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Point of Selection Selection flow based on function conditions

When selecting a Ball Screw, it is necessary to make a selection while considering various parameters.The following is a flowchart for selecting a Ball Screw.

  1. 1

    Selecting conditions

  2. 2

    Selecting Ball Screw accuracy

    • Lead angle accuracy
    • Axial clearance of Precision Ball Screw
    • Axial clearance of Rolled Ball Screw
  3. 3

    Estimating the shaft length

  4. 4

    Selecting lead･Selecting a shaft diameter

  5. 5

    Selecting a method for mounting the screw shaft

  6. Studying the permissible axial load

    PASS: Proceed to "Selecting the Permissible Rotational Speed."
    FAIL: Return to "4. Selecting a Shaft Diameter" (or "5. Selecting a Method for Mounting the Screw Shaft").

  7. Selecting the permissible rotational speed

    PASS: Proceed to 6: Selecting a Model Number (Nut Type)
    FAIL: Return to 4: Selecting a Shaft Diameter (or 4: Selecting Lead/5: Selecting a Method for Mounting the Screw Shaft)

  8. 6

    Selecting a model number (type of nut)

  9. Calculating the permissible axial load

    PASS: Proceed to "Investigating the Service Life."
    FAIL: Return to "6. Selecting a Model Number (Nut Type)" (or "4. Selecting a Shaft Diameter").

  10. Studying the service life

    PASS: Proceed to "Investigating the Rigidity."
    FAIL: Return to "6. Selecting a Model Number (Nut Type)" (or "4. Selecting a Shaft Diameter").

  11. Studying the rigidity

    PASS: Proceed to "Investigating the Positioning Accuracy."
    FAIL: Return to "4. Selecting a Shaft Diameter" (or "5. Selecting a Method for Mounting the Screw Shaft"/"6. Selecting a Model Number (Nut Type)").

  12. Studying the positioning accuracy

    PASS: Proceed to "Investigating the Rotational Torque."
    FAIL: Return to "2: Determining Ball Screw Lead Angle Accuracy" (or "4. Selecting a Shaft Diameter"/"5. Selecting a Method for Mounting the Screw Shaft"/"6. Selecting a Model Number (Nut Type)").

  13. Studying the rotational torque

    PASS: Proceed to "Investigating the Drive Motor."
    FAIL: Return to "4. Selecting a Lead" (or "4. Selecting a Shaft Diameter" /"6. Selecting a Model Number (Nut Type)").

  14. 7

    Studying the driving motor

  15. 8

    Safety design

    * Please refer to the lubrication and contamination protection sections on the ball screw options page.

  16. Selection Completed