Link Metal CNC QBH Fiber Laser Protective Cap for Fiber Laser Sources

QBH Fiber Laser Protective Cap for Fiber Laser Sources

Professional industrial-grade QBH fiber laser protective caps, exclusively designed for all mainstream fiber laser sources. This product is a core consumable for fiber laser cutting and welding equipment, which can effectively block dust, cutting splashes and impurities, protect the laser resonator and internal optical components from damage. 1:1 perfectly matching original OEM factory parameters, with stable performance and long service life, it is an essential spare part for daily maintenance of fiber laser equipment.

This complete product series covers all mainstream fiber laser source brands on the market, including BWT, Maxphotonics, Raycus, IPG, Hotc, JPT and GW. All products are manufactured with strict quality control for reliable performance in demanding industrial environments.

Key Advantages of Our QBH Laser Protective Caps

• High-Grade Aviation Aluminum Cap Body: Precision CNC machined from high-grade aviation aluminum with strict size tolerance control. Provides perfect fit with original QBH interface, tight locking, no air leakage, no offset, and easy installation and replacement.
• Imported High-Purity Fused Silica Window: Features imported high-purity fused silica optical window with double-sided anti-reflection coating. High light transmittance up to 99.8%+, high laser damage threshold, suitable for 1064nm fiber lasers, and no thermal deformation under long-term high-load work.
• Excellent Dust-Proof & Anti-Splash Performance: Effectively isolates cutting debris, smoke and moisture, extends the service life of the laser source, and greatly reduces equipment maintenance costs and downtime.
• 1:1 OEM Perfect Fit: Exact match for original brand laser sources with direct plug and play installation. No additional debugging required, compatible with both original and compatible laser sources.
• 7 Brand Full Series Coverage: Complete range of models available, fully compatible with BWT, Maxphotonics, Raycus, IPG, Hotc, JPT and GW mainstream fiber laser sources on the market.
• Premium Surface Treatment: Anodic oxidation or gold/silver plating surface treatment provides excellent corrosion resistance and wear resistance, ensuring long service life even in harsh industrial environments.
• Broad Industrial Applicability: Suitable for all 1064nm fiber laser cutting machines and fiber laser welding machines, widely used in various industrial fields.

Compatible Equipment & Available Models

Compatible Equipment

• All Mainstream Fiber Laser Sources
• All Fiber Laser Cutting Machines
• All Fiber Laser Welding Machines
• All Original and Compatible Laser Processing Equipment

Available QBH Protective Cap Models (20+ Options Total)

BWT (凯普林) Series

• D13-H18 Original: Original type for BWT laser sources
• D12.8-H18.4 Silver Compatible: Silver compatible type for BWT laser sources
• D13-H19 With Step Compatible: Compatible type with step for BWT laser sources
• D13-H19 With Step Original: Original type with step for BWT laser sources
• D13-H18 Compatible: Standard compatible type for BWT laser sources

Maxphotonics (创鑫) Series

• D12.9-H9.4 Gold Original / Compatible: Gold type for Maxphotonics laser sources
• D12.8-H16.3 Gold Compatible: Gold compatible type for Maxphotonics laser sources
• D12.9-H16.9 Silver Original / Compatible: Silver type for Maxphotonics laser sources
• D12.8-H19.7 With Step Original / Silver Compatible: With step type for Maxphotonics laser sources
• D12.9-H18.5 Gold Original / Compatible: Gold type for Maxphotonics laser sources

Raycus (锐科) Series

• D12.7-H20.5 6kW With Step Original: 6kW original type with step for Raycus laser sources
• D12.8-H12 Silver Original: Silver original type for Raycus laser sources
• D12.8-H16 3300W Silver Original / Compatible: 3300W silver type for Raycus laser sources
• D12.8-H17 With Step: With step type for Raycus laser sources
• D12.8-H19.7 With Step Original: Original type with step for Raycus laser sources
• D15-H14 10000W Gold Original: 10000W gold original type for Raycus laser sources

Other Compatible Brands

• IPG: D12-H13 4kW Compatible: Compatible type for IPG 4kW laser sources
• Hotc (热刺): D12.8-H16.6 Silver Compatible: Silver compatible type for Hotc laser sources
• Hotc (热刺): D12.8-H17 Gold Compatible: Gold compatible type for Hotc laser sources
• Hotc (热刺): D12.8-H17.5 Gold Original / Compatible: Gold type for Hotc laser sources
• Hotc (热刺): D12.8-H18 Gold Original: Gold original type for Hotc laser sources
• JPT (杰普特): D12.8-H19.7 With Step Compatible: With step compatible type for JPT laser sources
• GW (光惠): D12.8-H18 Gold With Step: Gold with step type for GW laser sources

Custom Specifications Available: For custom models or other laser source consumables, please contact our sales team directly for personalized solutions.

Detailed Technical Specifications

Package Contents

• 1 x Selected Link Metal CNC QBH Fiber Laser Protective Cap
• 1 x Specialized Dust-Proof Anti-static Protective Packaging

Quality Assurance

All QBH fiber laser protective caps from Link Metal CNC undergo strict quality inspection before delivery, including dimensional accuracy inspection, optical performance test, air tightness test and appearance inspection.

We maintain strict ISO 9001 quality control standards to ensure stable and reliable product performance. All our products come with professional pre-sales consultation and comprehensive after-sales support.

Frequently Asked Questions

Q: Why is the QBH protective cap important?
A: The QBH protective cap is the first line of defense for your laser source. It prevents dust, cutting splashes, smoke and moisture from entering the laser resonator and damaging the expensive internal optical components. A damaged or missing protective cap can lead to catastrophic failure of the laser source, resulting in costly repairs and significant downtime.

Q: Are QBH protective caps interchangeable between different brands?
A: No, QBH protective caps are brand and model specific due to different dimensions, interface designs and power ratings. Using the wrong protective cap will result in poor fit, air leakage and potential damage to your laser source. Always select the exact model that matches your laser source.

Q: How do I choose the correct QBH protective cap?
A: First, identify your laser source brand and model. Then select the corresponding model from our list, paying attention to the dimensions (Dxx-Hxx), color (gold/silver), whether it has a step, and power rating. If you are unsure, please contact our sales team with your laser source model number.

Q: How often should I replace the QBH protective cap?
A: Under normal operating conditions, a QBH protective cap should be replaced every 1-2 months. However, it should be replaced immediately if you notice any damage to the window, film burning, or if laser power output decreases. Frequent cutting of reflective materials like aluminum and copper will accelerate contamination.

Q: Can I clean and reuse a QBH protective cap?
A: Yes, you can clean a lightly contaminated window using isopropyl alcohol and lint-free optical wipes. However, once the window has film burning, deep scratches or significant spatter that cannot be removed, it must be replaced immediately to avoid damage to the laser source.

View our full range of laser cutting accessories including nozzles, ceramic rings and lens assemblies.