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Alpha AIR-850 Central Water-Feed Pneumatic Polisher 5500 RPM

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  • High-Performance, Pneumatic Polisher
  • Central Water-Feed System Delivers Ample Water Regardless of Position
  • No-Load RPM 5,500
  • Lightweight and Ergonomically Designed for Better Maneuverability
  • New Splash Guard Allows For Better Visibility Without Being Splashed
  • Silicon Gear Head Cover Provides Cushion and Keeps Hands Warm
  • Enhanced Spindle Shaft for Easy Tool Removal
430.50 430.50
430.50

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  • Package Dimensions
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Alpha AIR-850

The Alpha® Air polisher has long set the industry standard with its pioneering center water feed design, transforming how stone fabricators polish the edges of hard surfaces. Over the years, competitors have tried to mimic the design, a testament to the high standards Alpha® sets.

We’re excited to introduce the latest in our lineup: the AIR-830 and AIR-850 Pneumatic Polishers. These new models are designed to make the polishing operation easier than ever, with two different maximum RPM options to cater to all fabricators looking to achieve the best possible polish and enhance their productivity and efficiency.

Key Features and Enhancements:

  • Enhanced Motor: Equipped with a newly developed motor featuring a 5 Hybrid composite vane design, delivering more power and extended durability.
  • Improved Visibility and Safety: Includes a new splash guard that blocks splashes while improving visibility, alongside a redesigned end case that enhances water and air control operations and minimizes breakage risk.
  • Added Comfort and Convenience: Features a silicon boot for the gear head and a water quick coupler with a shut-off valve for ease of use.
  • Robust Design: Comes with an enhanced spindle shaft and full-size wrenches for easy tool removal, ensuring robust operation and maintenance.
  • Durable Hoses: Includes all-weather air and water hoses that are 15 feet long and rated for extreme temperatures from -40°F to +140°F.
  • Speed Variations: The AIR-830 offers a maximum no-load RPM of 4,000, while the AIR-850 goes up to 5,500, allowing for flexibility based on user needs.

Introducing the Alpha® AIR-300, designed for unique applications that are difficult to accomplish using conventional polishers. A smaller version of the well-known Alpha® AIR-658, the AIR-300 is ergonomically designed to fit comfortably in your hand and only weighs 1.6 pounds reducing fatigue from long hours of polishing. The smaller design is easy to maneuver and produces flawless sink rims and bowls. The Alpha® AIR-300 accepts 3” and 4” discs along with 2”, 3” and 4” rubber pads. It requires a 3HP compressor with air consumption of 10 CFM and air pressure between 85–95 PSI. The Alpha® AIR-300 Polisher easily converts from in-shop to on-site; a must have for all fabricators!

Features

  • High-Performance, Pneumatic Polishing Tool with A Central Water-Feed System
  • No-Load 5,800 RPMs
  • Lightweight and Ergonomically Design Reduces Fatigue
  • Designed To Easily Maneuver in Small Areas Like Sink Rims and Bowls
  • Consumes 10 CFM and Requires 87 PSI
  • Only Requires 3 HP Compressor
  • Great in The Shop or At The Jobsite
  • One Year Tool Warranty*
Specification Data
Model AIR-300 / AIR-304
Air Pressure 87 PSI (0.6Mpa (6 bar))
Air Consumption 10 CFM (280L/Min)
No Load Speed 5,800 RPM
Weight 1.6 lbs (0.731 kgs)
Air Inlet 1/4” BSPT
Water Inlet 1/4” BSPP
Spindle 5/8”-11 / M14-2
Item Quantity
Air Hose (10ft / 3m) 1
Water Hose (10ft / 3m) 1
Faucet/Garden Hose Adapter 1
Wrench (17mm) 1
Rust Inhibitor Oil (1oz / 30cc) (Replace with: AIR-008) 1
Part No. Maximum RPM Recommended For Threads Description
AIR-300 5,800 Wet Polishing 5/8"-11 Mini Pneumatic Polisher
AIR-304 5,800 Wet Polishing M14-2 Mini Pneumatic Polisher
AIR-008 Pneumatic Tools Rust Inhibitor Oil 8oz (237ml)

SinkBowlPolishing

Question :

What applications is the Alpha® AIR-300 recommended for?

Answer :

The Alpha® AIR-300 is recommended for wet sanding and polishing only. For wet core drilling, profiling and grinding applications, we recommend AIR-680 that offers more torque.

Question :

What is the warranty for this AIR-300?

Answer :

Alpha® warrants the AIR-300 against defects in material and workmanship for a period of 90 days from the date of original retail purchase (proof of purchase is required for all warranty repairs). Customers are asked to send in the warranty cards, however, we still need proof of purchase for warranty repairs. Our obligation assumed under this warranty is limited to the repair or replacement of parts without charge of problems caused by defects in material and/or workmanship. The warranty does not apply to tool accessories. The warranty for repairs is 30 days on the parts and labor that were repaired.

Question :

Does the AIR-300 have a maintenance program?

