{"product_id":"lower-laser-protective-lens-for-laser-cutting-head-d34-2-0-8-0","title":"Lower Laser Protective Lens for Laser Cutting Head D34x5","description":"\u003cp\u003e✅ Standard size: Φ34.0 × 5 mm, D34.0T5-6 specification, perfectly compatible with Baochu BLT series cutting heads such as the BLT421 and BLT641—plug-and-play\u003cbr\u003e✅ Imported fused quartz substrate, resistant to high temperatures and thermal shock; unlikely to shatter during long-term continuous high-power processing up to 20 kW\u003cbr\u003e✅ Double-sided high-threshold AR hard coating, high transmittance at 1064 nm, low laser energy loss, effectively ensuring cutting stability\u003cbr\u003e✅ Strong coating adhesion resists spatter and scrubbing, reduces burn spots on the lens, extends service life, and minimizes downtime\u003cbr\u003e✅ Precision optical grinding ensures strict dimensional tolerances and excellent flatness, preventing optical path deviation and protecting internal focusing and collimating lenses\u003cbr\u003e✅ Professional laser consumable replacement parts offering high cost-effectiveness; essential stock items for sheet metal fabrication shops\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eModel: D34.0T5-2\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDimensions: Diameter Φ34.0 mm, Thickness 5.0 mm; Chamfer 0.5 × 45°\u003cbr\u003eSubstrate: High-purity fused silica JGS1\u003cbr\u003eApplicable Wavelength: 1064 nm fiber laser\u003cbr\u003eSuitable Power: \u003cstrong\u003e≤8 kW\u003c\/strong\u003e fiber laser cutting machine\u003cbr\u003eOptical Coating: Double-sided high damage threshold AR anti-reflective hard coating\u003cbr\u003eTransmittance: 1064 nm \u0026gt; 99.7%, low absorption, low residual reflection\u003cbr\u003eSurface Finish: 40-20 Scratch-Dig\u003cbr\u003eTolerance: Diameter ±0.05 mm, Thickness ±0.03 mm\u003cbr\u003ePosition: Lower Protective Window\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCompatible with BLT421S\/421TS\/BLT510\/BLT520\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003eD34.0T5-4\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDimensions: Φ34.0 mm × Thickness 5.0 mm; 0.5 × 45° edge chamfer\u003cbr\u003eSubstrate: High-purity JGS1 fused silica\u003cbr\u003eSuitable Laser Wavelength: 1064 nm fiber laser\u003cbr\u003eSuitable Power: \u003cstrong\u003e≤15 kW\u003c\/strong\u003e fiber laser cutting machine\u003cbr\u003eOptical Coating: Double-sided high damage threshold AR (anti-reflective) hard coating\u003cbr\u003eTransmittance: 1064 nm \u0026gt; 99.7%, low absorption, low residual reflection\u003cbr\u003eSurface Quality: 40-20 Scratch-Dig\u003cbr\u003eManufacturing Tolerances: Diameter ±0.05 mm, Thickness ±0.03 mm\u003cbr\u003ePositioning: Lower Protective Window (outer protective lens on the nozzle side)\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCompatible with BLT420\/420S\/421\/421T\/442\/442T\/641\/641H\/642H\/520H\/640H\/643H\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003eD34.0T5-6\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eDimensions: Diameter Φ34.0 mm, Thickness 5.0 mm; Chamfer 0.5 × 45°\u003cbr\u003eSubstrate: High-purity fused quartz JGS1\u003cbr\u003eApplicable Wavelength: 1064 nm fiber laser\u003cbr\u003eSuitable Power: \u003cstrong\u003e≤20 kW\u003c\/strong\u003e fiber laser cutting machine\u003cbr\u003eOptical Coating: Double-sided high damage threshold AR anti-reflective hard coating\u003cbr\u003eTransmittance: 1064 nm \u0026gt; 99.7%, low absorption, low residual reflection\u003cbr\u003eSurface Finish: 40-20 Scratch-Dig\u003cbr\u003eTolerance: Diameter ±0.05 mm, Thickness ±0.03 mm\u003cbr\u003ePosition: Lower Protective Window\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCompatible with BLT460f\/461\/462\/461T\/462T\/661\/661H\/662H\/662MA\/560H\/462P\/663H\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e \u003cstrong\u003eD34.0T5-8\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDimensions: Diameter Φ34.0 mm, Thickness 5.0 mm; Chamfer 0.5 × 45°\u003cbr\u003eSubstrate: High-purity fused quartz JGS1\u003cbr\u003eApplicable Wavelength: 1064 nm fiber laser\u003cbr\u003eSuitable Power: \u003cstrong\u003e≤30 kW \u003c\/strong\u003efiber laser cutting machine\u003cbr\u003eOptical Coating: Double-sided high damage threshold AR anti-reflective hard coating\u003cbr\u003eTransmittance: 1064 nm \u0026gt; 99.7%, low absorption, low residual reflection\u003cbr\u003eSurface Finish: 40-20 Scratch-Dig\u003cbr\u003eTolerance: Diameter ±0.05 mm, Thickness ±0.03 mm\u003cbr\u003ePosition: Lower Protective Window\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCompatible with BLT481\/482\/681H\/682H\/682MA\/482P\/980MA\/683H\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Fabpartsdepot","offers":[{"title":"D34.0T5-2","offer_id":67665931534611,"sku":"1010702.00166","price":0.0,"currency_code":"AUD","in_stock":false},{"title":"D34.0T5-4","offer_id":67665931567379,"sku":"1010702.00039","price":0.0,"currency_code":"AUD","in_stock":false},{"title":"D34.0T5-6","offer_id":67665931600147,"sku":"1010702.00047","price":0.0,"currency_code":"AUD","in_stock":false},{"title":"D34.0T5-8","offer_id":67665931632915,"sku":"1010702.00049","price":0.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0994\/5835\/1379\/files\/5_2e10db53-89a4-44fb-a675-43c83284022b.png?v=1793006862","url":"https:\/\/au.fabpartsdepot.com\/products\/lower-laser-protective-lens-for-laser-cutting-head-d34-2-0-8-0","provider":"Fabpartsdepot","version":"1.0","type":"link"}