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Ball Screw Nut

Ball Screw Nut backlash during axial reversals introduces non-linearities in servo response and cumulative positioning error in interpolated motion. Each Ball Screw Nut is designed with optimized contact angle geometry and class-matched ball diameter pairing, ensuring rigid mechanical coupling with the screw shaft. This configuration eliminates backlash creep across high-cycle reversals, maintaining positional consistency in CNC motion platforms and laser machining equipment requiring micron-level repeatability. 

Material

Carbon Steel (SCM420/SNCM220), Stainless Steel (SUS440C), or Tool Steel (SUJ2); Case-hardened to 58-62 HRC

Dimensional Tolerances

Inner Diameter – ±0.005 mm; Flange/Keyway – ±0.01 mm

Ball Groove Profile

Gothic Arch or Circular (±0.002 mm profile accuracy); Groove Diameter – Match screw lead ±0.003 mm

Number of Ball Circuits

2-6 circuits (standard); Custom configurations for high-load applications

Lead Accuracy

Grade C3 – ±0.05 mm/300 mm; Grade C5 – ±0.018 mm/300 mm
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Product Description

Ball Screw Nut preload stability often deteriorates due to differential thermal expansion and dynamic load fluctuation. To counter this, each Ball Screw Nut features preload tuning based on material thermal coefficients and track stiffness modeling. The preload remains consistent under real-world operational gradients, minimizing stiffness variation and enabling dimensional accuracy in high-speed cutting machines and thermally loaded gantry axes. 

Preload

2-5% of dynamic load capacity (adjustable via selective ball sizing)

Mounting Features

Flange – DIN 69051 standard; Keyway – ISO 7738 (JIS B 1301)

Surface Finish

Raceways – Ra ≤0.2 µm (superfinish); Non-contact – Ra ≤0.8 µm

Hardness

Raceways – 60-62 HRC; Core – 30-35 HRC (toughness optimized)

Certification Standards

ISO 3408-1, JIS B 1192, DIN 69051; RoHS compliant

Technical Advantages

Ball Screw Nut operation under non-ideal lubrication conditions can lead to contact fatigue, adhesive wear, and early failure. To mitigate this, each Ball Screw Nut incorporates low-friction return path architecture and micro-structured ball grooves that retain boundary lubrication even under low-speed or oscillating strokes. This design ensures long-term lubrication retention and consistent tribological performance, particularly valuable in cleanroom, vacuum, or maintenance-constrained environments. 

Ball Screw Nut assemblies subjected to off-axis or combined loads face track jamming or rapid wear. Each Ball Screw Nut is engineered with groove offset compensation and lateral relief features to support minor misalignment and radial force coupling. This allows tolerance to shaft deflection or assembly stack-up errors, which is essential for robotic joints, offset load carriages, or spindle-driven vertical systems. 

 

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Industry Applications

Semiconductor Wafer Handling Systems

Provides sub-micron positioning accuracy and thermal preload stability for photolithography stages and die-alignment subsystems in cleanroom environments. 

Robotic End Effectors and Actuators

Maintains axial stiffness and smooth reversals in joint actuation under variable load paths with compact envelope integration. 

Medical Imaging Equipment

Delivers vibration-free linear translation for gantry or patient table motion where consistent velocity and low audible noise are critical. 

Aerospace Flight Simulators and Test Rigs

Handles bidirectional axial loads with high rigidity and minimal thermal expansion for dynamic response in load simulation platforms. 

Injection Molding and Servo-Driven Presses

Supports high-speed, short-stroke linear actuation under oscillatory loads with reinforced wear resistance and preload retention. 

Electronics PCB Assembly and Pick-and-Place Machines

Provides stable micro-step motion for component placement under rapid directional changes and accelerative forces with low mechanical hysteresis. 

 

Vibration Damping and Resonance Mitigation

Ball Screw Nut assemblies often contribute to mechanical resonance within the drive train, reducing surface finish and control fidelity. To suppress these effects, each Ball Screw Nut employs return path damping zones and a tuned preload stiffness profile, designed to shift resonant frequencies away from operational bands. The result is smoother motion at high interpolation speeds and stable dynamics during fine feed applications in inspection gantries and diamond turning machines. 

Ball Screw Nut fatigue life under short, repetitive strokes is limited by contact zone overlap and impact-induced microcracks. Each Ball Screw Nut design integrates hard-coated tracks and extended ball distribution geometry to spread contact loads across larger surface areas. This prevents localized wear patterns and supports long-term use in servo actuators, hydraulic valve drives, and press-feed automation subjected to sub-10mm reciprocating motion. 

ball screw nut

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Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure preload consistency in Ball Screw Nuts used in multi-axis CNC systems?

Frigate uses matched ball sets and ground raceway profiles to achieve uniform preload distribution across the nut length. Each Ball Screw Nut undergoes dynamic preload calibration based on axial stiffness targets. This eliminates backlash drift during synchronized multi-axis interpolation. It ensures dimensional accuracy in high-speed contouring operations. 

What makes Frigate’s Ball Screw Nuts suitable for high-duty oscillation in servo presses and pick-and-place robots?

Frigate designs Ball Screw Nuts with hardened track surfaces and optimized ball return geometries for repeated short-stroke motion. These features reduce localized track fatigue and Brinelling under high reversal rates. Ball circulation remains smooth even under constant load direction change. This design extends operational life in fast-cycle electromechanical systems. 

How does Frigate handle thermal gradient issues in Ball Screw Nut assemblies used in enclosed or heated environments?

Frigate selects nut materials with thermal expansion coefficients matched to the screw shaft material. Combined with precision-machined internal clearances, this minimizes preload shift during temperature fluctuation. Thermal cycling simulations are used to validate preload stability. This approach maintains force consistency and motion integrity in temperature-sensitive platforms. 

What design features do Frigate Ball Screw Nuts include to resist radial loads during off-axis operation?

Frigate integrates controlled lateral relief and asymmetric groove geometry into the nut body. This supports radial force absorption without compromising ball circulation or causing jamming. The nut retains its alignment under small misalignments or shaft deflections. This is critical for robotic arms, overhung loads, and offset actuators. 

 

How does Frigate ensure lead accuracy in Ball Screw Nuts for applications requiring micron-level motion control?

Each Frigate Ball Screw Nut is manufactured to C3–C5 lead accuracy using precision-ground thread profiles and controlled ball engagement geometry. Coordinate measuring machines validate pitch consistency along the nut length. Frigate also models cumulative error over stroke to predict positional drift. This enables tight motion tolerances in metrology and micro-manufacturing applications. 

 

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

  • Bhilai
  • Chennai
  • Texas, USA
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Ball Screw Nut

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Ball Screw Nut

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