Double Head Tube Bender — SW38CNC / SW38NC / SW50NC
Double-head synchronous pipe bending; two pipes formed in one operation; symmetrical pipe fittings double efficiency; microcomputer/PLC control.
When To Choose A Double-Head Pipe Bending Machine？
If you produce symmetrical tubular components such as chair armrests, left and right supports for fitness equipment, or motorcycle pedals, using a single-head pipe bending machine to process them in two stages can easily lead to inconsistencies in left and right angles, lengths, and dimensions. Operating two machines simultaneously increases labor costs and may result in rework due to matching errors.
Zhuoran SW38NC, SW38CNC, and SW50NC double-head pipe bending machines can simultaneously bend both ends or two symmetrical tubular components in a single clamping operation.
This not only shortens the production cycle but also ensures that both sides are processed using the same parameters, reducing human error and improving product matching accuracy and batch consistency.
Based on actual production experience, when your daily output reaches several hundred pieces or more, or when the product requires high precision in left and right symmetry, a double-head pipe bending machine is usually more cost-effective than adding a single-head machine and operators.
If you also need to frequently process tubular components of different lengths, it is recommended to choose a model with convenient pitch adjustment and a higher degree of automation to reduce changeover and manual adjustment time.
Double-head Pipe Bending Machine Parameters
| Parameter | SW38NC | SW38CNC | SW50NC |
|---|---|---|---|
| Machine Type | Microcomputer Double-Head Hydraulic | Full-Automatic PLC Servo | Microcomputer Double-Head Hydraulic |
| Bending Diameter × Wall Thickness | Φ38mm × 2mm | Φ38mm × 2mm | Φ50mm × 2mm |
| Max Bending Radius | R200mm | R200mm | R250mm |
| Min Bending Radius | R≥1.5D | R≥1.5D | R≥1.5D |
| Max Bending Angle | 190° | 190° | 190° |
| Double Bending Center Range | 150-2400mm | 190-1500mm | 300-2000mm |
| Center Distance Adjustment Mode | Manual Adjustment | Automatic Servo Motor Adjustment ⭐ | Manual Adjustment |
| Control System | Microcomputer Control | Mitsubishi PLC Control | Microcomputer Control |
| Max System Pressure | 12MPa | 12MPa | 14MPa |
| Motor Power | — | 5.5kW | 7.5kW |
| Machine Dimensions | 3200×1200×1600mm | 3200×1200×1600mm | 3000×1650×1400mm |
| Machine Weight | 1400kg | 1400kg | 2000kg |
Features and Applications of Double-head Pipe Bending Machine
SW38NC: Classic Double-Head Pipe Bending Machine
If you primarily produce office chair armrests, furniture side frames, fitness equipment supports, or motorcycle pedals, the SW38NC can solve the problem of inconsistent angles when bending two pipes separately. The simultaneous double-head action allows for symmetrical bending in a single clamping, reducing repetitive positioning, manual matching, and assembly rework.
This machine has a mature structure and wide applicability, making it more suitable for production scenarios with relatively fixed product specifications and large batches. For lightweight workpieces such as furniture armrests, a rotating structure can be selected; for longer pipes or those with unstable centers of gravity, a non-rotating structure is recommended to improve processing stability.
SW38CNC: Multi-Pipe Double-Head Pipe Bending Machine
When you need to switch between multiple symmetrical pipe lengths daily, traditional manual movement of the bending head consumes a lot of machine setup time and is prone to dimensional deviations due to manual positioning. The SW38CNC uses servo automatic adjustment of the bending center; you only need to input the target dimension on the control interface, and the machine will automatically complete the position adjustment.
It is more suitable for factories with varying order batches, numerous product models, or high requirements for repetitive positioning. When multiple model changes are needed daily, the value of servo adjustment lies not only in faster speed but also in reducing reliance on skilled operators, ensuring greater consistency across different batches.
