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Chocolate Cooling Tunnels

A cooling tunnel does one job: it takes product straight off the moulding line or enrober and cools it, under control, until the chocolate has set. The M-590 runs 5,000–9,000 kcal/h of cooling capacity across a 20-metre tunnel (L 20000 × W 1400 × H 1300 mm) on 24 kW. Product enters warm and fluid, and leaves with the crystalline structure that gives moulded and enrobed chocolate its snap.

The tunnel is where cooling stops being incidental and becomes a controlled step. Pull heat too fast and you risk stress cracks and bloom; too slow and the line backs up or the product deforms. We configure the tunnel to your line's output and product, so residence time matches what the chocolate needs — the 20-metre length is the catalogue configuration, and tunnel length is set to the throughput it has to keep up with.

Engineering line drawing of a long low chocolate cooling tunnel — segmented enclosure with two roof-mounted refrigeration units, conveyor stubs at both ends, and support legs.

Specifications

Models & specifications

Model M-590

Cooling Tunnel

Cooling capacity
5,000–9,000 kcal/h
Power
24 kW
Dimensions
L 20000 × W 1400 × H 1300 mm

Specifications: 2025 catalog

Applications

What it handles

  • Setting snap on moulded chocolate bars and tablets
  • Cooling enrobed pralines and countlines
  • Crystallising chocolate coatings after the enrober
  • Cooling product exiting production or cooking processes
  • Downstream of the M-560 one-shot moulding line
  • Feeding the M-100 conveyor toward sorting or packaging

Straight answer

What a cooling tunnel does not do

A cooling tunnel cools; it does not temper. It sets the crystalline structure that tempering established upstream — if the chocolate enters out of temper, the tunnel will chill it, but it cannot correct bloom or a poor crystal seed. The M-590 is built for continuous line product moving through it, not for batch cooling of loaded trays parked in a chamber. If your process needs both moulding and cooling, or if you are unsure whether a tunnel or a cooling cabinet suits your layout, tell us the product and the line output and we will size the step correctly.

Where it fits

Related lines & machines

Complete lines

Read next

The Complete Chocolate Production Line, Machine by Machine

Engineering line drawing of a one-shot chocolate moulding line — depositor tower with feed hopper feeding a long conveyor bed of moulds toward an end station.

Moulding Lines

One-shot chocolate moulding lines from 200-500 kg/h semi-automatic to 300-600 kg/h automatic, supplied with the moulds and downstream handling

  • M-540
  • M-560
  • M-100

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Engineering line drawing of a stainless-steel ball mill refiner — top feed hopper, front grinding-chamber face, side drive motor with cooling fins, and bottom discharge valve.

Conching & Refining Machines

Ball-mill refining and powder sugar milling for chocolate and cream production, plus conching engineered to order, built in Casablanca

  • M-150
  • M-500

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Questions

Frequently asked

What is the cooling capacity of the M-590 cooling tunnel?
The M-590 is rated 5,000–9,000 kcal/h of cooling capacity and draws 24 kW. The tunnel body is 20 metres long (L 20000 × W 1400 × H 1300 mm). Capacity and length are matched to the output of the line feeding it.
How long does the cooling tunnel need to be for my line?
Tunnel length is configured to your line output — the product needs enough residence time inside the tunnel to set as it moves through. The catalogue M-590 is a 20-metre configuration. Give us your throughput and product type and we will size the tunnel to keep pace without under- or over-cooling.
Which moulding line does the cooling tunnel pair with?
The M-590 pairs directly with the M-560 automatic one-shot moulding line at the exit, and feeds onward to the M-100 conveyor toward sorting or packaging. It also serves enrobing lines and other processes where product exits warm and must set. We build the tunnel to sit in the flow of your specific line.
Can a cooling tunnel temper the chocolate as well?
No. A cooling tunnel cools and sets structure; tempering happens upstream at the depositor or enrober. If chocolate enters the tunnel out of temper, the M-590 will still chill it, but it cannot fix bloom or a poor crystal seed. We will tell you where tempering needs to sit in your line.
Do you ship cooling tunnels outside Morocco?
Yes. We build in Casablanca and ship worldwide, with installations across Africa. A 20-metre tunnel ships as a line component alongside the moulding and handling equipment it pairs with. Destination-market requirements (CE for the EU, SASO/SFDA for Saudi Arabia, and others) are reviewed as part of every quotation.
How long does delivery and installation take?
Lead times are confirmed with each quotation, since a cooling tunnel is configured to your line length and output rather than pulled from stock. We install and commission the tunnel in place and train your operators on cooling settings. Tell us your line and target throughput and we will confirm the schedule with your quote.
What drives the cost of a cooling tunnel?
Cost follows tunnel length, cooling capacity, and the product it has to set, plus how it integrates with the line ahead of and behind it. A longer tunnel for higher throughput costs more than a short one for a slow artisan line. We quote against your actual line output rather than a fixed price — send us the numbers and we will price the configuration.

Request a quote

Send us your product and capacity target.

We come back with a line configuration and a quotation — one point of contact, from drawing to running line.

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