Services
Spare Parts Supply for Industrial Furnaces
Fast. Documented. Manufacturer-Independent.
Unplanned stoppages cost — not just production time, but orders. NTH Therm holds the most frequently requested wear parts for its own systems in stock and sources replacement parts for third-party furnaces through an established supplier network in Germany, Austria and the Netherlands.
Stock Items for NTH Therm Systems
For NTH Therm systems we stock:
Sensors and measurement technology:
- Thermocouples Type K, N, S, B — common insertion lengths and protective-tube designs in stock
- Pressure transmitters and pressure switches (atmosphere furnaces)
- Oxygen probes and replacement electrolytes (carburising furnaces)
Power electronics:
- Solid-state relays (Crydom, Carlo Gavazzi) — all common power classes
- Power contactors and motor circuit-breakers (Siemens, ABB)
Safety components:
- Pilz safety relays and door safety switches
- Light curtains and proximity switches
Insulation and seals:
- Selected ceramic fibre replacement parts and sealing profiles
- Compensators for atmosphere-controlled furnaces
Third-Party Furnace Spare Parts
For furnaces from other manufacturers we source replacement parts through our European supplier network. Frequently requested standard parts (thermocouples, solid-state relays, contactors) are typically available within 1–2 working days.
For special parts (custom heating elements, SiC heating rods, bespoke seals) we check availability and lead time on receipt of your enquiry and respond within one working day.
Delivery Times at a Glance
| Part type | Typical lead time |
|---|---|
| NTH Therm stock items | Dispatch next working day |
| Express delivery | Same / next day (on request) |
| Third-party standard parts | 1–2 working days |
| Third-party general parts | 2–5 working days |
| Special parts / custom heating elements | 2–4 weeks |
Spare-Parts Catalogue and Stock Planning
On request we compile and maintain a documented spare-parts catalogue for your system: a complete bill of materials for critical wear and safety components with supplier part numbers, recommended minimum stock levels and installation notes.
This catalogue is particularly valuable for:
- Your own in-house spare-parts stocking (eliminates search time during a fault)
- Handover to new maintenance personnel
- Preparation for ISO, IATF or NADCAP audits (evidence of a structured maintenance concept)
Frequently Asked Questions
Which spare parts do you stock for NTH Therm systems?
For NTH Therm systems we hold a rolling stock of the most frequently requested wear parts: thermocouples (Type K, N, S, B), solid-state relays, power contactors, safety relays, light curtains, pressure transmitters and selected heating element types. A request quoting the system number is sufficient to identify the correct parts.
How quickly are spare parts delivered?
Stock items are typically dispatched on the next working day (express delivery on request). Third-party procured items within 2–5 working days. Special parts (custom heating elements, SiC elements, bespoke seals) by arrangement — typically 2–4 weeks.
Do you source spare parts for furnaces from other manufacturers?
Yes. For furnaces from other European and international manufacturers we source replacement parts through our supplier network in Germany, Austria and the Netherlands. Frequently requested standard parts (thermocouples, solid-state relays, contactors) are typically available within 1–2 working days.
Can you create a documented spare-parts catalogue for our system?
Yes. On request we compile and maintain a documented spare-parts catalogue for your system, including supplier part numbers, recommended minimum stock levels and installation notes. This simplifies your own stock planning and ensures continuity in the event of staff changes.
What information do you need for a spare-parts enquiry?
The fastest route is to provide the furnace type, year of manufacture and — if available — the serial number or a photograph of the nameplate and the affected component. For NTH Therm systems, the system number is sufficient.