Answer :

Alpha® recommends greasing the tool housing periodically to keep your tool running. Failure to perform greasing, may reduce the life of the gears. Jiffy Lubber (Part No. 300047) and Grease (Part No. 300048) are available on our website www.alpha-tools.com.

Question :

How can I get the parts list and schematic for the AIR-300?

Answer :

There are several ways to obtain information such as this from Alpha®. It is available on our website www.alpha-tools.com and you can purchase Alpha® genuine parts from the same web site. You can also contact our customer service or tool repair departments at 800-648-7229.

Question :

If my AIR-300 breaks down, whom should I contact for repair?

Answer :

Please contact Alpha® for information or send tool to your nearest repair center. For warranty repairs, please include a copy if the sales receipt. Visit our website for a list of repair centers.

Question :

What size air nipples are recommended for use on the AIR-300?

Answer :

The thread on the endcase for the air on the AIR-300 is metric or 1/4” BSPP; this is a parallel pipe thread that seals on the flat seat of the fitting.

Question :

What shall I do if my AIR-300 breaks down and I need to complete the job immediately?

Answer :

This largely depends upon the time frame involved. Alpha® is the only warranty repair service center for tools still under warranty. Tools sent in for warranty repair with a copy of the sales receipt; receive priority same day or next day repair service. Tools sent in that are out of warranty will be estimated and a quote will be sent. Upon approval, repairs usual ship 7 to 10 days after approval. A $30.00 estimate fee per tool for non-warranty tools will be applied. If the tool is repaired, the $30.00 estimate fee will be applied toward the labor charge. Any parts used in the repair will be an additional charge. Please contact our tool repair department for alternative solutions.

Question :

Can I use motor oil to lubricate the AIR-300? How about WD40?

Answer :

No. You can not use motor oil for lubrication. The AIR-300 requires special lightweight pneumatic oil for maintenance. These types of lubricants can cause the vanes to stick in the rotor. We recommend Alpha® Lubrication Oil for Pneumatic Tools (Part No. AIR-008). You can purchase genuine Alpha® parts from our website www.alpha-tools.com.

Question :

Can I use my AIR-300 for dry polishing applications?

Answer :

Yes. The AIR-300 can be used for dry polishing applications. Use only dry polishing abrasives such as Ceramica DRY, PVA Quick Change, Sandpaper or other dry polishing pads that can be used under 4,000 loaded RPM.

Question :

What is the largest diameter accessory that the AIR-300 will accept?

Answer :

The AIR-300 will accept accessories up to 4". Do not attempt to use accessories larger than 4" for safety reasons. In addition, large accessories require more torque than the AIR-300 can provide. Operating the AIR-300 under these conditions will result in an overheating failure.

Question :

Can I use the AIR-300 for drilling applications such as faucet holes?

Answer :

No. We recommend that you use AIR-680 with C-Handle attachment that is available as an optional part and a template in order to use Alpha® Core Bits to drill faucet mounting holes.

Question :

Can I use an automatic oil feeder in the air supply line?

Answer :

No. The volume, grade, and composition of oil used may cause premature failure. The AIR-300 does not require much oil so a few drops a day at the end of operations should be enough for maintenance. We recommend inserting 2 -3 drops of Pneumatic Oil in the air line and running the AIR-300 for about 1minute on a daily basis at the end of your work shift.

Question :

How much horsepower should my compressor have to operate one air polisher?

Answer :

The airflow needs to run at 10 CFM in order to run one air polisher. Therefore, you will need a minimum of 3HP per tool efficiently operate the AIR-300. A 3HP compressor is highly recommended as the minimum requirement for one AIR-300. If a second polisher is added or planned for future growth, the air flow requirement increases 10 CFM per tool and the horsepower increases 3HP per tool.

Question :

Can I use my AIR-300 as a wet cutting tool with a diamond blade?

Answer :

No. The AIR-300 has only 5,800 rpm at no load. This is not enough rpm for diamond blade cutting applications. It is also unsafe to use as a cutting tool. Do not attempt to cut with the AIR-300. Operating the tool at a pressure that exceeds the recommended operating specifications (85-90 PSI) may result in premature failure of the tool.

Question :

What is the RPM of the Alpha® AIR-300?

Answer :

The Alpha® AIR-300 has a no load RPM of 5,800, the RPM of a pneumatic tool will drop to the optimum polishing speed of 3,500 to 4,500 RPM under load. Do not attempt to increase RPM by increasing PSI due the operating the tool at a pressure that exceeds the recommended operating specifications (85-90 PSI) as this may result in premature failure of the tool.

Question :

How many gallons of water does the Alpha® AIR-300 use per minute?

Answer :

The AIR-300 uses 0.5 gallons of water per minute if the needle valve is fully opened.

PartNo Weight (Packaged) UPS Code Package Dimensions Commodity Code Country Of Origin
AIR-300 3.60 749173430053 10in x 8.5in x 5.25in 8467.11.5090 Japan
AIR-304 3.60 749173430152 10in x 8.5in x 5.25in 8467.11.5090 Japan
AIR-008 0.54 749173430022 7in x 2.5in x 2.5in 2710.19.4000 USA

Specifications

Brand Alpha
Package Dimensions 13.5" x 11.5" x 3.5"