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Omron R88M-G40030H-S2-Z AC Servo Motor 400W 3000rpm G5 Series with Safety… — front view

Omron R88M-G40030H-S2-Z G-Series Servo Motor, 400 W, 200 VAC, 3000 rpm, with Brake and Safety Companion

SKU: R88M-G40030H-S2-Z

USD 188.00

Omron R88M-G40030H-S2-Z G-series AC servo motor, 400 W, 200 VAC, 3000 rpm, with 24 VDC electromagnetic brake and oil seal. The "-Z" suffix denotes the safety companion variant, paired with a -Z suffix Accurax G5 drive.

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Product Overview

The Omron R88M-G40030H-S2-Z is a 400 W, 200 VAC, 3000 rpm member of the Accurax G5 G-series servo motor family, with electromagnetic brake and oil seal, in the safety companion variant. The "R88M-G" prefix denotes the older G-series motor in the G5 family — distinct from the more recent R88M-K series, although both are part of the Accurax G5 platform.

The "H" in the code denotes the 200 V class. "40030" is 400 W at 3000 rpm. The "-S2" suffix indicates a smooth shaft with brake, and the trailing "-Z" is the safety companion variant: the motor is mechanically and electrically identical to the non-Z R88M-G40030H-S2, but it is qualified by Omron to operate with the -Z safety drives in functional-safety applications.

The oil seal (the "S2" also covers the oil-seal option in this code line) is important for gear-coupled or oil-lubricated applications where the bare shaft would otherwise be exposed to lubricant or coolant. The 24 VDC brake is spring-applied and electrically released — fail-safe on power loss.

This motor is a good fit for safety-rated vertical axes and press / shear applications where the load must be held when the servo is off, and where the application needs STO / SS1 / SLS from the drive. The matching drive is the R88D-KN04H-ECT-Z (400 W, 400 V, EtherCAT, safety) — note the voltage class may differ (G-series motor is 200 V, the typical Z drive is 400 V); Omron's selection tables map motor to drive explicitly.

Key Features

  • 400 W continuous output at 3,000 rpm rated speed
  • 200 VAC class
  • Smooth shaft with 24 VDC electromagnetic brake (spring-applied)
  • Oil seal for gearbox- or oil-lubricated mounting
  • 20-bit incremental encoder (compatible with the G5 G-series drive)
  • Qualified as the safety companion variant for -Z suffix drives
  • 60 mm frame (square flange)
  • IP65 body, IP67 shaft seal
  • SKU: R88M-G40030H-S2-Z
  • Series: Accurax G5 (R88M-G, G-series)
  • Voltage: 200 VAC
  • I/O: 400 I/O

Best-Fit Applications

  • Vertical-axis applications with safety-rated drive pairing
  • Press and stamping machine feed axes
  • Gear-coupled axes in oil-lubricated gearboxes
  • Safety-rated Z-axis on robot cells
  • Replacement of legacy G-series motors in existing G5 installations

Buying Checklist

  • Confirm the matching drive from the Omron selection table — the -Z motor pairs with a specific -Z drive, not with a non-Z drive
  • For vertical / Z-axis duty, the brake is essential — never run a vertical axis on a brake-less motor
  • The oil seal adds drag and reduces continuous torque by a small amount — account for that in sizing
  • Verify the 200 V motor class against the drive's voltage class — G-series motors are 200 V class, but they are commonly driven by 400 V G5 drives via the encoder interface
  • If you are designing a new system, prefer the R88M-K series over the older R88M-G series

Technical Specifications

Series Accurax G5 (R88M-G, G-series)
Model R88M-G40030H-S2-Z
Motor type AC servo motor, medium-inertia
Rated output 400 W
Rated speed 3,000 rpm
Rated voltage 200 VAC class (200–230 VAC)
Rated torque 1.27 N·m
Peak torque 3.82 N·m (3× rated)
Encoder Incremental serial encoder (20-bit compatible)
Shaft Smooth
Oil seal Yes
Brake 24 VDC spring-applied electromagnetic brake
Brake holding torque ≥ rated torque
Frame size 60 mm square flange
Shaft diameter 14 mm
Mass ≈ 1.4 kg (with brake)
Protection IP65 (body), IP67 (shaft)
Insulation class Class F
Operating temperature 0 °C to +40 °C
Safety variant Qualified companion to -Z suffix drives

FAQ for R88M-G40030H-S2-Z

What is the difference between R88M-G and R88M-K?
Both are Accurax G5 servo motors. The R88M-G is the older G-series (medium-inertia); the R88M-K is the newer K-series (low-inertia). They are not interchangeable: the encoder interface, shaft dimensions and mounting details differ. For new designs, prefer the R88M-K series.
Why is the motor marked "-Z"?
The trailing -Z is the safety companion designation. The motor itself is mechanically and electrically identical to the non-Z R88M-G40030H-S2, but Omron has qualified it as suitable for use with -Z suffix safety drives in functional-safety applications.
What drive pairs with this motor?
An -Z suffix Accurax G5 drive at the matching power: R88D-KN04H-ECT-Z (400 W, 400 V, EtherCAT, safety) is the common choice. Always confirm with the Omron selection table for your specific safety function.

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