Features:

HONDA GXR120 4.0 HP ENGINE

When your job demands serious force without the bulk, the Honda GX1200 4.0 HP Engine answers with authority. You command a massive 3372 Lbf of driving power in a streamlined design built for tight spaces and nonstop momentum. It starts effortlessly, runs smooth, and keeps your crew locked in and productive. Lighter handling means faster setups, less strain, and total confidence, so you deliver bold results with raw, efficient power exactly where it counts most.

3372 LBF COMPACTION FORCE

You unleash a commanding 3372 Lbf of compaction force powered by the proven Honda GXR120 4.0 HP engine. This machine delivers deep, unwavering impact that feels bold, not bulky. Its effortlessly, transport faster, and work longer with less fatigue. You gain more power per pound, smoother control, and total confidence on demanding sites, so you move fast, hit hard, and finish every job feeling unstoppable.

NORTH AMERICAN PISTON POWERHOUSE

Feel the force, 3372 Lbf of raw, unshakable compaction muscle, driven by piston power and proudly manufactured in Texas. Built for North American job sites where durability and performance aren't optional, this machine delivers relentless power that never quits. The RM77 provides the perfect balance of maneuverability and performance, making it ideal for trench work, patching, and confined jobsite applications.

NORTH AMERICAN POWER CLUTCH

Engineered for the grit of real job sites, the North American Power Clutch delivers seamless engagement and unstoppable torque transfer, so every ounce of your engine's power goes exactly where it's needed. Built tough for harsh conditions, it keeps your equipment moving with smooth, responsive control. You'll feel the difference in every start, every shift, every push forward. When you're up against tight deadlines and rugged terrain, this clutch keeps you in control and ahead of schedule.

WELDED IN NORTH AMERICA

Proudly welded in North America, this machine is a symbol of strength, precision, and craftsmanship you can trust. Every weld is a mark of durability, engineered to endure the relentless demands of professional job sites. Built local means built right, with unmatched attention to detail and rugged reliability. When you choose this rammer, you're not just getting a machine, you're backing North American skill, sweat, and pride. It's tough. It's tested. It's made to move mountains.

OIL LEVEL SIGHT GLASS

The oil level sight glass puts critical engine insight right where you need it. With a quick glance, you instantly know your oil level, no tools, no guesswork, no downtime. That clarity protects your engine, prevents costly damage, and keeps performance smooth and confident throughout the day. You work faster and smarter, staying focused on the task instead of maintenance. It's a small detail that delivers big peace of mind and keeps your machine running strong.

LIFTING HOOK

The integrated Lifting Hook makes transporting your machine effortless, just hook, lift, and go. Whether you're moving gear with a crane, hoist, or pulley, this rugged feature is built for secure, balanced lifts in demanding environments. No more wrestling with awkward loads or wasting precious time. It's strength where you need it most, helping you move faster, safer, and with total confidence. When the job gets heavy, the lifting hook does the heavy lifting for you.

ENGINE PROTECTION CAGE

Your jobsite throws punches, this cage hits back. The rugged Engine Protection Cage shields vital components from impacts, drops, and jobsite abuse, keeping your machine running strong through it all. Reinforced steel construction absorbs the chaos so you can stay focused on the task ahead. No worries, no downtime, just solid protection where it matters most. Because when the engine is safe, your productivity stays unstoppable. Built tough to protect what powers your performance.

ANTI-VIBRATION HANDLE BUSHINGS

Anti-Vibration Handle Bushings absorb intense shock and reduce hand fatigue, allowing you to compact longer with greater comfort and control. Designed for high-impact ramming, these bushings minimize vibration transfer so your grip stays steady and your body stays fresher. Less strain, more stamina, because when you're in command, the compaction is cleaner, faster, and far less taxing on you.

NORTH AMERICAN THROTTLE CONTROL

Take Control. Stay Productive.Built tough in North America, our rugged Throttle Control is engineered for the relentless demands of the jobsite. With smooth, responsive adjustment at your fingertips, you can dial in the exact power you need, whether you're compacting heavy subgrade or fine-tuning for tight corners. It's intuitive, durable, and built to last. You're not just running the machine, you're commanding it.

13.25" x 11.25" SHOE SIZE

The 13.25" x 11.25" shoe size delivers concentrated compaction power right where you need it, tight corners,trenches, and around obstacles. Designed for precision and performance, this compact footprint gives you total control without sacrificing impact. It's perfect for detailed work that demands accuracy, allowing you to finish edges cleanly and navigate confined spaces effortlessly. When every inch matters and the pressure is on, this shoe size helps you move with confidence and finish with perfection.

FUEL TANK

The easy access fuel tank keeps your momentum strong and your downtime low. You refuel quickly and cleanly, even on tight job sites, without wrestling with awkward caps or panels. That means fewer interruptions, smoother workflow, and more time delivering results. Designed for speed and convenience, this feature keeps you moving forward with confidence, energy, and control, so your machine is always ready when the job demands everything you've got.

PNEUMATIC WHEEL KIT INCLUDED

With the included pneumatic wheel kit, you move your machine effortlessly across rough terrain and crowded job sites. You save time, energy, and your back with smooth rolling mobility that feels effortless, even when fully loaded. Air-filled tires absorb shocks, reduce strain, and keep you in control from truck to trench. You spend less time hauling and more time working, arriving ready, focused, and powerful—exactly how every job should begin.

