KUKA KR 20 R3100

The KR 20 R3100 pairs a 20 kg payload with a 3101 mm reach, so one base can cover wide machine openings or several fixtures without repositioning. KUKA positions it for large-envelope handling, where a shorter arm would need a second unit to reach the same spread. That geometry fits material handling and machine tending across stations that sit far apart.

It holds 0.05 mm repeatability, and the record calls that solid even at full extension. On a long arm, steady placement matters most at the outer edge of the work envelope, where the arm is stretched farthest from its base. Packaging and dispensing both lean on that consistency.

Mounting options include floor, ceiling, wall, and angle positions, and the record flags the ceiling mount as a way to save floor space. Overhead or angled placement lets the arm work down into a cell and keep the surface below clear. That helps when space around existing machines is tight.

At 549 kg it's a heavy frame, and the considerations note the long arm needs a rigid mounting structure. A solid base plate and level foundation keep the reach accurate once the arm is moving. Teams weighing other arms in this reach class can also open Yaskawa GP50 and Kawasaki RS020N.

The KR C5 controller runs the arm, and the body carries an IP65 rating. The considerations also flag slower cycle times at full reach than on shorter arms, so throughput planning should account for the long travel.

The standout stays the 3101 mm reach on a 20 kg payload frame, which lets a single arm cover a wide envelope. Strengths call that reach exceptional for its payload class. For a 20 kg robot, that envelope is the defining number.