CNC Busbar Bending Machine HQ400-1200B
Ideal for LV/HV switchgear factories, panel shops, transformer plants and box-type substations requiring high-precision busbar bending.
Quick Summary
The HQ400-1200B is the CNC bender to specify when Thai LV/HV switchgear, panel or box-type substation work must hold a repeatable angle: 400 kN on a servo main drive bends copper bar up to 15 x 200 mm flat and 12 x 120 mm vertical, holding ±0.15 mm gauge accuracy, ±0.3° angle accuracy and ±0.02 mm Y-axis repeatability. Its closed bending frame spreads force evenly, which is why it holds tolerance where open-frame benders drift, and it ships with CAD/CAM software so a busbar drawing goes straight to the machine. Gauge length is 1,200 mm; for longer bars take the 2,000 mm model.
Ideal for LV/HV switchgear factories, panel shops, transformer plants and box-type substations requiring high-precision busbar bending.
- Servo main drive, stable and unaffected by temperature
- Closed bending structure with even force and high strength
- CNC + PLC with our own CAD/CAM software
- 1,200 mm gauge length, ±0.15 mm accuracy
- ±0.3° bending accuracy, ±0.02 mm Y-axis repeat
- Double linear guides and ball screw for quiet, smooth operation
| Nominal force | 400 kN |
| Max gauge length | 1,200 mm |
| Max flat bending | 15×200 mm |
| Max vertical bending | 12×120 mm |
| Gauge accuracy | ±0.15 mm |
| Bending accuracy | ±0.3° |
| Hydraulic cylinder stroke | 250 mm |
| Main motor power | 5.5 kW |
| Y-axis repeat accuracy | ±0.02 mm |
| Machine size | 3,500×1,450×1,850 mm |
| Machine weight | 3,100 kg |
| Control | CNC + PLC + servo |
Reference Figures by Test Condition
Values below are the manufacturer's nominal figures for the stated condition. Each paragraph is written as condition + value + comparison baseline so it can be quoted on its own. Baseline machines are other models in the same LTMC catalogue; these are factory specification figures, not third-party laboratory reports.
Bending accuracy under servo drive
Test condition: CNC bending of 15 x 200 mm flat and 12 x 120 mm vertical copper bar with a servo main drive and a closed bending frame. Result: ±0.15 mm gauge accuracy, ±0.3° angle accuracy and ±0.02 mm Y-axis repeat positioning. Baseline: the 3-in-1 CNC models (503U-3-C and 803U-3-C) publish ±1° bending with ±0.5° repeat, so the HQ400-1200B holds roughly 3x tighter angle tolerance.
Gauge length and machine size
Test condition: bending bars within a 1,200 mm gauge on a 250 mm hydraulic cylinder stroke. Result: 3,500 x 1,450 x 1,850 mm machine at 3,100 kg with a 5.5 kW main motor. Baseline: the HQ400-2000B reaches 2,000 mm gauge length, so the 1200B covers 60% of that length while saving 200 kg (6%) and 800 mm of floor length.
Drive stability across temperature
Test condition: repeated bending through a full shift as hydraulic oil temperature changes. Result: the servo main drive delivers stable force that is not affected by oil temperature, and double linear guides with a ball screw keep motion smooth and quiet. Baseline: conventional hydraulic bending loses consistency as oil warms, which is the drift the servo drive is specified to remove.
Can it do U-bends?
Yes. It supports flat bends, U-bends and vertical bending with preloaded programs.
Can it integrate with CNC punching lines?
Yes. It supports integration with our HQ600-SP punching and shearing machines.
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