Copper electrode		FRENCO manufactures gearing in small batches and single-piece productions and specialises in high precision gearing. We also work closely with our partner companies to deliver complete components to your individual requirements. Benefit from our extensive experience with gearing! Who doesn’t like to work with a partner who has made “pure perfection” his business and achieves this on a daily basis?
	Grinding of internal teeth

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Manual Grinding:
Many spur tooth contours are still today best produced on conventional grinding machines. This means high demands are made on the grinding specialists.
Gear manufacture in a conventional grinding shop is possible with the following parameters:

Criteria	External teeth	Internal teeth	Others
Max. workpiece length	560 mm	300 mm
Max. face width	500 mm	70 mm	Pitch circle up to 30 mm
		110 mm	Pitch circle up to 60 mm
		150 mm	Pitch circle up to 150 mm
Max. through bore diameter	300 mm
Max. pitch circle diameter	300 mm	approx. 250 mm
Max. workpiece weight			50 daN
Materials			steel, copper, graphite
Verzahnungs- genauigkeit			Q3 as per DIN 3962
			Q3 as per DIN 5480

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NC-Grinding:
A KAPP VAS 55 P, which was specially improved to accommodate FRENCO’s requirement for highest precision, is used to NC grind gearing. Both dressable grinding wheels and CBN wheels are used.

Gear manufacture (external teeth) in the NC grinding shop is possible with the following parameters:

Criteria	Dimensions
Max. workpiece length	750 mm
Max. workpiece lengthface width	500 mm
Max. through bore diameter	500 mm
Max. pitch circle diameter	450 mm
Max. workpiece weight	40 daN
Materials	steel, titanium
Gear accuracy	Q2, Q3 DIN 3962

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Wire eroding:
Our wire eroding facilities are tuned for high precision accuracy using sophisticated technology and are placed in a fully climatised room. All of this together with the know-how of the operating specialists creates a brilliant combination which results in highest accuracy.

Manufacturing of internal gearing on the wire eroder is possible within the following parameters:

Criteria	Dimensions
Max. workpiece length	200 mm
Max. face width	200 mm
Max. through bore diameter	220 mm
Max. pitch circle diameter	approx. 210 mm
Max. workpiece weight	40 daN
Materials	steel, copper, nonferrous heavy metal
Gear accuracy	Q3 as per DIN 3962 Q3 as per DIN 5480

Brochures:
Our current brochures about 'Gear and spline manufacturing' you can download here.