AMI Attachments
Thumbs
AMI Attachments is an industry leading North American manufacturer of quality, reliable attachments for excavators, backhoes, wheel loaders and other heavy construction equipment. With a head office and manufacturing facility in Ontario, west of Toronto in the Region of Waterloo, AMI Attachments serves the heavy equipment attachment market across Canada and the United States.
Thumbs up! The AMI Hydraulic Weld On Thumb offers a practical option for operators who are looking for durability, impressive holding strength and flexible thumb positioning. Ideal for clamping and moving a variety of materials, including brush, boulders, logs and poles, the thumb folds tight to the stick when not in use and features serrated tines for better gripping. Available in multiple widths and lengths to match various coupler and bucket configurations.
The AMI Stick Pivot Hydraulic Thumb provides great functionality to your excavator and backhoe. Stick Pivot means the thumb rotates on the same pivot point as the original bucket pin, not a secondary weld-on pivot point. The hydraulic cylinder is also directly connected to the thumb, covering 65-75% bucket rotation. Since both the thumb and the bucket rotate on the same axis, the thumb tip and bucket teeth maintain constant grip on the load when rotating. Unlike thumbs that use a secondary weld-on pivot point, the AMI Stick Pivot eliminates scraping and slippage and reduces risk of release during rotation.
Keep the pressure on productivity with AMI's Progressive Link Hydraulic Thumb attachment for excavators. Designed to provide constant pressure throughout the entire cylinder range, the Progressive Link Thumb achieves more than 180 degree rotation to easily reach and pick up objects close to your excavator. The extra linkage expands the thumb's reach across the bucket's entire rotation – including at full roll-out – to deliver superior material handling in the harshest conditions.
When you need to pick up large, heavy objects, grab bucketfuls of debris or demolish a building, get a tighter grip on productivity with AMI’s Graptor Bucket. Powered by a helical actuator, the Graptor Bucket features incredible holding strength. The built-in rotary actuated thumb gives operators improved flexibility and precision by maintaining constant grip on the load throughout the bucket’s entire rotation. Neatly integrated into the top crossbar of the Graptor, the actuator produces up to 54,000 foot-pounds of holding strength at 3,000 psi – putting out the most torque in the most compact design - making the Graptor a powerful tool that keeps a tight handle on heavy, bulky loads. US patents 10,774,498 and 10,774,501.
When multi-tasking is a must, the AMI Attachments Jawbone 4-in-1 Excavator Bucket responds with a multi-purpose design that digs, grades, grips and clamshells. At first glance, the AMI Jawbone excavator bucket looks no different than a regular digging bucket, however inside the crossbar is a powerful hydraulic rotary actuator. This provides all the power of a hydraulic cylinder-style thumb but without custom installation. With as much holding power and gripping strength as a thumb, the AMI Jawbone 4-in-1 Excavator Bucket handles logs, rocks and scrap easily. You can also switch between digging and ditching with the ability of two different cutting edges on one bucket. Now you can dig and grade without costing you downtime changing buckets. For swampy material handling, the AMI Jawbone Excavator Bucket also works as a clamshell bucket for loading and dumping straight down.