12×160 mm Hydraulic Busbar Processing Machine

350 kN Cutting, Punching and Bending for Copper & Aluminum Busbars

The TRANFOVIA 303 Series Hydraulic Busbar Processing Machine is designed for transformer and electrical equipment manufacturers processing copper or aluminum busbars up to 12 × 160 mm.

With a nominal force of 350 kN and a punching range of Φ4.3–25 mm, the 303 Series integrates the principal busbar fabrication operations of cutting, punching and bending into one machine platform.

Different configurations are available according to production requirements, from standard sequential processing to simultaneous three-station operation, rotary punching and digital bending angle control.

Is the 12×160 mm Busbar Machine Right for Your Production?

The first step in selecting a busbar processing machine is to confirm the largest busbar used in your production.

The 303 Series is suitable when:

• Maximum busbar thickness is within 12 mm
• Maximum busbar width is within 160 mm
• Required punching diameter is within Φ4.3–25 mm
• Cutting, punching and bending are all required
• Copper or aluminum busbars are processed for transformer or electrical equipment production

If your regular busbars already exceed 12 × 160 mm, selecting a higher 303 configuration will not increase the basic processing capacity.

In that case, the 503 Series (16 × 200 mm) or 803 Series (16 × 260 mm) should be evaluated instead.

Choose the 303 Configuration by Production Requirement

All main 303 models share the same 350 kN nominal force and 12 × 160 mm maximum busbar size.

The correct configuration therefore depends mainly on:

• Whether the three stations need to work simultaneously
• How frequently punching specifications change
• Whether rotary punching is required
• Whether digital bending angle control is required

303C-1 or 303C-3: Do You Need Simultaneous Workstations?

303C-1 — Standard Sequential Processing

The 303C-1 is suitable when the workshop needs standard busbar cutting, punching and bending but does not require the three stations to operate at the same time.

• Suitable for moderate production volume.
• Appropriate when cutting, punching and bending are organized sequentially.
• No digital bending angle control is required.
• Recommended when the priority is a straightforward multifunction busbar machine within the 12 × 160 mm capacity class.

303C-3 — Simultaneous Three-Station Processing

The 303C-3 keeps the same 12 × 160 mm processing capacity but allows the cutting, punching and bending stations to work simultaneously.

• Suitable when different operators need to work at different stations at the same time.
• Helps organize overlapping cutting, punching and bending workloads.
• Recommended when production volume is higher than a purely sequential workflow can comfortably support.
• The upgrade from C-1 to C-3 is driven by production rhythm rather than larger busbar dimensions.

When Is the 303E Series a Better Choice?

The 303E Series is intended for transformer manufacturers that need more flexible punching and a more production-oriented three-station arrangement. It combines cutting, rotary punching and bending stations with a double-worktable configuration while keeping the same 12 × 160 mm busbar capacity.

• Frequent changes between different punching sizes or hole types.
• Multiple busbar designs are processed during the same production period.
• Three processing stations need to operate simultaneously.
• The workshop benefits from a rotary punching arrangement and double worktable.

303E-3 vs. 303E-3-S: Do You Need Digital Bending Control?

Both the 303E-3 and 303E-3-S provide:

• 350 kN nominal force
• 12 × 160 mm maximum busbar size
• Φ4.3–25 mm punching range
• Rotary punching
• Double worktables
• Simultaneous three-station operation

The main difference is the bending control configuration.

303E-3 — Standard Bending Configuration

Choose the 303E-3 when:

• Rotary punching is required
• Three stations need to operate simultaneously
• The E-series worktable arrangement is required
• Digital bending angle control is not necessary

303E-3-S — Digital Bending Angle Control

The 303E-3-S adds PLC-based bending angle control with displacement sensing.

This configuration is more suitable when:

• The same bending angles are produced repeatedly
• Busbar parts are manufactured in repeat batches
• Operators need preset bending parameters
• Stored settings are useful for repeat production
• Error compensation is required
• The factory wants to reduce dependence on manual angle judgement

The digital-control version is therefore selected for repeatability and production-control requirements, not because it can process larger busbars.

What About the 303E-3-SK?

The listed 303E-3-SK configuration also has:

• 350 kN nominal force
• 12 × 160 mm maximum busbar size
• Φ4.3–25 mm punching range
• Digital bending angle control
• Simultaneous three-station operation

The available technical data does not identify a clear processing-capacity difference between the 303E-3-S and 303E-3-SK.

For projects considering the SK configuration, the final equipment specification and tooling arrangement should be confirmed according to the required busbar drawings and production process.

Technical Specifications

303C Series

303E Series

Standard Tooling and Accessories

The 303 Series can be supplied with tooling for common transformer busbar processing. Tooling selection should be based on the finished busbar drawings and required hole or bending geometry.

• Cutting unit: one pair of cutting blades.
• Punching unit: punching dies selected according to required hole dimensions.
• Bending unit: U-bending tooling, flat bending tooling and embossing tooling as specified.
• Additional accessories: maintenance tools and foot switches according to the selected configuration.

Three-Station Processing for Transformer Busbar Production

For three-station configurations, the machine separates cutting, punching and bending into dedicated working areas. This is useful in transformer factories where different busbar parts are processed during the same production shift.

Applications in Transformer Manufacturing

The 303 Series is suitable for copper and aluminum busbar fabrication in transformer factories where the required busbar dimensions remain within 12 × 160 mm.

Typical processing includes cutting, punching and forming busbars used between transformer terminals, leads and other electrical connection points before final assembly.

The machine can also be used in other electrical-equipment manufacturing applications requiring comparable copper or aluminum busbar processing.

Information Required for Model Selection

To select the correct 303 configuration and tooling, provide the following production information:

• Busbar material: copper or aluminum.
• Maximum busbar width and thickness.
• Required hole diameters and hole shapes.
• Required bending types and angles.
• Whether cutting, punching and bending need to operate simultaneously.
• Whether rotary punching is required.
• Whether digital bending angle control is required.
• Typical finished busbar drawings.
• Production volume or expected daily workload.
• Factory power supply.

FAQ

1. What is the maximum copper or aluminum busbar size the 303 Series can process?

The listed maximum processing size is 12 × 160 mm. If your regular production exceeds this range, the 503 or 803 Series should be evaluated.

2. What is the punching range of the 303 Series?

The listed punching range is Φ4.3–25 mm, subject to the selected punching dies and the required hole geometry.

3. What is the difference between 303C-1 and 303C-3?

Both use the same 350 kN capacity and 12 × 160 mm processing range. The main difference is production organization: the 303C-3 allows the three stations to work simultaneously, while the 303C-1 does not.

4. When should I choose the 303E Series instead of the 303C Series?

The 303E Series is more suitable when rotary punching, a double-worktable arrangement and simultaneous three-station production are important to the workshop.

5. What is the difference between 303E-3 and 303E-3-S?

Both have the same basic processing capacity. The 303E-3-S adds digital bending angle control, while the 303E-3 uses the standard bending configuration.

6. Can different punching dies be supplied?

Yes. Punching dies should be selected according to the required hole sizes and profiles shown on the customer’s busbar drawings.

7. Can the cutting, punching and bending stations work at the same time?

Yes on the listed three-station configurations such as 303C-3 and the 303E three-station versions. The 303C-1 is not listed for simultaneous three-station operation.

8. Do I need digital bending angle control for transformer busbar production?

Not in every case. It is most useful when repeated bending angles are produced across multiple batches and preset or recalled bending parameters are valuable to the production team.