Double Nut Rolled Ball Screw
Maitu’s Double Nut Rolled Ball Screw stands as a high-precision mechanical component, expertly crafted to translate rotational movement into linear motion with outstanding efficiency and pinpoint accuracy. We have a mature production system and ball screw manufacturing supply chain, enabling us to quickly provide production and delivery solutions, etc.
Rooted in core engineering concepts, Maitu’s quality double nut rolled ball screws rely on a rolling-contact mechanism—recirculating ball bearings reduce friction between the screw shaft and nut to a minimum. This innovative design outperforms trapezoidal lead screws by a significant margin, boasting mechanical efficiency of 90% or higher. As such, it has become an irreplaceable choice for applications where precision, dependability, and energy savings are non-negotiable.
Technical Highlights
1.Threads on the screw are created via a precision cold-rolling technique. This process boosts surface hardness and ensures consistent grain structure, all while keeping costs manageable for medium-to-high-volume manufacturing runs.
2.The nut features a space-saving design integrated with ball return channels and deflectors. This setup guarantees seamless ball recirculation, even when subjected to fluctuating loads and operating speeds.
3.Selectable preload solutions—such as double-nut configurations or offset leads—effectively eliminate axial backlash, delivering exceptional positional repeatability for demanding tasks.
4.Manufactured in strict compliance with ISO 3408 and JIS B1192 standards, ensuring consistent dimensional accuracy and reliable performance across all units.
Key Performance Benefits
The cold-rolling process imparts compressive residual stresses to the screw’s surface, leading to notable improvements in three critical areas:
1.Extended Fatigue Life: Enhanced durability under dynamic loading conditions, with rated service life calculated in line with the industry-standard L10 life formula.
2.Superior Rigidity: Optimized stiffness characteristics make this ball screw ideal for applications requiring rapid responsiveness and minimal structural deformation.
3. Smooth, Quiet Operation: A premium surface finish (with Ra values typically ≤ 0.4 μm) minimizes vibration and reduces operational noise, enhancing overall system performance.
Material Specifications
| Screw Shaft: | High-carbon chromium steel (SCM435/SNCM220) through-hardened to HRC 58-62. |
| Nut Housing: | Alloy steel with black oxide or zinc-nickel coating for corrosion resistance. |
| Balls: | Grade 100 chromium steel (GCr15) with optional ceramic alternatives for high-speed applications. |
Application Industries
CNC machine tools and industrial robotics
Aerospace actuation systems
Medical imaging and automated diagnostic equipment
Semiconductor wafer handling and lithography
Electric vehicle battery assembly lines