ASK ABOUT OUR PDI SERVICE

Want your RM77 Tamping Rammer ready to get to work the moment it arrives? Ask us about our comprehensive HOC Pre-Delivery Inspection (PDI) service. Through detailed inspection and professional testing, we ensure every unit meets the highest standards of performance, reliability, and power, right out of the box. With our PDI service, your tamping rammer will arrive fully prepped, fully tested, and ready for immediate use, so you can get straight to the job with complete confidence.

HOC RM77 Jumping Jack Tamping Rammer - Honda GXR120, 3372 Lbf Impact Force

The HOC RM77 is a premium heavy-duty jumping jack tamping rammer engineered for contractors, utility crews, and construction professionals who require maximum compaction power for demanding soil conditions. Equipped with the reliable Honda GXR120 engine and delivering an impressive 3372 lbf of impact force, the RM77 is ideal for trench work, cohesive soils, foundations, and confined-area compaction. Built with North American components, advanced vibration reduction, and rugged protective features, this rammer offers exceptional performance, durability, and operator comfort on every jobsite.

KEY FEATURES

Engine: Honda GXR120 4 HP, specifically engineered for rammers, offering superior torque and efficiency.
3372 Lbf Pound Force: Delivers exceptional compaction power for deep, uniform soil compression.
North American Piston: High-strength piston designed for long service life under continuous heavy use.
North American Clutch: Ensures consistent engagement, smooth operation, and maximum durability.
Throttle Control: Provides precise and responsive control during operation.
13.25" x 11.25" Shoe Size: Optimal shoe dimensions for stable, high-performance compaction.
Engine and Machine Cage Protection: Heavy-duty protective cage shields key components from impact damage.
Oil Sight Glass: Easy visual monitoring of oil level for improved maintenance accuracy.
Anti-Vibration Handle Bushings: Reduces operator fatigue and increases comfort during extended use.
Lifting Handle: Allows easy manual lifting and repositioning.
Lifting Hook: Perfect for lifting with cranes or equipment during transport.
Pneumatic Wheel Kit: Included wheel kit for effortless mobility around the jobsite.

APPLICATIONS / USE CASES

Trench Compaction: Ideal for narrow trenches where plate compactors cannot reach.
Cohesive Soil Compaction: Performs exceptionally well in clay, silt, and mixed soils requiring high impact force.
Footings & Foundations: Ensures properly compacted soil for structural stability.
Pipe & Utility Backfill: Great for compacting soil around utilities, conduits, and drainage systems.
Confined Work Areas: Designed for small spaces and tight maneuvering on construction sites.

WHAT’S INCLUDED

HOC RM77 Jumping Jack Tamping Rammer
Pneumatic Wheel Kit
Lifting Handle & Lifting Hook
Operator’s Manual

TECHNICAL SPECIFICATIONS

ENGINE: Honda GXR120 4.0 HP
FUEL: Gasoline
FUEL CAPACITY: 2.2 L
IMPACT FORCE: 3,372 Lbf
MAX JUMPING STROKE: 31.50 in
PLATE SIZE: 13.25" x 11.25"
OPERATING WEIGHT: 169.76 lbs (77 kg)

FREQUENTLY ASKED QUESTIONS

1. What type of soil is the RM77 designed for?
The RM77 excels in cohesive soils such as clay and silt, where high-impact compaction is essential.

2. Does this model come with a wheel kit?
Yes, the RM77 includes a pneumatic wheel kit for easier transport around the jobsite.

3. How much compaction force does it produce?
The RM77 delivers 3372 lbf of compaction force, one of the strongest in its class.

4. Is the Honda GXR120 engine reliable for rammer use?
Yes, the GXR120 was engineered specifically for rammers, providing high torque, durability, and low vibration.

5. What maintenance features help reduce downtime?
The unit includes an oil sight glass, accessible lubrication points, and durable North American components for long-term reliability.

Shipping:

This product qualifies for Free Shipping. There are no minimum purchase requirements or hidden fees. The price you see is the price you pay, without any surprises at checkout.

Quality assurance is our top priority. Before any item leaves our warehouse, it undergoes a Complimentary Pre-Inspection. This process ensures that what you receive is exactly what you ordered, in perfect condition.

Time is precious, and we respect yours. Our Unparalleled Speed in processing and shipping orders means you won't have to wait long for your purchase. Our efficient logistics team works tirelessly to ensure that your order is dispatched promptly and arrives well within the estimated delivery time of 3-5 Days.

Above all, we prioritize your Peace of Mind. From secure packaging to reliable delivery partners, every step of the shipping process is designed to ensure your order reaches you safely and without any hassle. Plus, our customer service team is always here to help with any questions or concerns, providing you with a worry-free shopping experience.

Warranty:

At HOC, we meticulously select our dealers from a pool of globally renowned entities, ensuring that we offer only the best to you. Our commitment to excellence is further reflected in our offering of the most Comprehensive Warranty Periods among equipment dealers across North America.

This approach allows you to make your selection with a sense of confidence and assurance, knowing well that your purchase is under the protection of a warranty that's as steadfast and dependable as the product itself. We invite you to experience the peace of mind and trust that come with choosing HOC, where your satisfaction and security are our topmost priorities.

To view the specific warranty period applicable to this product, and to delve into the details of your protection, please click the link below.

View HOC Warranty.pdf