We are the dealer of Shinano tools in the USA. Our Shinano Pistol Pneumatic Air hammer SI-4120A comes with with "with Retaining Spring (400-8) x 1 without Chisels" accessories
About this tool
Shinano Pneumatic Hammer SI-4120A Shinano devised total solution of pneumatic tools which are build in Japan for your reliability and durability. With Shinano pneumatics, you can now focused on the job at hand as. Shinano's pneumatic tools is the smarter investment as it have fewer moving parts thus making it maintenance friendly, safer on operational, cheaper operational cost compared to electric tools which consumes higher energy when unstable current being used at variable speed. Shinano SI-4120A is an industrial pneumatically powered tool with the combination of power, compactness and light weight for a better operator comfort at speed. Shinano Pneumatic Hammer SI-4120A is equipped with a unique vibration dampening design for lesser fatigue on working with thick coat removal. Be advised that, if you have a light air compressor of 50% duty cycle, your motor can perform safely but you may overheat your compressor. Hence, a 5 hp compressor with a 100% duty cycle is going to make more air than a 7.5 hp compressor that only has a 75% duty cycle. With Shinano SI-4120A you can also use it as a chipping hammer to remove heavy rust, loose scale, weld scalers, coating, layered sea shell and paint, leaving a clean metal surface to work on. Different models offer choices of number of needles, operating speed, and power levels. For comparable alternative on removing rust and coating you can also opt for Shinano Pneumatic Needle Gun Scaler SI-4160 or Shinano SI-4160.
"When brute-force chipping meets Japanese engineering, you get the Shinano SI-4120A. Slicing through structural rivets, separating frozen auto panels, and chipping concrete becomes effortless. Boasting a heavy-duty spool-valve mechanism that fires 3,000 hard-striking blows per minute, it is the uncompromising choice for high-intensity commercial fabrication."
Comprehensive Data Attributes Sheet
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Technical Attribute
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Certified Specification Value
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Brand
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Shinano Pneumatic (Inc. Japan)
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Model Number
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SI-4120A
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Product Category
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Pneumatic Hand Tools > Air Hammers & Chipping Hammers
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Shank Size / Opening
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$10.2\text{mm } (0.401"\text{ Parker Taper})$
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Blows Per Minute (BPM)
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$3,000\text{ BPM}$
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Piston Bore Diameter
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$19\text{mm } (3/4")$
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Piston Stroke Length
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$67\text{mm } (2.64")$
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Average Air Consumption
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$3.0\text{ CFM}$
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Max Continuous Air Flow
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$12.0\text{ CFM}$
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Recommended System Pressure
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$90\text{ PSI } (6.2\text{ Bar})$
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Air Inlet Size
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$1/4"\text{ NPT}$
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Minimum Air Hose ID
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$3/8"\text{ (10mm)}$
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Sound Level (ISO 15744)
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$95\text{ dBA}$ (Power Level: $106\text{ dBA}$)
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Vibration Level (ISO 28927)
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$12.3\text{ m/s}^2$
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Net Weight
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$3.52\text{ lbs } (1.60\text{ kg})$
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Overall Length
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$8.58\text{ Inches } (218\text{mm})$
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Duty Cycle Rating
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Continuous Heavy B2B / Demolition Grade
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⭐ What Makes It Better (Internal Tech & Materials)
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Hardened Steel Barrel & Piston: Cylinder bore is precision honed and heat-treated to resist scoring and wear during continuous metal-on-metal impact cycles.
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Advanced Spool-Valve Mechanism: Features a professional-grade spool valve system that produces harder, more consistent blow energy than cheap ball-valve spring alternatives.
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Comfort Grip & Safe Lever: Covered with an insulating composite grip to protect hands from cold compressed air, paired with a throttle lever for fine stroke speed control.
Industrial Applications & Workflows
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Heavy Automotive Restoration: Punching out frozen control arm ball joints and shearing off seized exhaust clamp fasteners.
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Industrial Pipe & Tank Maintenance: Peeling away rusted structural flanges and scaling off slag on thick weldments.
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Light Masonry Demolition: Chipping away excess cured grout, channeling concrete walls, and peeling ceramic floor tiling.
In the Box & Support Specifications
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Standard Items Included: Shinano SI-4120A Air Hammer, Standard Chisel Retaining Spring, 1/4" NPT Male Air Plug, Operations Manual, and detailed exploded parts breakdown.
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Authorized Dealer Status: 100% Genuine Shinano tool. Sold as an Authorized USA Distributor with original factory parts availability and support.
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Warranty: Full 1-Year Manufacturer Factory Warranty.
About Shinano pneumatics
- Manufactured in Japan by SHINANO INC, these tools and accessories offer uncompromising industrial quality at reasonable prices.
- Some SHINANO models have been in continuous production since the Brand was first introduced into Australia in 1978.
- Large inventories of spare parts are held in stock and these include some parts for discontinued models.
- SHINANO Air Tools are your choice if you need tools that will give long reliable service in industrial production situations.
