6 Best Air Die Grinders of 2020

Last update: Dec 5, 2020

An Air Die Grinder, or also known as Pneumatic Die Grinder, is a small, one-handed power compressed air tool that has a rotating spindle and a collet holds the die grinder bits with high-speed rotation. The Air Die Grinders are the best option for smoothing rough surfaces of a work piece. When connected with the right bit, Air die grinders can do many different tasks, mainly used for polishing, sharpening, cutting or grinding various materials, even with the sensitive materials like plastic, wood, crystal, …

Moreover, Air die grinders are popular with families, factories and workshops, so they tend to be inexpensive. So, if you are on a budget and wanna own an air compressor, here are your recommendations – The best Air Die Grinder!

Here are the best air die grinders you can buy in 2020:

  • Best Overall: Ingersoll Rand 301B Air Angle Die Grinder
  • Runner-up: Chicago Pneumatic CP860 Die Grinder
  • Best Value: Ingersoll Rand 3107G Air Die Grinder
  • Premium Choice: Astro Pneumatic Tool 219 ONYX 3pc Die Grinder Kit
  • Best for Home Use: PROSHI 1/4-Inch Angle Air Die Grinder
  • Most Powerful: Chicago Pneumatic CP876 Die Grinder
6 Best Air Die Grinders
Best Overall
Ingersoll Rand 301B Air Angle Die Grinder
    Runner-up
    Chicago Pneumatic CP860 Die Grinder
      Best Value
      Ingersoll Rand 3107G Air Die Grinder
        Premium Choice
        Astro Pneumatic Tool 219 ONYX 3pc Die Grinder Kit
          Best for Home Use
          PROSHI 1/4-Inch Angle Air Die Grinder
            Most Powerful
            Chicago Pneumatic CP876 Die Grinder

              Best Overall: Ingersoll Rand 301B Air Angle Die Grinder

              Ingersoll Rand 301B Air Angle Die Grinder
              Ingersoll Rand 301B Air Angle Die Grinder
              Pros
              • Strong Aluminum housing
              • Safety-lock throttle lever
              • High speed
              • Small and Lightweight design
              • Easy to access small spots
              Cons
              • The exhaust is forward facing
              • Maybe its size is too small for the big hand

              301B Air Angle Die Grinder is one of the best-in-class quality products of Ingersoll Rand company. And of course, 301B don’t let buyers down with their power.

              According to the purpose of Ingersoll Rand company “long lasting, economical, general purpose grinders”, the 301B delivers many of beneficial features in one product. Right angle configuration provides easy access to tight spots, so you can grind, break sharp edges, de-burr, port, and polish virtually anywhere! 301B also perfect for large polishing projects, don’t worry if you work in the big workshop or garages.

              Moreover, with its strong aluminum covering outside, 301B can withstand tough operating conditions, and its durable ball-bearing construction improves balance, reduces vibration, and ensures a longer life. The small, lightweight design provides easy operation, and greater access to tight spots, while an integral safety-lock throttle lever prevents accidental start-up. It also features a front exhaust to help you keep work surfaces clean.

              Beneath the housing of 301B, it has a very strong 0.25 HP motor that delivers a free speed of 21,000 RPM. Powerful machined-steel gears give it the durability and the precision that your tasks demand.

              Ingersoll Rand 301B Air Angle Die Grinder Specifications
              Verdict

              Lightweight but versatile.

              Runner-up: Chicago Pneumatic CP860 Die Grinder

              Chicago Pneumatic CP860 Die Grinder
              Chicago Pneumatic CP860 Die Grinder
              Pros
              • Productivity and control tool speed
              • Excellent for heavy duties
              • Lock-off throttle lever
              • Built-in regulator matches speed to the job
              Cons
              • Get hot when using for a long time
              • The exhaust placement is odd

              CP860 Heavy Duty Air Die Grinder is an extremely air-efficient in the range of Air Die Ginder market.

              With general maintenance application die grinder, productivity and control. Excellent for cleaning tires, moldings, porting, relieving engines, and general high-speed polishing and grinding. Built-in regulator matches the speed to the job. The rugged, energy efficient 0.54 HP motor delivers a free speed of 24,000 RPM. This die grinder features a rear exhaust to direct air away from work, an adjustable power regulator for precise control. CP860 also equips with a lock-off throttle to prevent accidental startups, and a square handle design for greater comfort. It measures 5-3/4 inches long and comes complete with a 1/4-inch and 6-millimeter collet.

              The Chicago Pneumatic CP860 Die Grinder offers excellent material removal rates combined with a heavy duty, all metal housing for maximum durability.

              While initially launched as a "maintenance duty" or "vehicle service" type tool, the CP860 has also proved to be a reliable performer in harsh environments such as casting plants and shipyards.

              Chicago Pneumatic CP860 Die Grinder Specifications
              Verdict

              If you want to find extremely power Air Die Grinder for doing heavy job, CP860 is the best tool for you.

