With 20 years experience, Hongtai Alloy is your trusted source for quality m6 m8 industrial k type thermocouple for mold as one of the leading suppliers of various heaters in China. Providing you with the most competitive price, we welcome you to buy the heater from our factory.
Product Detailed Description
This industrial K-type thermocouple offers customizable lead lengths ranging from 1000mm to 5000mm, and is primarily applied in injection mold temperature measurement, plastic extruder heating zone monitoring, packaging heat-sealing blade temperature control, and various precision industrial temperature control systems. Featuring a threaded mounting design, the external probe utilizes corrosion-resistant SUS304 / SUS316 stainless steel along with hexagonal fastening threads (M6 / M8), while the interior is packed with high-purity thermal conductive insulation and constructed from high-precision NiCr-NiSi (Nickel-Chromium/Nickel-Silicon) thermocouple wire. The probe tail is equipped with a heavy-duty anti-kinking stainless steel spring guard and a wear-resistant metal-braided shielded lead wire, effectively withstanding mechanical pull and electromagnetic interference in harsh workshop environments. The product delivers rapid thermal response, high measurement accuracy, vibration and wear resistance, and secure, convenient installation. It comes standard with red and blue insulated cold-pressed U-type fork terminals, ensuring fast and reliable electrical connections to digital temperature controllers or PLC modules.
Technical Specifications
| Specification Item | Parameter / Description |
|---|---|
| Product Name | M6 M8 Industrial K-Type Thermocouple for Mold |
| Graduation / Type | K-Type (NiCr-NiSi) (Optional customized J-Type, E-Type, or PT100) |
| Mounting Thread | Metric M6, M8, M10, M12, or Inch threads (Supports fixed thread or adjustable compression fitting) |
| Temperature Range | 0°C – 400°C / 600°C / 800°C (Depends on internal insulation configuration and wire grade) |
| Measurement Accuracy | Class 1 (±1.5°C) / Class 2 (±2.5°C) (Complies with IEC 60584 standard) |
| Probe Diameter & Length | Φ4mm, Φ5mm, Φ6mm; Insertion depth 10mm – 100mm (Customized per mold hole depth) |
| Probe Sheath Material | SUS304 / SUS316L Stainless Steel |
| Lead Protection Structure | Stainless steel metal-braided shielded wire + tail anti-kinking buffer spring |
| Standard Lead Length | 1m, 1.5m, 2m, 3m, 5m (±10mm, supports arbitrary length customization) |
| Measuring Junction Form | Grounded (Ultra-fast response) or Ungrounded (High anti-interference) |
| Terminal Type | Red/blue insulated U-type fork terminals / Pin terminals / Standard mini thermocouple plugs |
| Cold Insulation Resistance | ≥100MΩ (500V DC, for ungrounded specification) |
| Standard Delivery Time |
3–5 business days (10–500 pcs) / 7 business days (>500 pcs) |
Custom Engineering Options
- Probe & Thread Structure: Fixed hex thread direct-insertion, bayonet spring-loaded adjustable style, 90-degree elbow probe, or flush end-face probe.
- Lead Wire Upgrade: Stainless steel metal-braided wire (wear-resistant against mechanical damage), high-temperature fiberglass-braided wire (temperature resistance up to 400°C), or PTFE waterproof and anti-corrosion jacketed wire.
- Connector Configuration: Standard red-positive/blue-negative U-type cold-pressed terminals, flat/round thermocouple male and female plugs, or direct tinned bare wire outputs.
Typical Applications
- Plastic injection mold and hot runner system temperature measurement
- Single-screw / twin-screw plastic extruder barrel and die temperature control
- Blow molding machine, thermoforming machine, and packaging heat-sealing blade temperature monitoring
- Aluminum/zinc alloy die-casting mold and industrial oven temperature collection
- Rubber vulcanization platen and chemical machinery surface contact temperature measurement
Industrial Case Studies
Case 1: Multi-Zone Closed-Loop Control for Plastic Extruder Dies and Barrels
- Operational Pain Points: Standard fiberglass-lead thermocouples on a plastic pipe extrusion line frequently suffered from lead breakage at the root and jacket wear during mold changes and routine cleaning, causing temperature control instruments to frequently trigger fault shutdowns.
- Engineering Solution: Replaced with Hongtai M8 threaded fixed K-type thermocouples, configured with 2-meter stainless steel metal-braided shielded lead wires and extended tail anti-kinking springs, utilizing a grounded measuring tip screwed directly into the barrel thermowell blind hole.
- Operational Result: The metal-braided mesh and buffer spring effectively eliminated mechanical pull and bending stress, shortened the thermal response time, and ran continuously for a full year without lead breakage or signal interruption.
Case 2: Precise Temperature Control for High-Speed Automatic Packaging Machine Heat-Sealing Blades
- Operational Pain Points: The sealing blades of high-speed packaging machines operate in a high-frequency reciprocating motion. Standard thermocouples were prone to nut loosening and thermal inertia lag due to vibration, leading to seal temperature fluctuations and burn-through of packaging films.
- Engineering Solution: Installed M6 compact short-probe K-type thermocouples, equipped with locking hex nuts and vibration-resistant U-type cold-pressed fork terminals, connected to a PID digital display temperature controller.
- Operational Result: The compact M6 probe made tight thermal contact with the heat-sealing blade body, maintaining stable contact under high-frequency mechanical reciprocation and ensuring the sealing temperature was stably controlled within the setpoint range.
With 20 years of professional manufacturing experience, Yancheng Hongtai Alloy Electric Apparatus Co., Ltd. is your trusted partner in industrial heating elements and mold-specific K-type thermocouple sensors. We offer highly competitive factory-direct pricing and rigorous OEM/ODM customization services. Feel free to contact us anytime for technical support and quotations.
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