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Welcome to B and H Gears. We have been manufacturing gears for over 30 years and have extensive experience in this field. But thats not all we do we take a look around our site to see the wide range of projects we can undertake.

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Elliptical gears

  Two non-circular gears with the same elliptical outline, each pivoting around one focus and positioned at the proper angle, will turn smoothly while maintaining contact at ellipital gear supplierall times. Alternatively, they can be connected by a link chain or timing belt, or in the case of a bicycle the main chainring may be elliptical, or an ovoid similar to an ellipse in form. Such elliptical gears may be used in mechanical equipment to produce variable angular speed or torque from a constant rotation of the driving axle, or in the case of a bicycle to allow a varying crank rotation speed with inversely varying mechanical advantage.

Elliptical bicycle gears make it easier for the chain to slide off the cog when changing gears.

An example gear application would be a device that winds thread onto a conical bobbin on a spinning machine. The bobbin would need to wind faster when the thread is near the apex than when it is near the base.

B & H Gears can produce all sizes of elliptical gears. From one offs to large batches. Click on the Contact us button or ring us with your requirements on 0161 627 4610.

 

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