In CNC woodworking and door manufacturing, the machining of door jambs, frames and mouldings requires absolute stability to maintain millimetric tolerances and avoid rework. Traditional clamping systems often slow down production due to setup adjustments and machine modifications.
The vacuum-activated door jamb clamp from Vacuum CNC eliminates unnecessary adjustments and improves fixing precision without modifying the CNC machine, integrating directly into the existing vacuum system to optimize precision, speed and operational continuity.

What is the Vacuum CNC Door Jamb Clamp?
The Vacuum CNC door jamb clamp is a vacuum-activated fixing system designed to integrate seamlessly into CNC machining centres for doors, windows and linear components. It uses the machine’s own vacuum system to secure parts with maximum stability.
It is a double clamp, designed to work simultaneously on operations such as:
- Hinge pocket machining.
- Latch and lock machining.
- Routing and milling on door jambs.
- Precision machining of moldings and linear parts.
The system is designed to clamp workpieces with widths ranging from 40 to 190 mm, covering a wide range of applications in industrial carpentry and frame manufacturing.
Equipment dimensions*
- Size: 700 x 150 x 115 mm.
- Activation system: vacuum operated.
- Machine integration: direct, no external installation required.
* Dimension D can be modified using height elevators

How does the vacuum fixing system work?
The clamp is activated using the CNC machine’s own vacuum system. No additional connections or structural modifications are required.
Operating principle
- The clamp is positioned on two Vacuum CNC bases.
- It connects to the existing vacuum circuit.
- The vacuum generates the clamping force.
- The workpiece remains stable throughout the machining process.
This system eliminates the need for traditional clamps that require complex mechanical adjustments or modifications to the production line.
What problem does the Vacuum CNC Door Jamb Clamp solve compared to traditional clamps?
In conventional systems, the clamp acts from underneath the workpiece. This typically requires:
- Adjusting machine parameters according to workpiece thickness
- Reconfiguring the setup
- Increasing preparation time
The core issue is not simply thickness variation, but the reference position. When the machining reference is taken from the bottom of the workpiece, any change in thickness directly affects routing depth. In fact, small variations result in hinge pockets or lock positions being machined deeper or shallower than intended.
Even when the hardware and the program remain constant, the material can suffer variations. This forces operators to continuously modify parameters or re-adjust programs. And when the variation is not detected in time, the result is not only lost minutes, but scrapped material that cannot be recovered.
The Vacuum CNC door jamb clamp applies clamping pressure from the top of the workpiece, eliminating these limitations.
Operational advantages over conventional systems
- No machine modification required.
- No adjustments for thickness variations.
- Reduced setup times.
- Constant stability during machining.
- Easy integration into existing production lines.
In many dedicated mechanical clamping systems for jamb machining, installation can require between one and one and a half hours. And removal requires a similar amount of time.
The Vacuum CNC Door Jamb Clamp can be installed in approximately three minutes and removed in the same time. The result is a faster, more stable and more efficient fixing solution without altering the CNC setup.
What technical features define the Vacuum CNC Door Jamb Clamp?
The clamp is designed to deliver high performance in demanding industrial environments, combining installation simplicity with CNC precision.
Main features
- Vacuum activation.
- Clamping range from 40 to 190 mm.
- Mounted on two Vacuum CNC bases.
- Compatible with bar systems and flat tables.
- Installation without machine modifications.
- Double clamp design for simultaneous operations.
- Fast positioning and removal.
What advantages does it bring to the production process?
The door jamb clamp is designed to improve machining line efficiency without adding technical complexity.
Operational benefits
- Immediate installation on any CNC machine.
- Reduced setup time.
- High stability during machining.
- Consistent precision in repetitive operations.
- Adaptable to different CNC configurations.
Production benefits
- Shorter setup times.
- Fewer errors caused by incorrect adjustments.
- Continuous workflow.
- Simple integration into existing processes.

