{"product_id":"pneumatic-die-grinder-air-carving-pen-2-38-3-0mm-70000rpm","title":"Pneumatic Die Grinder Air Carving Pen 2.38–3.0mm 70,000 RPM","description":"\n\u003ch2\u003eCocostar JQS-270A Pneumatic Die Grinder \u0026amp; Air Carving Pen\u003c\/h2\u003e\n\u003cp\u003eTake your engraving, carving, and precision grinding work to the next level with the \u003cstrong\u003eCocostar JQS-270A Pneumatic Die Grinder\u003c\/strong\u003e. Engineered for commercial manufacturing and fine craft work alike, this compact air-powered carving pen delivers an impressive \u003cstrong\u003e70,000 RPM no-load speed\u003c\/strong\u003e and accepts \u003cstrong\u003e2.38–3.0 mm collets\u003c\/strong\u003e — making it a versatile workhorse for deburring, polishing, routing, and intricate engraving tasks.\u003c\/p\u003e\n\n\u003cp\u003eMade in Mainland China.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-High Speed:\u003c\/strong\u003e 70,000 RPM no-load speed for fast, efficient material removal and smooth finishing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShort Collet Seat Design:\u003c\/strong\u003e The redesigned short collet seat minimizes deflection and maintains excellent concentricity — even after extended, heavy-duty use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrecision Fine-Tuning Switch:\u003c\/strong\u003e Copper air intake shaft construction delivers effective noise reduction, increased exhaust volume, and improved torque output.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eImported Japanese Bearings:\u003c\/strong\u003e Long-life bearings rated for sustained 70,000 RPM operation extend the tool's service life and increase grinding speed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExceptional Concentricity:\u003c\/strong\u003e Rotary concentricity of 0.01–0.03 mm\/m keeps vibration minimal, doubling grinding rod durability and leaving workpieces with a smoother finish.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGenerous Air Hose:\u003c\/strong\u003e Includes a 1.6 m air hose for comfortable reach and maneuverability at your workstation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Ergonomic:\u003c\/strong\u003e Slim pen-style body (145 × 15.5 mm) fits naturally in hand for precise, fatigue-free control during detailed work.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"border-collapse:collapse;width:100%\"\u003e\n  \u003ctr style=\"background:#f5f5f5\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eJQS-270A\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eNo-Load Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e70,000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCollet Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e2.38–3.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eAir Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e0.03 m³\/min\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eAir Hose Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1.6 m\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eBody Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e145 × 15.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOrigin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eUser Care \u0026amp; Maintenance\u003c\/h3\u003e\n\u003col\u003e\n  \u003cli\u003eBefore first use, add special pneumatic tool oil through the air hose.\u003c\/li\u003e\n  \u003cli\u003eLubrication is essential — keep the tool properly oiled at all times.\u003c\/li\u003e\n  \u003cli\u003eDrain moisture from your air compressor regularly to prevent water damage.\u003c\/li\u003e\n  \u003cli\u003eAfter each use, add 5–8 mL of pneumatic tool oil and run the tool at idle for approximately 30 seconds.\u003c\/li\u003e\n  \u003cli\u003eAvoid running the air compressor motor without a load for extended periods.\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Pneumatic tool oil cannot be shipped by air due to transport safety regulations. Oil must be sourced separately.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWarranty \u0026amp; Guarantee\u003c\/h3\u003e\n\u003cp\u003eBacked by a \u003cstrong\u003e3-month warranty\u003c\/strong\u003e and a \u003cstrong\u003e7-day exchange policy\u003c\/strong\u003e (from delivery date) for total peace of mind.