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Omron R88M-K20030H-S2 AC Servo Motor 200W 3000rpm 200V G5 Series Key Shaft with… — front view

Omron R88M-K20030H-S2 Accurax G5 Servo Motor, 200 W, 200 VAC, 3000 rpm, Keyed Shaft with Brake

SKU: R88M-K20030H-S2

USD 166.00

Omron R88M-K20030H-S2 Accurax G5 K-series AC servo motor, 200 W, 200 VAC, 3000 rpm, keyed shaft with 24 VDC electromagnetic brake, for 200 W servo axes requiring positive shaft drive.

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Product Overview

The Omron R88M-K20030H-S2 is a 200 W, 200 VAC, 3000 rpm member of the Accurax G5 K-series servo motor family, with a keyed shaft and a 24 VDC electromagnetic brake. The "R88M-K" prefix is the current K-series G5 motor; "20030" is 200 W at 3000 rpm; "H" the 200 V class; "-S2" the keyed-shaft-with-brake variant.

The K-series is the current low-inertia G5 motor family, replacing the older G-series. It uses a 20-bit incremental encoder (1,048,576 counts/rev) which, combined with the G5 drive's high-resolution feedback loop, gives smooth low-speed performance and tight position holding.

The keyed shaft is for applications requiring positive shaft drive — gear-coupled loads, lead-screw couplings, and other high-torque connections where a set-screw on a smooth shaft would be marginal. The 24 VDC brake is spring-applied, electrically released — fail-safe on power loss.

Matching drive: R88D-KN02H-ECT (200 W, 200 V or 400 V, EtherCAT) or R88D-KT02H (200 W, 200 V, analog/pulse). For safety, use the -Z suffix drives. The 50 mm frame keeps the motor compact for small-format machines.

Key Features

  • 200 W continuous output at 3,000 rpm rated speed
  • 200 VAC class
  • 20-bit incremental serial encoder (high resolution)
  • Keyed shaft for positive drive under high torque
  • 24 VDC spring-applied electromagnetic brake
  • 50 mm frame (square flange)
  • IP65 body, IP67 shaft seal
  • Insulation class B
  • SKU: R88M-K20030H-S2
  • Series: Accurax G5 (R88M-K)
  • Voltage: 200 VAC
  • I/O: 200 I/O

Best-Fit Applications

  • 200 W servo axes requiring positive shaft drive
  • Gear-coupled or lead-screw-coupled loads
  • Vertical-axis / Z-axis applications where load holding is required
  • Packaging and assembly machine axes
  • Replacement of older G-series motors in existing G5 installations

Buying Checklist

  • Match the motor to the drive's voltage class (200 V) and power rating (200 W)
  • For a smooth-shaft version, use the -S2 suffix variant (no keyway) — keyed shafts add cost and need a keyway in the coupling
  • For EtherCAT, use the R88D-KN02H-ECT; for analog/pulse, use the R88D-KT02H; for safety, add -Z to either
  • For vertical-axis duty, the brake is essential — never run a vertical axis on a brake-less motor
  • The 20-bit encoder is matched to the G5 drive's high-resolution feedback — do not use this motor with the older SMX/SMY drives

Technical Specifications

Series Accurax G5 (R88M-K)
Model R88M-K20030H-S2
Motor type AC servo motor, low-inertia
Rated output 200 W
Rated speed 3,000 rpm
Rated voltage 200 VAC class (200–230 VAC)
Rated torque 0.64 N·m
Peak torque 1.91 N·m (3× rated)
Encoder 20-bit incremental serial
Shaft Keyed
Shaft diameter 11 mm
Brake 24 VDC spring-applied electromagnetic brake
Brake holding torque ≥ rated torque
Frame size 50 mm square flange
Mass ≈ 0.8 kg (with brake)
Protection IP65 (body), IP67 (shaft)
Insulation class Class B
Operating temperature 0 °C to +40 °C

FAQ for R88M-K20030H-S2

What drive pairs with this motor?
The R88D-KN02H-ECT (EtherCAT) or R88D-KT02H (analog/pulse) in the 200 W 200 V family. For safety, order the -Z variant.
Why is the shaft keyed?
Keyed shafts are for applications where positive drive is required: gear couplings, lead-screw couplings, and any high-torque load where a set-screw on a smooth shaft would be marginal. The keyway can introduce a small imbalance at very high speeds, but at 3,000 rpm this is not an issue.
Is this motor compatible with the older R88D-GT drives?
No. The R88M-K is the K-series G5 motor and pairs only with the K-series G5 drives (R88D-KN, R88D-KT). For the older SMX/SMY drives, you need the older R88M-G or M-series motors.

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