Ingersoll Rand 301B Review

Are you out there looking for a good grinder, an air driven one with a very powerful motor producing 0.25 HP at 21,000 rpm free speed?

If so then Ingersoll Rand 301B Air Angle Die Grinder is what you should consider. It is a durable grinder with durable ball bearing construction to improve balance, reduce vibration and give a longer life.

It has a proper casing made of aluminum to withstand tough operations, and it is small in size and with a lightweight design for easy operation and greater access to tight spots. It also has integral safety interlock throttle lever to prevent accidental start up.

The following features explain more about this grinder, and they will give you incite as to why this grinder is a must have machine in your workshop. These features include:

Durable ball bearing

Ingersoll Angle Die Grinder has durable ball bearings for longevity. These ball bearings are well lubricated and reduce vibration on the machine when using. It thus helps the operator not to have sores on their hands due to heavy vibration. The spiral gear together with the ball bearings provides smooth power transfer to the system.

Small Lightweight Design

When you have to work for long hours, you need a light machine so that you don’t get fatigued very fast. This will help you finish heavy workload within your timeline without getting tired.

The Ingersoll Rand 301B Air Angle Die Grinder is small in size, and it is made of light materials like aluminum casing for enhancement of easy operation. Its small size and angled head design allow greater access to tighter spots.Ingersoll Rand 301B review


Noise is a nuisance and can be harmful to your health. Ingersoll Rand 301B Air Angle Die Grinder has a silencer to enhance your safety during operation as it traps noise produced.

The grinder also has an integral safety lock throttle lever which prevents accidental startup of the machine. It also has a 360 degrees front exhaust to help keep work safe and directs air away from the user.

Powerful Effort

Ingersoll Rand 301B Air Angle Die Grinder is a very powerful machine. Its motor produces 0.25 horsepower at a speed of 20,000 revolutions per minute. You can imagine that kind of speed, about 330 cycles per second. This is very powerful and will make your work first enhancing your job efficiency.

Not that the air pressure which drives the motor should not be more than 90 psi from your air compressor. Otherwise, you will be wasting energy, and your machine will wear out easily since you will have surpassed the maximum allowable limit.

Strong Casing

A strong casing for a machine is necessary to withstand tough operations. This will prevent the machine from breakages and internal damages.

This grinder has a very strong aluminum for this case. It also has a compact design feature for easy storage; you don’t need to be worried about space in your workshop.

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  • Durable ball bearing
  • Strong aluminum casing
  • Easy to use
  • It is a general purpose machine
  • Safe in operation
  • Silent in operation


  • Does not come with a hose fittings
  • The protective lever switch is a bit stiff when you buy it, but can be lubricated to make it better

Frequently Asked Questions (FAQs)

Q: What is the purpose of the adjustable slots on the front part of the grinder?

A: The slots are used as the exhaust port. Note that this is where the silencers are attached to reduce noise during operation.

Q: How can I easily lubricate my grinder without wasting lubricant?

A: All you need to do to oil this grinder is to place a drop of air tool oil directly into the air intake connectors. However, it is good if you purchase a needle attachment for your grease gun and inject grease into the small circle fitting on the top left side of the tool.

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Final Verdict

Ingersoll Rand 301B Air Angle Die Grinder is an excellent tool, not the most heavy duty die grinder out there from Ingersoll Rand but for my small shop it is good.

My review is all about helping people, new or experienced who are looking for a good grinder to purchase.

I hope that this review gives you enough information to help you decide on the right one to buy. Note that I am not promoting this specific product, am just helping you gain enough knowledge about it because this is what I bought for my shop and I think it is a good one.

David Echols

David Echols is the Editor of He is an angle grinder enthusiast and love to share what he know about this field.

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