SR-071A Light Force Motorized Servo Weld Head – Opposed Electrodes

Formerly known as Model 71

Designed for use in either automation or benchtop welding, the SR-071A weld head offers stable, repeatable electrode force for a wide range of resistance welding applications. The SR-071A weld head is equipped with an easy-to-program, state-of-the-art servo motor controller for precise programming of electrode position and speed for up to 32 different weld schedules. Opposed, inline electrode configuration.

  • Controlled, fast, repeatable servo motor actuation
  • Extremely low-end force control (0.25 lb)
  • Remote control I/O and PC communication
  • Displacement and force options
  • “Soft Touch” part clamping
  • Unitip and blade thermode option

Technical Specifications

Actuation Type Motorized
Power Rating 3000 A
Electrode Configuration Opposed
Electrode Alignment Offset
Electrode Type ES0400 Series 0.125" Dia
Force range0.25 - 16 lb
1 - 71 N
0.11 - 7.26 kg
Stroke 1.5 in (38.1 mm)
Automation Ready Yes
Size (H x D x W) 11.8 in x 8.5 in x 3.14 in (300 mm x 216 mm x 80 mm)
Weight7.7 lb (3.5 kg)



  Title Version Model Revision  
Drawings (Weld Heads & Actuators – 3D Model (STEP)) 71 Assembly Download