Astro Onyx 202 1/4-Inch Medium Air Die Grinder
The Astro Pneumatic Onyx 202 is a straight medium-body die grinder with a composite grip and rear exhaust. The 1/4-inch collet determines shank fit, while the listed 22,000 RPM free speed makes accessory speed compatibility a separate ordering check.
Specifications and included details
- 1/4-inch collet, 1/2 HP motor and 22,000 RPM free speed.
- 6-3/4-inch overall length and listed weight 1.4 lb.
- 1/4-inch NPT inlet, 3/8-inch hose inside diameter and 3 CFM average consumption.
- Safety lever, built-in regulator and rear exhaust.
Before ordering
Match accessory shank, speed rating and material suitability. Confirm operating pressure and full air demand in the model manual; the listing provides a broad 90–120 PSI range rather than an instruction to use its upper end. Accessories are not established as included.
Product questions and answers
Does any 1/4-inch shank accessory fit the intended operation?
Shank fit is only one requirement. Check accessory speed rating, cutting-head clearance and suitability for the material and work.
Does the safety lever mean protective equipment is unnecessary?
No. A safety lever is a tool control feature, not a substitute for appropriate protection or the operating instructions.
Is 3 CFM a sustained compressor requirement?
It is listed as average consumption. Confirm actual operating demand and delivered airflow for the work schedule before choosing the compressor.
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