Cooling Trough Manufacturers in India
Sai Extrumech is a leading cooling trough manufacturer in India, building the water cooling systems that solidify insulation and sheathing after the crosshead. As the coated cable leaves the crosshead, it passes through water-filled cooling troughs that bring the hot polymer down to a stable temperature so the insulation sets without distortion. Correct, gradual cooling is critical to dimensional stability and surface quality.
What Is a Cooling Trough?
A cooling trough is a stainless-steel water tank positioned after the extruder crosshead. The freshly coated cable travels through the water, cooling gradually from the hot melt temperature to a solid, stable state. The trough length and water temperature are matched to the insulation wall thickness and line speed – too fast and the insulation stays soft; uneven cooling causes shrinkage and ovality.
Our Cooling Troughs
- Multipass cooling troughs – the cable passes through several times, giving long effective cooling in a compact footprint
- Straight (single-pass) troughs for simpler lines
- Temperature-zoned cooling – warm-to-cold zones for gradual, distortion-free cooling
- Stainless-steel construction with water circulation and level control
- Trough length matched to your insulation wall thickness and line speed
Why Choose Sai Extrumech
- 25+ years manufacturing multipass cooling troughs in Faridabad, India
- Gradual, temperature-zoned cooling for dimensional stability
- Compact multipass design saves valuable floor space
- Durable stainless-steel construction
- Built standalone or integrated into a complete extrusion line
- Exports to UAE, UK, South Africa, Bangladesh, Nepal & Sri Lanka
Applications
Our cooling troughs are used in power cable, building wire, solar, optical fibre and submersible cable lines, working with our crossheads and caterpillar haul-offs. See our full extrusion line range.
Frequently Asked Questions
What is a multipass cooling trough?
In a multipass trough the cable passes through the same tank several times, giving a long effective cooling length in a much shorter floor space than a straight trough.
Why is temperature-zoned cooling important?
Cooling the cable gradually from warm to cold prevents rapid shrinkage, ovality and surface defects, keeping the insulation dimensionally stable.
How long should a cooling trough be?
It depends on insulation wall thickness and line speed – thicker walls and higher speeds need more cooling. We size the trough to your specific line.
