{"product_id":"protective-lens-bottom-27-9mm-x-4-1mm-fused-silica-1064nm-4kw-xo-lcg01-0114","title":"Raytools BS06K-CAT Protective Lens (Bottom) – 27.9 × 4.1mm Fused Silica","description":"\u003ch1\u003e\u003cspan\u003eRaytools BS06K-CAT Bottom Protective Lens – 27.9 × 4.1mm\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp\u003e\u003cspan\u003eMaintain reliable cutting performance and protect your fibre laser cutting head with this \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e27.9 × 4.1mm bottom protective lens\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, designed for compatibility with the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eRaytools BS06K-CAT cutting head\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eManufactured from high-quality fused silica, this replacement protective lens helps shield the cutting head's internal optical components from molten metal spatter, dust and debris generated during laser cutting.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDesigned for fibre laser applications operating at a nominal wavelength of 1064nm and rated for power levels up to 4kW, it provides an effective protective barrier while maintaining excellent optical transmission and beam quality.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eReliable Protection for Fibre Laser Cutting Heads\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eProtective lenses are essential consumable components in fibre laser cutting systems. Positioned within the cutting head, the bottom protective lens acts as a barrier between the cutting environment and sensitive internal optics.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDuring operation, exposure to heat, contamination and cutting spatter can gradually affect lens condition, potentially reducing cutting quality and increasing the risk of damage to more expensive optical components.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eReplacing contaminated or damaged protective lenses helps maintain consistent cutting performance and minimise unnecessary machine downtime.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eHigh-Quality Fused Silica Construction\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eManufactured from fused silica, this replacement lens offers excellent thermal stability, low thermal expansion and optical properties suited to demanding fibre laser cutting applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIts construction helps minimise optical distortion and maintain efficient laser transmission, supporting accurate and consistent cutting results when correctly installed and maintained.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eKey Features \u0026amp; Benefits\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eRaytools BS06K-CAT compatibility\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for use as a bottom protective lens in compatible cutting heads.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePrecision dimensions\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – 27.9mm diameter × 4.1mm thickness.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eHigh-quality fused silica\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Excellent thermal stability and optical transmission.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eUp to 4kW rated power\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Suitable for compatible fibre laser cutting applications within the stated power rating.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003e1064nm nominal wavelength\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Designed for near-infrared fibre laser applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eProtects internal cutting head optics\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Helps prevent contamination from dust, debris and molten metal spatter.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSupports consistent cutting quality\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Helps maintain beam transmission and cutting accuracy.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eReplaceable consumable component\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e – Straightforward replacement as part of routine cutting head maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eProduct type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBottom protective lens\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eCompatible cutting head\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRaytools BS06K-CAT\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eDiameter\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e27.9mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eThickness\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4.1mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFused silica\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eNominal wavelength\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1064nm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eStated maximum laser power\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e4kW\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eApplication\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFibre laser cutting head protection\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003e\u003cspan\u003eCompatibility \u0026amp; Maintenance\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eSuitable for Raytools BS06K-CAT fibre laser cutting heads\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e requiring a 27.9 × 4.1mm bottom protective lens.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAlways check the existing lens dimensions, cutting head model and required optical specification before ordering.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor optimum performance, inspect protective lenses regularly and replace them when contaminated, scratched or damaged. Handle replacement optics carefully and follow the cutting head manufacturer's cleaning and installation procedures.\u003c\/span\u003e\u003c\/p\u003e","brand":"Raytools","offers":[{"title":"Default Title","offer_id":57651039011189,"sku":"FL8-00148","price":4.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/1957\/4982\/files\/ProtectiveLens_Middle_Bottom_27.9mmx4.1mmFusedSilica1064nm4kw211LCG0037_6844066b-6ecd-4f0c-a673-84dc6a8abcd2.webp?v=1714479881","url":"https:\/\/mantechparts.co.uk\/products\/protective-lens-bottom-27-9mm-x-4-1mm-fused-silica-1064nm-4kw-xo-lcg01-0114","provider":"Mantech Machinery Spares and Consumables","version":"1.0","type":"link"}