Abaco Telescopic Forklift Boom ATFB25: Extended Reach Stone Handling

Every stone yard eventually runs into the same problem: the load you need to move is sitting somewhere your forklift forks cannot reach. A bundle of slabs pushed to the back of a flatbed trailer. A crate of prefabricated countertops buried deep inside a shipping container. A single slab that has to be lowered over a fence line, a retaining wall, or the far side of a customer trailer parked at an awkward angle. Standard forks stop at the carriage, and inching a counterweighted machine closer to a trailer edge is exactly how tip-overs and crushed toes happen in this trade.

The Abaco Telescopic Forklift Boom ATFB25 answers that problem with a simple piece of engineering: a steel boom that slides over your existing forks, locks to the mast, and telescopes out to place a lifting point far beyond the fork tips. When fully extended, the ATFB25 reaches 138-1/8 inches (3,508 mm), which turns an ordinary yard forklift into a short-reach crane for slings, clamps, and lifting gear. For fabrication shops and distributors handling granite, quartz, marble, and porcelain daily, it is one of the least expensive ways to add real crane capability without buying another machine.

Why a Telescopic Boom Belongs in Every Stone Yard

A forklift is the workhorse of stone material handling, but forks alone are a blunt instrument. Slabs are tall, thin, heavy, and fragile at the edges, and most of the time they are moved vertically in A-frames, racks, and containers rather than stacked flat on pallets. That means the real work of picking a slab is usually done by a boom-mounted clamp, a lifter, or a sling arrangement hanging from a single point above the load. Without a boom, shops improvise with chains wrapped around fork tines, which shifts under load, chews up the chain, and leaves the rigging completely unsecured to the truck.

A telescopic boom converts that improvisation into a controlled, repeatable lift. The ATFB25 slides its two U-shaped base bars over the forklift forks, so the boom is supported along the full heel of the tines rather than hanging off the tips. At the tail end, a fork heel pin ties the boom base back against the forklift mast. That pin matters more than it looks: it keeps the boom from sliding forward off the forks when you brake, tilt the mast, or set a load down and suddenly unload the tips. Abaco designed it specifically to increase safety and prevent slipping during transport and lifting.

The telescopic action is what separates this style of boom from fixed-length fork booms. Because the ATFB25 extends in stages, you can run it short and stiff for dense loads close to the carriage, then walk it out toward its full 138-1/8 inch reach when you need to get a lifting point deep into a container or across a trailer bed. The boom is fabricated from steel throughout for durability and strength, which is what you want in a component that lives outdoors, gets dropped on gravel, and takes shock loads every time a slab settles into a sling.

There is also a workflow argument. Shops that receive containers of slabs or bridge saw equipment typically rent a crane or pay a rigging company when something heavy needs a long reach. Those bills add up fast, and scheduling outside equipment stalls production. A boom that lives on a rack next to the forklift is available in the two minutes it takes to drive the forks into the base bars and set the heel pin. Over a season of container deliveries, tailgate unloads, and machinery moves, that availability is worth as much as the reach itself.

Setting Up and Rigging the ATFB25: A Practical Guide

Mounting the Boom to the Forklift

Start on level ground with the mast vertical and the forks set to the spacing of the boom base. Drive the tines fully into the two U-shaped base bars until the boom heel seats against the fork heels, then install the fork heel pin at the tail end of the boom base so the assembly is captured against the mast. Give the boom a firm shake test before the first lift: there should be no fore-aft slide and no rattle at the pin. If your forklift has fork positioners, lock them; if it uses hook-type forks, confirm the fork retention pins are seated so the tines themselves cannot walk sideways under the base bars.

Extending the Boom and Respecting the Load Chart

Telescopic reach is a trade, and every operator on the crew needs to understand it. As you extend any fork-mounted boom, the load center moves away from the front axle, and the amount the forklift can safely lift drops sharply — the same physics printed on your forklift data plate. Run the boom only as far out as the pick requires, keep the heaviest picks at the shortest extension, and verify the combined weight of boom, rigging, and load against the capacity markings for that extension before lifting. Never guess slab weight; calculate it from thickness and square footage or read it off the packing list, and when in doubt, treat the load as heavier than you think.

Rigging Slabs and Crated Loads Safely

Rig from the boom lifting point with gear rated for the load: shackles closed with full thread engagement, slings protected from stone edges with corner guards, and hooks with working safety latches. For vertical slab handling, pair the boom with a scissor-style slab lifter or clamp so the stone is gripped rather than cradled. Lift a few inches, pause, and watch the rigging settle before committing to the full pick. Travel with the load low and the boom retracted as far as the pick allows, and keep every person out from under the load and away from the swing path — a slab that slips does not give a warning.

