Process Deliverables

Application Data Sheet

This form-fill pdf is the first and arguably most important piece of communication from the customer to Spiroid. It asks all of the pertinent and critical questions that will be required in order that Spiroid’s engineers can arrive at the best gear set design in the most efficient manner.

If you have a new application and would like to begin the process of engaging Spiroid gearing for a solution, contact us for more information.


After narrowing to one or two cutting tool & gear set options, Spiroid will provide the customer with theoretical torque and efficiency curves that are specific to a given gear set and relevant to the application’s operating characteristics. The customer will review these curves to ensure that the selected gear set is appropriate for his or her application.


After selecting a specific gear set, Spiroid will provide the customer a gear set-specific dimensions. These dimensions are essential to the cutting tool which will create the chosen gear set. These ‘Static Dimensions’ must be incorporated into the customer’s detailed prints. The customer will design around the ‘Static Dimensions’ with geometry and tolerances that are required by the application.


On occasion, customers will require tooth load data to better understand their gear set’s theoretical force vectors. To accommodate this, Spiroid provides the baseline tooth load factors as well as tooth load data that is reflective of their application’s operating torques & speeds.


Since Spiroid’s ‘continuous torque’ ratings represent indefinite life at a given speed, there are applications where such conservative ratings are inappropriate. Usually, these applications have limited, less strenuous duty and life cycles. In these instances, Spiroid will provide ‘Ultimate Load Ratings’ which compare the application’s operational shear, contact and bending stresses with the max permissible values. (Note: max permissible values are determined by the pinion and face gear material, as well as associated heat treatment.) In all instances where ‘Ultimate Load Ratings’ are relevant, Spiroid recommends verification through testing since these values are theoretical and often impacted by mounting and lubrication, among other things.