ULTRA.ROLL - Roller screws

Achieve greater power density, accuracy & reliability: customized to your needs

Vorteile von Rollengewindetrieben

Significantly higher power density compared to conventional drive spindles such as ball screws or trapezoidal spindles
Unrivaled combination of dynamism and power
Accuracies of up to 6µm / 300mm (G1) path variations possible
High repeatability and positioning accuracy
Compact drive solution
Ideal solution for servo presses, dosing, riveting processes, safety valves, hygiene and pharmaceutical applications

Your benefits with ULTRA.ROLL - roller screws

All designs available:

How does a roller screw drive work?

A roller screw drive is a drive screw that uses rollers or so-called planets to convert a rotational force into a translational movement. Its functional principle combines the features of a roller bearing and a planetary gearbox (see illustration). The planetary rollers are firmly guided in the nut and transmit the rotary movement of the spindle rod. The resulting advantage is that high forces can be converted at high dynamics (speed and acceleration).

Performance range of ULTRA.ROLL roller screws

Performance features	Min	Max
Cstat	-	4000
Cdyn	-	1300
Diameter	15	120
Gradient	1	40
Length	-	3000
Accuracy	G1	G5

Further features	Your advantages
Nut designs	Fully customizable according to customer drawing: - End and center flange nut - cylinder nut - Double nut - Special nut with additional mounts and highly functionally integrated ...and much more!
Special mother	Integration of screw-on surfaces, anti-rotation locks, centering, cardan bolts, etc.
Spindle bearing	High-performance range for round flange or standing flange solutions, optimized for heavy-duty applications in various bearing positions Fully sealed and lubricated for life
Field of application	All applications that require the highest load ratings, service life, low-noise operation and integration
Service life	Will be charged
Delivery time	14 weeks from order placement, express production on request

Do you have requirements that you could not find?

Then we look forward to hearing from you and finding a solution together.

Special solutions, bearing units and references from ULTRA.ROLL - Roller screws

Large number of completed development and series projects
Years of experience, know-how and expertise in the field of roller screws and precision spindles of all designs
Highly integrated design possible
Design, development and production of roller screw drives & associated heavy-duty bearing units
Fast delivery time and constructive design

Your path to a customized solution

01

Determination of requirements

Let us know what you need - our experts will analyze your requirements to find the right solution for you.

02

Individual advice

Benefit from a personal consultation in which we work together to select the optimum components for your application.

03

Solution development

Our team will develop a customized solution that is precisely tailored to your specific needs.

04

Implementation and support

Once a solution has been found, we support you during implementation and assist you with our after-sales support.

What are the differences between the designs of roller screws?

There are basically three different types of roller screw drive:

The roller screw drive with or without roller return differs mainly in the type of roller guide. The simpler design is the roller screw drive with roller return. At the end of a pitch, the planetary roller is moved to the next "gear". This simplified design has a positive effect on the price, but is limited in terms of precision and speed.

In roller screws without roller feedback, the spindle is synchronized to the nut via planetary gearing. This eliminates the need to reposition the planetary roller, which enables higher speeds, accelerations and positioning accuracies.

Inverted roller screws differ fundamentally in their design from all other mechanical drive screws. This design consists of a nut tube, planetary rollers and a push rod. All components are inverted, i.e. the thread is located in the nut tube and the push rod moves instead of the nut. This is ideal for applications in the hygiene sector, where installation space is limited and as a replacement for hydraulic lifting cylinders.

How does the ball screw differ from the roller screw?

The drive types differ in terms of load capacity, speed, precision, efficiency and price. The different performance characteristics are shown qualitatively in the illustration below.

In order to make a measurable statement in facts and figures, the respective application must be considered in detail. Ground ball screws, for example, are very precise drives, but this also has a direct impact on the price.