Electric furnace with a rotating tray system to ensure uniform thermal distribution for all flasks.
Product Manual
| Specification | RBF 32/21 | RBF 37+ |
|---|---|---|
| SKU# | 77-021 | 77-014 |
| Flask Capacity (No Flange) |
21 (100 mm / 3.9 in) 32 (89 mm / 3.5 in) 41 (76 mm / 2.9 in) |
37 (100 mm / 3.9 in) 45 (89 mm / 3.5 in) |
| Max Flask Height |
300 mm (Upper) / 11.8 in 230 mm (Lower) / 9.0 in |
230 mm / 9.0 in |
| Power | 220V, 50/60Hz, 3Ph 18.0 kVA | 380V, 50/60Hz, 3Ph 25.6 kVA |
| Burnout Temp. | Max. 950°C (200°C - 950°C) | Max. 850°C |
| Display Accuracy | Within ±5.0°C (100 - 950°C) | Within ±10.0°C (0 - 1000°C) |
| Afterburner Accuracy | Within ±3.0°C (@ 650°C) | Within 650 ± 3.0°C |
| Main Furnace Accuracy | Within ±3.0°C (100 - 950°C) | Within set temp ±2.0°C |
| Turntable Diameter | 15.8 in (x2) | 21.8 in (x2) |
| Program Steps/Memory | 8 Steps / 20 Memories | 8 Steps (Max) |
| Dimensions (Uncrated) | 32.5 x 42.0 x 78.5 in | 44.2 x 44.2 x 85.6 in |
| Weight (With Afterburner) | 460.0 kg (1014.0 lbs) | 460.0 kg (1014.0 lbs) |
| Applications | Gold, Platinum, Stainless Steel | Gold |
Yasui RBF Rotating Burnout Furnaces
Yasui’s RBF Rotating Burnout Furnaces offer uniform heat transfer through the upward convection of precise, temperature-controlled air. By utilizing rotating shelves where the flasks are seated, the RBF system ensures a safe, clean, and perfectly even burnout every time.
The integrated Variable Power Heating System automatically maintains set temperatures throughout burnout cycles with the utmost precision. Featuring unlimited program slots with multiple ramps and holds, the Yasui RBF allows you to create highly tailored cycles for any casting application.
Key Features & Benefits
After Burner System
Virtually eliminates noxious smells and fumes associated with antiquated gas and tabletop electric furnaces by reaching temperatures above 2000°F.
Flask Recall System
Automatically brings the required flask forward when entered into the control panel. The narrow door design significantly reduces heat loss while the furnace is open.
Advanced Insulation
Contains the intense heat of burnout cycles while maintaining an exterior surface temperature that is cool to the touch, ensuring a safer work environment.
Built-In Dewaxing
Features a dedicated system to remove injection wax efficiently prior to ramping up the furnace to high temperatures.
Technical Highlights
- Precise Convection: Upward airflow for 100% thermal uniformity.
- Unlimited Programming: Fully customizable ramps and holds for specialized investment materials.
- Rotating Shelves: Eliminates "cold spots" often found in stationary box furnaces.
- Energy Efficient: Variable power consumption based on real-time thermal demand.
| Specifications | |
|---|---|
| Brand | Yasui |
| Application | Gold, platinum, stainless steel |
| Model | RBF 21 |
| Power | 230 V, 50/60 Hz, 3 Phase 42.5 amps |
| Temp. Control Range | Max. 950°C |
| Flask Capacity (Max. Height: 300 mm) | 21 Flasks (Dia. 101 mm) 32 Flasks (Dia. 89 mm) 41 Flasks (Dia. 76 mm) |
| Dimensions (L x W x H) | Uncrated: 28" L (no side control box) or 38" L (with side control box) 30" W (including handle) 66" H (without afterburner) or 84" H (with afterburner) Crated: 48" x 40.2" x 78.7" (1220 x 1020 x 2000 mm) |
| Weight | 1014 lbs (460 kg) [Uncrated + Afterburner] 1,128.8 lbs (512 kg) [Crated + Accessories (2-pieces Furnace Crate & Accessories Box)] |
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