Product images © Mitsubishi Electric, shown for identification. Official source ↗.
Documents
Mitsubishi Electric
MELFA RH-20FRH
Mitsubishi Electric's heaviest FRH SCARA robot — 20 kg payload, 1200 mm reach and ±0.01 mm repeatability, built for high-force assembly and large-part placement in automotive and medical production.
Full specifications
Performance
How much it lifts, how far it reaches, how precisely it repeats.
- Payload
Maximum mass the robot can carry at the wrist flange, including the gripper/tool. Higher means it can handle heavier parts.
- 20 kg 79th pct in class
- Reach
Maximum horizontal distance from the base axis to the wrist — defines the size of the work area. Higher means a larger envelope.
- 1,200 mm 93th pct in class
- Repeatability
How close the robot returns to the same taught point on repeated tries (ISO 9283, ±). Lower is better — tighter precision.
- 0.01 mm 59th pct in class
- Axes (DOF)
Number of independently driven joints / degrees of freedom. 6 is standard for articulated arms; 4 for SCARA/palletizers; 7 adds elbow redundancy.
- 4
- Max TCP speed
Top linear speed of the tool centre point. Higher means faster cycle times.
- 5,000 mm/s 26th pct in class
Motion range & speed
Per-axis travel limits and rotational speeds.
Motion range and maximum speed per joint.
| Axis | Range | Max speed |
|---|---|---|
| J1 | -170° to 170° | — |
| J2 | -153° to 153° | — |
| J4 | -360° to 360° | — |
Physical
Size, mass and how it mounts.
- Robot weight
Mass of the manipulator (arm) without controller. Lighter eases mounting and mobile use; heavier often means stiffer/higher payload.
- 55 kg
- Mounting
Orientations the robot can be installed in (floor, ceiling/inverted, wall, tilted, mobile base).
- floor, ceiling
Power & controller
Electrical supply and the control cabinet that drives it.
- Power supply
Required input voltage / phase for the controller.
- Single-phase 200 V AC
- Controller
The control cabinet / unit that runs the robot.
- CR800
Environment
Conditions it can operate in — dust, water, temperature, cleanliness.
- IP rating (arm)
Ingress protection of the body against dust/water (IEC 60529). First digit = dust, second = water. Higher resists harsher environments.
- IP20 0th pct in class
- Operating temp
Ambient temperature range for normal operation.
- 0 to 40 °C
- Cleanroom class
ISO 14644-1 cleanroom rating the robot is certified for. Lower number = cleaner environment.
- 3 ISO 10th pct in class
Safety
Standards met and collaborative-operation capability.
- Collaborative
Whether the robot is designed to work safely next to people without fencing (power-and-force-limited).
- No
- Safety standards
Certified safety standards (ISO 10218-1, ISO/TS 15066) and functional-safety level (PLd/PLe, SIL2/3).
- ISO 10218-1
Control & software
Programming, languages and ecosystem.
- Programming
How the robot is taught: pendant, hand-guiding (lead-through), block/flow-chart, scripting, offline simulation.
- teach-pendant, offline-programming
- Languages
Native robot programming language(s) — e.g. KRL (KUKA), RAPID (ABB), URScript (UR), INFORM (Yaskawa).
- MELFA BASIC VI
- Teach pendant
The handheld programming/jog device supplied.
- R87TB / R56TB pendant
- Simulation
Offline programming / simulation software for the robot.
- MELFA-Works (RT ToolBox3)
- Offline programming
Whether programs can be built and validated offline in a digital twin before deployment.
- Yes
Connectivity & I/O
Signals, fieldbuses and tooling interfaces.
- Fieldbus
Industrial networks supported for PLC/cell integration (PROFINET, EtherNet/IP, EtherCAT, Modbus TCP, CC-Link, etc.).
- PROFINET, EtherNet/IP, CC-Link IE, Modbus TCP
Industrial Robotics Hub — industrialroboticshub.com
Safety certifications
- ISO 10218-1 — the primary industrial-robot safety standard covering design and construction requirements
Specifications sourced from Mitsubishi Electric official datasheet ↗. Specs last verified 2026-07-16.
Owner reviews
Real, first-hand feedback from people who run the Mitsubishi Electric MELFA RH-20FRH. Sign in with LinkedIn so we know reviews come from actual operators. You choose whether to post under your name or anonymously.
We only read your name, photo and headline. Posting anonymously hides all of that from public view.
Frequently asked questions
What is the payload of the Mitsubishi Electric MELFA RH-20FRH? +
The Mitsubishi Electric MELFA RH-20FRH has a maximum payload of 20 kg.
What is the reach of the Mitsubishi Electric MELFA RH-20FRH? +
The Mitsubishi Electric MELFA RH-20FRH has a maximum reach of 1,200 mm (1.20 m).
What is the repeatability of the Mitsubishi Electric MELFA RH-20FRH? +
The Mitsubishi Electric MELFA RH-20FRH has a pose repeatability of ±0.01 mm (ISO 9283), making it highly accurate for precision work.
How many axes does the Mitsubishi Electric MELFA RH-20FRH have? +
The Mitsubishi Electric MELFA RH-20FRH is a 4-axis scara robot.
What is the Mitsubishi Electric MELFA RH-20FRH used for? +
The Mitsubishi Electric MELFA RH-20FRH is typically used for assembly, pick-and-place, screw-driving, dispensing.
What controller does the Mitsubishi Electric MELFA RH-20FRH use? +
The Mitsubishi Electric MELFA RH-20FRH runs on the CR800 controller.
What is the IP rating of the Mitsubishi Electric MELFA RH-20FRH? +
The Mitsubishi Electric MELFA RH-20FRH arm carries an IP20 ingress-protection rating.
