The high-temperature tube furnaces are available in either horizontal (type RHTH) or vertical (type RHTV) designs. High-quality insulation materials made of vacuum-formed fibre plates enable energy-saving operation due to low heat storage and heat conductivity. By using different gas supply systems, operations can be performed under non-flammable or flammable protective or reactive gases or under vacuum.
Standard Equipment
- Tmax 1600 °C, 1700 °C, or 1800 °C
- Single-zoned design
- Dual shell ventilated housing made of textured stainless steel sheets for low surface temperature and high stability
- Exclusive use of insulation materials without categorization according to EC Regulation No 1272/2008 (CLP). This explicitly means that alumino silicate wool, also known as “refractory ceramic fibre” (RCF), which is classified and possibly carcinogenic, is not used.
- Insulation with vacuum-formed ceramic fibre plates
- Tube furnaces RHTV with frame for vertical operation
- Type B thermocouple
- Solid state relays provide for lownoise operation
- Ceramic working tube C 799 including two fiber plugs for operation under air
- Hanging and easy to change MoSi2 heating elements
- Power unit with low-voltage transformer and thyristor
- Over-temperature limiter with adjustable cutout temperature as temperature limiter to protect the furnace and load
- Switchgear and control unit separate from furnace in separate floor standing cabinet
- Defined application within the constraints of the operating instructions
- NTLog Basic for Nabertherm controller: recording of process data with USB-flash drive
- Controller with touch operation P570 (50 programs with each 40 segments)
| Model | Tmax1 | Outer dimensions3 in mm | Max. outer tube Ø | Heated length | Length constant | Tube length | Connected load5 | Electrical | Weight | |||
| Horizontal design | temperature1 +/− 5 K | |||||||||||
| in mm | ||||||||||||
| in °C | W2 | D | H | in mm | in mm | single zoned | three zoned | in mm | in kW | connection | in kg | |
| RHTH 50/150/.. | 1600 or | 530 | 480 | 640 | 50 | 150 | 50 | 70 | 380 | 5.8 | 3-phase4 | 70 |
| RHTH 80/300/.. | 1700 or | 680 | 550 | 640 | 80 | 300 | 100 | 150 | 530 | 9.4 | 3-phase4 | 90 |
| RHTH 120/600/.. | 1800 | 980 | 550 | 640 | 120 | 600 | 200 | 300 | 830 | 14.8 | 3-phase4 | 110 |
| 1 Values outside the tube. Difference to temperature inside the tube up to + 50 K | ||||||||||||
| 2 Without tube | ||||||||||||
| 3 External dimensions vary when furnace is equipped with additional equipment. Dimensions on request. | ||||||||||||
| 4 Heating only between two phases | ||||||||||||
| 5 The connected load refers to the standard furnace and may increase for a furnace with additional equipment. | ||||||||||||
| For furnaces with connection options for multi-range voltages, the connected load applies to the highest permissible connected voltage. | ||||||||||||
Starting as a small family business, Nabertherm has developed into one of the leading industrial furnace manufacturers with 600 employees and 150,000 customers worldwide.
All furnaces are made in Germany and Nabertherm offers not only a first-class spare parts service, but also excellent customer service for our customers.
Benefit from more than 75 years of experience in furnace construction.
The Nabertherm range of dental furnaces and accessories is characterized by high quality, an excellent price/performance ratio and short delivery times.
Nabertherm offers a wide range of products for perfect results of your dental restorations, from preheating furnaces for investment materials and casting molds to a wide selection of sintering furnaces for zirconium oxide, translucent zirconium oxide and CoCr alloys as well as furnaces for stress-relieving annealing after laser sintering.
For firing all common veneering ceramics in normal atmosphere or under vacuum and for pressing systems under vacuum Nabertherm offers vacuum furnaces with a specially developed controller and many sample programs for free download.
