Find Thumb Attachments For Sale
Thumb attachments are claw-like devices which attach to excavators, allowing the machine to gasp, lift, and transport materials as the thumb makes contact with the excavator bucket, much as a human hand uses its thumb to hold and move objects. Installing a thumb attachment to an excavator significantly expands the functionality of the machine to include the handling of a diverse range of materials that otherwise would not fit in or be moved by the bucket. Often awkward or bulky, such materials include large rocks, pieces of concrete or steel, stumps, branches, and other demolition debris. Thumb attachments thus provide excavators with extra usefulness in construction, demolition, forestry, landscaping, agriculture, and waste management. When not in use, thumbs can fold out of the way so that the excavator can engage in standard digging and loading.
New and used thumb attachments for sale on Equipment Trader are produced by manufacturers such as Amulet, Caterpillar, CP, Gentec, PSM, Tag-A-Long, and Werk Brau. The primary distinction between thumbs are between mechanical devices and hydraulic attachments. Mechanical thumbs are mounted with a weld-on bracket and remain fixed in a single position. Excavators with mechanical thumbs grasp objects by curling the bucket against the fixed thumb. Hydraulic thumbs, which are more popular, are capable of movement, which allows them to secure a more well-placed and stronger grip. Thumbs also come in a variety of shapes. A thumb attachment may have one, two, or multiple tines (prongs). Thumbs with more tines and less free space at the lip are effective for securing and transporting smaller objects, while thumbs with fewer tines and more free space at the lip are ideal for gasping and moving larger or more awkward materials.
Thumb attachments are relatively cheap, considering the extent to which they increase an excavator's versatility and capabilities. When purchasing a thumb, it's important to take the proper measurement of both the excavator bucket and the thumb, and ensure that the thumb size matches the bucket. A buyer will also want to be sure that the thumb's hydraulic cylinder provides enough gasping power for the intended job. Typically users want the thumb tines to seamlessly intertwine with the teeth of the bucket, but sometimes it may be beneficial for them to connect directly; decide what functionality you want before installing your thumb attachment. During operation, be sure to follow recommended lifting capacities, and commit to proper maintenance of the device, including keeping it clean and greased, and replacing tines when they become dull.