We supply an extensive range of customisable electric motor cooling fans.
Check out a full range of custom fans available in the online store.
With conventional ‘standard’ replacement fans, the bore dimensions rarely match those of the motor spindle ends. It is also often impractical to alter the fan bore dimensions due to the difficulties involved in holding the fan in a lathe. It can also be a costly operation to turn the motor spindle to a suitable dimension to get a proper fit. This results in repair shops having to carry large fan stocks which take up valuable storage space and involve capital outlay.
The custom range of fans are manufactured with a single, large-diameter bore. They are supplied with appropriate bushes to suit machining / turning out on a lathe. Problems from expansion are eliminated. This is because both fans and bushes are manufactured from the same material providing complete compatibility. A feature of this unique bushing system is the three lips inside the fan bore positioned above and below to ensure a strong, permanent fit from both sides. As the fan can be fitted afterwards, it is also possible to lock the bush to the motor shaft if necessary.
APPLICATIONS
We stock a range of polypropylene fans, designed for electric motors frames IEC71 – IEC180. They are an invaluable development for custom replacements and manufacturers of small batches.
CUSTOM ELECTRIC MOTOR FAN FITMENT
To cover the widest range of applications, fans are manufactured as flat as possible, making them suitable for motors of differing manufacture. For even greater flexibility, one size of bush is suitable for two fan types. The special mixture of easily machinable polypropylene used in manufacture provides a smooth finish. The fan boss is machinable to suit shaft size desired. Braithwaite Electrical can do this for you or if you have the facilities you can do it yourself. It is general practice to make the bush approximately 0.4mm smaller than shaft size. This allows a nice & strong fit on to the shaft. If a key-way is required the fan boss can also be slotted to suit.
TECHNICAL DATA