              Best Value: Ingersoll Rand 3107G Air Die Grinder

              Ingersoll Rand 3107G Air Die Grinder
              Ingersoll Rand 3107G Air Die Grinder
              Pros
              • Strong and power ball-bearing
              • Lightweight
              • Ergonomic grip easy for torque accuracy
              • Self-locking throttle
              • Bang for the buck
              Cons
              • Get hot when using for a long time
              • The exhaust placement is odd

              Our best value Air Die Grinder belong to Ingersoll Rand company - the model 3107G. Cut, grind, polish, or tackle other tough jobs with the Ingersoll Rand 3107G heavy-duty air die grinder is the good choice.

              Part of Ingersoll Rand's Edge series, this handheld power tool sports a ball-bearing construction that's sturdy yet lightweight. Features include a 1/3-horsepower motor, a 1/4-inch collet, a rear exhaust, and a self-locking throttle.

              The 3107G features an “Award-winning ergonomic design” that delivers exceptional torque accuracy and comfortable to hold or use. Increasing productivity and safety for the owner. The tool's contoured grip offers greater comfort while you're working. This product measures 6.6 inches long and weighs 1.75 pound.

              Ingersoll Rand 3107G Air Die Grinder Specifications
              Verdict

              Suitable for heavy duties and long lasting

              Premium Choice: Astro Pneumatic Tool 219 ONYX 3pc Die Grinder Kit

              Astro Pneumatic Tool 219 ONYX 3pc Die Grinder Kit
              Astro Pneumatic Tool 219 ONYX 3pc Die Grinder Kit
              Pros
              • Good Quality
              • Multiple choice for bits
              • Compact and lightweight
              • Rear exhaust
              Cons
              • Expensive

              Standing in The Premium Choice, we can’t miss Astro Pnuematic's 219 ONYX 3pc Die Grinder Kit includes the 1/4-Inch 90-Degree Angle Die Grinder, 1/4-Inch Mini Die Grinder and an 8pc.

              Double Cut Carbide Rotary Burr Set. Features of this set includes a lever throttle for feathering control, a rib textured handle which provides a firm grip and a rear exhaust air flow system that directs air away from work surface. That gives you twice the flexibility and a sturdy little set that does not vibrate as much, is silent and allows you to control the throttle at the touch of a finger.

              Additionally, the increased motor size provides more power to make completion of work that much easier.

              Astro Pneumatic Tool 219 ONYX 3pc Die Grinder Kit w/ 90° Die Grinder, Die Grinder & 8pc Double Cut Carbide Rotary Burr Set will include:

              • SA-5: Cylindrical shape 1/2" X 1"
              • SA-3: Cylindrical shape 3/8" X 3/4"
              • SC-3: Cylindrical radius end 3/8" X 3/4"
              • SC-1: Cylindrical radius end 1/4" X 5/8"
              • SD-1: Ball shape 1/4"
              • SD-3: Ball shape 3/8"
              • SF-3: Tree shaped radius end 3/8" X 3/4"
              • SF-5: Tree shaped radius end 1/2" X 1"
              Astro Pneumatic Tool 219 ONYX 3pc Die Grinder Kit Specifications
              Verdict

              Well worth the money

              Best for Home Use: PROSHI 1/4-Inch Angle Air Die Grinder

              PROSHI 1/4-Inch Angle Air Die Grinder
              PROSHI 1/4-Inch Angle Air Die Grinder
              Pros
              • Flexible with the 90-degree head
              • Lightweight aluminum body
              • Can control the tool speed
              • Full set of accessories
              Cons
              • Take time to catch up the compressor

              Last but not the least, PROSHI 1/4-Inch Angle Air Die Grinder will be our bright candidate in the best for home use. With the reasonable price, convenience to use, PROSHI brings the best quality tools in the range of budget price.

              More than that, the 1/4-inches angle air die grinder show us many impressive features: The 90-degree head allows flexibility in many applications, for reaching tight or angled grinding, easily to access to small spots. Variable-speed throttle ramps up to maximum RPM, built-in air regulator for precise speed control.

              Besides, PROSHI 1/4-Inch Angle Air Die Grinder has s lightweight aluminum body, rear exhaust to keep the clear area, durable ball-bearing motor. Suitable for precision machining, smoothing, chamfering, deburring, grinding, polishing, engraving and various kind of jobs. Stepless speed control knob switch: according to different purposes, choose different speeds to meet different needs. Industrial grade 1/4" collet: high concentricity, small yaw, low vibration, high wear resistance, no heat, stable operation.

              PROSHI 1/4-Inch Angle Air Die Grinder Specifications
              Verdict

              With the budget price, PROSHI 1/4-Inch Angle Air Die Grinder consider the same quality as popular Brand.

              Most Powerful: Chicago Pneumatic CP876 Die Grinder

              Chicago Pneumatic CP876 Die Grinder
              Chicago Pneumatic CP876 Die Grinder
              Pros
              • Lightweight, compact, easy to handle
              Cons
              • Just for small works

              CP876 Mini Die Grinder is a perfect tool for tight spaces but under heavy industrial use. Moreover, with the impressive high free speed 30.000, CP876 can satisfy with the tool power.

