Motor ratings and what they mean for fit
The Omron R88M-K5K020C-OS2 is a 5 kW, 2000 rpm servo motor from the Accurax G5 series, running on 480 VAC three-phase supply. The 5 kW rating tells you the continuous mechanical output it can deliver to the load — sized for a machine axis that needs that kind of torque at speed. The 2000 rpm base speed is typical for a medium-speed servo application; if your axis needs to spin faster or slower at rated torque, this motor's torque curve will govern the usable range. It carries an absolute encoder, so on power-up the drive knows the rotor position without needing a home sequence — saves cycle time on multi-axis machines that index to a known position after a power loss. The cylindrical body with key and tap means it mounts with a standard shaft key and a threaded hole in the shaft end for a bolt-on coupling or pulley. The oil-tight seal keeps lubricant mist and cutting fluid out of the bearing cavity — a real plus out here in the grease on a machining center or press line. No brake on this variant. If your vertical axis needs holding torque at power-down, you'll need an external brake or a different motor with the brake option. The absence of a brake also means no extra rotor inertia from the brake armature, so acceleration and deceleration are snappier for horizontal-axis applications.