When grinding, deburring, and finishing work benefits from directional control, the AIRCAT 6290 1/4″ Reversible Straight Die Grinder gives technicians a high-output pneumatic tool for controlled material removal in automotive, manufacturing, shipbuilding, commercial, and maintenance environments. Its 0.75 HP motor and 20,000 RPM free speed support work with compatible mounted stones, carbide burrs, and properly rated rotary accessories. The 1/4″ collet size accepts matching 1/4″ shank accessories for edge cleanup, burr removal, gasket-surface preparation, casting cleanup, weld-detail blending, and general shop finishing.The 6290 adds a forward/reverse switch on top of the grip, allowing the operator to change spindle direction when the accessory and application support reversible operation. A speed control switch located under the trigger gives added control during blending, deburring, and cleanup work, while the Erickson-style precision collet supports secure accessory holding during high-speed use. At 1.40 lbs. and 7.00″ long, this rear-exhaust die grinder provides strong output in a manageable straight-body format, with AIRCAT listing low noise at 79 dBA and low vibration at 2.5 m/sec.Type: Reversible Straight Die Grinder | Model: 6290 | Motor: 0.75 HP | Free Speed: 20,000 RPM | Collet Size: 1/4″ | Gears: Direct Drive | Exhaust: Rear | Weight: 1.40 lbs. | Length: 7.00″ | Air Consumption: 4.1 CFM | Recommended Hose Size: 3/8″ | Air Inlet: 1/4″ NPT | Noise Level: 79 dBA | Vibration: 2.5 m/secFeatures:0.75 HP non-stall motor and 20,000 RPM free speed support grinding, deburring, edge cleanup, and finishing work.1/4″ collet accepts compatible 1/4″ shank mounted stones, carbide burrs, and rotary accessories when accessory speed ratings match the tool.Forward/reverse switch located on top of the grip allows easy directional changes when the accessory and application permit reverse rotation.Speed control switch located under the trigger gives the operator added control during surface blending, burr removal, and cleanup work.Erickson style precision collet supports secure accessory holding during high-speed operation.Over-mold composite handle and grip improve comfort during repeated material removal tasks.Low noise operation is listed at 79 dBA.Low vibration operation is listed at 2.5 m/sec.Rear exhaust directs air away from the immediate work point to help keep exhaust flow off the grinding area.Applications:Automotive repair: Cleaning edges, removing burrs, preparing gasket surfaces, and performing detail work around engine, brake, exhaust, and body components.Manufacturing and fabrication: Deburring machined parts, blending edges, cleaning drilled holes, and touching up metal features after cutting, drilling, or machining.Shipbuilding and marine repair: Supporting small-scale cleanup, edge conditioning, and detail grinding where straight-tool access and directional control are useful.Commercial maintenance: Finishing brackets, housings, guards, panels, fixtures, and repair parts during general service and maintenance work.MRO and equipment service: Removing burrs from mounts, brackets, access covers, and compact service components in shop and field maintenance environments.FAQs:Q: What is the AIRCAT 6290 best used for?A: The AIRCAT 6290 is best used for grinding, deburring, edge cleanup, surface preparation, and finishing work where a reversible straight die grinder provides useful control. Common uses include automotive repair, fabrication cleanup, manufacturing work, shipbuilding, equipment service, and MRO finishing.Q: What is the benefit of a reversible die grinder?A: A reversible die grinder allows the operator to change spindle direction when the accessory and application support reverse rotation. This can help with control, access, and work direction, but accessories must always be approved for the selected rotation direction.Q: What accessories can I use with this die grinder?A: Use compatible mounted stones, carbide burrs, and rotary accessories with the correct 1/4″ shank size and a speed rating suitable for 20,000 RPM operation. Always follow the accessory manufacturer’s safety, speed, and rotation-direction instructions.Q: What air hose size should I use with the AIRCAT 6290?A: AIRCAT lists a 3/8″ recommended hose size and a 1/4″ NPT air inlet for this model. Using clean, regulated air helps the grinder maintain proper speed, performance, and service life.Q: Should I disconnect the air supply before changing accessories?A: Yes. Disconnect the air supply and air hose before changing mounted stones, carbide burrs, collets, or other accessories. This helps prevent accidental starts while the tool is being adjusted.AVAILABLE VARIATIONS AND SPECIFICATIONS SKUFree Speed(RPM)Motor(HP)Collet /SpindleSize (in)GearsExhaustWeight(lbs.)Length(in)Air Cons.