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Steelwrist Launches SQ40 Quick Coupler for Compact Excavators
This makes changing powered work tools easier and safer, as it can be done without leaving the cab. The SQ40 size brings the SQ auto connection technology to excavators between 2 and 7 t. In 2017 Steelwrist introduced the SQ auto connection system for quick couplers and tiltrotators. With the SQ technology it is possible to connect both hydraulics and electrical signals in one movement. With the introduction of the new SQ40 size Steelwrist’s product range includes 8 different SQ quick coupler models, for excavators from 2 to 70 t. Significant development efforts have gone into the design of the new SQ40 automatic coupler and one very critical criteria was to ensure the flow required to power demanding hydraulic work tools. The SQ40 coupler is optimized to achieve a flow of 70 l/min thanks to a new and innovative coupling that provides 40% more flow area compared to a standard 3/8” coupling. With the SQ40 automatic machine coupler Steelwrist also introduces the new H6 electrical connector that builds on the years of experience with the Open-S V14 electrical connector. The H6 is a 6-pin electrical connector which is fully integrated to the SQ40 locking wedge and has a molded design to ensure that it is environmentally sealed. Large contact surfaces and strong spring loaded pins ensure reliable electrical transmission and high current capabilities. The contacts core is hardened Phosphor Bronze, which results in effective corrosion-resistant properties when exposed to harsh conditions, as well as a hardness similar to steel to ensure a long service life. The SQ40 is fully compatible with existing work tools without requiring costly modifications. Its modular construction enables fast upgrades from S to SQ, with simplified hose routing and easy installation of male couplings integrated into the rear tool shaft. This also means that hose routing is very flexible, and can be adapted to a wide range of hydraulic work tools. In the process of developing the SQ automatic couplers solution Steelwrist realized that the world does not need another proprietary solution that locks the contractor into only using components from one manufacturer. Therefore the initiative was taken to create the Open-S (OS®) symmetrical standard, with the goal to give machine operators and contractors the freedom to combine quick couplers and work tools from different manufacturers. Initiated in 2020, the Open-S Alliance has grown significantly the past 12 months, with eight new companies joining the organization that now has more than 20 members globally.
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