New Steelwrist Attachment Quick coupler 18-33 tonnes
Symmetrical quick coupler for excavators in the 18-33 ton range.
Steelwrist quick couplers are designed around three leading principles: Robust, Compact, and Safe. The Quick Coupler is a wedge type coupler following the Symmetrical Standard and is fully compliant with ISO13031 (Earth-moving machinery – Quick Couplers – Safety).
- Robust - Thanks to the combination of casted components and truss structure design we have achieved a relatively low weight yet a very robust design. With the casted front hubs, which allows for oversized pin contact surfaces, we distribute the digging forces into the coupler structure like no other brand on the market. The Steelwrist coupler is also the only coupler on the market that uses the shafts as part of the truss structure in order to take up side forces incurred when working with a tiltrotator.
- Compact - With only 160mm of building height on the S70 quick coupler the difference between a direct fit tiltrotator and a sandwich construction tiltrotator is minimal. We recommend that for wheeled excavators from 14 tons and upward to use a coupler together with your tiltrotator.
Safe - The Symmetrical Coupler Standard is by itself a very safe system compared to some other of the European type couplers. By using a Symmetrical Coupler you will fulfill basic requirements like:
- It is only possible to use bucket following the same standard. (With an S70 coupler you can only pick up a work tool that has a S70 adaptor. It is not possible to pick up a bucket that is not designed to fit your coupler)
- Wedge type locking, whereby the angle of the locking wedge is in cooperation with friction which counteracts the tendency to disengage.
- No digging forces into the locking cylinder even under reverse grading (grade away from driver)
- On top of these features the Steelwrist Quick Couplers have continuous locking force, check valve and internal springs for safety back up reasons.
Steelwrist symmetrical quick couplers are unique. No other manufacturer cast the entire quick coupler in steel and includes front pin locking as standard for maximum safety. We also include Expander pins so that we create a truss structure taking up the lateral forces that comes when you start using a tiltrotator.
The advantage of casting in steel is that materials can be optimized where needed (for example, contact surfaces to pins in order to minimize the preassure per square mm) and eliminate material where it is not needed. The result is an unrivaled relation between strength and weight.
With Front Pin Lock you are safe during tool changes regardless of control system, the size and age of your excavator. A simple mechanical solution that protects against the most common risk, i e that you by misstake connect the rear pin in the wrong way without noticing it. Read more about the Front Pin Lock here.
Unlike traditional solutions that only indicates that the lock is open (or modern sensor-based solutions that indicates when you are not connected correctly), Steelwrist Front Pin Lock solves both problems. We indicate red when the lock is open and green when the bucket is in a secured position. In addition, we ensure that you do not drop a bucket even if you made a mistake in the coupling process. As long as you have the front pin in the front jaw (the one that you see from the cabin) then you are safe even if you locked above the rear pin. In a way, one can say that our solution is both a “warning” and an “airbag” when our competitors a “warning light”.