Expanding Electric Motor Component For Shrink Fit
Custom Coil Formed To Motor Housing For Shrink Fit Expansion
Expanding Electric Motor Component For Shrink Fit
Induction Heat
Shrink Fit
What Is Heat Shrink Fitting
Most metals expand when they are heated. Induction shrink fitting is often used to heat and thermally expand parts to allow the insertion or removal of a mating component. For example, a 3" ID x 3 1/4" OD aluminum tube will expand internally by about .016" when heated to 500F. This allows it to be slid over a 3" OD shaft and then "shrink" into place when it cools down. Induction heating is often used for shrink fit applications because it is flameless, fast, controllable and repetitive and the heating can be focused where it is required without affecting nearby parts.
Shrink fitting motor housings, gears to shafts, bushings to shafts, bearing assemblies, flanges to hubs and induction bearing heating are just a few of the common examples of induction shrink fit applications.
A bearing housing is heated and expanded for insertion of internal components.
Why Magneforce Induction Shrink Fit
Magneforce has supplied hundreds of induction heating systems for heat shrink fitting components. With over 150 years of combined experience and in house CNC machining & 3D printing capabilities, we can provide fast turnaround on custom heating coils and processing fixtures to satisfy your shrink fit requirements. Our HS5000R2 induction heaters provide precise, controlled heating to guarantee that the heating and expansion of your part will be as specified and will be repeatable, with minimal operator skill required
No Charge Sample Processing
We will test heat your sample parts, assemble them and return them to you for evaluation. All process parameters including heating power, heating time, and expansion at temperature will be supplied. Setup pictures and/or videos will also be included as required.
Custom Heating
Coil Manufacturing
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We manufacture all heating coils in house, enabling rapid prototypes and the ability to refine the coil design and focus heating as required.
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Coil design can vary widely in terms of size and shape. All coils we make are insulated or encapsulated
as needed to insure safe and repeatable operation.
A special shape heating head is inserted into this motor housing to expand it for a stator drop insertion application
The diameter of the bore of this steel
valve housing is measured after heating
with a bore gauge to verify expansion
A custom heating head
is placed over this 4"drill
pipe adapter to expand it
shrinking to a shaft
Induction Heat Shrinking Advantages
Flameless, Repeatable Heating
The high temperature open flame of an oxyacetylene torch presents significant safety and fire hazards. Induction heating is non-contact & flameless.
Reduce Costs
Energy is only used when the system is actively heating. No furnace or expensive oxygen and acetylene needed.
Precise Temperature Control
Precision, repetitive induction heating guarantees that parts will be heated to the same temperature, cycle after cycle, for consistent insertion and shrinking.
A large steel gear is heat for shrink fitting to a shaft. The gear is simply placed on the tabletop and heating is initiated by pushbutton. A temperature sensor monitors the heating for consistent expansion.
Simplify Operation
When setup properly, the part to be expanded only needs to be placed in a fixture and then activate heating with a pushbutton.
Motor rings are heated and expanded simply by placed the rings on the marinite table top and closing the heating head. Different ring sizes can be heated without changing the setup.
Turnkey Induction Heat Shrink Systems
We can supply basic, cost effective process fixtures and part nests to complete your process or complete systems ready to run .
This custom induction heat shrink system uses a HS5000R2TS induction heater. It heats a large steel bushing to a preset temperature and then it holds it at temperature until the operator is ready for it. The heating coil is located beneath the tabletop and rises into position when the cycle is initiated. Temperature is monitored by an infrared sensor.
Made In The USA
All Magneforce induction heating systems are manufactured at our facility in Warren, Ohio.