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/leather-hole-punch-tool-diy-stitching-punch-4-5-6mm\"\u003eLeather Hole Punch Tool | DIY Stitching Punch 4\/5\/6mm\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/uv-shaped-leather-groover-skiving-tool-kit-4-piece-diy\"\u003eU \u0026amp; V Leather Groover Skiving Tool Kit – 4-Piece Stainless Set\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/stainless-steel-ceramic-trimming-tool-curved-skip-knife\"\u003eStainless Steel Ceramic Trimming Tool – Curved Skip Knife\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/personal-protective-equipment\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on personal protective equipment\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What collet sizes does the JQS-270A pneumatic die grinder accept?\u003c\/h4\u003e\n\u003cp\u003eA: The JQS-270A accepts collets in the \u003cstrong\u003e2.38–3.0 mm range\u003c\/strong\u003e, making it compatible with a wide variety of standard engraving bits, grinding rods, and carving accessories.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Does this air carving pen require an air compressor?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. As a pneumatic tool, the JQS-270A requires a compatible \u003cstrong\u003eair compressor\u003c\/strong\u003e to operate. The included 1.6 m air hose connects directly to your compressor's air line. Ensure your compressor provides adequate pressure for optimal performance.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How do I maintain this pneumatic die grinder for long-term use?\u003c\/h4\u003e\n\u003cp\u003eA: Regular lubrication is key. Before first use and after every session, add \u003cstrong\u003e5–8 mL of pneumatic tool oil\u003c\/strong\u003e through the air hose and run the tool at idle for ~30 seconds. Also drain moisture from your air compressor regularly to protect the internal components and extend the tool's lifespan.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What makes this grinder suitable for precision engraving and carving?\u003c\/h4\u003e\n\u003cp\u003eA: The JQS-270A features \u003cstrong\u003eimported Japanese bearings\u003c\/strong\u003e, a short collet seat for reduced deflection, and a rotary concentricity of just 0.01–0.03 mm\/m. This combination minimizes vibration and keeps the tool running true at high speed, resulting in cleaner, smoother workpieces and greater durability of grinding rods.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What collet sizes does the JQS-270A pneumatic die grinder accept?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The JQS-270A accepts collets in the 2.38–3.0 mm range, making it compatible with a wide variety of standard engraving bits, grinding rods, and carving accessories.\"}}, {\"@type\": \"Question\", \"name\": \"Does this air carving pen require an air compressor?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. As a pneumatic tool, the JQS-270A requires a compatible air compressor to operate. The included 1.6 m air hose connects directly to your compressor's air line. Ensure your compressor provides adequate pressure for optimal performance.\"}}, {\"@type\": \"Question\", \"name\": \"How do I maintain this pneumatic die grinder for long-term use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Regular lubrication is key. Before first use and after every session, add 5–8 mL of pneumatic tool oil through the air hose and run the tool at idle for ~30 seconds. Also drain moisture from your air compressor regularly to protect the internal components and extend the tool's lifespan.\"}}, {\"@type\": \"Question\", \"name\": \"What makes this grinder suitable for precision engraving and carving?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The JQS-270A features imported Japanese bearings, a short collet seat for reduced deflection, and a rotary concentricity of just 0.01–0.03 mm\/m. This combination minimizes vibration and keeps the tool running true at high speed, resulting in cleaner, smoother workpieces and greater durability of grinding rods.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Pneumatic Die Grinder Air Carving Pen 2.38–3.0mm 70,000 RPM\", \"item\": \"https:\/\/gf1krb-by.myshopify.com\/products\/pneumatic-die-grinder-air-carving-pen-2-38-3-0mm-70000rpm\"}]}\u003c\/script\u003e","brand":"NIFTY","offers":[{"title":"Default Title","offer_id":67882916610272,"sku":"\u003cnone\u003e","price":135.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0831\/5384\/6496\/files\/S4d87a65c8d9340c7a7361b18d2d063b70.webp?v=1791774148","url":"https:\/\/niftyshopmart.com\/products\/pneumatic-die-grinder-air-carving-pen-2-38-3-0mm-70000rpm","provider":"NIFTY","version":"1.0","type":"link"}