The KR QUANTEC prime is geared towards providing the perfect balance between payload and reach. When it comes to spot welding, it is the market leader. The prime achieves outstanding cycle times due to its robustness and high acceleration rates.

The KR QUANTEC prime is virtually unbeatable when it comes to robustness. It has a maximum reach of 2,500 millimeters with a payload of 240 kilograms. Yet it is as streamlined and light as its other family members. As a result, the prime robots are the new performance benchmark in spot welding. As shelf-mounted robots, they are optimized to minimize space requirements and that extends the economical reach range. The foundry variants offer a solution for applications involving dusty, wet and hot environments.


KR QUANTEC prime data overview

KR 90 R3700 prime K KR 120 R3500 prime K KR 150 R3300 prime K
Category High Payloads (80-300 kg) High Payloads (80-300 kg) High Payloads (80-300 kg)
Construction type Console Console Console
Extension 1 Standard Standard Standard
Extension 2 Standard Standard Standard
Version environment Standard Standard Standard
Environment version extension Standard Standard Standard
Payload 90 kg 120 kg 150 kg
Total load 140 kg 170 kg 200 kg
Maximum reach 3701 mm 3501 mm 3301 mm
Number of controlled axes 6 6 6
Position repeatability ±0,06 mm ±0,06 mm ±0,06 mm
Weight 1204 kg 1192 kg 1184 kg
Mounting positions Floor Floor Floor
Ambient temperature 10 °C to + 55 °C 10 °C to + 55 °C 0 °C to + 0 °C
Controller KR C4 KR C4 KR C4
Protection class IP 65 IP 65 IP 65
Protection class inline wrist IP 65 IP 65 IP 65



Wide spectrum

The KR QUANTEC prime achieves the perfect balance between payload and reach and opens up a wide range of potential applications. Yet spot welding is the prime’s specialty.

Fast cycle times

The KR QUANTEC prime stands out due to its robust design, yet it is extremely lightweight. It is optimized to achieve fast cycle times by way of high rates of acceleration. This is how it delivers outstanding process results.

Low maintenance requirements

The KR QUANTEC prime fits into every concept. It only requires a small amount of floor space. Even the maintenance outlay has been reduced to a minimum.

Energy-efficient and robust

The KR QUANTEC prime has a very small ecological footprint. Its compact base frame provides a firm footing and a hole pattern that is consistent with the rest of the KR QUANTEC series.


  • Measuring, testing and inspection
  • Plastics processing machines
  • Metal die-casting machines, foundry works
  • Palletizing
  • Forging plants
  • Handling for other machines
  • Other handling operations
  • Cutting machine tools
  • Packaging and order picking
  • Laser welding
  • Other welding processes
  • Soldering
  • Spot welding
  • Arc welding
  • Application of adhesives and sealants
  • Other coating operations
  • Machining
  • Other machining operations
  • Laser cutting
  • Waterjet cutting
  • Fastening
  • Inserting, mounting
  • Other assembly/disassembly operations


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