Elevator Hearth (Bottom Loading) Furnaces – 1700°C & 1800°C


The Lenton range of elevator hearth furnaces is suitable for operation in air or inert gas atmospheres. The range is available with maximum operating temperatures of 1700°C and 1800°C with capacities of 3.4 and 7.9 litres.

Optimum temperature uniformity is obtained with the use of molybdenum disilicide heating elements which are positioned around the walls of the chamber ensuring uniform heating of the sample. A combination of dense refractory brick hot face insulation and a secondary low thermal mass layer of insulation provides a robust chamber with an efficient utilisation of power.

The electrically operated elevator hearth ensures operator safety and prevents direct radiation of heat from the chamber walls. It also ensures smooth loading/unloading of the workpiece/crucible and allows both heavy and delicate loads to be handled easily.

The furnace can be adapted to accommodate an atmosphere other than air, by the use of an inverted alumina crucible in a groove in the hearth. Please contact us for further details.

Overtemperature protection is fitted as standard.

Ideal for: melting of high purity glass, ceramic sintering & firing, thermal shock testing & firing in maintained atmospheres.


EHF 17/3

EHF 17/8

EHF 18/3

EHF 18/8

Maximum operating temperature (°C)  1700 1700 1800 1800
Capacity (l)  3.4 7.9 3.4 7.9
Internal dimensions (mm – height & diameter)  190 / 150 250 / 200 190 / 150 250 / 200
External dimensions  (mm – h x w x d)  975 x 750 x 530 1950 x 1360 x 800 975 x 750 x 530 1950 x 1360 x 800
Heat up time to 100°C below maximum temperature (minutes)  80 80 110 110
 Maximum power (kW)  5 9 6 9