{"product_id":"chicago-pneumatic-8941091200-air-angle-grinder-4-inch","title":"Chicago Pneumatic 8941091200 Air Angle Grinder 4 Inch","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO PNEUMATIC 8941091200 is a pneumatic angle grinder built for metalworking, fabrication, and surface preparation tasks in industrial and trade environments. It accepts a 4-inch grinding wheel and spins at up to 12,000 RPM, driven by a compressed air supply at 90 psi. Air consumption runs at 23.3 CFM through a 1\/4-inch NPT inlet, with exhaust directed out the front of the tool to keep debris away from the operator. The helical bevel gear design supports smooth power transfer, and the overall length of 9.3 inches gives technicians solid control during extended use. Licensed trades and industrial mechanics are the primary installers and operators.\u003c\/p\u003e\n\u003cp\u003eThis grinder is suited for grinding, deburring, and blending operations on metal in both shop and field settings. The ergonomic aluminum alloy side handle and trigger-lock feature reduce operator fatigue during continuous work. The keyless adjustable protective guard allows quick wheel-position changes without additional tools, making it practical in production environments where downtime matters. It is appropriate for use on fabrication benches, maintenance applications, and structural metalwork where a compact 4-inch pneumatic tool is the right fit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e4-inch wheel diameter at 12,000 RPM free speed\u003c\/li\u003e\n  \u003cli\u003eHelical bevel gear design for smooth, efficient power transfer\u003c\/li\u003e\n  \u003cli\u003eKeyless adjustable protective guard for fast wheel-position changes\u003c\/li\u003e\n  \u003cli\u003eErgonomic aluminum alloy side handle reduces operator fatigue\u003c\/li\u003e\n  \u003cli\u003eTrigger-lock for sustained grinding without constant grip pressure\u003c\/li\u003e\n  \u003cli\u003eFront exhaust directs air and debris away from the work surface and operator\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 4-inch grinding wheels and abrasive discs fitted to a 3\/8-24 spindle. Requires a compressed air supply capable of delivering at least 23.3 CFM at 90 psi through a 1\/4-inch NPT connection.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation should be performed by qualified personnel familiar with pneumatic tool safety. Before mounting or changing a wheel, disconnect the air supply completely and verify the line is depressurized. Ensure the air system is equipped with a filter-regulator-lubricator unit to protect internal components and maintain rated performance. Always confirm the abrasive wheel speed rating meets or exceeds the tool free speed before mounting, per applicable ANSI and OSHA abrasive wheel standards.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWheel Diameter\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFree Speed\u003c\/strong\u003e: 12,000 RPM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir Pressure\u003c\/strong\u003e: 90 psi (6.30 bar)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir Consumption\u003c\/strong\u003e: 23.3 CFM\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAir Inlet Size\u003c\/strong\u003e: 1\/4 inch NPT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpindle Size\u003c\/strong\u003e: 3\/8-24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExhaust Location\u003c\/strong\u003e: Front\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Type\u003c\/strong\u003e: Side\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHandle Material\u003c\/strong\u003e: Aluminum Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 9.3 inches (233 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrigger Lock\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.2 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: CHICAGO PNEUMATIC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 8941091200\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO PNEUMATIC","offers":[{"title":"Default Title","offer_id":51542129312050,"sku":"8941091200","price":485.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/eb90f12bf1f5ab8f34b82c2a260f2262.jpg?v=1785892980","url":"https:\/\/voomisupply.com\/products\/chicago-pneumatic-8941091200-air-angle-grinder-4-inch","provider":"Voomi Supply","version":"1.0","type":"link"}