Quick release for aluminum profiles

Practical quick release especially for aluminum profiles

RUWI quick-release clamps - The efficient eccentric technology for aluminum profiles

Faster clamping, without a wrench: Our RUWI quick-release clamps use the eccentric lever principle to securely fix workpieces, angles or stops in T-slot profiles (slot 6, 8, 10) without tools. Where others turn with wing screws, with us you simply turn the lever - and everything is already firmly in place.

Introduction & Overview

Our quick-release clamps are based on the principle of "clamping instead of screwing": an eccentric lever presses a T-slot nut into your aluminum profile groove - with just a short lever stroke. This allows you to secure components, fixtures, stop bars or brackets in seconds and release them just as quickly.

The highlight: The eccentric clamping system eliminates the need for any tools. Instead of endless screwing, you simply turn the adjusting nut once to match the workpiece thickness, and then a single click is all it takes – and you achieve clamping forces of 2.5 kN to 4 kN. This saves you a tremendous amount of time in the workshop, especially when you frequently change workpieces or stops.

Technical design & functionality

RUWI toggle clamps are eccentric clamping levers that fit securely into the profile groove. Their core is a cylindrical base body (e.g., Ø20 mm) and a spring-loaded bolt. When the lever is moved, this bolt pulls the T-slot nut upwards in the groove – a short lever stroke multiplies your manual force by 20 to 25 times.

  • Eccentric lever: It clamps the sliding block in the groove with minimal effort.
  • Adjusting nut: Fine adjustment of the clamping stroke so that you can adapt the clamping exactly to the workpiece height or material thickness.
  • Spring principle: Installation of a return spring so that the tensioner automatically springs back into the open position when released.
  • High-quality materials: steel, galvanized sliding blocks, aluminium or zinc die-cast levers - robust and durable (Made in Germany).

This allows you to easily achieve 2.5 kN to 4 kN of clamping force from approximately 100 N of manual force. This is more than enough to securely hold stops or workpieces – for example, when drilling, milling, or assembling. The lever engages noticeably and positively, thus reducing accidental release, even in vibrations in the workshop.

Models & variants

Our quick-release skewers are available in different versions so that you have the perfect solution for every profile type and every clamping situation:

  • Ø15 mm for slot 6: Very compact design (total height ~34 mm), clamping stroke ~6 mm, clamping force ~1.5 kN. Ideal for small systems (e.g., 30×30 profiles), model making, or light tasks.
  • Ø20 mm for 8/10 slot: The all-rounder. Total height approx. 44–47 mm depending on the model, clamping stroke 8–11 mm, clamping force ~2.5 kN. Fits common 40×40 or 45×45 systems.
  • Ø30 mm for slot 8/10: Larger base body for higher clamping forces (up to 4 kN) and greater clamping height (14–26 mm). Perfect for thicker workpieces or frame structures.

The sliding blocks are cut so that they fit into almost all aluminum profiles from different manufacturers (Item, Bosch Rexroth, etc.) - the main thing is that the groove width is correct. If you are unsure, we will be happy to advise you so that you can find the right model for your profile cross-section and workpiece dimensions.

Ergonomics & economy

Ergonomic advantages:

  • One-handed operation: just flip the lever, the other hand holds the workpiece.
  • No wrench: you no longer have to search for tools, everything works without tools.
  • Haptic feedback: You can tell immediately whether the clamp is perfectly seated.
  • Quick changeover: Each clamping process takes only seconds, which reduces fatigue during frequent changeovers.

Economic benefit:

  • Significant time savings: Less set-up time and faster adjustment increase your efficiency.
  • Versatile reuse: Once purchased, you can use the tensioners in other projects as required.
  • Long service life: "Made in Germany" with robust materials means reliable function for many years. Spare parts are available.

Although RUWI quick-release clamps are more expensive than simple T-slot nuts with wing screws, the set-up time savings quickly pay for themselves.

Accessories & compatible RUWI products

Our quick-release clamps harmonize perfectly with other RUWI solutions. You can further increase the utility value of your profile technology:

  • Clamping brackets with quick release: Angular steel brackets with pre-assembled clamps. This allows you to build right-angled frames or stops in no time at all.
  • Adapter plates with two clamping handles: To couple two profiles over a large area or to fix a profile to a mounting plate without a screw connection.
  • RUWI drilling tables & routing fences: Many RUWI table systems work with profile grooves so that you can fasten workpieces directly with our quick-release clamps.
  • Tensioner with external thread: If you do not use a profile but threaded holes (e.g. M20), we can offer you corresponding bolts to use the same eccentric lever mechanism.

Practical areas of application

  • Woodworking & workshop: Quick fixing of workpieces on drilling or router tables (grooves instead of hole patterns), flexible stops, gluing frames in joineries.
  • Metal & mechanical engineering: Fixture construction, sensor holders, stop rails in profile frames, rapid retooling for assembly or prototypes.
  • Furniture construction & interior fittings: Temporary carcase constructions, pressings or assembly devices, simple gluing in the profile frame.
  • Exhibition stand construction & prototyping: Quick assembly and disassembly of aluminum profile structures, freely positionable angles without tools.
  • CNC & Automation: Hold-down devices on CNC tables, flexible clamping points in automated or semi-automated systems.

Wherever you have to re-clamp a lot in a profile groove, you benefit in particular: no wrench, no tedious turning - just click the lever and off you go.

Advantages over conventional methods

  • Short set-up times: Loosening and moving in seconds instead of loosening/tightening wing screws by turning them.
  • Tool-free operation: no need to search for Allen keys, open-end wrenches etc.
  • Modularity: Different profile manufacturers, different groove widths - we have a suitable solution for everyone.
  • High force level: Up to 4 kN, positive clamping through eccentric mechanism.
  • Increased work safety: Workpieces are readily and correctly clamped because it is so easy.

Buying advice & tips

To help you get exactly the right tensioner, we have put together a few guiding questions:

  • Which profile groove width? Groove 6, 8 or 10 - choose the corresponding Ø15, Ø20 or Ø30 tensioner.
  • Clamping height or workpiece thickness: Do you want to clamp flat or higher parts? Perhaps you need a "long" version with more adjustment travel.
  • Force requirement: For light applications, ~2.5 kN is sufficient; for heavier loads, use the larger models (up to 4 kN).
  • Do you need accessories? Clamping brackets, adapter plates, clamps with external thread - our sets make it easier for you to get started.

For industrial operations, series production or frequently changing workpiece dimensions, the clamps usually pay for themselves very quickly. In the hobby or prototype sector, they are a convenience upgrade that speeds up your workflow enormously. We will be happy to help you if you are unsure which size and design is best for you.

Conclusion

RUWI quick-release clamps are a real game changer when it comes to fastening in aluminum profile grooves. You can achieve high clamping forces with minimal effort, without tools and with enormous time savings. This increases efficiency, safety and flexibility in equal measure - regardless of whether you are working in trade, assembly, trade fair construction or industrial fixture construction.

Thanks to "Made in Germany" quality, a wide range of accessories and many years of spare parts supply, you are always on the safe side. Our quick-release skewers fit many profile manufacturer systems and can be used reliably for years. We look forward to you trying them out - you won't want to do without them again!