JRB Excavator Thumbs

JRB Excavator Thumbs Information

JRB’s range of excavator thumbs provides the versatility needed to get the most out of your excavator.  The thumb’s rugged design combined with easily maintained parts provide a product that will provide years of productive service, by allowing you to pick and move more material more efficiently.

Features

We offer three types of excavator thumbs: 

Progressive Link:

• Lightweight design provides peak machine stability and allows for more payload and lower fuel consumption
• Full rotation with bucket allows pickup of items throughout the bucket’s range of motion
• Press-in bushing
• Large rod diameter with 1/2″ wall housing
• Multiple T-1 steel fingers for rugged construction
• Lock-back bracket prevents the thumb from drifting when not in use
• Recessed zerk with housing
• Threaded six-bolt reinforcement cap
• Larger bolt diameter for thumb pin retention
• Spherical bearings in the hydraulic cylinder and in the progressive link to thumb
• Grease zerks bracket for hydraulic cylinder safety
• Thick wall tubing for multiple finger placement

Main Pin:

• Minimal welding for quick install and less stress on critical boom structures
• Field-replaceable components make it easy to replace common wear items onsite with minimal downtime
• Efficiently operates on all machines
• Integrated design on side plates and fingers for greater strength
• Special finger serration for increased holding ability
• Minimal welding required for installation onto the machine
• Linkage allows a rotation of up to 140 degrees for maximum grappling

Weld On:

• Low-profile thumb storage provides improved visibility
• Hydraulic action offers versatile thumb positioning
• Multi-position thumbs for optimum performance
• T-1 steel construction for greater strength and longer wear life