{"product_id":"heidenhain-gap-1081-vertical-gap-encoders","title":"HEIDENHAIN GAP 1081 Vertical Gap Encoders","description":"\u003cp\u003eThe HEIDENHAIN GAP 1081 is an incremental exposed linear encoder for vertical gap measurement. It measures the distance between a measuring mirror and a scanning head, providing out-of-plane feedback for precision positioning and metrology. A mirror up to 3040 mm long allows continuous measurement while an axis moves across a plane.\u003c\/p\u003e\n\u003ch2\u003eTechnical Data\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring components:\u003c\/strong\u003e GAP 1001 mirror and AK GAP 108 scanning head\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror:\u003c\/strong\u003e glass or glass ceramic with an OPTODUR surface layer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMirror measuring length:\u003c\/strong\u003e selected lengths from 20 to 3040 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal scanning gap:\u003c\/strong\u003e 4.139 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring range:\u003c\/strong\u003e ±2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReference mark:\u003c\/strong\u003e possible upon request\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eData interface:\u003c\/strong\u003e 1 V\u003csub\u003ePP\u003c\/sub\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSignal period:\u003c\/strong\u003e 2.22 µm ±0.002 µm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutoff frequency:\u003c\/strong\u003e ≥27 kHz at −3 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraversing speed:\u003c\/strong\u003e 3.6 m\/min\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccuracy grade:\u003c\/strong\u003e ±0.2 µm for stationary measurement in the measuring direction; ±20 µm for motion perpendicular to the measuring direction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterpolation error:\u003c\/strong\u003e ±2 nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-reproducible position error:\u003c\/strong\u003e ±5 nm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical connection:\u003c\/strong\u003e 0.5 m, 1 m or 3 m cable with 15-pin D-sub connector; interface electronics in the connector\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum cable length:\u003c\/strong\u003e 30 m with specified cable; 3 m during signal adjustment with PWM 21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupply voltage:\u003c\/strong\u003e DC 5 V ±0.25 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent consumption:\u003c\/strong\u003e ≤200 mA without load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temperature:\u003c\/strong\u003e 10 °C to 40 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLaser classification:\u003c\/strong\u003e Class 3R\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSelection and installation\u003c\/h2\u003e\n\u003cp\u003eSelect the measuring mirror and scanning head together. Mirror length is the travel length across the plane, not the vertical measuring range. The accuracy specification depends on whether measurement is stationary or takes place during motion perpendicular to the measuring direction. Confirm mounting, mirror material, cable length, reference-mark requirements and signal adjustment before ordering.\u003c\/p\u003e\n\u003cp\u003eThe GAP 1081 uses visible laser radiation. Follow the laser-safety and installation instructions for the selected components. Do not look directly into the beam.\u003c\/p\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/docs.auto-met.com\/34-HEIDENHAIN-GAP1081-Specifications-2026.pdf\" target=\"_blank\" rel=\"noopener\"\u003eGAP 1081 specifications and dimensions, February 2026 catalog extract (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/docs.auto-met.com\/31-HEIDENHAIN-MULTI-DOF.pdf\" target=\"_blank\" rel=\"noopener\"\u003eMULTI-DOF measurement technology brochure, February 2026 (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eMachine down? Ask about expedited repair or replacement options. Include the scanning-head ID, mirror ID and measuring length so we can identify the correct replacement.\u003c\/p\u003e","brand":"HEIDENHAIN","offers":[{"title":"Default Title","offer_id":67661687718205,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/8222\/4189\/files\/35-HEIDENHAIN-GAP1081-white_d177caf1-b037-4146-948e-186ec5d719a1.png?v=1791604578","url":"https:\/\/auto-met.com\/products\/heidenhain-gap-1081-vertical-gap-encoders","provider":"Automation and Metrology, Inc.","version":"1.0","type":"link"}