What it is and what it drives
The Omron R88M-K5K030H-BS2 is a 5 kW cylindrical servo motor from the Accurax G5 family, rated for 3000 rpm on a 240 VAC three-phase supply. It carries an integral holding brake and an incremental encoder, with key and tap on the shaft for positive load coupling. This is a compact-frame servo sized for medium-power motion axes — indexing tables, rotary knives, winding spools, or any application where a 5 kW motor with a brake and encoder feedback is called for. The cylindrical body (rather than a square flange) suits it to machines where the motor mounts into a bore or a clamp ring.
Lifecycle reality — end-of-life (hot)
For a BOM line that depends on this exact order code, the path is last-time-buy or surplus sourcing. We can quote the part to order against an RFQ through independent supply channels; availability and current pricing are confirmed at quote time. No official Omron successor order code is listed in the lifecycle record for this motor.
What the ratings mean for fit
The 5 kW power rating at 3000 rpm gives a continuous torque around 16 N·m — enough to drive a moderate-load spindle or a servo-driven pump directly, without a gearbox, in many applications. The 240 VAC three-phase supply is standard for industrial servo systems in North America and parts of Asia; verify your drive output matches this voltage class. The integral brake (Yes) means the motor holds its position when power is removed — essential for vertical-axis loads or any axis where the machine must not drift on a power loss. The incremental encoder provides speed and position feedback to the servo drive; it does not retain absolute position after a power cycle, so a homing sequence is required on startup. Key and tap on the shaft allows a positive mechanical lock between the motor and the load coupling — no set-screw-only attachment. This is standard on larger servo motors and matters when reversing torque or rapid acceleration cycles are present.
Deployment context
This servo motor is designed to be paired with an Omron Accurax G5 servo drive (R88D-KN series) for closed-loop speed and position control. The drive supplies the 240 VAC three-phase power and processes the incremental encoder signals. The motor cable and encoder cable use smart connectors that reduce wiring time and eliminate pin-for-pin mapping errors. The cylindrical shape means the motor mounts into a bore or a split clamp rather than a flat flange plate. Check your machine's mounting geometry — a cylindrical body requires a corresponding circular cutout and a clamping mechanism, not a bolt-on square pattern.