The new Cat Pin Grabber Coupler is available for both factory and retrofit installations and can be used for all Cat D, E and F Series excavators, models 311 through 349. The coupler works with Cat buckets and most competitive buckets.
Specialty designs include a narrow frame version to accommodate certain competitive buckets and a trencher version that fits within the width of the smallest trenching buckets. Most F Series excavators have auxiliary hydraulic systems ready to run the coupler right from the factory.
Weight reduction is as much as 10 percent for some models. In addition, the coupler incorporates a short-profile design that reduces tip radius (distance from the stick mounting pin to the bucket cutting edge) for added digging power, greater fill ratios and fuel conservation – all with enhanced machine stability. A lifting eye is centred on the back of the coupler (matching the stick centre-line), to assist operators in keeping loads aligned and maintaining precise control when placing items. The redesigned shape of the eye, similar as those used on buckets, accepts larger shackle sizes and enhances stability of the shackle.
A debris shield completely covers the top of the coupler, which helps ensure proper operation and reduces maintenance. A central greasing block on the side of the coupler services all but two grease points.
The new coupler features a wedge-lock system for primary pin retention and a positive secondary latch. Constant hydraulic pressure is maintained on the wedge, and the coupler frame – rather than the activating cylinder – absorbs most of the force to help ensure long-term durability. The coupler maintains tool position in the event of hydraulic pressure loss, and the operator can positively verify from the cab that the coupler is locked.
