What does a custom injection molding mold temperature controller cost?

That means the fastest way to a firm figure is to fix the specifications first and ask for an itemized quote second. The sections below explain which values to lock in, what customization actually changes, and how to compare two quotes on scope rather than on a headline number.

What drives the price of a custom mold temperature controller

These are the variables that move a quote, roughly in the order they add cost:

• Heating capacity. Electric heating power is the largest hardware cost in a water-type unit. The single-temperature water series runs from 6 KW to 36 KW of heating power across six frames, and each step up adds heating elements, contactors, and control hardware.
• Pump package. Pump power and maximum flow scale together across the series, from a 0.37 KW pump on the smallest frame up to a 2.2 KW pump on the largest. If your mold needs a flow or pressure point that no standard pump curve in the series delivers, the pump is usually the biggest customization cost after the heater.
• Manifold and circuit count. The splitter arrangement changes with frame size and with how many independent cooling circuits your mold actually runs.
• Instrumentation and control. The base series senses media in and out temperature with a K-type probe thermocouple. Adding a second control loop, a different sensor type, alarms, or data output to your plant network adds engineering, wiring, and testing time.
• Electrical build for the destination market. Export builds for US plants may require specific supply voltages, disconnect arrangements, or terminal labeling, and each of those changes the bill of materials.
• Cooling circuit assumptions. The series assumes clean water and direct cooling. If your plant water is not clean, or if you need a separated or closed-loop circuit, the build changes.
• Testing, documentation, and spares. Factory acceptance testing, pressure test records, translated manuals, and spare parts kits are real cost lines, and they are also what makes the unit supportable after installation.
• Compliance scope. Whatever standard your plant requires, the supplier has to document it explicitly rather than imply it.

Choose the frame size before you ask anyone for a price

Selection starts with two questions: how much heat the mold absorbs per hour, and how much coolant flow the cooling channels can pass without excessive pressure drop. Once you can answer those, the frame size mostly selects itself, and the price conversation becomes specific.

Heating power and pump power set the base cost

Heating power determines how quickly a cold mold reaches setpoint and how much heat the unit can replace during a fast cycle. The TMC 60W frame carries 6 KW of electric heating power with a 0.37 KW pump, which suits small tools and short cycles on small presses where the mold mass is low. Stepping up to the TMC 90W raises heating power to 9 KW and the pump to 0.75 KW, so the unit both heats faster and circulates more water. The TMC 120W keeps that same 0.75 KW pump package and raises heating power again to 12 KW, which is the configuration for a mid-size press running a heavier tool where the limiting factor is heat replacement rather than flow.

At the top of the range the logic changes. The TMC 180W and TMC 240W carry 18 KW and 24 KW of heating power respectively, and both use a 1.5 KW pump. The TMC 360W goes to 36 KW of heating power with a 2.2 KW pump. In other words, above 12 KW you are buying heat and flow in larger, less granular steps, so an oversized frame bought for margin is money spent on capacity your process may never call for. Match the frame to the mold you actually run.

Like-for-like comparison of the single-temperature water series

All six models share the same verified operating envelope: clean water as the heat transfer medium, a maximum temperature of 120 °C, a minimum temperature of cooling water temperature +5 to +30 °C, direct cooling, a K-type probe thermocouple for media in and out temperature sensing, and a 15 mm return water port. Specifications are subject to change without prior notice.

What maximum flow and maximum pressure each tell you

Flow and pressure are separate ratings, not one duty point, and reading them as a pair tells you which molds each frame can actually serve. The TMC 60W is rated at 42 L/MIN maximum flow and 0.35 MPA maximum pressure. That combination is enough to feed two small circuits at moderate hose length, and the 0.35 MPA ceiling is what caps how much back pressure the pump can overcome — if your mold has narrow channels or long hose runs, the flow figure alone will not tell you whether the unit can push water to the far end of the tool. The TMC 180W and TMC 240W both reach 165 L/MIN maximum flow at a 0.25 MPA maximum pressure. That is a high-volume, lower-pressure package: it suits large molds with generous channel cross-sections where total volume moved is the limiting factor, and it is the wrong choice if your circuit resistance is high, because the available pressure is lower than on the smaller frames. The TMC 360W raises maximum flow to 310 L/MIN at 0.3 MPA with a 1.2 inch media port, which is the configuration for very large tools or long supply lines where a bigger port keeps pressure drop from starving the far end of the mold. Before specifying any of these, confirm the pressure drop of your mold circuit against the pump curve with the supplier.

