Product Overview
The Omron R88M-K3K020F-S2 is a robust, high-performance AC servo motor belonging to the renowned G5 Series (OMNUC G5). Designed for demanding industrial automation, this 3 kW motor delivers a perfect balance of high torque, precision control, and durability. With a rated speed of 2000 rpm and a maximum torque of 14.3 Nm, it is engineered to drive heavy loads with exceptional accuracy.
Featuring an IP67 protection rating (with a 20-bit serial encoder), this motor is built to withstand harsh environments, including dust, water jets, and oil. The "K3K020F" model indicates a 3 kW power rating, 2000 rpm speed, and a keyed shaft configuration, while the "S2" suffix denotes a standard specification set suitable for general-purpose high-inertia applications. It is the ideal choice for applications requiring rigid positioning and smooth motion profiles.
Key Features & Benefits
- High Torque Density: Delivers a maximum torque of 14.3 Nm in a compact, lightweight frame (approx. 10.9 kg), allowing for high dynamic response and rapid acceleration/deceleration.
- Superior Environmental Resistance: Achieves IP67 protection (IEC standard) for the motor body and encoder, making it suitable for use in washing machines, food processing lines, and outdoor machinery without additional enclosures.
- High-Precision Feedback: Equipped with a standard 20-bit incremental encoder (1,048,576 pulses/rev), providing ultra-fine resolution for precise positioning and smooth low-speed operation (minimized torque ripple).
- Standardized Connectivity: Features a connector-type terminal box (Connector) for easy wiring and maintenance, compatible with the R88D-KT series G5 drives.
- Keyed Shaft (Model "K"): Comes with a standard keyway on the shaft for secure coupling transmission, ideal for high-load inertia applications.
- Global Compliance: Certified with CE, UL, CSA, and TUV marks, ensuring safe operation and easy integration into global machinery exports.
Technical Specifications
| Parameter |
Specification |
| Product Series |
OMNUC G5 Series (R88M-K) |
| Model |
R88M-K3K020F-S2 |
| Motor Type |
AC Servo Motor (Incremental Encoder) |
| Rated Output Power |
3.0 kW (approx. 4.0 HP) |
| Rated Speed |
2000 rpm |
| Max. Torque |
14.3 Nm |
| Rated Voltage |
3-phase 380–480 V AC (400 V Class) |
| Encoder Resolution |
20-bit (1,048,576 pulses/rev) |
| Insulation Resistance |
≥100 MΩ (500 VDC megger) |
| Dielectric Strength |
AC 1,500 V for 1 minute (between windings and case) |
| Protection Rating |
IP67 (Motor body & Encoder) |
| Shaft Configuration |
Keyed shaft (with screw) |
| Terminal Type |
Connector (MIL specification compliant) |
| Weight |
Approx. 10.9 kg (24.0 lbs) |
| Operating Temperature |
0 to 40 °C (32 to 104 °F) (Non-freezing) |
| Certifications |
CE, UL, cULus, CSA, TUV, RoHS |
System Integration
The R88M-K3K020F-S2 is designed to be paired with the R88D-KT series servo drives. This combination forms a complete servo system supporting advanced control modes such as Position Control, Speed Control, and Torque Control. It is also compatible with Omron’s 1S servo configuration software for easy auto-tuning and parameter setup.
- Recommended Drive: R88D-KT08H / KT15H / KT30H (depending on control mode and power supply requirements).
- Cable Requirements: Requires specialized servo motor power cables (e.g., R88A-CA1A series) and encoder cables.
Typical Applications
- Heavy-Duty Packaging: Form-fill-seal machines, case packers, and palletizers requiring high torque at start-up.
- Machine Tools: CNC spindle drives (via belt/gear) or axis feed drives for milling and grinding machines.
- Material Handling: Conveyor systems, automated guided vehicles (AGVs), and hoisting mechanisms.
- Plastic & Rubber: Injection molding machines and extruders requiring precise pressure and speed control.
- General Machinery: Industrial robots (4-6 axis), printing presses, and textile machinery.
Ordering Information
- Manufacturer: OMRON Corporation
- MPN: R88M-K3K020F-S2
- Packaging: Factory sealed carton.
- Note: This model usually includes a brake (holding brake) mechanism. Verify the "Brake" specification if ordering a holding-brake-less version (often suffix -Z or specific model codes).
