Chicago

Chicago CP875 Grinder

Grinder
220 watts
Pneumatic
15.8 ounces

4.7/ 5 on Amazon1,016Amazon ratings200+bought last month4.3ProductDome score

Better rated than 66%
More reviewed than 84%

High confidenceLast refreshed Aug 4, 2026Amazon data + ProductDome analysis · methodology

Best forYou have a shop air compressor and need a compact high speed grinder for deburring and detail work

A light, fast spinning air die grinder suited to detail metalwork, provided you already run a shop air compressor.

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ProductDome scorecard

How it ranks among the 150 grinders we track

4.3/ 5ProductDome scoreHigh confidence

Owner satisfaction · 56% of scorecategory median 4.6★4.7

4.7★ across 1,016 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 256 ratings3.8

1,016 Amazon ratings, weighted on a log scale so huge counts don't drown everything.

Buyer demand · 11% of score3.1

200+ bought on Amazon last month.

Data quality · 11% of score3.8

Brand identity, imagery, description and spec coverage.

The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 150 grinders we track - how the scorecard works · full grinders data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

The Chicago CP875 is an air powered die grinder that spins up to 22,500 RPM with a 220 watt motor, weighing 15.84 ounces and measuring 4.88 inches long. Its small, light body suits detail grinding and deburring work.

High RPM pneumatic die grinders like this one are built for fast material removal on small bits rather than raw torque, so they excel at deburring welds, cleaning up castings and light shaping rather than heavy stock removal. Running on shop air means output depends on the compressor feeding it, not on a battery charge.

Air powered die grinder
22,500 RPM top speed
220 watt motor power
15.84 ounce weight, 4.88 inch length

Who it's for

Fits metalworkers, welders and hobbyists who need a compact tool for deburring, polishing and detail grinding on a workshop air line. Not useful to anyone without an air compressor, since it has no cordless or corded electric option.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

22,500 RPM for fast detail grinding
Light at 15.84 ounces for extended use
Compact 4.88 inch length reaches tight areas

What to check first

Requires a shop air compressor to run
Not intended for heavy stock removal

Performance notes

22,500 RPM is a high speed for a die grinder, favoring fast, controlled material removal with small mounted points and burrs over aggressive grinding. At under a pound and just under 5 inches long, it is easy to maneuver into tight spots.

Specifications

Brand	Chicago
Model	CP875
Motor Power	220 watts
Power Source	Pneumatic
Item Weight	15.8 ounces
Speed	22500 rpm

How it compares

This product against the closest alternatives we track in grinders.

Product	Amazon rating	Ratings	ProductDome score
Chicago CP875 GrinderThis product	4.7 / 5	1,016	4.3 / 5
DEWALT DCG413B GrinderDeWalt	4.8 / 5	9,600	4.6 / 5
Milwaukee 2880-20 GrinderMILWAUKEE	4.8 / 5	2,400	4.5 / 5
AVID MW590 GrinderAVID	4.5 / 5	6,100	4.4 / 5
Makita 9557PBX1 GrinderMAKITA	4.8 / 5	3,960	4.4 / 5

Frequently asked

Questions about the Chicago CP875

Common buyer questions answered straight from the product spec data - no fluff, no "it depends".

Does the Chicago CP875 need an air compressor?

Yes, it is air powered and requires a shop air line to run.

How fast does the CP875 spin?

Up to 22,500 RPM.

How much does the CP875 weigh?

15.84 ounces.