Chicago

Chicago CP870 Sander

Sander
0.5 amps
Pneumatic
4.3 pounds

4.7/ 5 on Amazon268Amazon ratings3.8ProductDome score

Better rated than 75%

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

Best forYou already run shop air and want a compact, fast spinning sander

A high rating across 268 reviews points to a well regarded air sander, though the listing shows zero recent purchases, so check current stock and reviews before ordering.

As an Amazon Associate, ProductDome may earn a commission from qualifying purchases made through links on this page.

ProductDome scorecard

How it ranks among the 170 sanders we track

3.8/ 5ProductDome scoreMedium confidence

Owner satisfaction · 56% of scorecategory median 4.5★4.7

4.7★ across 268 Amazon ratings, Bayesian-smoothed toward the category average.

Evidence strength · 17% of scorecategory median 323 ratings3.0

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

Buyer demand · 11% of score0.0

Modest tracked demand 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 170 sanders we track - how the scorecard works · full sanders data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.

Overview

This Chicago CP870 runs on compressed air rather than a cord or battery, spinning up to 10000 RPM. It weighs 4.3 pounds with a 7.6 inch body, built for shop use where an air compressor is already on hand.

Pneumatic tools like this trade cord and battery dependence for a compressor line, which usually means a lighter head and less heat buildup during sustained runs than electric equivalents.

Compressed air powered
10000 RPM top speed
7.6 inch body length
4.3 pound weight

Who it's for

Fits a garage or shop that already has compressed air set up for sanding or finishing work. Not a fit if you only have wall power or battery tools on hand.

Strengths and trade-offs

Drawn from this product's published specifications.

What stands out

10000 RPM top speed
Compact 7.6 inch body
Strong 4.7 star rating

What to check first

Requires a compressed air source to operate
No recent purchases recorded

Performance notes

Running at 10000 RPM on compressed air, this sander is built for continuous material removal without the motor heat buildup that slows down corded electric sanders during long sessions.

Specifications

Brand	Chicago
Model	CP870
Amperage	0.5 amps
Power Source	Pneumatic
Item Weight	4.3 pounds
Voltage	2 volts
Speed	10000 rpm

How it compares

This product against the closest alternatives we track in sanders.

Product	Amazon rating	Ratings	ProductDome score
Chicago CP870 SanderThis product	4.7 / 5	268	3.8 / 5
DEWALT DCW210B SanderDeWalt	4.8 / 5	13,683	4.7 / 5
SKIL SR211601 SanderSkil	4.6 / 5	7,366	4.6 / 5
BLACK+DECKER BDERO100 SanderBLACK+DECKER	4.6 / 5	15,574	4.5 / 5
WEN 6307 SanderWEN	4.6 / 5	6,255	4.4 / 5

Frequently asked

Questions about the Chicago CP870

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

What powers the Chicago CP870 sander?

Compressed air. It needs a shop compressor to run.

How fast does the Chicago CP870 spin?

Up to 10000 RPM.

How much does the Chicago CP870 weigh?

4.3 pounds, with a 7.6 inch body length.