Characteristics of ball screws

UMBRAGROUP is a company with decades of experience in the design and production of ball screws. It is a world leader in supplying these components for the aerospace and industrial sectors, with close to 50 years of experience and know-how. When standard technology is unable to meet customer needs, what represents a problem for other suppliers becomes the opportunity for the UMBRA Group to study new solutions.

Why is UMBRAGROUP a world leader in the production of ball screws and high precision components? Because it can design and produce screws capable of responding to an increasingly complex and competitive market, guaranteeing a wide range of types and dimensional combinations, technical solutions and dedicated components. Screws are the basic component of all applications where rapid, precise and reliable movements are required. The company offers a complete range of ball screws, capable of meeting stringent quality requirements.

UMBRAGROUP provides the best technology for the highest quality, in all circumstances.

The ball screw is a high-performance drive screw, where the balls perform a rolling motion between the axis of the screw and its nut. Compared to a conventional slide screw, this component has a drive torque value of one third, or even less. This feature makes it particularly suitable for lower motor energy consumption, ensuring greater reliability, efficiency and resistance even at very high loads.

The components designed and manufactured by UMBRAGROUP employ proprietary technologies and innovative and highly technological solutions that bring these advantages to the highest level.

UMBRAGROUP designs ball screws that must work in difficult environments and withstand heavy loads. They must guarantee maximum operability, quality and efficiency. Therefore, the company constantly invests in Research & Development to propose tailor-made solutions that are unmatched

One example is UMBRAGROUP’s use of Cronidur®30, a stainless steel with a high nitrogen content, used in the architecture of alternating ceramic-steel balls which eliminates the friction that causes corrosion and wear of the screws. It's an exclusive and patented UMBRAGROUP technology.

The use of Cronidur®30 and the alternating steel-ceramic architecture ensures extreme reliability even in space, where extreme conditions make the materials more susceptible to damage.

Another example is the use of screws with recirculation on the shaft rather than on the nut, used in short- stroke industrial applications - replacing hydraulic jacks - which has made it possible to obtain perfectly sealed and high-performing linear motion systems.

The combination of materials and cutting-edge technologies in the production of ball screws allows to:

• eliminate the problems of corrosion and premature wear typical of traditional screws;
• have high dynamics and precision;
• ensure high load capacity and force density;
• ensure the reliability of the systems;
• obtain considerable surface hardness;
• have excellent resistance to corrosion;
• give greater efficiency to the system;
• work with reduced working temperatures;
• eliminate overhaul and lubrication for the entire life cycle;
• Offer higher positioning accuracy.

UMBRAGROUP is a world leader in the supply of ball screws for civil aircraft.

Many manufacturers choose our precision components to power electromechanical flight control systems, fully-aware that passenger and crew safety depends on the proven strength and reliable performance of our products.

Discover UMBRAGROUP screws for civil applications.

The combination of materials and cutting-edge technologies in the production of ball screws allows us to:

• eliminate the problems of corrosion and premature wear typical of traditional screws;
• ensure the ability to withstand very high loads;
• ensure the reliability of the systems;
• reduce the costs deriving from replacements and revisions.

Applications

• Accessories
• Flap
• Brakes
• Thrust reversers
• Pylon Conversion
• Slat
• Stabilizers
• Flow regulating valve

UMBRAGROUP is not only a leader in civil aerospace, it is also a market leader in the production of Defense-sector ball screws via the Thomson^® Aerospace & Defense* a licensed brand of Linear Motion LLC of the UMBRA Group.

Research and development have led to numerous international patents and revolutionary innovations, such as the use of Cronidur® 30 stainless steel and alternating steel-ceramic architecture to combat corrosion. We combine vision with strategic planning, along with “cyber secure” information security and systematic excellence in production.

That's why UMBRA-branded ball screws are the best choice for the defense industry.

UMBRAGROUP screws for the defense sector

*Thomson^® is a registered trademark of Thomson Industries, Inc.

Applications

• Accessories
• Stabilizer flap
• Trap door
• Windshield
• Pilot window
• Flap
• Eyebolt
• Thrust reversers
• Pylon
• Scale
• Electromechanical system
• Steering systems
• Slat
• Stabilizer

Our long experience in the aerospace sector allows UMBRAGROUP to develop the most advanced technological solutions for precision motion control in the most hostile environment: Space. The use of Cronidur® 30 and the alternating steel-ceramic architecture ensures the extreme reliability of the ball screws even in space, where extreme conditions make the materials more susceptible to damage.

Discover UMBRAGROUP screws for the space sector

UMBRAGROUP screws power the most used drive systems and are the optimal solution for satellites, propulsion and spacecraft due to their:

• high dynamics and precision;
• high load capacity and force density;
• considerable surface hardness;
• excellent corrosion resistance thanks to Cronidur® 30 stainless steel;
• absence of overhaul and lubrication for the entire life cycle.

Applications

• Electric brakes
• Thrust positioners
• Thrust control vectors
• Wave Rider
• hatches
• robotics
• Surface extension and retraction systems / utilities / payloads
• Handling systems for solar panels (adjustable solar cells)
• Antenna handling systems

UMBRAGROUP is an excellent supplier of ball screws for the industrial market and a leader in the aeronautical sector, with close to 50 years of know-how and experience. The Group designs and manufactures industrial screws capable of responding to an increasingly complex and competitive market with a wide range of types and dimensional combinations, technical solutions and dedicated components.

Discover UMBRAGROUP screws for industrial applications

Ball screws are the basic component of all applications where rapid, precise and reliable movements are required. UMBRAGROUP solutions ensure:

• high linear speed of the axes
• high accelerations
• high thrust loads
• reduction of vibrations on screws with important length
• greater system efficiency and less wear
• reduced working temperatures
• higher positioning accuracy and life of the screw system.

Applications in the industrial sector

• Machine tools
• Automation
• Steel industry
• Measurement tools
• Automotive
• Railway equipment
• Construction of nuclear reactors
• Military equipment
• Medical equipment
• Oil industry
• Electromechanical presses
• Pumping systems
• Robotics

• Highly loaded screws
• Hybrid ball screws
• Ball screws with rotating nut
• High speed screws
• HighPer screws (High Performance in terms of precision, fluidity of movement, durability)
• Micro screws
• Short stroke screws
• Screws for special applications (robots, simulators, telescopic screws, brakes, additive manufacturing, dumpers)