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This is a single-axis motion kit: a 12.0 Nm closed-loop NEMA 34 stepper motor paired with a StepperOnline CL86T V4.1 closed-loop driver, plus 1.7 m motor and encoder extension cables and an RS232 tuning cable. The encoder feedback lets the driver correct for lost steps, so the motor holds position and torque better under load than an open-loop NEMA 34 of similar size. It suits hobby and small-shop CNC routers, laser cutters, carving machines and automation builds that need one strong, accurate axis. Compared with open-loop kits it costs more and needs tuning, but it is far less prone to stalling mid-cut; compared with AC servo systems it is simpler and cheaper but slower to settle and less precise at very high speeds.
In stock
Lowest price we've seen: $234.88 on Nov 10 at VXB.com Bearings. Tracked across 1 store since Nov 10.
Owners of StepperOnline closed-loop kits generally report fewer lost steps and steadier torque than open-loop setups, and praise the build quality. Complaints center on setup and tuning effort and on the need for a strong power supply.
This is a single-axis closed-loop stepper kit built around a NEMA 34 motor rated at 12.0 Nm and a CL86T V4.1 closed-loop driver. The motor provides encoder feedback for precise positioning.
The closed-loop design reduces missed steps and improves torque under load. The kit suits 3D printers, CNC routers, carving machines, dispensers and other automation setups. The driver is rated for 24 to 80V DC and 4.1 to 8.2A.
