Mitsubishi Electric RH-3FRH Review: Specs, Price and Applications of the 3 kg SCARA Robot
Updated: 2 days ago
The Mitsubishi Electric RH-3FRH is a 4-axis SCARA robot with a maximum payload of 3 kg, an arm length of 350 / 450 / 550 mm and ±0.010 to ±0.012 mm (X-Y) repeatability, listed from USD 18,500. This review covers its full specifications, design, programming options, applications and price, so you can decide whether it fits your automation project.
Quick Verdict
The Mitsubishi Electric MELFA RH-3FRH is a 4-axis SCARA robot with a 3 kg maximum payload, arm lengths of 350, 450 or 550 mm and X-Y repeatability of ±0.010 to ±0.012 mm. It is built for precise, fast assembly and handling of small parts, with cycle times of 0.41 to 0.51 s. The standard arm is rated IP20, and an ISO class 3 cleanroom version is available. The arm weighs 29 to 32 kg, mounts on the floor and runs on the CR800-D, CR800-R or CR800-Q controller. It is listed from USD 18,500.
Mitsubishi Electric RH-3FRH at a Glance
Maximum payload: 3 kg
Arm length: 350 / 450 / 550 mm
Axes: 4
Repeatability: ±0.010 to ±0.012 mm (X-Y)
Speed: Cycle time 0.41 to 0.51 s; max. composite speed 6,800 to 8,300 mm/s
Weight: 29 to 32 kg
Controller: CR800-D, CR800-R or CR800-Q
Price: from USD 18,500
Mitsubishi Electric RH-3FRH Technical Specifications
The table below lists the published specifications of the Mitsubishi Electric RH-3FRH.
Specification | Mitsubishi Electric RH-3FRH |
Manufacturer | Mitsubishi Electric |
Model | RH-3FRH |
Robot type | 4-axis SCARA robot |
Maximum payload | 3 kg |
Arm length | 350 / 450 / 550 mm |
Axes | 4 |
Repeatability | ±0.010 to ±0.012 mm (X-Y) |
Speed | Cycle time 0.41 to 0.51 s; max. composite speed 6,800 to 8,300 mm/s |
Controller | CR800-D, CR800-R or CR800-Q |
Interfaces | Ethernet 10BASE-T/100BASE-TX/1000BASE-T, USB, RS-422, SSCNET III/H, encoder input, CC-Link, CC-Link IE, PROFINET, EtherNet/IP, EtherCAT, PROFIBUS, DeviceNet, 8 hand inputs, 8 hand outputs |
Starting price | From USD 18,500 |
Detailed Technical Data
4 axes
Max. payload 3 kg (rated 1 kg)
Arm length 350, 450 or 550 mm
Z stroke 150 mm
Repeatability X-Y ±0.010 to ±0.012 mm, Z ±0.01 mm
Cycle time 0.41 to 0.51 s
Max. composite speed 6,800 to 8,300 mm/s
Mass 29 to 32 kg
Mounting floor
Protection IP20 (ISO class 3 cleanroom version)
Controller CR800-D, CR800-R or CR800-Q
Design and Build Quality
The RH-3FRH belongs to the MELFA RH series. Published build data: mass 29 to 32 kg; mounting floor; protection IP20 (ISO class 3 cleanroom version).
Programming and Software
MELFA BASIC and RT ToolBox3
The RH-3FRH runs on the CR800-D, CR800-R or CR800-Q controller and is programmed in MELFA BASIC using Mitsubishi Electric's RT ToolBox3 software, which also provides simulation.
Industrial Communication
Published interfaces are Ethernet 10BASE-T/100BASE-TX/1000BASE-T, USB, RS-422, SSCNET III/H, encoder input, CC-Link, CC-Link IE, PROFINET, EtherNet/IP, EtherCAT, PROFIBUS, DeviceNet, 8 hand inputs and 8 hand outputs.
Mitsubishi Electric RH-3FRH Applications and Use Cases
Typical applications for the RH-3FRH are assembly, electronics handling, machine tending, packaging and inspection.
Assembly
Repeatability of ±0.010 to ±0.012 mm (X-Y) supports fitting, inserting and fastening parts in assembly cells.
Electronics handling
The RH-3FRH is used for electronics handling within its 3 kg payload and 350 / 450 / 550 mm arm length.
Machine tending
The RH-3FRH loads and unloads machine tools, presses and moulding machines within its 350 / 450 / 550 mm arm length.
Mitsubishi Electric RH-3FRH Price and Value
The Mitsubishi Electric RH-3FRH is listed from USD 18,500 on All Things Cobots. The controller, end effectors, safety equipment and integration affect the final price and are quoted separately. Prices are indicative, are not final and may change.
Pros and Cons
Pros
3 kg maximum payload with a 350 / 450 / 550 mm arm length
±0.010 to ±0.012 mm (X-Y) repeatability
Speed: Cycle time 0.41 to 0.51 s; max. composite speed 6,800 to 8,300 mm/s
Wide choice of industrial fieldbus interfaces
Cons
4 axes limit tool orientation compared with a 6-axis arm
Needs safety fencing or equivalent safeguarding
The 3 kg maximum payload includes the end effector
End effectors, safety equipment and integration are quoted separately
Who Should Buy the Mitsubishi Electric RH-3FRH?
The Mitsubishi Electric RH-3FRH fits electronics and small-parts manufacturers that need fast point-to-point motion.
See the full Mitsubishi Electric RH-3FRH product listing on All Things Cobots.
Mitsubishi Electric RH-3FRH FAQ
How much does the Mitsubishi Electric RH-3FRH cost?
The Mitsubishi Electric RH-3FRH is listed from USD 18,500 on All Things Cobots. The price is indicative and may change, and it does not include end effectors, safety equipment or integration.
What is the payload and arm length of the Mitsubishi Electric RH-3FRH?
The RH-3FRH has a maximum payload of 3 kg and an arm length of 350 / 450 / 550 mm.
How accurate is the Mitsubishi Electric RH-3FRH?
Its published repeatability is ±0.010 to ±0.012 mm (X-Y).
How many axes does the Mitsubishi Electric RH-3FRH have?
The RH-3FRH has 4 axes.
How is the Mitsubishi Electric RH-3FRH programmed?
It is programmed in MELFA BASIC using RT ToolBox3, which also provides simulation.
Which controller does the Mitsubishi Electric RH-3FRH use?
It runs on the CR800-D, CR800-R or CR800-Q controller.
How much does the Mitsubishi Electric RH-3FRH weigh?
Published mass 29 to 32 kg.
How can the Mitsubishi Electric RH-3FRH be mounted?
Published installation options: floor.
What is the Mitsubishi Electric RH-3FRH used for?
Typical applications are assembly, electronics handling, machine tending, packaging and inspection.
Specifications and prices are based on manufacturer and distributor information. Prices are indicative, are not final and may change.