SW50NC: Large Diameter Double-Head Pipe Bending Machine
When processing the main frame of fitness equipment, motorcycle frames, outdoor furniture, or large-diameter chair frames, ordinary double-head models may experience insufficient power, machine vibration, or unstable bending angles. The SW50NC, with its more powerful hydraulic system and heavier machine structure, is better suited for continuous batch processing of large-diameter pipes.
This equipment is particularly suitable for symmetrical components such as treadmill uprights and elliptical machine handrails, helping to improve assembly interchangeability and reduce matching errors. If your pipe fittings are long, first confirm the double-bend center range; for long pipe fittings, consider the SW38NC first, while the SW50NC is more suitable for large-diameter and high-load products.
Common Advantages of the Three Double Head Tube Benders
1. Quick Die Change Adjustment
The die changer features a quick-adjustment design, preventing the steel pipe from shifting after clamping. This is the most problematic aspect of double-head tube bending machines—if the dies on the two heads are not concentric, the resulting tubes will be asymmetrical. Zhuoran has reinforced this detail.
2. Three Working Modes
Full Cycle Mode—Place the pipe → Start → Automatically bend both ends → Machine stops → Remove finished product Semi-Cycle Mode—After bending one tube, do not stop; directly change to the second tube. Manual Mode—Used for debugging and die changing, step-by-step operation.
3. High Angle Accuracy and High Safety Standards
Each bending head is equipped with an angle detector, coupled with a safety interlock, ensuring that the two heads will not collide or interfere.
4. Hydraulic System
Hydraulic clamping + hydraulic bending, balanced driving force. The hydraulic circuits of the two bending heads are independently controlled, preventing one side's resistance from affecting the other's bending angle.
5. Can bend one or two pipes in combination
When your order only requires bending on one side (the other side is a straight pipe), or when you need to bend pipes of different materials, you can select the single-pipe mode on the control panel to use only one pipe bender.
Recommendations before purchasing a double-head pipe bending machine:
2. Assess your production volume and labor costs.
Secondly, the main value of a double-head pipe bending machine lies in completing bending on both sides in one operation. Using a single-head pipe bending machine, the daily output of symmetrical chair frame parts is typically around 200-300 pieces; while two single-head machines can increase this to 400-500 pieces, they require two operators.
In contrast, a double-head pipe bending machine, operated by one worker, can achieve a daily output of approximately 500-800 pieces. Therefore, when your order volume is large, a dual-head machine can not only increase production capacity but also reduce manual labor and matching errors between the left and right pipe fittings.
1.Determine if your pipe fittings are suitable for double-head bending.
Firstly, double-head pipe bending machines are mainly used for pipe fittings with mirrored or symmetrical ends, such as chair armrests, side frames of fitness equipment, motorcycle pedals, and display rack legs. The equipment allows both bending heads to move synchronously, ensuring consistent left and right angles and dimensions.
However, if your product structure is asymmetrical, the bending direction is complex, or a single piece contains more than six bends, a double-head machine may not be suitable. In this case, it is recommended that you choose a CNC fully automatic pipe bending machine to complete multiple three-dimensional bends.
3.Consider mold changing and center distance adjustment.
In addition, when changing products, you not only need to change the mold but also readjust the distance between the two bend heads. The SW38NC and SW50NC use manual adjustment. For the first changeover, it is recommended to allow 10-15 minutes for fine calibration and record the position data of the corresponding product for quick reset next time.
If you have many product specifications and need to change molds frequently every day, it is recommended to choose the SW38CNC. You only need to input the center distance parameter, and the servo system can automatically complete the positioning, thereby reducing downtime and minimizing dimensional errors caused by manual adjustment.
Get Your Custom Machine Quotation Now
Want to confirm which symmetrical pipe fittings are right for you? Send us a pair of pipes, and we’ll test the bending for free. Bend both pipes simultaneously, and you can personally inspect the symmetry before placing your order.