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In order to ensure a long and dependable spindle life consider the following when determining your spindle sizing requirements.

1.    Select the largest spindle that will fit your particular space and speed requirements-- 
This ensures maximum spindle stiffness and longest life.
 
2.    Keep tool overhang to a minimum. Bearing loads increase and spindle stiffness decreases as you move further from the spindle bearings.
 
3. Verify that spindle front bearing bore is approximately as large, or larger than diameter of the hole being machined.

4. Keep within the maximum torque rating.
This minimizes any shaft or bearing loading and premature spindle failure.

5. Consider the spindle environment. Conditions play a role in design. For example, deflector covers are recommended when heavy coolant is used.

6. Specify the correct bearing arrangement. Most radial loaded applications, use a bearing pair at the nose end. Yet high axial loads, combination axial and radial loading or heavy or interrupted cuts, use a triplex bearing set at the nose end.

7. If you are unsure exactly what your needs are: Call 847.680.8833 and we will assist you in selecting a spindle that meets your needs.

For detailed sizing information, refer to our Download Section to determine your spindle requirements based on your operations.

Dynomax engineers are always here to help, Call 847.680.8833 or complete a Spindle Spec Form and we will take care of the rest! 
 
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