              General maintenance applications, Compact and lightweight tool designed for easy maneuverability, Ideal for limited space applications. Lightweight design for easy maneuverability. Excellent for high speed blending, smoothing, porting and deburring in confined areas.

              Chicago Pneumatic CP876 Die Grinder Specifications
              Verdict

              Small but packed with a punch.

              How To Choose The Best Air Die Grinder?

              At the first-time buying Air Die Grinder, the buyers can be overwhelmed at the variety of shapes, sizes, air capacities and configurations that these tools are available. And it is not easy to decide which one is good and which one is poor quality? To analyze the specification of the machine, we need to understand about the metric in technology.

              Pneumatic tools are rated using several metrics: Free Speed (RPM), Air Pressure (psi/bar), Air Consumption (cfm/scfm or m3/min), Horsepower (hp), and spindle size. Each individual tool has its own specific requirements which determine their compatibility with air compressor systems.

              Here are some factors the buyer can refer.

              1. Durability:

              With the cheap die grinders in the market, they usually have plastic bodies that easily corrosion every time use it. That is the reason why many buyers ready to pay the extra buck and go for die grinders with aluminum casings. They last longer and avoid the corrosion better.

              2. Convenience to use

              The grinder you choose should be easy to use according to your standards. To know it, you should check clearly about the product information like its weight, height (make sure it fit with your hand and you can hold it easily and correctly), its power source (electric or pneumatic one),…

              3. Revolutions Per Minute (RPM):

              RPM is a measure of the frequency of a rotation. It states the number of full rotations completed in one minute around a fixed axis. It is used as a measure of rotational speed of a mechanical component. In other words it is how many times something rotates every minute. It is used as a measure of how fast a mechanism is turning. So if a motor is turning at 100 rpm it means that for every minute the motor is running it makes 100 complete turns.

              4. Compressor/Tank Size:

              An air compressor and air hammer perform professional work, maintenance, and repair tasks easier and faster. Compressor tank size, motor horsepower (hp), air volume output (CFM), and air pressure (psi) must be sufficient to operate the air hammer. The volume of air the compressor can produce (CFM) and the air pressure contained in the tank (psi) are the most important considerations. These specifications are typically marked on the tank’s label. Each air impact hammer requires a minimal CFM (cubic feet per minute) at a prescribed psi (pounds per square inch) to properly operate at full efficiency.

              Which Brands Make The Best Air Die Grinder?

              Ingersoll Rand: Steady producing quality products since 1871, Ingersoll Rand is a top player in the manufacturing industry. The Irish-American company deals in air solutions, tools, material handling and so on. Ingersoll Rand air hammers are designed with maximum efficiency in mind - ensuring that the tool does the work, not you. They will deliver the punch you need to get the job done fast and comfortably, including exhaust and front-end jobs, general bolt cutting, pin driving and body shearing work.

              Chicago Pneumatic: Chicago Pneumatic is a brand name in the pneumatic tool industry which has a history traced back to 1889. Since decades, Chicago Pneumatic has a heart for the general industry and matches your highest demands with the right solutions. While our history and general product offer provides you with a general background of our brand, the principles and technologies section will familiarize you with the practical side of our products. This gives you the right know-how and confidence to take your business to the next level. It is simple, really. You have work to do, customers to serve. Chicago Pneumatic is there to help you get the job done, without compromise.

              Astro Tool Corporation: Astro Tool Corporation is a 60-year old U.S. manufacturer of high-precision tooling for electrical connector service and wire assembly. We have been on the MilSpec QPL since its inception in 1969 and provide tooling meeting the stringent M22520 and M81969 requirements for Mil-spec connectors and contacts. Astro Tool is proud to engineer and manufacture its products in the USA. From our manufacturing facility located just outside of Portland, Oregon, our tools go from concept, to design, to build all in one facility. We are proud to be a successful manufacturing company that has continued to build our products within the USA, guaranteeing the best quality tools for your trade.

              PROSHI: PROSHI as a professional manufactory & exporter of air tools, power tools, and hand tools, automotive tools products, has been designing, producing and selling high-quality Industrial / professional / DIY class air tools. Power tools, hand tools, automotive tools products to worldwide customers. Our customers mainly come from South America, North America, and Europe Markets. After more years' development, we have now developed from a traditional products company to a high-tech enterprise which covers all ranges of tools related products. At present, our products include the whole series of air tools, power tools, and hand tools, automotive tools products. We have our own registered trademark, selling our own brand products, but we also welcome OEM and ODM orders. Orders for new product developing are also acceptable. Based on product attributes, we afford parts or whole developing costs.

              Conclusion

              Air Die Grinder, also known as Pneumatic Die Grinder, is the perfect one-handed power compressed air tool for polishing, sharpening, cutting or grinding various materials. One Air Die Grinder can offer a versatile functioning system. It makes human life easier and becomes the great assistant for the job. It will be a miss if you don’t own one Air Die Grinder!


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