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High-Speed Precision Double Gob (DG) Shear Blade
Professional-grade double gob shear blades designed for high-speed synchronized cutting in modern glass container manufacturing.
- Configuration:
- Double Gob (DG) & Multi-Gob Synchronized Parallel Cut
- Center Distance (Dual Units):
- 4 1/4" (107.95mm), 5" (127.00mm), 6" (152.40mm), 6 1/2" (165.10mm) & Custom
- Material Grade & Metallurgy:
- Cobalt-Reinforced Ultrafine Tungsten Carbide (WC-10%Co) / HSS M35
- Max Operating Temp:
- 1200°C (2192°F Continuous Molten Glass Contact)
- Cutting Cycle Speed:
- 200+ cuts per minute (CPM) with Zero-Lapse Cut Synchrony
Applicable StandardsASTM / ASME B359, SB359, B111, B444, DIN EN 12451
Tooling Material GradesCr12MoV, D2, SKD11, High-Speed Steel M2, Carbide
Precision Tolerance±0.005 mm (±0.0002 in) Ground Finish
Compatible TubingCopper (C70600, C71500), Stainless Steel, Aluminum
Technical Specifications
Advanced Synchronization Technology
In double-gob operations, even a micro-second difference in cut timing can lead to variations in gob temperature and weight. Nexmek blades are ground as a single unit to ensure absolute geometric identity.
- Matched-pair manufacturing for simultaneous gob separation across dual orifices
- Uniform blade tensioning to prevent uneven wear patterns and gob weight variance
- Consistent drag-coefficient across all cutting edges for Emhart / Bucher IS feeders
Center Distance & Feeder Compatibility
We provide a wide range of center distance configurations to ensure direct compatibility with your existing feeder setup and shear mechanism.
| Feeder Configuration | Center Distance (Imperial & Metric) | IS Machine Feeder Compatibility & Standard |
|---|---|---|
| Small DG | 4 1/4" (107.95mm) | Standard 8/10-Section IS Machines (Emhart / Bucher) |
| Medium DG | 5" (127.00mm) | High-Capacity Heavy Container Glass Feeders |
| Large DG | 6" (152.40mm) | Wide-Body 12-Section IS Machines (Bottero) |
| Custom / TG | 6 1/2" (165.10mm)+ / Custom | Specialized Triple Gob & Custom Glass Production Lines |
Thermal Management & Spray Retention
Multi-gob cutting generates significant friction and heat. Our DG blades feature a specialized matte surface designed to hold shear spray more effectively than polished alternatives.
- Increased lubricant retention for cooler operation
- Prevents 'glass pickup' and material build-up
- Extends the interval between regrinding cycles
- Reduces the risk of thermal shock on the blade edge