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TECNA 3156 Scissor-Type Weld Gun — 53 kVA Air-Operated Single-Phase AC, Built-In Control

TECNA 3156 Scissor-Type Weld Gun — 53 kVA Air-Operated Single-Phase AC, Built-In Control

TECNA 3156 scissor-type (X-type) suspended weld gun — 53 kVA, air-operated, single-phase AC with built-in weld control. Maximum welding current of 26,000 amps and up to 1,922 lbs of electrode force at the standard arm.

Description

The TECNA 3156 is a 53 kVA single-phase AC scissor-type (X-type) suspended weld gun with air-operated actuation, built for production spot welding. It delivers a maximum welding current of 26,000 amps, with electrode force from 1,922 lbs (855 daN) on the shortest arm down to 550 lbs (245 daN) at full 40.55 in. (1030 mm) reach (8 bar). The 3156 is the built-in-control version, with an integrated TE470/TE480 microprocessor control in the handle; its separate-control twin is the 3157.

Features

  • 53 kVA single-phase AC transformer with water-cooled, epoxy-resin-coated windings (ISO 5826).
  • Integrated TE470/TE480 microprocessor weld control: 63 weld programs, constant-current mode, pre-weld/slope/pulse/post-weld functions.
  • Gyro suspension on sealed bearings with rotation lock for accurate maneuverability with a TECNA balancer.
  • Long 10.04–40.55 in. (255–1030 mm) arm range; adjustable working stroke plus temporary extra (retraction) stroke for hard-to-reach welds.
  • Fully water-cooled copper secondary; lube-free chromium-plated cylinder and shaft; cooling-circuit valves for easy electrode changes.
  • Supplied with earth-leakage switch (30 mA); ground-fault unit available on request.
  • Recommended balancer: TECNA 9414.

Installation Requirements

  • US stock supply: 440 V / 60 Hz (400 V / 50 Hz on request).
  • Delayed fuses 100 A; cable section 0.04 in² (25 mm²) at L=30 m.
  • Compressed air: 116 psi (8 bar); consumption 5/11 Nm³ per 1000 spots (short/long stroke).
  • Water cooling: 127 gal/h (480 l/h).
  • Net weight 174 lbs (79 kg) with cables, hoses, and suspension, without arms.

Additional information

Weight 174 lbs
Gun Type

Scissor-Type (X-Type)
Arm Configuration

LLG
Control Type

Built-In
Standard Control Unit

TE470/TE480
Nominal Power 50% (kVA)

53
Max Welding Power (kVA)

147
Max Welding Current (A)

26000
Thermal Current 100% (A)

5300
No-Load Secondary Voltage (V)

7.1
Supply

440 V / 60 Hz
Mains Cable (L=30m, 400 V)

0.04 in² (25 mm²)
Delayed Fuses (400 V)

100 A
Arms Centerline

12.28 in (312 mm)
Insulated Arms Connection Ø

1.85 in (47 mm)
Non-Insulated Arms Conn. Ø

1.93 in (49 mm)
Gyro Suspension Ø

11.58 in (294 mm)
Arm Length Range

10.04–40.55 in (255–1030 mm)
Max Electrode Force

1922 lbs (855 daN)
Max Elec Force 8 bar (Min Arm)

1922 lbs (855 daN)
Max Elec Force 8 bar (Max Arm)

550 lbs (245 daN)
Working Stroke

0.20–0.79 in (5–20 mm) min arm; 0.20–2.36 in (5–60 mm) max arm
Max Stroke

1.97–2.76 in (50–70 mm) min arm; 7.09–9.84 in (180–250 mm) max arm
Compressed Air

116 psi (8 bar)
Air Consump /1000 (Short)

5 Nm³
Air Consump /1000 (Long)

11 Nm³
Air Supply Hose Ø

0.51 in (13 mm)
Water Cooling Flow

127 gal/h (480 l/h)
Max Weldable Ø

0.71 in (18 mm)
Max Steel Thickness (Min Arm)

0.16 + 0.16 in (4 + 4 mm)
Power Supply

Actuator Type

Product Type

Supply Notes

440 V / 60 Hz (US stock; 400 V / 50 Hz on request)

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