The SRA133L-01 is a six-axis articulated AC servo robot in Nachi's SRA series, built for spot welding in automotive body assembly and also used for machine tending, material handling, palletizing and dispensing. It carries a 133 kg payload, reaches 2,951 mm and holds ±0.15 mm position repeatability, and is floor mounted. Motion is programmed through the Nachi FD controller, which also provides servo gun control for spot welding.
What is the repeatability of the Nachi SRA133L-01?
±0.15 mm, per SRA133L (nachirobotics.com).
How many axes does the Nachi SRA133L-01 have?
6, per SRA133L (nachirobotics.com).
How much does the Nachi SRA133L-01 weigh?
980 kg, per SRA133L (nachirobotics.com).
Study notes
The SRA series is driven by Nachi FD controllers; no FD controller entry exists in the reference list, so the controllers field is left empty.
SRA series payloads span 100 kg to 240 kg, with floor-mount, invert-mount and long-reach models over 3 metres.
Allowable static load torque for the SRA133L-01: 800 N·m on axes 4 and 5, 400 N·m on axis 6.
Allowable moment of inertia for the SRA133L-01: 76 kg·m² on axes 4 and 5, 38 kg·m² on axis 6.
Forearm flange allowable load: 45 kg, or 90 kg at maximum.
The axis 3 working envelope is printed as two values in the three-model table (-127.7 to +150° and -133.4 to +150°), so the SRA133L-01 value cannot be determined; only its speed is recorded.
No maximum speed is listed for axis 6.
Integrated spot weld timer is available in AC and DC versions, programmed from the teach pendant, with weld result storage for traceability.
Pressure calibration is supported up to 10 points across the spot welding range.
A hollow-arm series routes spot welding utilities (cooling water, weld power, signals, servo gun cables) inside the arm.
Aluminium spot welding solution is quoted at more than 400 welds between electrode dress cycles.
Applications listed: machine tending, material handling, palletizing, spot welding, dispensing.
Safety
Permitted installation height is not higher than 1,000 m above sea level; if used higher, the permitted temperature is affected by height.
Ambient humidity limit is 85% RH maximum, with no condensation allowed.
Noise: 79.6 dB A-weighted equivalent sound level measured at maximum payload and maximum speed to ISO 11201.
Installation is floor mounting only.
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