Hardening oven N 7/H

annealingheatingfor general applications

Overview
Chamber furnace series N 7/H – N 17/HR with low, deep furnace chambers designed for small batches. Heating elements on support tubes provide free heat radiation and long service life.

Product description
These tabletop chamber furnaces feature three-sided heating (both side walls and bottom) and allow processes comparable to the LH 15/12 – LH 60/12 systems. Optional protective gas box enables inert atmosphere processing and direct temperature measurement at the load.

Features

• Tmax 1150 °C; recommended working temperature max. 1100 °C
• Deep chamber design with three-sided heating (side walls and bottom)
• Heating elements mounted on support tubes for free radiation and extended lifetime
• Bottom heating protected by heat‑resistant SiC plate
• Dual‑shell stainless steel housing with fan cooling to limit external surface temperature
• Multi‑layer insulation with lightweight refractory bricks; no RCF materials used
• Low energy consumption due to multi‑layer insulation
• Protective gas box for inert atmospheres with additional type K thermocouple
• Automatic gas supply system for 4–50 l/min; typical process flush rate 5–8 l/min
• Charge control for measuring temperature directly at the load in the gas box
• Loading plate and annealing/hardening foils supplied
• Controller P570 (touch; 50 programs × 40 segments) and monitoring tools
• MyNabertherm app for online monitoring; NTEdit and NTGraph for program input and evaluation; NTLog Basic for USB data logging
• Designed as tabletop models: N 7/H, N 11/H, N 11/HR, N 17/HR

Additional equipment

• VCD software package for process control, monitoring and documentation

Technical specifications (table)
Model | Tmax (°C) | Inner protective gas box W x D x H (mm) | Outer dimensions W x D x H (mm) | Process flush rate (l/min) | Connected load (kW) | Electrical | Weight (kg) | Heating time (min)
N 7/H System | 1150 | 180 x 190 x 90 | 800 x 650 x 600 | 5 - 8 | 3.0 | 1‑phase | 60 | 320
N 11/H System | 1150 | 180 x 290 x 90 | 800 x 750 x 600 | 5 - 8 | 3.5 | 1‑phase | 70 | 320
N 11/HR System | 1150 | 180 x 290 x 90 | 800 x 750 x 600 | 5 - 8 | 5.5 | 3‑phase | 70 | 70
N 17/HR System | 1150 | 180 x 440 x 90 | 800 x 900 x 600 | 5 - 8 | 6.4 | 3‑phase | 90 | 110

Technical characteristics / specifications

• Maximum temperature: 1150 °C (recommended working temperature max. 1100 °C)
• Deep chambers suitable for small loads with three‑sided heating
• SiC‑protected bottom heating and multi‑layer refractory brick insulation (no RCF)
• Automatic gas supply and protective gas box for inert atmosphere; charge control measures load temperature directly
• Controller P570; monitoring and documentation via MyNabertherm app, NTEdit, NTGraph, NTLog Basic
• Dual‑shell stainless housing with fan cooling and low energy consumption due to multi‑layer insulation