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ACME Lead Screws & Ball Screws

Ball & Lead Screws

Power screws are a common means of translating rotary motion into linear motion. There are several different types, each of which has its own advantages and disadvantages depending on the requirements of the application. Acme lead screws are defined by their thread profile, which is trapezoidal with a thread angle of 29°.

There are two immediate results of this difference in profile. It is much easier to machine, so Acme lead screws are much cheaper than square lead screws or ball screws. The second difference is a much larger area of contact between the screw and the nut. This has both advantages and disadvantages.

First, the load capacity is much higher. Second, there is much higher friction, which makes them much less efficient, but also prevents them from back-driving in most situations. So due to overheating and low efficiency, they are ill-suited for continuous power applications, but are great for vertical motion applications where the load must be suspended without dropping, like lifts and jacks. They are also suitable for medical lab automation and treatment devices, screw press drives, support legs and micro lathes.


Precision Ball Nuts

Precision Ball Nuts


Ball screw assemblies are efficient in converting rotary motion to linear motion. A series of precision steel Ball Nuts are offered and 2 optional mounting brackets for flange mounting or base mounting. Ball nuts and brackets are compatible with 16 mm diameter ball screws. Ball nuts are anti-backlash.


Precision Ball Screws

Precision Ball Screws


Ball screw assemblies produce greater than 90% efficiency in converting rotary to linear motion and have long life expectancy. Precision Ball Screws are offered in a various pitches and lengths and are available with machined and non-machined ends. Lengths longer than 3 m are available on special request.


Commercial Acme Lead Screws

Commercial Acme Lead Screws


Acme Lead Screws are made of durable, high-quality stainless steel. Unlike electroplating, the anti-corrosive properties of stainless steel are not subject to frictional wear, which makes these lead screws ideal for corrosive environments. Acme lead screws are an adaptable, cost-effective solution to many linear motion applications. Acme lead screw assemblies are also well suited for vertical motion applications. The large contact area between the screw and the nut result in high-load capacity and prevents back-driving. Call us for secondary operations such as finishing the ends to fit a bearing or motor so that it works perfectly with your design.


Commercial Acme Lead Screw Nuts

Commercial Acme Lead Screw Nuts


Various sizes and number of starts, as well as various styles of Acme Lead Screw Nuts are available and are compatible with the Acme Lead Screws offered. Bronze nuts have the highest load capacity and require lubrication. Acetal nuts are very low friction and are highly efficient. Turcite® (Acetal, PTFE & Silicone filled) offers exceptionally long operating life due to its excellent wear characteristics. Anti-backlash nuts are also available.