Shinano SI-2210 4" Pneumatic Disc Sander - 13,000 RPM Compact Design - High-Speed Automotive Paint Prep & Industrial Weld Grinding
This Shinano 4" Disc Sander SI-2210 is a high-speed pneumatic disc sander designed for efficient material removal and surface preparation. Its compact and lightweight design allows for easy one-handed operation, making it suitable for various sanding tasks.

Our Shinano 4" Disc Sander SI-2210 is a power tool used for sanding, smoothing, and shaping materials like wood, metal, and plastic. It features a circular sanding disc mounted on a motor-driven spindle, which rotates at high speeds to remove material efficiently.
Key Features:
- Disc Size – Typically ranges from 3 inches to 12 inches.
- Motor Power – Higher wattage means more material removal efficiency.
- Speed (RPM) – Faster speeds provide smoother sanding.
- Dust Collection System – Helps maintain a clean workspace.
- Adjustable Table or Guide – Provides control for precise sanding angles.

Common Uses:
- Woodworking – Shaping and finishing wooden surfaces.
- Metalworking – Removing rust and burrs from metal.
- Automotive Work – Smoothing body panels and paint prep.
- Plastic and Composite Work – Refining edges and surfaces.
Why settle for weak, throwaway air sanders when you can put genuine, Japanese-engineered precision to work for under fifty dollars? The Shinano SI-2210 is a heavy-duty 4-inch workhorse designed to strip rust, level welds, and prep panels all day without breaking a sweat or stalling under load."
Comprehensive Data Attributes Sheet
| Technical Attribute | Certified Specification Value |
| Brand | Shinano Pneumatic (Inc. Japan) |
| Model Number | SI-2210 |
| Product Category | Pneumatic Disc Sanders / Grinders |
| Free Speed RPM | 13,000 RPM |
| Drive / Spindle Thread | 3/8"-24 UNF Male Thread Spindle |
| Disc Diameter Size | 4.0 Inches (100mm) |
| Average Air Consumption | 3.5 CFM |
| Max Continuous Air Flow | 14.1 CFM |
| Recommended System Pressure | 90 PSI (6.2 Bar) |
| Air Inlet Size | 1/4" NPT (Industrial Standard) |
| Minimum Air Hose ID | 3/8" (10mm) |
| Sound Level (ISO 15744) | 89 dBA (Power Level: 100 dBA) |
| Vibration Level (ISO 28927) | 2.5 m/s² (K-factor: 0.8 m/s²) |
| Net Weight | 2.6 lbs (1.18 kg) |
| Overall Length | 8.86 Inches (225mm) |
| Duty Cycle Rating | Continuous Commercial-Grade / Industrial |
What Makes It Better (Internal Tech & Materials)
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Japanese Tool Steel Internals: The internal cylinder, rotor, and planetary gears are machined from high-tensile alloy steel to prevent thermal expansion and wear over thousands of operational hours.
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Composite Structural Housing: Engineered with an insulating composite sleeve that blocks cold compressed air transfer to the user's hands, preventing muscle cramping.
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Adjustable Rear Exhaust: Features an adjustable 360-degree rear exhaust deflector that directs exhaust air away from the work surface and the user’s face.
Industrial Applications & Workflows
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Auto Body Restoration: Removing old clearcoats, primers, and bondo filler down to bare metal without marring the sheet profile.
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Structural Welder Prep: Beveling steel plate boundaries prior to structural welding and polishing down hard weld beads post-operation.
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Industrial Maintenance: Scraping thick gasket adhesives, heavy scaling, rust, and scale build-up from heavy industrial machinery parts.
In the Box & Support Specifications
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Standard Items Included: Shinano SI-2210 Disc Sander, 4" Backing Pad, Pad Lock Wrench, 1/4" NPT male plug connector, Instruction Manual, and Parts Schematic.
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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.
High-Margin System Bundling
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Can I run this sander on a small portable compressor?
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Is this tool compatible with standard hook-and-loop or roloc backing pads?
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How often must I oil this pneumatic sander?
These specifications highlight the SI-2210's capability to deliver efficient performance while maintaining user comfort and control.
*Noise levels according to ISO 15744:2008,ISO 11203:2009
*Vibration level according to ISO 28927
Contact Us: For further details and availability within the storefront in your location.
Order Shinano SI-2210 4-Inch Heavy-Duty Pneumatic Disc Sander (13,000 RPM | Made in Japan) with confidence
Availability: 10 units in stock. Product identity: Brand: Shinano Pneumatic Tools Japan · SKU: SI-2210.
This pneumatic tool page retains the original product information above and adds the buying checks below to help confirm fit before checkout.
Common use cases
- Automotive and fleet maintenance
- Industrial MRO and production support
- Fabrication, repair and workshop operations
Before you order
- Confirm the drive, collet, pad or accessory interface matches the job.
- Verify compressor CFM, operating pressure, hose diameter and coupler capacity under load.
- Use compatible, application-rated accessories and the required personal protective equipment.
Included-items check
The sale includes the product identified on this page and only the accessories expressly stated as included in the original description. Images may show application context; do not assume surrounding equipment or accessories are supplied unless listed.