manual step by step or ask a technician for help to avoid damaging the mechanism.
