Which has more payload, the ABB IRB 1100 or the Mitsubishi MELFA ASSISTA?

The Mitsubishi MELFA ASSISTA has more payload at 5 kg versus 4 kg.

Which reaches farther?

The Mitsubishi MELFA ASSISTA has more reach at 910 mm versus 580 mm.

Which is more precise?

The ABB IRB 1100 holds tighter repeatability at ±0.01 mm.

Should I choose the ABB IRB 1100 or the Mitsubishi MELFA ASSISTA?

Match the pick to the job. The ABB IRB 1100 is a 6-axis industrial arm at 4 kg and 580 mm. The Mitsubishi MELFA ASSISTA is a collaborative arm at 5 kg and 910 mm.

Head to head

ABB IRB 1100 vs Mitsubishi MELFA ASSISTA

A specification duel across payload, reach, precision, and footprint, with a plain read on which arm suits which job.

ABB2 of 5 categories

ABB IRB 1100

Small precise arm for assembly and dispensing

Mitsubishi2 of 5 categories

Mitsubishi MELFA ASSISTA

Collaborative arm for shared assembly workspaces

Specification duel

Green marks the stronger figure. Unconfirmed specs are shown but not scored.

4 kg

Payload

5 kg

580 mm

Reach

910 mm

±0.01 mm

Repeatability

±0.03 mm

Axes

21 kg

Robot mass

32 kg

2018

Introducedreference

2020

The verdict

The first question here is not specs but the cell: the Mitsubishi MELFA ASSISTA is a collaborative arm designed for reduced-speed operation near people (fenceless only where an application risk assessment allows it), while the ABB IRB 1100 is a 6-axis industrial arm that runs behind a guard at full speed. They run different controllers, the ABB IRB 1100 on the OmniCore and the Mitsubishi MELFA ASSISTA on the CR800-05VD, so whichever platform your team already programs and stocks parts for is a real tiebreaker. For a tight or overhead cell, the ABB IRB 1100 lists Any angle mounting while the Mitsubishi MELFA ASSISTA lists Floor and Ceiling mounting, which the other does not. Both are aimed at assembly and machine tending, with the ABB IRB 1100 stretching to dispensing.

ABB IRB 1100

Very tight repeatability for small-parts work
Compact size fits benchtop cells
SafeMove options for shared workspace
Fast for short-cycle assembly tasks

Mitsubishi MELFA ASSISTA

Power and force limiting on every joint
Simple hand-guided teaching
Compact footprint for benchtop cells
Integrates with Mitsubishi's factory automation stack

Full ABB IRB 1100 page Full Mitsubishi MELFA ASSISTA page

Common questions

Which has more payload, the ABB IRB 1100 or the Mitsubishi MELFA ASSISTA?: The Mitsubishi MELFA ASSISTA has more payload at 5 kg versus 4 kg.
Which reaches farther?: The Mitsubishi MELFA ASSISTA has more reach at 910 mm versus 580 mm.
Which is more precise?: The ABB IRB 1100 holds tighter repeatability at ±0.01 mm.
Should I choose the ABB IRB 1100 or the Mitsubishi MELFA ASSISTA?: Match the pick to the job. The ABB IRB 1100 is a 6-axis industrial arm at 4 kg and 580 mm. The Mitsubishi MELFA ASSISTA is a collaborative arm at 5 kg and 910 mm.