OMRON R88M-1M40030T-BS2 1S-Series Middle Inertia AC Servo Motor

USD 281.35

400W 1S middle inertia servo motor with 3000 rpm speed, integrated holding brake, and 23-bit absolute encoder. Reliable 1.27 Nm torque performance for Z-axis robotic actuation and high-speed CNC positioning.

SKU Omron-R88M-1M40030T-BS2 Category
Industrial Automation > Motion Control > Servo Motors

OMRON R88M-1M40030T-BS2 1S-Series Middle Inertia AC Servo Motor

Model Identifier R88M-1M40030T-BS2
Official Part Number R88M-1M40030T-BS2
GTIN Standard NA

Technical Overview

The OMRON R88M-1M40030T-BS2 is a professional-grade 1S-series AC servo motor engineered for precise industrial motion control. Operating on a 230 VAC single-phase supply, this middle inertia motor delivers a rated output of 0.4 kW at a rotational speed of 3000 rpm. It features a battery-free 23-bit absolute encoder for high-resolution positioning without the maintenance overhead of battery replacements. Equipped with a built-in holding brake and a shaft with a key and tap, it provides robust mechanical coupling and safety for vertical or high-load applications. It is specifically designed to integrate seamlessly with OMRON's EtherCAT 1S servo drives.

Key Features

  • Middle inertia 1S-Series design for balanced load control
  • 23-bit high-resolution absolute encoder (battery-free)
  • Integrated 24-VDC holding brake for load retention
  • Keyed shaft with tap for secure mechanical transmission
  • Seamless integration with EtherCAT network topologies via 1S servo drives
  • Compact 60 mm flange footprint

0.4 kW (400 W) Rated Output, 230 VAC Single Phase, 1.27 Nm Rated Torque, 4.5 Nm Peak Torque

Technical Specification Matrix

ParameterValue
Rated Output0.4 kW (400 W)
Rated Speed3000 r/min
Rated Torque1.27 Nm
Peak Torque4.5 Nm
Drive Supply Voltage230 V Single Phase
Encoder TypeAbsolute without battery
Encoder Resolution23 Bit
Integrated BrakeYes (24-VDC)
Flange Size Square (LC)60 mm
Shaft Diameter14 mm
Product Weight1900 g

Industrial Applications

1. Automated Packaging and Bottling Machinery

Utilized in high-speed rotary indexing tables and conveyor feeds where bottles or packaged goods must be moved swiftly without spilling or tipping.

Problem Solved

Varying mechanical loads during start/stop sequences can cause positioning errors. The middle inertia profile and high peak torque (4.5 Nm) allow the motor to accelerate and decelerate smoothly while maintaining stability against inertial mismatches.

Middle Inertia4.5 Nm Peak TorqueRotary IndexingKinematic Stability

2. Z-Axis Actuation in Cartesian Pick-and-Place Robots

Drives the vertical axis of a gantry or Cartesian robot handling materials up to several kilograms.

Problem Solved

In the event of a power outage or emergency stop, vertical axes will drop due to gravity, potentially damaging the payload or machinery. The integrated holding brake immediately locks the shaft, while the absolute encoder ensures the precise coordinate is known upon power restoration without needing a homing cycle.

Z-AxisHolding BrakeAbsolute EncoderPosition RetentionCartesian Robot

3. CNC Router and Milling Machine Positioning

Coupled directly to ball screws on the X or Y axes of light-to-medium duty CNC machinery to position the cutting head.

Problem Solved

Machine vibration and cutting resistance can cause micro-slipping at the coupling. The 14 mm keyed shaft provides a rigid, no-slip mechanical connection to the ball screw, and the 23-bit encoder offers sub-micron feedback to the EtherCAT drive to maintain strict cutting tolerances.

14 mm Keyed Shaft23-Bit ResolutionBall Screw CouplingEtherCAT Servo ControlCNC Positioning
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