Description

Product Reviews

Description

Shinano 55,000rpm Micro Grinder SI-2051SG

Name: Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG
Brand: Shinano Pneumatic Tools Japan
SKU: SI-2051SG
Price: 260 USD
Availability: InStock
Rating: 5 (15 reviews)

This Shinano 55,000rpm Micro Grinder SI-2051SG is a high-speed pneumatic micro grinder designed for precision tasks in various industrial applications. It is ideal for intricate tasks such as working on metal dies, molds, intricate castings, engraving, and wood carving. Its high-speed operation and compact design make it a valuable tool for professionals requiring precision and control in their work.

Key Features:

High-Speed Rotation – It operates at a maximum free speed of 50,000 RPM for precision work.
Compact and Lightweight – Easy to maneuver for fine detailing and engraving.
Air-Powered – Requires an air compressor, offering continuous operation without overheating.
Low Vibration & Noise – Ensures user comfort during extended use.
Collet Size – It's equipped with a 3mm (1/8") bits for fine grinding and polishing, making it suitable for detailed work in confined spaces.
Durability – Made with stainless steel or aluminum for long-lasting performance.

Popular Applications:

Metal Finishing – Smoothing out rough edges and polishing surfaces.
Deburring – Removing excess material from machined parts.
Engraving & Carving – Ideal for jewelry, glass, wood, and metal engraving.
Mold & Die Grinding – Used in precision tooling and mold finishing.
Automotive & Aerospace – Repairs and finishing tasks on delicate parts.

Specification

Collet Size	φ3 , 1/8"
Free Speedr.p.m.(MAX)	50,000
Weightkg/(lb)	0.19/(0.43)
Noise Level *dBA/(power)	71/(82)
Vibration a/k *m/s2	1.2/0.6
Avg.Air ConsumptionCFM/(L/S)	1.0/(0.

*Noise levels according to ISO 15744:2008,ISO 11203:2009
*Vibration level according to ISO 28927

Order Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG with confidence

Availability: 10 units in stock. Product identity: Brand: Shinano Pneumatic Tools Japan · SKU: SI-2051SG.

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.

Frequently asked questions

Will this work with my compressor?

Compare the product's published average air consumption, operating pressure, inlet size and recommended hose with the air available at the tool—not only the compressor tank rating.

What should I confirm before ordering?

Confirm the exact model, working interface, air requirements and the accessories required for your application.

How should final tightening be checked?

Where a fastener has a specified final torque, follow the service procedure and verify it with a suitable calibrated torque wrench.

Product Reviews

15 reviews Write a Review

5
Durable and Realiable

Liam Chen on 28th Mar 2025

One of the best micro air grinders I’ve ever used. The Shinano SI-2051SG delivers impressive power at 55,000 RPM, making fine grinding and polishing effortless. It’s well-balanced, with minimal vibration and noise. The durability and precision make it a great addition to any professional or home workshop. Fantastic tool
5
Highly recommended

Mia Castillo on 28th Mar 2025

I highly recommend it; perfect for precision work Works exceptionally well on metals and ceramics. A top-tier tool for anyone needing fine detailing and finishing. Highly recommended
5
Durable

Caleb Wong on 28th Mar 2025

I’m seriously impressed with this micro air grinder. It’s lightweight, quiet, and easy to maneuver, even in tight spaces. Shinano always delivers quality, and this tool is no exception. If you need precision, this is the grinder to get
5
Excellent Quality

Diego Ramirez on 28th Mar 2025

The Shinano SI-2051SG Micro Pneumatic Air Grinder is an absolute beast. At 55,000 RPM, it delivers incredible precision for fine grinding and polishing. Lightweight and easy to control, it’s perfect for detailed metalwork. The build quality is excellent, and it runs smoothly with minimal vibration. Highly recommend for professionals
5
Excellent tool

Sophia Nguyen on 28th Mar 2025

The Shinano SI-2051SG is compact, powerful, and incredibly precise. It’s great for intricate grinding jobs, and the high RPM ensures a smooth finish. Very little vibration, which makes long use comfortable. A must-have tool for jewelers, machinists, or anyone needing fine detailing work.
5
Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG

Edward Norton on 24th Mar 2025

This grinder keeps a steady airflow even when operating at high RPMs for prolonged periods of time, avoiding overheating. This is essential for preserving accuracy and extending the tool's life. The design of the air flow is excellent. I'm rather impressed.
5
Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG

Bruce Scott on 24th Mar 2025

This micro grinder is ideal for accurate circuit board repair and modification. I can remove and shape components with amazing accuracy thanks to the high RPMs. It is an essential tool for any technician working with electronics. It is quite accurate.
5
Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG

Allen Wayne on 24th Mar 2025

This micro grinder is a wonderful time-saver for me because it allows me to polish and correct microscopic faults with amazing accuracy, the high RPMs make the task go much faster, and the tool is quite dependable. I work in mold repair, and this micro grinder has become vital.
5
Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG

Arthur Morgan on 24th Mar 2025

This micro grinder is a wonderful time-saver for me because it allows me to polish and correct microscopic faults with amazing accuracy, the high RPMs make the task go much faster, and the tool is quite dependable. I work in mold repair, and this micro grinder has become vital.
5
Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG

Joshua J. Kent on 24th Mar 2025

This micro grinder's 55,000 RPM is crazy! It provides me with the utmost accuracy I want for delicate detailing and complex engraving. I feel as though I'm holding a tiny, fast router. The quality is perfect, and the control is amazing.

Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG

Shinano 55,000rpm Micro Pneumatic Air Grinder SI-2051SG

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Shinano 55,000rpm Micro Grinder SI-2051SG