What door jamb clamp models are available?
Vacuum CNC offers two clamp configurations designed to adapt to different machining needs and precision requirements.
Option A: Basic stop
This model offers greater versatility when working on the side of the clamp.
Main applications:
- Lateral machining operations.
- General door jamb processing.
- Processes that require flexible positioning.
Advantages:
- Greater lateral freedom.
- Simple configuration.
- Adaptable to multiple operations.
Option B: H-stop
Specifically designed for hinge operations, this model provides higher precision when machining above the clamp.
Main applications:
- Hinge pocket machining.
- High-precision operations.
- Machining centered on the upper axis of the clamp.
Advantages:
- Accurate hinge positioning.
- Greater stability in critical operations.
- Improved tolerance control.
On which machines can Vacuum CNC Door Jamb Clamp be installed?
The door jamb clamp is designed to integrate into a wide range of CNC machines without requiring modifications.
Compatibility
- Bar systems.
- Flat tables.
- Door and window machining equipment.
- Vacuum-based production lines.
Its modular design allows it to be incorporated as an auxiliary element into existing processes without altering machine structure because the clamp is built on the Vacuum CNC modular base system, so it is not tied to a single machine configuration.
If a workshop operates multiple CNC machines, the same clamping unit can be used on different machines simply by changing the interface bases. And if the CNC machine is replaced in the future, only the base adaptation changes and the clamp itself remains operational. This protects the investment and aligns with long-term production planning.
What are its industrial applications?
The door jamb clamp is intended for processes where precision and stability are critical.
Typical operations
- Door jamb machining.
- Frame and moulding routing.
- Slot and opening machining.
- Hinge and latch operations.
Why choose a vacuum fixing system?
In CNC woodworking and door frame machining, vacuum fixing systems provide a clear advantage over traditional mechanical clamping by ensuring repeatable positioning and consistent pressure throughout the machining process.
Vacuum fixing ensures uniform clamping force without deforming the workpiece or introducing unnecessary mechanical stress.
Technical advantages of vacuum fixing
- Even pressure distribution.
- Reduced vibration
- Higher machining accuracy.
- Lower machine wear.
In applications where tolerances are critical, this type of fixing is particularly effective.

How is the clamp installed and removed?
One of the main benefits of the Vacuum CNC door jamb clamp is the speed of installation and removal.
Installation process
- Position the clamp on the Vacuum CNC bases.
- Connect it to the machine’s vacuum system.
- Activate the vacuum.
- Start machining.
There is no need to: modify the machine, adjust parameters for thickness or to install external systems.
Removal is equally fast, allowing quick configuration changes in the production line.
First use considerations for the Vacuum CNC Door Jamb Clamp
The clamp does not require structural installation. However, during first use, reference points must be correctly established. Z-axis depth and positioning in X and Y should be verified before full production begins.
Like any precision workholding system, performance depends on correct referencing during initial setup.
Once references are defined, configuration changes become immediate and repeatable.

Vacuum CNC as a manufacturer of CNC vacuum clamping systems
Vacuum CNC specializes in the design and manufacture of vacuum clamping systems for CNC woodworking and door manufacturing machines. Its solutions are developed to integrate into demanding production environments, improving precision and efficiency without altering machine structures.
Its catalog includes:
- Vacuum fixing systems.
- Mechanical and vacuum clamps.
- Stabilization and leveling solutions.
- Components for specialized machinery.
When setup friction disappears, jamb machining becomes predictable. Predictability changes production capacity. A stable and fast configuration allows workshops to integrate jamb machining into their workflow without disrupting other operations. In many cases, what was previously a time-consuming task becomes a controlled and repeatable process.
Stability is not only about precision. Stability is about operational confidence.
Optimize frame fixing without modifying your machine
The Vacuum CNC door jamb clamp provides a direct solution to improve stability and precision when machining frames, moldings and profiles. Its vacuum activation, tool-free installation and double clamping system help optimize time and results without altering the production line. Discover the Vacuum CNC Door Jamb Clamp and other vacuum clamping solutions for CNC woodworking and door manufacturing at Vacuum CNC.
+34 91 059 94 83 – +34 682 77 19 34 
