Product FAQs

  1. What products does Rockford Ball Screw offer?
    Answer: Rockford Ball Screw manufactures rolled-thread ball screws and ball nuts, freewheeling ball screws and ball nuts and ACME screws  and nuts along with the bearing mounts needed to support them and absorb thrust loads. Our product line utilizes a mature technology. That being said, the vast majority of our products are custom-finished to our many customers' specifications.

  2. How do I decide which type of screw product to use?
    Answer: Each application presents its own unique challenges. Product families are Ball Screws (Rolled or Ground), Roller Screws, and ACME Screws. The basic parameters to help select the appropriate product are -- 1) Load 2) Speed 3) Length of Travel 4) Positioning Accuracy Required 5) Duty Cycle 6) Life Required 7) Orientation and 8) Environment. Typically, a compromise between speed, cost and life is reached.

  3. What are the advantages and disadvantages of each type?
    Answer: Roller screws provide high load carrying capacities per given diameter of screw, are capable of very high speeds and accuracies, are highly mechanically efficient, have minimal backlash (lost motion), but are very high in cost. ACME screws are capable of slower speeds, carry smaller loads for a particular size, are low in mechanical efficiency, and permit low positioning accuracies while exhibiting significant backlash. They are, however, very modestly priced and highly tolerant of contamination. Ball bearing screws successfully attempt to capture the best features of both worlds. Higher (than ACME) speeds and accuracies, near-roller screw efficiencies and intermediate load carrying capabilities all while being moderately priced.

  4. What are the advantages and disadvantages of freewheeling screws?
    Answer: Coming Soon. Call us if you just cannot wait.

  5. What if the product I’m looking for is not in your catalog or on your web site?
    Answer: Coming Soon. Call us if you just cannot wait.

  6. Does Rockford Ball Screw supply full machining services?
    Answer: Coming Soon. Call us if you just cannot wait.

  7. Can parts be made from stainless steel?
    Answer: Coming Soon. Call us if you just cannot wait.

  8. Can my screw products have plating or a coating added?
    Answer: Coming Soon. Call us if you just cannot wait.

  9. What is a safety spring and when it is used?
    Answer: Coming Soon. Call us if you just cannot wait.

  10. Does Rockford Ball Screw manufacture differential (twin-lead) screws?
    Answer: Coming Soon. Call us if you just cannot wait.

  11. What is the purpose of an end bearing support?
    Answer: Coming Soon. Call us if you just cannot wait.

 

 
 
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