Advanced Techniques for Containers, Trailers, and Tight Sites

Container unloading is where a telescopic boom earns its keep. Slab bundles arrive braced against the container walls, and the first bundle is often several feet inside the door — beyond fork reach and beyond the swing of most shop cranes. With the boom extended into the doorway, you can drop a sling or clamp straight down onto the bundle, take the weight, and walk the load out along the container centerline without ever putting the forklift wheels on the container floor. Work the nearest bundle first, retract as the picks get closer, and re-check your extension against capacity every time the reach changes.

Tailgate deliveries reward the same discipline. When a customer trailer or box truck cannot be approached from the side, position the forklift square to the tailgate, extend the boom over the bed, and lower the load onto dunnage without the forks ever crossing the bed rail. Because the lifting point hangs from above, the slab stays plumb as it comes down — no dragging across the deck, no chipped polished edges. On sloped driveways, chock the delivery vehicle and keep the forklift uphill of the load whenever the site allows it.

Machinery moves are the third big use case. Bridge saw beams, CNC gantries, and water treatment tanks all have lifting eyes that sit inboard of their footprint, and a boom lets you reach those eyes without straddling the machine. Rig to the manufacturer lifting points, take the slack out slowly, and watch for load shift as the piece leaves its mounts. For long awkward loads, the telescopic adjustment lets you set the lifting point close to the balance point rather than accepting wherever a fixed boom happens to end.

Wind deserves its own paragraph. A slab in a sling is a sail, and at full boom extension the leverage a gust exerts on the forklift is multiplied. Experienced yards set a hard rule: no extended-boom slab picks in gusty conditions, period. Use a tag line on every long pick so a spotter can control rotation from outside the fall zone, and keep travel speeds to a crawl — the boom moves the load center so far forward that even gentle braking pitches the machine noticeably.

Finally, treat operator training as part of the tool. In the United States, powered industrial truck operators must be trained and evaluated, and adding an attachment changes how the truck handles, so fold boom work into that program. Cover mounting, the heel pin, extension discipline, rigging inspection, and travel rules, then have each operator demonstrate a supervised pick. Post the boom rules at the forklift charging station where everyone sees them daily. A one-page procedure costs an afternoon to write and prevents the kind of incident that ends a small shop.

Communication rounds out the technique list. Long-reach picks put the operator far from the load, often with the mast blocking sightlines, so assign a single spotter and agree on signals before the lift starts. The spotter owns the exclusion zone, watches the rigging angle, and is the only voice the operator responds to; everyone else stays clear and quiet. On container work, where the load emerges from darkness into daylight, have the spotter confirm the bundle is free of its bracing before the boom takes full weight — dunnage nailed to the container floor has surprised more than one crew halfway through a pick.

Inspection, Maintenance, and Long-Term Ownership

Steel booms are simple, which makes them easy to neglect. Build a quick pre-use check into the mounting routine: sight down the boom for bends or twist, inspect welds at the base bars and lifting point for cracked paint or rust lines that can flag fatigue, confirm the heel pin and its retainer are present and undamaged, and make sure the telescoping sections slide and lock properly. Anything bent, cracked, or gouged means the boom comes out of service until it is evaluated — never straighten or weld a load-bearing member in-house without engineering approval.

Between uses, store the boom retracted on blocks or a rack, off the ground and out of standing water. Keep the telescoping surfaces clean; grit between sliding sections accelerates wear and can jam the boom at the worst possible moment. A light film of oil on the sliding surfaces and a dab of anti-seize on the heel pin threads keep the assembly moving freely through winter. Touch up paint scrapes promptly — surface rust on a yard tool is cosmetic at first, but pitting at a weld toe is where cracks like to start.

Document the boom the way you document slings and clamps. Give it an asset number, log the in-service date, and schedule a periodic documented inspection alongside your other lifting gear. Photograph the data markings when the boom arrives, and keep the manufacturer documentation from Abaco Machines with your rigging records so capacity information is always available at the machine, not filed in an office. If the markings ever become unreadable, take the boom out of service until they are restored — an unmarked lifting device is an unrated lifting device.

Ownership math favors the boom over time. It has no hydraulics, no electronics, and no consumables; its service life is measured in decades if it is stored dry and never overloaded. Compare that to even one crane service call per year and the payback period is short. Shops that add a boom typically find new uses for it within a month — loading bins, setting dumpsters, staging A-frames — which is the quiet sign of a tool that fits the workflow rather than fighting it.

One more habit worth building: keep the boom paired with a dedicated rigging kit. A milk crate or job box holding the shackles, slings, corner protectors, and tag lines used for boom work means nobody improvises with whatever hardware is lying around. Inspect that kit on the same schedule as the boom itself, retire cut or heat-damaged slings immediately, and replace corner guards before they wear through. The boom is only one link in the load path, and the load path is only as strong as the sling somebody grabbed in a hurry on a Friday afternoon.

Ready to add reach to your forklift? Order the Abaco Telescopic Forklift Boom ATFB25 from Dynamic Stone Tools, and round out your material handling setup with slab lifters like the Aardwolf Multi-Cup Suction Cup or browse the full range of stone handling equipment at dynamicstonetools.com.