Prima Power EB Bending Panel Bender
Key Specifications
Bending Force
Maximum Sheet Length
Maximum Sheet Width
Material Thickness Range
Bending Speed
Blank Holder
Overview
The Prima Power EB Bending panel bender is an automated servo-electric panel bending system designed for high-volume sheet metal production, particularly in the HVAC, elevator, appliance, and electrical enclosure industries. Unlike conventional press brakes where the operator manually repositions the workpiece between bends, the EB Bending uses a programmable blank holder and bending blade to automatically perform up and down bends in sequence, producing fully formed panels with multiple flanges in a single automatic cycle without operator intervention during bending.
The system's servo-electric drive controls all axes — blank holder clamping force, bending blade position, and the manipulator that repositions the workpiece between bends — with a level of speed and repeatability that hydraulic panel benders cannot match. Cycle times for complex panels with six or more bends can be completed in under 30 seconds, delivering throughput rates that justify the capital investment in high-volume production environments running the same or similar parts repeatedly.
Prima Power integrates the EB Bending into its Flexible Manufacturing System (FMS) platform, enabling seamless connection with Prima Power laser cutting, punching, and sorting systems. Blanks cut upstream flow automatically to the panel bender's loading station, are processed, and exit to a downstream stacking or welding station — creating a fully automated sheet metal production line with minimal human intervention. The Prima Power PSBB (Punching, Shearing, Buffering, Bending) system is the most integrated expression of this philosophy.
Programming is done offline using Prima Power's CAD/CAM software, which generates bend sequences automatically from imported 3D part models and simulates the full bending cycle for collision detection before the program reaches the machine. This eliminates the need for operator programming skill at the machine level, allowing production to be scheduled and set up from an engineering workstation. The EB Bending is a statement machine for companies committed to automation-led sheet metal production.
Full Specifications
| Parameter | Value |
|---|---|
| Bending Force | Servo-electric, configuration dependent |
| Maximum Sheet Length | Up to 3,000 mm (model dependent) |
| Maximum Sheet Width | Up to 1,500 mm (model dependent) |
| Material Thickness Range | 0.5–3.0 mm (mild steel); 0.5–2.5 mm (stainless) |
| Bending Speed | Up to 100 bends/min (simple profiles) |
| Blank Holder | Programmable clamping force, servo-controlled |
| Drive System | Full servo-electric (all axes) |
| Bend Types | Up and down bends, hemming, Z-bends in single cycle |
| CNC Control | Prima Power CAD/CAM integrated control |
| Automation Integration | FMS/PSBB compatible, upstream/downstream conveyor I/O |
| Programming | Offline from 3D CAD model, automatic bend sequence generation |
Strengths & Limitations
Strengths
- Fully automated bending cycle with no operator repositioning between bends delivers throughput rates impossible on conventional press brakes
- Servo-electric drive on all axes provides fast, repeatable bend cycles with energy efficiency superior to hydraulic panel benders
- Seamless integration with Prima Power FMS and PSBB systems creates fully automated sheet metal production lines from blank to finished panel
- Offline CAD/CAM programming eliminates machine-level operator programming skill and enables pre-validated programs to run without trial bends
- Up and down bending capability in a single cycle eliminates the need to flip workpieces, reducing handling and cycle time
Limitations
- Very high capital cost is only justifiable in high-volume production environments running repeating parts; unsuitable for job shops with high variety and low volume
- Material thickness range (up to 3 mm) limits the machine to sheet metal; heavy-gauge structural bending requires a conventional press brake
- Tooling and process setup for new part families is complex and time-consuming despite offline software, requiring experienced process engineers
Best For
Frequently Asked Questions
01
A press brake bends sheet metal by pressing a punch down through a die, requiring the operator to reposition the workpiece manually between each bend. A panel bender uses a fixed blank holder to clamp the sheet and a moving bending blade to fold flanges up and down automatically in sequence, without repositioning. Panel benders are faster and more automated but limited to thinner gauges and specific part geometries.
02
Yes. The EB Bending processes mild steel, stainless steel, galvanised steel, and aluminium within its material thickness range. The blank holder clamping force and bending blade radius are programmable to suit different material properties, including the higher springback of aluminium and the surface sensitivity of polished stainless.
03
Prima Power's FMS software coordinates material flow between laser cutting, sorting, and panel bending stations. Cut blanks are automatically sorted by part program, buffered in a tower, and fed to the EB Bending in the correct sequence. The panel bender automatically selects the correct NC program from its database when each blank arrives, enabling fully unattended overnight or weekend production.
04
Minimum and maximum flange dimensions depend on the specific EB Bending model configuration and tooling. Typically, minimum flange lengths start from approximately 8–10 mm, and maximum flange heights are limited by the blank holder opening. Prima Power's applications engineering team can confirm the specific limits for a given part family during machine specification.
05
Yes. Hemming (folding the edge back onto itself) is a standard capability of the EB Bending system. This is particularly relevant for appliance and automotive panel applications where hemmed edges provide structural stiffness, improved appearance, and safe handling of sharp sheet metal edges.
Videos
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Community Discussions
Pricing and buying discussion — Sheet metal bending... : r/Machinists - RedditCnc pipe/tube bender : r/Machinists - RedditFiber laser for sheet metal fabrication : r/Machinists - RedditFixture plate that I designed, programmed, and machined ...Busting bits cutting sheet metal on the CNC mill : r/Mac
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Owner experience and review — Cnc pipe/tube bender : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.
