PowerClamp Hydraulic Thumb - Amulet

📘 Overview

A hydraulic thumb for excavator work, built model-specific: the Amulet PowerClamp is made for your exact machine and shares the bucket’s main pin, so the thumb and bucket work as one against each other. It is offered in four configurations, and the choice matters more than any other spec on this page. Non-linkage pins the hydraulic cylinder directly to the clamp for roughly 140° of rotation. Progressive linkage puts a linkage between the cylinder and the clamp, which buys you a more complete sweep of roughly 180°. Each of those is built either for a machine running a plain pin-on bucket, or for a machine running a quick coupler. Eleven machine weight classes, 1-3 Ton through 40-50 Ton.

Model-specific fit. Specify your excavator make, model and year when ordering.

Where this excavator thumb differs from a universal one: the shared main pin means the tines close into your bucket rather than alongside it. You are effectively running an excavator bucket with thumb as a matched pair. On the smallest classes it is a mini excavator thumb at 75 lb; on the largest it is a 2,350 lb clamp. Amulet also builds the universal PowerBrute if a lower-cost, fits-most-machines excavator thumb attachment suits your work better.

🔩 PowerClamp Clamp Styles — Which One You Need

This is the decision the rest of the page hangs on. Amulet builds the PowerClamp in two mechanical styles, each available for machines with or without a quick coupler — four combinations in total:

The practical difference: a non-linkage thumb is pinned straight to the cylinder, so its useful clamping range is the cylinder’s stroke. The progressive linkage multiplies that into a wider arc, which is what you want when you are picking up material of very different sizes without repositioning the machine. Linkage styles are not offered below the 5-6 Ton class, and the linkage-for-coupler build starts at 10-15 Ton — the options above show only what is actually built for your machine.

🔧 Amulet PowerClamp Key Features

• Model-specific build — every PowerClamp is made for one excavator model, not adapted to it. That is why make, model and year are required at ordering.
• Shared main pin — the thumb pivots on the bucket’s own main pin, so thumb and bucket mesh precisely instead of fighting each other.
• Custom meshing tines, cut to interlock with your bucket. On excavators over 20,000 lb Amulet supplies a full meshing tooth bar instead, with wider or narrower tooth arrangement available.
• Serrated teeth with webbing for positive gripping action on round and irregular material.
• Cushioned hydraulic cylinders with extra heavy-duty rods — the cushioning absorbs end-of-stroke shock that kills uncushioned thumbs.
• Induction-hardened, large-diameter pins and bushings throughout.
• Heavy gussets and reinforcement where the loads concentrate.
• Retracts close to the dipper when not in use, so it is out of the way for normal digging.
• High-strength alloy steel construction — T-1 and AR400 on non-linkage builds.
• 2-year warranty, 100% made in the USA at Amulet’s plant in Rathdrum, Idaho.

⭐ Why Contractors Specify a PowerClamp

• It grips like a thumb, not like a claw. An excavator hydraulic thumb that shares the bucket’s main pin means the tines close into the bucket rather than alongside it — the difference between holding a log and dropping it.
• 180° is a different tool from 140°. If your work runs from rip rap to full-size timber, the progressive-linkage build holds both without repositioning. That is what you are paying the difference for.
• Built for the abuse. Amulet rates the PowerClamp for demolition, land clearing, erosion control, general construction and solid waste handling — five application classes, on the same thumb.
• Cushioning is not a luxury on a thumb. A hydraulic thumb slams at end of stroke every cycle. Cushioned cylinders with heavy rods are why these last through a demolition season.
• It gets out of the way. Retracting tight to the dipper means you are not choosing between having a thumb and being able to dig.

📊 PowerClamp Hydraulic Thumb for Excavator Models by Weight Class

Every class below is stocked. Which clamp styles appear depends on the class — linkage builds start at 5-6 Ton and the linkage-for-coupler build at 10-15 Ton.

Thumb weight is the range across the clamp styles offered in that class; the linkage builds are the heavier of the two mechanisms. Weight determines what the thumb takes off your lift capacity and what the freight costs at checkout.

📋 Amulet PowerClamp Specifications

🚜 PowerClamp Machine Compatibility

The PowerClamp is a model-specific, shared-main-pin hydraulic thumb. Fitment is determined by your machine weight class and by your machine’s bucket pin and boss dimensions — and, critically, by whether your machine runs a quick coupler, which decides between the standard and for-coupler builds. Find your machine below to identify its weight class, then select that class and your clamp style from the options above.

Fits machines from Bobcat, Bradco, Case, Caterpillar, Daewoo/Doosan/Develon, Ford, Gehl, Hitachi, Hyundai, IHI, Ingersoll-Rand, JCB, John Deere, Kobelco, Komatsu, Kubota, Link-Belt, Liu Gong, Mustang, New Holland, Samsung, Sany, Takeuchi, Terex, Thomas, Volvo, Wacker Neuson, Woods, XCMG, Yanmar — 30 manufacturers in total. Find your exact model in the fitment chart below.

Find your machine in the chart, then choose that weight class from the options at the top of this page and add it to your cart.

Machine list from the 2026 Amulet price book, filtered to the weight classes this product covers. Not every machine listed accepts every Amulet product. The PowerClamp also requires a two-way hydraulic circuit on the stick — note that two hoses running up the stick does not always mean two-way hydraulics. If your machine is not listed, or you are not sure which class it falls into, send us your make, model and year on chat or at support@eskidsteer.com and we will confirm it.

🧱 What the PowerClamp Is Rated For

• Demolition — sorting and loading broken concrete, steel and mixed debris with control a bucket alone cannot give.
• Land clearing — gripping brush, stumps and timber for removal and stacking.
• Erosion control — placing rip rap and rock armour precisely on slopes and channel banks.
• General construction — pipe handling, material placement and everyday grabbing work.
• Solid waste handling — transfer station and scrap work where an open bucket loses material.
• Logging — log and debris loading, which is where the 180° progressive linkage build earns its price.

❓ PowerClamp — Common Questions

🔗 What the PowerClamp Works With

• Pair the thumb with the Amulet HoeMate Multi-Tine Rake in place of your bucket and you have a full open-tine grapple — the custom 4/5-tine rake can be built to mesh with your clamp.
• The Amulet PowerBrute Hydraulic Thumb is the lower-cost universal alternative if a model-specific build is more than the job needs.
• No spare hydraulic circuit? The Amulet B.R.U.T. Rigid Thumb does similar work with four manually set positions and no plumbing.
• The PowerClamp is built differently for coupler machines — if you are adding a coupler, see the Amulet Mini-Hitch Quick Coupler.

🎥 PowerClamp Videos

Non-Linkage PowerClamp