Caterpillar Performance Handbook, January 2017, SEBD0351-47

Dual Lock™ Pin Grabber Couplers

Hydraulic Excavators

MINI HYDRAULIC EXCAVATORS Dual Lock Pin Grabber Couplers

Productivity As with any quick coupler, the Dual Lock quickly changes between attachments, allowing one machine to be used for multiple tasks on the job site. The ability to see when the coupler is open or closed makes it intui- tive to use, saving time when changing tools. Dual Lock Couplers can engage and disengage any compatible Cat bucket or work tool attachment equipped with pins. The pin grabber design allows for buckets to be turned around in “front shovel” mode on both the Dual Lock and the Dual Lock Tilt Coupler. The ease of operation and quickness of tool change- over maximizes productivity on the job site. The coupler is easy to operate, regardless of user skill level, and it’s easier to train new operators to use. The ability to see when the coupler is open and closed saves time when- ever a tool is changed. The elimination of the locking bar allows for operation regardless of boom, stick and machine position. Dual Lock Pin Grabber Couplers meet Australian Standard AS 4772 and European EN-474-1.

Dual Lock Pin Grabber Couplers allow work tools to be changed quickly — improving overall production and increasing machine versatility. A coupler is pinned on in place of the bucket with standard pins. The Dual Lock Coupler is available in a standard pin grabber design for use on machines sized from 301.4C- 308E2 CR SB. There are two types of Dual Lock Pin Grabber Couplers – Mechanical and Hydraulic (fully operable from the cab). The Dual Lock Tilt Coupler allows for 180° of rota- tion while providing a reliable high torque actuator with few moving parts. The 180° rotation reduces the need for additional equipment on the job site, while increasing productivity and profitability. Visible Secondary Lock Cat Dual Lock Pin Grabber Couplers maintain a tight fit throughout the life of the coupler with an innovative wedge design. Primary and secondary locking systems are totally independent. The primary locking system consists of a locking wedge mechanism. An anti-rotation locking system into the actuator for the primary locking wedge is automatic and ensures the primary lock remains fully engaged even when used with high energy vibratory tools. The secondary locking system incorporates a spring- loaded rotating lock that automatically locks on the front pin on the work tool during coupling. Spring applied, hydraulically released on the hydraulic coupler, and spring applied, mechanically released on the mechan- ical coupler. Dual Lock Couplers were designed with the operator in mind allowing the secondary lock to be clearly visible from the cab.

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Edition 47 7-225