---
product_id: 660023865
title: "SI FANG Turbine Reciprocating Pneumatic Ultrasound Grinder Micro Pneumatic Air Pencil Die Grinder Kit for Mould Metal Lapping Filing Grinding Buffing Polishing Sanding Tools"
brand: "si fang"
price: "A$395"
currency: AUD
in_stock: true
reviews_count: 5
url: https://www.desertcart.com.au/products/660023865-si-fang-turbine-reciprocating-pneumatic-ultrasound-grinder-micro-pneumatic-air
store_origin: AU
region: Australia
---

# 90 PSI air pressure operation Low vibration & noise 28,000 RPM max speed SI FANG Turbine Reciprocating Pneumatic Ultrasound Grinder Micro Pneumatic Air Pencil Die Grinder Kit for Mould Metal Lapping Filing Grinding Buffing Polishing Sanding Tools

**Brand:** si fang
**Price:** A$395
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your craft with precision air-powered finesse!

## Quick Answers

- **What is this?** SI FANG Turbine Reciprocating Pneumatic Ultrasound Grinder Micro Pneumatic Air Pencil Die Grinder Kit for Mould Metal Lapping Filing Grinding Buffing Polishing Sanding Tools by si fang
- **How much does it cost?** A$395 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/660023865-si-fang-turbine-reciprocating-pneumatic-ultrasound-grinder-micro-pneumatic-air)

## Best For

- si fang enthusiasts

## Why This Product

- Trusted si fang brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Versatile Mastery:** Perfect for polishing, grinding, lapping, and buffing molds & jewelry
- • **Precision Powerhouse:** Turbocharged 28,000 RPM for flawless metal finishing
- • **Compact & Comfortable:** Ergonomic pencil style design for extended professional use
- • **Effortless Air-Driven:** Operates at 90 PSI with minimal air consumption for efficiency
- • **Whisper-Quiet Performance:** Low vibration and noise keep your workspace focused

## Overview

The SI FANG Turbine Reciprocating Pneumatic Ultrasound Grinder is a compact, air-powered tool delivering up to 28,000 RPM with low vibration and noise. Designed for precision polishing, grinding, and surface treatment of molds and jewelry, it operates efficiently at 90 PSI without the need for lubricating oil, making it an essential upgrade for professionals demanding flawless metal finishing.

## Description

International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Features

- Suitable for industry polishing, grinding and surface treatment of industry mold and jewelry.
- Turbine reciprocating pneumatic ultrasound grinding machine,using different fixture, can clamping mould , mini ceramic fiber oilstonefile and other ground tool,to all sorts of metal cutting,narrow slotgrinding polishing to mirror etc . Especially mould parts of precision processing , widely applied in all kinds of abrasive
- Air pressue: 90 PSI, Air consumption:0.08 m3/min,No need of lubricating oil,RPN: 30000 /min
- Small volume, feel is good, low vibration, low noise, Speed and torque
- International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | SI FANG |
| Material | Plastic Metal |
| Style | Pencil |
| Power Source | Air Powered |
| Colour | Blue |
| Item Weight | 0.59 Kilograms |
| Maximum Rotational Speed | 28000 RPM |
| Manufacturer | SHUQIU |
| Country of Origin | USA |
| Item model number | 0c87c32d-ba14-47a3-bb38-e35c90594921 |
| Package Dimensions | 24.64 x 19.05 x 4.83 cm; 590 g |
| ASIN | B07SJZKVX2 |

## Product Details

- **Brand:** SI FANG
- **Material:** Plastic Metal
- **Style:** Pencil
- **Power Source:** Air Powered
- **Colour:** Blue

## Images

![SI FANG Turbine Reciprocating Pneumatic Ultrasound Grinder Micro Pneumatic Air Pencil Die Grinder Kit for Mould Metal Lapping Filing Grinding Buffing Polishing Sanding Tools - Image 1](https://m.media-amazon.com/images/I/61dtNlWKUEL.jpg)

## Questions & Answers

**Q: Your pictures shows a plastic connector between the motor and collet, how well do you think it handle the reciprocal motion?**
A: It seems to be functioning quite well and I have put several hours on mine

**Q: What is the stroke length? How many strokes per minute minimum and maximum?**
A: This is ultrasonic and not profiler

**Q: Is there any warranty?**
A: I'm not sure if there is a warranty but considering the price is not even one quarter of the price on most ultrasonics l considerate a good investment are you smiling regularly with no issues

**Q: What kind of air coupler is used in this item?**
A: That is an excellent question.  The air coupler is not recognizable to me and doesn't fit any connections that I know of (industrial, automotive or ARO), and there is no way to switch it out, so probably going to have to return the item.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 







  
  
    Well made tool.
  

*by T***H on Reviewed in the United States on 25 March 2024*

This is what I've needed for quite some time. The short stroke is great for detailed work and the variable rate is useful as well. The only downside is the spacing of the slot is just a bit too wide to hold a blade for cutting rather than sanding. As a sander it is amazing!

