{"product_id":"pzb21-l-ar300-21","title":"Atlas Copco PZB21-L-AR300-21 | PZB21 Piston Air Motor — Reversible, Aluminum, NEMA Flange","description":"\u003cdiv class=\"ac-motor-desc\"\u003e\n\n\u003cp\u003e\u003cem\u003eWhere compressed air meets precision engineering,\u003c\/em\u003e the \u003cstrong\u003eAtlas Copco PZB21-L-AR300-21\u003c\/strong\u003e is a aluminum piston air motor delivering \u003cstrong\u003e0.21 kW (0.28 hp)\u003c\/strong\u003e with fully reversible operation, precision low-speed control, and 25–40% lower air consumption than vane alternatives. NEMA Flange.\u003c\/p\u003e\n\n\u003ch2\u003ePerformance at a Glance\u003c\/h2\u003e\n\u003cp\u003eThis piston motor delivers \u003cstrong\u003e8.26 Nm\u003c\/strong\u003e at \u003cstrong\u003e242 RPM\u003c\/strong\u003e peak output (stall torque: \u003cstrong\u003e16.5 Nm\u003c\/strong\u003e). Centrifugal piston technology enables reliable high-torque starting at extremely low speeds — a performance envelope no vane motor can match below 100 RPM. Consumes \u003cstrong\u003e25–40% less compressed air\u003c\/strong\u003e than equivalent vane motors.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eModel \/ Part Number\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003ePZB21-L-AR300-21\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEDP Number\u003c\/th\u003e\n\u003ctd\u003e8411421026\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax Output Power\u003c\/th\u003e\n\u003ctd\u003e0.21 kW (0.28 hp) @ 6.3 bar (91 psi)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFree Speed (max)\u003c\/th\u003e\n\u003ctd\u003e300 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStall Torque\u003c\/th\u003e\n\u003ctd\u003e16.5 Nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRotation\u003c\/th\u003e\n\u003ctd\u003eFully Reversible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput Shaft\u003c\/th\u003e\n\u003ctd\u003eNEMA Flange\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eUnit Weight\u003c\/th\u003e\n\u003ctd\u003e4.21 kg (9.3 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOperating Pressure\u003c\/th\u003e\n\u003ctd\u003e6.3 bar (91 psi) — lubrication-free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eTechnology\u003c\/th\u003e\n\u003ctd\u003ePiston — centrifugal piston, lube-free\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax Output Power:\u003c\/strong\u003e 0.21 kW (0.28 hp) at 6.3 bar (91 psi) — rated for continuous-duty operation in fixed-plant and automation environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Fully Reversible—switchable by reversing air connections, no disassembly required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLubrication-Free Vane Design:\u003c\/strong\u003e Lubrication-free vane material eliminates in-line air oilers and prevents lubricant contamination of your process or product — ideal for food, pharma, and clean manufacturing environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eATEX Zone 1\/21 Certified\u003c\/strong\u003e — Approved for hazardous gas and dust atmospheres up to +40°C (104°F) in fixture-mounted use (EU Directive 2014\/34\/EU). Safe for use in classified areas where electric motors are prohibited.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Shaft — NEMA Flange:\u003c\/strong\u003e Direct integration into existing drive trains, couplings, sprockets, and IEC\/NEMA machine interfaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverload Safe:\u003c\/strong\u003e Stalls harmlessly under overload; self-starts when load is removed — no thermal protection, burnout risk, or electronic fault recovery needed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInfinitely Variable Speed:\u003c\/strong\u003e Regulate output speed and torque via inlet pressure or flow control valve — no electronic drives or VFDs required\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAtlas Copco Quality:\u003c\/strong\u003e Designed and manufactured to ISO 9001 standards; global spare parts and service network with application engineering support\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIdeal Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eWhite room and food-grade automation lines\u003c\/li\u003e\n\u003cli\u003ePrecise low-speed actuation in cleanroom and automation\u003c\/li\u003e\n\u003cli\u003eChemical and pharmaceutical dosing equipment\u003c\/li\u003e\n\u003cli\u003eStop-start high-cycle actuation applications\u003c\/li\u003e\n\u003cli\u003eHazardous area installations requiring ATEX Zone 1\/21 certified pneumatic drives\u003c\/li\u003e\n\u003cli\u003eEnvironments where electric motors present ignition, EMI, or water ingress risks\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe PZB piston motor's centrifugal piston design achieves high starting torque at extremely low speeds — \na performance profile no vane motor can match below 100 RPM. The fully reversible pneumatic circuit \nenables bidirectional operation without external flow-switching valves, simplifying installation and \nreducing component count.\u003c\/p\u003e\n\n\u003cp\u003eThe aluminium housing mates directly to standard IEC and NEMA motor flanges, \nmaking drop-in replacement of electric gearmotors straightforward — with all the inherent safety \nadvantages of pneumatic drive in ATEX and explosion-risk zones. \nA built-in inductive sensor port (M5) enables easy closed-loop speed monitoring.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePart Number:\u003c\/strong\u003e PZB21-L-AR300-21  |  \u003cstrong\u003eEDP:\u003c\/strong\u003e 8411421026  |  All data at 6.3 bar (91 psi). For full performance curves and dimensional drawings, see the Atlas Copco 2026 Industrial Air Motor Catalogue.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"Atlas Copco","offers":[{"title":"Default Title","offer_id":54183456964883,"sku":"8411421026","price":2519.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/PZB21_0c2391c7-a62c-41bc-9746-287b8ba4685c.png?v=1779815332","url":"https:\/\/aircompressorstore.com\/products\/pzb21-l-ar300-21","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}