Your pictures shows a plastic connector between the motor and collet, how well do you think it handle the reciprocal motion?

It seems to be functioning quite well and I have put several hours on mine

What is the stroke length? How many strokes per minute minimum and maximum?

This is ultrasonic and not profiler

Is there any warranty?

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

What kind of air coupler is used in this item?

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.

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Turbine Reciprocating Pneumatic Ultrasound Grinder

Turbine Reciprocating Pneumatic Ultrasound Grinder

Product ID: 141362816

Details

Brand
SI FANG
Color
Blue
Material
Metal
Power Source
Air Powered
Style
Portable

💨90 PSI air pressure

🔇Low noise & vibration

⚙️28,000 RPM max speed

459.78 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Elevate your craft with precision power that works as hard as you do!

OIL FREE CONVENIENCE - No lubricating oil needed—maintenance simplified for busy pros
PRECISION POWERHOUSE - Turbocharged 28,000 RPM for flawless mold and jewelry finishing
COMPACT COMFORTABLE - Lightweight 0.59 kg design fits perfectly in your hand for extended use
EFFORTLESS EFFICIENCY - Achieve mirror-polished surfaces with half the effort—manual work, upgraded
WHISPER QUIET OPERATION - Low noise and vibration keep your workspace professional and focused

The SI FANG Turbine Reciprocating Pneumatic Pencil Grinder delivers up to 28,000 RPM with 90 PSI air pressure, enabling rapid surface roughness reduction and mirror polishing for molds and jewelry. Its compact, lightweight design minimizes vibration and noise, while requiring no lubricating oil, making it an efficient, professional-grade tool for precision grinding, filing, and polishing.

Specifications

ASIN	B07SJZKVX2
Best Sellers Rank	#175,165 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #49 in Power Die Grinders
Brand Name	SI FANG
Color	Blue
Customer Reviews	4.2 4.2 out of 5 stars (61)
Item Weight	0.59 kg
Manufacturer	SHUQIU
Material Type	Metal
Maximum Rotational Speed	28000 rpm
Model Number	0c87c32d-ba14-47a3-bb38-e35c90594921
Number of Items	1
Power Source	Air Powered
Style Name	Portable
Unit Count	1 Count

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