(CFM)Rec.Hose Size(in.)Air InletNPT(in.)629020,000.751/4Direct DriveRear1.407.004.13/81/4626020,0001.01/4Direct DriveRear1.209.256.03/81/4627020,0001.01/4Direct DriveRear3.1014.156.03/81/4 (function(){ var button=document.querySelector(‘.spec-accordion-toggle’); var panel=document.querySelector(‘.spec-accordion-panel’); var icon=document.querySelector(‘.spec-accordion-icon’); var manual=false; function setState(open){ panel.style.display=open?’block’:’none’; button.setAttribute(‘aria-expanded’,open?’true’:’false’); icon.textContent=open?’-‘:’+’; } function applyDefault(){ if(manual)return; setState(window.innerWidth>640); } button.addEventListener(‘click’,function(){ manual=true; setState(button.getAttribute(‘aria-expanded’)!==’true’); }); applyDefault(); window.addEventListener(‘resize’,applyDefault); })(); body{margin:0;padding:0;overflow-x:hidden;} .spec-accordion{width:100%;max-width:1100px;margin:1em auto;box-sizing:border-box;font-family:Verdana,Arial,sans-serif;} .spec-accordion *{box-sizing:border-box;} .spec-accordion-toggle{width:100%;display:grid;grid-template-columns:32px 1fr 32px;align-items:center;gap:8px;text-align:center;cursor:pointer;background:#444;color:#fff;border:0;padding:12px 16px;font-family:Verdana,Arial,sans-serif;font-size:16px;font-weight:700;text-transform:uppercase;letter-spacing:.02em;} .spec-accordion-title{grid-column:2;text-align:center;text-transform:uppercase;} .spec-accordion-icon{grid-column:3;text-align:right;font-size:20px;line-height:1;font-weight:700;} .spec-accordion-panel{border:1px solid #cfcfcf;border-top:0;padding:0;background:#fff;overflow:hidden;} .spec-table-wrapper{width:100%;max-width:1100px;margin:0 auto;overflow-x:hidden;} .spec-table{width:100%;max-width:1100px;min-width:0;margin:0 auto;border-collapse:collapse;table-layout:fixed;font-family:Verdana,Arial,sans-serif;font-size:12px;color:#111;} .spec-table th,.spec-table td{white-space:normal;overflow-wrap:anywhere;word-break:normal;border:1px solid #d3d3d3;padding:6px 8px;text-align:center;vertical-align:middle;line-height:1.25;} .spec-table thead th{background:#444;color:#fff;text-transform:uppercase;font-weight:700;} .spec-table tbody tr:nth-child(even):not(.group-row){background:#f7f7f7;} .spec-table tbody tr:not(.group-row):hover{background:#e5e5e5;} .spec-table tbody td{font-weight:600;} .spec-table th.identifier-header{background:#999;color:#fff;} .spec-table a,.spec-table a:visited{color:#0066cc;background:transparent;font-weight:700;text-decoration:none;padding:0;border-radius:0;} .spec-table a:hover,.spec-table a:active{color:#004f99;background:transparent;text-decoration:underline;}@media(max-width:640px){.spec-accordion{max-width:100%;margin:1em auto;padding:0 10px;}.spec-accordion-toggle{font-size:13px;padding:10px 12px;grid-template-columns:24px 1fr 24px;}.spec-table-wrapper{max-width:100%;overflow-x:hidden;}.spec-table{width:100%;max-width:100%;min-width:0;border:0;font-size:12px;table-layout:auto;}.spec-table thead{display:none;}.spec-table,.spec-table tbody,.spec-table tr,.spec-table td{display:block;width:100%;}.spec-table tbody tr:not(.group-row){margin:0 0 10px;border:1px solid #cfcfcf;background:#fff;}.spec-table td{border:0;border-bottom:1px solid #e2e2e2;padding:8px 10px;text-align:right;display:flex;justify-content:space-between;align-items:flex-start;gap:12px;white-space:normal;overflow:visible;overflow-wrap:anywhere;}.spec-table td:last-child{border-bottom:0;}.spec-table td::before{content:attr(data-label);font-weight:700;text-transform:uppercase;text-align:left;color:#444;flex:0 0 45%;}}Looking for more information about theAircat Pneumatic Straight Die Grinders?Click hereto view theCatalog.For help choosing the correct Aircat Pneumatic Tools, please call(800) 608-5210or [email protected]
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