### ⭐⭐⭐⭐⭐ 







  
  
    True Ultrasonic Grinding Performance at a Really Nice Price
  

*by S***. on Reviewed in the United States on 29 September 2023*

I am really impressed by this ultrasonic air-pencil grinder.I use it to relieve (open up) dimensions on slots and holes in laser-sintered components in 316L stainless steel in very fine increments of 0.0001” to 0.001” to make passage for inter-locking parts needing press-fit to slip-fit clearances.I much prefer this air-pencil grinder to using a milling machine to post-process my 316L SS parts as milling tends to heat and work-harden the surfaces.  When using this air-pencil grinder, my 316L SS parts stay cool to the touch and never seem to even get warm.Though the product info says this air-pencil grinder needs around 2.9 cfm @ 90 PSI, I like to run it from a DeWalt pancake compressor that is rated to deliver 2.6 cfm @ 90 PSI.  I can operate this air-pencil grinder at max “output” for about 10 minutes before the air pressure drops too low.  With the motor on the single-stage compressor running constantly, the air pressure is sufficient to operate this air-pencil grinder at max output continually.  I just wear ear-muffs to keep the constant loud noise from the compressor motor nearby from irritating and damaging my hearing.The reciprocating motion of the motor head is a forward-and backward oscillation in a slightly circular motion.  This means that depending on the contours of what you are trying to grind, it is best to experiment with flipping the grind-head, bit or file that you are using to determine which oscillation loci gives the least amount of chatter.  In other words, if you’re not getting smooth, grind action, just rotate the grinding head by 180 degrees.You don’t need to apply a lot of hand pressure.  Light, even strokes give the best results.  With flat-file heads, grinding metal at an angle is preferable to holding the grind head perpendicular to the surface being filed or ground.  Too much hand pressure on a jack-hammer trajectory causes chatter and can chip your flat-file heads.  When opening the diameter of thru-holes, I get the best, fastest results by holding both the hole and a round-file grinding head passing through it, vertically, and rotating the round-file head around the perimeter of the hole instead of pushing it back-and-forth along the bore axis of the hole.If you’re not getting the amount of material removal you desire, especially when grinding hard metals, the trick is not to increase the air-pressure from your compressor, but to lower the grit size of your grind heads to use more coarse abrasive.  Be careful, as once you drop below #120 diamond grit, even hardened steel can come off much faster than expected — and it is way easier to remove metal than to replace it!I use light oil for lubricating jack-knifes, such as Swiss Army Knives, to lubricate this air-pencil.  A few drops with a needle applicator into the [brass] air inlet nozzle at the rear of the air-pencil grinder before every use will keep things running smoothly.  I suspect a lot of tool breakages that are cited in the comments are because users are not lubricating their air-pencil grinders frequently enough, are turning up the air pressure from their compressors past 90 psi, and are forcing their grind-heads into their parts like they are drilling them.The adapter for round-shaft grind-heads is installed as the factory default.  A clamp adapter for holding flat-file heads is included, and is notched for smaller-diameter (e.g. less than 3 mm dia) round-file heads.  Do not try to install the clamp adapter in place of the default adapter — the clamp adapter has a round stem slides into the default adapter.  NOTE; when you are using the included hex wrench to tighten or loosen any of the adapters or tool holders, do not hold and torque against the body of the air-pencil grinder.  Hold the adapters themselves.  I suspect this is another cause for tool breakages, where users are using the body of the air-pencil grinder like a wrench handle.  Don’t do this!There are reviewers who have cited that the air-hose coupler included in the kit is not the U.S. standard interface.  The one that came with mine is compatible with and correct for all my U.S. standard air compressor equipment.The kit comes with a set of file head grinders in duplicate.  The redundancy is nice as the ultrasonic oscillations can wear off even diamond grit in a short time.  I use all variety of parallel round files with this air-pencil grinder after cutting their shanks (handles) to shorter lengths.  I even use the grinding bits for sharpening chainsaw links in this air-pencil grinder, and the ones with the more coarse grit will trim away even hard steel with surprising speed.For $58, this air-pencil grinder is a great value that does the job of equipment priced 10X greater.  At its very affordable price, I would just buy another one if this one breaks.  However, with the right maintenance and care, as described above, I suspect this air-pencil grinder will last a long time.I’m really impressed with this air-pencil grinder.  It’s been immensely useful to me right out of the box as a fine grinding tool.  Used properly, it does in minutes on hard steel what would take days for me to grind manually / by hand.  Remember that it is an air-pencil grinder and not an air-chisel or bench grinder and it will serve you well.

### ⭐⭐⭐⭐ 







  
  
    Doesn’t reciprocate hardly at all
  

*by M***A on Reviewed in the United States on 23 December 2022*

The air hose is cheap. The fittings are cheap the toilet self seems decently built, but reciprocates hardly at all enough to do anything with the files that are included you’ll be better off manually doing it. I was disappointed in its performance probably make a better vibrator.

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-02*