Ball Screw SCR 2510

Detailed Product Review

Ball Screw SCR 2510 is a critical linear drive component in industrial automation systems, designed to convert rotary motion into linear motion with high efficiency. This system operates on the principle of balls, placed in helical grooves on the shaft, circulating in corresponding grooves within the nut. As the shaft rotates, the balls move the nut axially. The SCR 2510 model’s 25mm nominal shaft diameter offers a cross-sectional area optimized for high torsional rigidity and axial load-carrying capacity, while the 10mm pitch value provides 10mm of linear travel per motor revolution, creating a balanced performance profile suitable for both high-speed applications and systems requiring precise positioning. This combination ensures millimeter-level accuracy in positioning and repeatability, especially in environments where dynamic and precise motion control is mandatory, such as CNC machine tools, robotic systems, and automated assembly lines.

The rolling (rolled) method applied in the product’s manufacturing achieves a surface hardness of 55 HRC on the shaft. This surface hardness maximizes wear resistance against the high stresses generated at the contact points between the balls and the shaft, extending fatigue life. The SCR 2510 is designed for perfect compatibility with the SFUR series flanged nut, a nut type that offers ease of mounting and flexibility in system integration. The four rows of ball circuits within the nut mechanism allow axial loads to be distributed over a larger area, significantly increasing both static and dynamic load capacity and guaranteeing smooth and stable motion performance even under heavy loads. Furthermore, the double-sided seals integrated into the nut body prevent dust, chips, moisture, and other particles, inevitable in industrial environments, from entering the ball raceways, thus protecting the internal mechanism. This extends the system’s precision and maintenance intervals, reducing the total cost of ownership. These technical features make the SCR 2510 a versatile solution that can be integrated with various drive units such as servo motors, stepper motors, and geared motors.

High Axial Load Capacity and Rigidity: The four rows of ball circuits in the SCR 2510 ball screw nut allow axial loads to be distributed over a larger contact area between the balls and the grooves. This engineering design significantly increases static and dynamic load-carrying capacity compared to single or double-row ball systems. The more uniform distribution of loads minimizes elastic deformation of the system even under heavy machining forces or high acceleration/deceleration conditions, thus offering high rigidity and stability, directly impacting machining accuracy and repeatability.

Superior Surface Hardness and Wear Resistance: The rolling (rolled) method used in shaft manufacturing compresses the material’s grain structure, creating high surface hardness (55 HRC) and tensile strength. This process induces compressive stresses on the shaft surface that prevent microscopic crack formation and extend fatigue life. The 55 HRC hardness level exhibits exceptional resistance to the contact stresses and friction generated during the continuous rolling motion of the balls. This condition minimizes the wear rate, significantly extending the product’s operational life and preventing performance degradation even under long-term, intensive working conditions.

Precise and Vibration-Free Motion Characteristics: The optimized 10mm pitch and ball circulation mechanism ensure operation with minimal friction and backlash during the conversion of rotary motion to linear motion. This design offers micron-level positioning accuracy even at high speeds and provides smooth motion by eliminating the “stick-slip” effect. The precise guidance of the balls and their smooth progression through the return channels reduce the system’s vibration levels. This feature allows the system to exhibit superior performance, especially in precision machining applications where surface quality and geometric tolerances are critical, or in systems requiring high-resolution positioning such as optical alignment.

Technical Specifications and Capacity

Technical Frequently Asked Questions (FAQ)

What engineering advantages does the 10mm pitch of the Ball Screw SCR 2510 offer in terms of system performance?

The 10mm pitch of the SCR 2510 is a critical parameter in the conversion of rotary to linear motion and directly impacts system performance. This pitch value provides 10 millimeters of linear travel per motor revolution. From an engineering perspective, this offers an optimal balance between applications requiring high-speed movement and those needing precise positioning. While larger pitches allow for higher speeds, lower pitches offer higher resolution and require less motor torque. The 10mm pitch stands out in most industrial automation applications, particularly in CNC machine tools and high-speed assembly lines, for its ability to provide sufficient travel speed while maintaining micron-level positioning accuracy. Furthermore, this pitch value helps optimize energy consumption by providing high efficiency in converting torque from the drive motor into axial force.

Compared to ground ball screws, what technical differences and advantages does the rolled manufacturing method of the SCR 2510 model bring?

Ball screws manufactured by the rolling method offer different production processes and, consequently, different technical specifications compared to ground ball screws. In the rolling process, the shaft material is cold-formed between dies. This process compresses the material’s grain structure and creates compressive stresses on the surface, increasing the shaft’s fatigue resistance and surface hardness (55 HRC for SCR 2510). While ground screws can achieve higher precision classes (e.g., C0, C1), rolled screws generally meet industrial standard precision classes such as C7 or C5. Rolled ball screws like the SCR 2510 offer sufficient precision and durability for most industrial automation applications with high load capacity, superior wear resistance, and a more economical cost. Especially for environments with vibration or shock loads, the hardened surface achieved by rolling and the increased fatigue life can provide a more robust solution compared to ground screws.

What is the engineering impact of the integrated double-sided seals in the nut structure on the operational life and precision of the Ball Screw SCR 2510?

The integrated double-sided seals in the nut of the Ball Screw SCR 2510 provide a critical protective mechanism for the system’s operational life and precision. Industrial environments are rich in chips, dust, metal particles, coolants, and other contaminants. The ingress of these foreign substances into the ball raceways can lead to abrasive effects between the balls and the shaft/nut grooves, causing surface damage, increased friction, and consequently, loss of precision. Double-sided seals physically prevent such contaminants from entering the internal mechanism, ensuring the ball raceways remain clean. They also prevent internal lubricant from escaping, maintaining optimal lubrication conditions. This protection significantly reduces the wear rate of the ball raceways, extends maintenance intervals, and allows the ball screw to maintain its design precision throughout its nominal life, thereby increasing the overall reliability and efficiency of the system. Mermak supplies these high-quality components to customers in the United Kingdom, United States, Canada, Australia, Ireland, New Zealand, South Africa, and similar international markets.

How does the four-row ball circuit design optimize the ball screw’s resistance to axial forces and its rigidity?

The four-row ball circuit design used in the nut of the Ball Screw SCR 2510 offers significant engineering optimization in terms of resistance to axial forces and rigidity. Compared to traditional single or double-row designs, increasing the number of balls and distributing the load across four separate rows significantly reduces the contact stresses on the balls. This directly increases the ball screw’s static and dynamic load-carrying capacity. The distribution of the load over a larger contact area minimizes elastic deformation between the nut and the shaft, ensuring the system exhibits less deflection and provides higher rigidity even under higher axial forces. High rigidity is vital for maintaining positioning accuracy and repeatability, especially in applications with cutting forces or high acceleration/deceleration forces. This design also enhances the system’s vibration damping capacity, providing smoother and more stable motion characteristics. With 16 years of experience, Mermak ensures these products are manufactured in the Ankara Uzay Sanayi factory/warehouse, with up-to-date stock quantities and prices available on our website. Stocked products are dispatched directly from the warehouse without production delays, ensuring careful packaging, meticulous invoice/document handling, and reliable logistics partners. The Mermak team closely monitors the shipment process, and product videos or factory tours can be arranged via WhatsApp or other contact channels upon request, serving clients across the United Kingdom, United States, Canada, Australia, Ireland, New Zealand, South Africa, and other international markets.