Cat has launched a new tilt coupler for its 5 and 8 tonne mini excavators in the shape of its new Dual-Lock Tilt (DLT) pin grabber hydraulic coupler that allows the use of attachments through a 180° arc. According to Cat, the design provides optimum flexibility and efficiency in applications including demolition and accommodates compatible pin-on attachments and permits the use of buckets in a front shovel configuration.
The DLT coupler’s design allows tools to be changed from the cab, and a visible locking mechanism assures operators that tools are securely attached. Its primary locking system uses a wedge plate that is positioned via a hydraulic cylinder with an integrated check valve and a secondary lock is spring-applied and hydraulically released by means of a separate hydraulic circuit.
It features an enclosed design with no external cylinder rods or moving parts, resulting in optimum reliability, longer component life and low cost of ownership, says Cat. All internal components subject to wear are heat-treated for maximum service life, thus extending the life of bearings, seal grooves and gear surfaces. A newly designed rotary actuator provides up to 35% more holding torque, reduces overall weight by 15%, and simplifies hydraulic line routing. In addition, the helically cut and hardened gears used in the actuator ensure positive action and long-term durability.
Coupler weights are 112 kg (247 lb) for 5 tonne class excavators plus the 903C Compact Wheel Loader and 180 kg (398 lb) for 8-ton-class excavators. The DLT coupler is available for 305C/D/E and E2 models, 305.5D/E and E2 models, and 308E and E2 models.