Choosing a servo kit for a CNC lathe retrofit means balancing torque, encoder resolution, and whether the mechanical pieces will actually match your machine. The Yaskawa 2-axis AC servo kit, listed at USD 599.00, packages two motors, two drives, and two couplings in one takeout set. Here's how to decide if it fits your project.
Quick Verdict
This kit makes the most sense for a machinist who is retrofitting a lathe and wants a matched axis set: one X-axis motor with a brake, one Z-axis motor without a brake, plus servo-grade couplings for 25mm ballscrews. At USD 599.00 for two complete axis channels, it's a practical starting point for someone who can handle the wiring and tuning of industrial components. It's not a ready-to-bolt-on solution for a specific machine, so be prepared to verify mounting and compatibility yourself.
Who It Suits
If you are rebuilding a lathe and need both X and Z axis servos, this kit gives you two matched 850W motors (5.4 Nm torque, 1500 rpm) and the correct drives to run them. The X-axis motor includes a brake, which is useful for holding vertical or gravity-loaded axes. The Z-axis motor has no brake, which is fine for horizontal movement. The included stainless-steel leaf couplings for 25mm ballscrews are a nice bonus, since matching couplings to ballscrew shafts can be a separate hassle.
What Stands Out From the Listed Details
The motors are Japanese-made Yaskawa, while the drives were built by LG Industrial in Korea under license from Yaskawa. That's a meaningful detail: you're getting Yaskawa motor performance with drives that were designed to the same spec, not a random pairing. The encoder counts differ slightly - the X motor has a 5000 ppr incremental encoder, and the Z motor has 6000 ppr. That difference is worth noting if you want identical resolution on both axes, but both are solid for typical lathe work.
The kit was removed from a working Hyundai KIT30 CNC lathe, so the motors and drives were functioning as a set. Because it is used, you'll want to inspect the connectors and shafts when it arrives and plan for any tuning or parameter setup. The package includes the two drives, two motors, and two couplings, which is the core of a two-axis servo system.
Meaningful Trade-Offs
The main trade-off is that this is a used industrial kit, not a new integrated servo system. You are taking on the work of verifying that the motor mounting bolt pattern, shaft sizes, and drive power requirements fit your retrofit. The listing specifies the motors are 850W, 5.4 Nm, 1500 rpm with incremental encoders, so you can check those numbers against your lathe's axis requirements.
Another consideration is the encoder mismatch. If your control expects the same feedback resolution on both axes, the 5000 vs 6000 ppr difference may require adjustment. Also, the drives are LG-branded (built under Yaskawa license), so you'll need to be comfortable working with that hardware, not the more common Yaskawa-branded drive models.
The Bottom Line
If your retrofit is centered on a lathe with two axes and you need servos with a brake on X and no brake on Z, this Yaskawa 2-axis kit at USD 599.00 is a balanced, cost-effective core package. The included couplings and the fact that both axes were removed working from a lathe add to its practicality. Just go in knowing it's a used industrial set that you'll need to wire, tune, and mechanically adapt to your machine. For a hobbyist or small shop doing a CNC conversion, it's a solid candidate to evaluate against your specs.
Yaskawa 2 axis AC servo kit, MOTORS + DRIVES, LATHE X and Z, removed working
This is a matched pair of Yaskawa AC servo motors and LG-built drives removed from a working Hyundai KIT30 lathe. The X-axis motor has a brake and a 5000 ppr encoder; the Z-axis motor has no brake and a 6000 ppr encoder. Both are 850W with 5.4 Nm torque and 1500 rpm. In addition, you get two stainless-steel leaf couplings sized for 25mm ballscrews. At USD 599.00, it's a complete two-axis starting point, provided you are comfortable with used industrial gear and can confirm that the shaft and bolt patterns match your machine.
