Bosch 1375A Review: An Angle Grinder Worth Getting?

Bosch 1375A Review

Handyman’s World is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to

Usually, ‘angle grinder’ and ‘lightweight’ don’t go together, especially if you’re seeking durability, but the Bosch 1375A 4-1/2-Inch Angle Grinder somehow disproves that. This portable, yet powerful, tool will get most jobs done for your DIY home improvement plan.

Let’s have a look at some of the features, specs, pros, and cons of this angle grinder from Bosch. After reading this review, you’ll be able to decide whether or not this tool is right for your projects.


Reviewed Product

Bosch 1375A 4-1/2-Inch Angle Grinder

A portable and powerful angle grinder from Bosch. This lightweight tool still packs pleanty of power with 11,000 RPM and its lock-on feature keeps you focused on your task.


What makes the Bosch 1375A unique from most Bosch angle grinders (and those of different brands) is its size and weight. Portable designs may appeal to those who are new to power tools or just want something to get tasks done without tiring out their arms.


As mentioned above, the tool is lightweight at only 3.75 pounds (usually, most angle grinders of the same wheel size capacity tend to be about four to five pounds). With a no-load speed of 11,000 RPM and using its 6-amp motor, this grinder has a spindle thread of 5/8 -11 UNC and accepts 4 1/2-inch wheels. It is also shorter than most angle grinders at only 10.5 inches long.


This tool is backed by a 1-year limited warranty from the date of purchase, which is sufficient for most people. As long as the tool hasn’t been tampered or abused by the operator, you can take it back to their service center to have it replaced if there’s a manufacturer’s defect. For added durability, the angle grinder also has epoxy-coated field windings, which reinforces its dust protection properties.

To help you maintain the tool properly, the angle grinder even has a patented Service MinderBrush System, which stops the tool automatically if something is wrong. This puts your motor and inner workings at less risk of worsening the defect of the tool and to let you know when it needs to be serviced.


When it comes to ease of use, this angle grinder has a lock-on side switch, which helps you to have a smooth-running job. You can also adjust the handle on either side of the tool depending on where you are comfortable. A burst protection guard also adds security when you’re using it for long hours.

Bosch 4-1/2-Inch Angle Grinder 1375A

Should You Buy the Bosch 1375A?

You might like the Bosch 1375A if you prefer to work with a lightweight yet powerful angle grinder with unlimited power (since it is corded, after all). Whether it’s pipe fitting, concrete, or fabrication shop work, the small size makes it easy to carry and store.

Those who are working for long hours and often get their arms sore due to the weight of their regular angle grinder might want to look into this one as an alternative.

Nonetheless, if you are still unsure about the decision, go through the below list of the pros and cons of the tool.

Pros of the Product

Let’s start with the positives.

It’s lightweight.

The tool is only 3.75 pounds so it’s not something to cause fatigue quickly. This would appeal for spending hours using an angle grinder on a shop or a worksite.

You can move the handle to either side.

Whether you prefer the handle to be on the left or right, it is possible with this tool. This accommodates left-handed people and is really convenient if you’re operating from awkward positions.

Bosch 1375A Handle

It has a lock-on feature.

This prevents accidental triggering and also keeps you focused on the task ahead. Other angle grinders that don’t have a lock-on feature can waste your valuable time and possibly even damage the motor due to the sudden start-stop mistakes.

The RPM is high for a small tool.

If you need a powerful angle grinder but don’t want a bulky tool to carry around, this may be perfect for you. With 11,000 RPM, it can be used for most medium-duty DIY home improvements and fabrication shop tasks.

Cons of the Product

On the other hand, while it has good points, the product has some minor drawbacks.

It is only single-speed.

While it has a high speed of 11,00 RPM for the majority of medium to heavy-duty tasks, keep in mind that it is only a single-speed angle grinder.

The guard can be a little tricky to work with.

Although you can move the guard and adjust it to your liking, taking it out can be a challenge at first, but it only takes some getting used to.

What Are the Alternatives?

DeWalt DWE4012 If you prefer to look at another Bosch tool but with a paddle switch for better handling then the Bosch GWS10-45P might be just for you. They are both 4 1/2-inch angle grinders and the speeds are quite similar (this one has 11,500 RPM so the difference is small). It also has higher power at 10 amps compared to the 6-amp motor of the Bosch 1375A.

The Black & Decker BDEG400 is also a 4 1/2-inch tool with a similar motor power (6.5 amps). However, the difference is that this one has a 3-position side handle instead of just two, which makes it more customizable. Like the Bosch 1375A, though, it also has a low profile design because of its narrow body.

Bearing a slightly higher motor power is the DeWalt DWE4012, which has 7.5 amps and a speed of 12,000 RPM. The guard is also easy to remove due to the one-touch mechanism, which saves time. However, the side handle also has two positions, just like with the Bosch 1375A.

Finally, make sure to also check our article about the best angle grinders on the market.


To wrap it up, the Bosch 1375A 4-1/2-Inch Angle Grinder is worth considering if you’re tired of feeling sluggish due to a heavyweight tool. It has a movable handle, a lock-on feature, and a high RPM even for a small angle grinder, which can be helpful for day-to-day tasks.

While it is a single-speed tool and the guard needs some redesign, these downsides are not all that significant. After all, it’s always convienent when a tool isn’t too difficult to carry around for hours of DIY or shop work.