Chicago Pneumatic CP9285 Heavy Duty Review
Verdict & Overview
For the professional who demands precision, the CP9285 is the benchmark. Chicago Pneumatic focuses on internal tolerances, making this the smoothest running drill in our lineup.
Performance Test
We tested for 'runout' (wobble) and found it to be near zero. This means a 1/4" bit drills exactly a 0.250" hole, not 0.255". This precision is critical for tapping and riveting in aerospace or high-end fabrication. The teasing throttle is a joy to use.
Build & Ergonomics
Balanced perfectly. The center of gravity is right at the trigger finger, making it feel lighter than it is. The rear exhaust includes a muffler to keep noise down.
Scenario: You are drilling out a broken bolt and need to center-drill precisely in the middle of the stud. The teasing throttle allows you to start slow and precise without skipping.
Pros
- + Zero runout for precision work
- + Excellent teasing throttle
- + Rear exhaust keeps work clean
- + Compact 3/8" capacity
Cons
- - Premium price point
- - Needs frequent oiling
Compare With Other Air Drills
Frequently Asked Questions
Q: Is it good for aircraft work?
A: Yes, excellent for aluminum skin work.
Q: What is a teasing throttle?
A: It allows very precise speed control at low RPM.