Temperature limits work the same way. Every model in this water series tops out at 120 °C, so if your process needs more than that, the selection has to move to a different heating medium before price is a meaningful question. The lower end is defined relative to your plant: the minimum temperature is cooling water temperature +5 to +30 °C, which means the achievable mold temperature depends on the cooling water you actually supply, not only on the controller. Buyers who have not measured their plant cooling water temperature in summer conditions often discover the unit cannot reach the low setpoint they expected.

What customization actually changes on the build

Customization on this class of equipment is rarely about a different heating principle. It is about adapting a standard frame to your plant, and each of the following items should be priced as its own line in the quote:

• Manifold and circuit count. The frames below 12 KW use a 2 in / 2 out splitter, the TMC 120W moves to 4 in / 4 out, and the larger frames use a single 1 in / 1 out connection at 1 inch or 1.2 inch. A custom multi-zone manifold on a large frame is a genuine engineering change with real machining and valving cost.
• Pump and flow matching. If your required flow and pressure point falls outside the standard curves in the series, this is where most of the customization budget goes.
• Instrumentation and control. A second control loop, an alternative sensor type, or data output to your plant network all add engineering, wiring, and test time.
• Voltage, phase, and electrical code work. Whatever supply arrangement your plant uses, it must be stated so the supplier builds and labels for it.
• Cooling water quality and heat exchanger specification. Clean water and direct cooling are the series baseline; anything else changes the build.
• Documentation, testing, and spares. Test records, manuals, and a spare parts kit are cost items, and they are also what keeps the unit running in year three.
• Compliance scope. Ask for the exact scope in writing rather than accepting an implied claim.

What to include in a quote request so you get a real number

A supplier can only price a custom mold temperature controller accurately when the request carries the mold data. Include the following and you will receive a firm number instead of a wide range:

• Molding machine tonnage, shot size, and cycle time
• Number of independent cooling circuits in the mold and their connection sizes
• Target mold surface temperature and the heat-up time you need
• Cooling water supply temperature, pressure, and cleanliness at your plant
• Supply voltage, phase, and any local electrical requirements
• Length and diameter of hose or piping runs between the unit and the mold
• Whether you need data output, remote monitoring, or integration with existing controls
• Spare parts, documentation, and test scope you expect to be included

With those inputs, a supplier can select a frame from the series above — or confirm that a true custom build is required — and quote the added engineering without guessing.

How to compare customization quotes on scope, not headline price

Two suppliers can present very different totals for what sounds like the same custom unit, and the gap is usually scope rather than margin. Normalize the quotes before deciding: confirm which manifold configuration is included, what pump curve is being supplied, whether the sensor type and control features are standard or optional, what supply voltage and code compliance work is covered, and what testing and documentation come with the unit. Ask each supplier to state the operating limit they designed to — whether the build is rated at the series maximum of 120 °C or configured for a lower ceiling — and whether the cooling assumption is direct cooling with clean water or a different circuit arrangement.

Also settle the change-order policy in advance. On a custom build, the manifold and the pump are the two items most likely to need rework if the mold changes after the order is placed, so understanding how those changes are priced is as important as the initial number.

Next step

Match your mold to a standard frame first, then define the customization scope in writing. Review the single-temperature water mold temperature controller specifications to shortlist a frame, and compare it against oil-type mold temperature controllers if your target process temperature exceeds the 120 °C water-series limit or your plant cannot guarantee clean cooling water. If neither condition applies, the water series will almost always be the lower-cost path, and the remaining price question is only about how much customization your mold genuinely requires.