Our Double Nut Rolled Ball Screw undergo rigorous testing for positional accuracy. And this can ensure compliance with industrial precision grades (C3-C7). By combining rolled thread economy with ball screw performance, this product delivers an optimal solution for automation industries where precision, longevity, and total cost of ownership are sensitive.
Production Parameters
| Type | Precision Grade | Direction | Start | Code | Nut Type | Limited Length | ||
| d | Lead | Beads Da | Right/Left | |||||
| 6 | 1 | 0.8 | C10,C7 | R | 1 | SCR00601 | K | 1000 |
| 8 | 1 | 0.8 | C10,C7,C5 | R | 1 | SCR00801 | K | 1000 |
| 2 | 1.2 | C10,C7,C5 | R | 1 | SCR00802 | K | ||
| 2.5 | 1.2 | C10,C7,C5 | R | 1 | SCR0082.5 | K,BSH | ||
| 10 | 2 | 1.2 | C10,C7,C5 | R | 1 | SCR01002 | K,BSH | 3000 |
| 4 | 2 | C10,C7,C5 | R | 1 | SCR01004 | K,BSH | ||
| 12 | 2 | 1.2 | C10,C7,C5 | R | 1 | SCR01202 | K | 3000 |
| 4 | 2.5 | C10,C7,C5 | R | 1 | SCR01204 | U,BSH | ||
| 5 | 2.5 | C10,C7,C5 | R | 1 | SCR01205-A | V,U,BSH,H,A | ||
| 10 | 2.5 | C10,C7,C5 | R | 2 | SCR01210-B | V | ||
| 20 | 2.5 | C10,C7 | R | 4 | SCR01220 | Y | ||
| 14 | 2 | 1.2 | C10,C7,C5 | R | 1 | SCR01402 | K | 1800 |
| 4 | 2.5 | C10,C7 | R | 1 | SCR01404 | BSH | 3000 | |
| 16 | 4 | 2.381 | C10,C7,C5 | R | 1 | SCR01604(N) | V,I,U,BSH | 3000 |
| 5 | 3.175 | C10,C7,C5 | R/L | 1 | SCR01605 | V,NI,NU,BSH | ||
| 10 | 3.175 | C10,C7,C5 | R | 2 | SCR01610 | V,NI,NU,BSH | ||
| 16 | 2.778 | C10,C7,C5 | R | 4 | SCR01616 | Y | ||
| 32 | 2.778 | C10,C7 | R | 8 | SCR01632 | Y | ||
| 20 | 4 | 2.381 | C10,C7,C5 | R | 1 | SCR02004(N) | V,I,U | 3000 |
| 5 | 3.175 | C10,C7,C5 | R/L | 1 | SCR02005 | V,NI,NU,BSH,H,A | ||
| 20 | 3.175 | C10,C7,C5 | R | 4 | SCR02020 | V,Y,H,A | ||
| 40 | 3.175 | C10,C7 | R | 8 | SCR02040 | Y | ||
| 25 | 4 | 2.381 | C10,C7 | R | 1 | SCR02504(N) | I,U | 6000 |
| 5 | 3.175 | C10,C7,C5 | R/L | 1 | SCR02505 | V,NI,NU,BSH,H,A | ||
| 10 | 4.762 | C10,C7,C5 | R | 1 | SCR02510-A | NI,NU,BSH | ||
| 10 | 6.35 | C10,C7,C5 | R | 1 | SCR02510-B | V | ||
| 25 | 3.969 | C10,C7,C5 | R | 4 | SCR02525 | Y | ||
| 50 | 3.969 | C10,C7 | R | 8 | SCR02550 | Y | ||
| 32 | 4 | 2.381 | C10,C7,C5 | R | 1 | SCRO3204(N) | V,I,U | 6000 |
| 5 | 3.175 | C10,C7,C5 | R/L | 1 | SCRO3205 | V,NI,NU,M,H,A | ||
| 10 | 6.35 | C10,C7,C5 | R/L | 1 | SCR03210 | V,NI,NU | ||
| 32 | 4.762 | C10,C7 | R | 4 | SCR03232 | Y | ||
| 64 | 4.762 | C10,C7 | R | 8 | SCR03264 | Y | ||
| 40 | 5 | 3.175 | C10,C7,C5 | R/L | 1 | SCR04005 | V,NI,NU,H,A | 6000 |
| 10 | 6.35 | C10,C7 | R/L | 1 | SCR04010 | V,NI,NU | ||
| 20 | 6.35 | C10,C7 | R | 2 | SCR04020 | V | ||
| 40 | 6.35 | C10,C7 | R | 4 | SCR04040 | Y | ||
| 80 | 6.35 | C10,C7 | R | 8 | SCR04080 | Y | ||
| 50 | 5 | 3.175 | C10,C7,C5 | R | 1 | SCRO5005 | V,H,A | 6000 |
| 10 | 6.35 | C10,C7,C5 | R/L | 1 | SCRO5010 | V,NI,NU | ||
| 20 | 9.525 | C10,C7 | R | 1 | SCR05020 | V | ||
| 50 | 7.938 | C10,C7 | R | 4 | SCR05050 | Y | ||
| 100 | 7.938 | C10,C7 | R | 8 | SCR050100 | Y | ||
| 63 | 10 | 6.35 | C10,C7,C5 | R | 1 | SCR06310 | V,NI,NU | 7000 |
| 20 | 9.525 | C10,C7 | R | 1 | SCR06320 | V,NU | ||
| 80 | 10 | 6.35 | C10,C7,C5 | R | 1 | SCR08010 | V,NI,NU | 7000 |
| 20 | 9.525 | C10,C7 | R | 1 | SCR08020 | V,NU | ||
Why Choose Maitu for Your Needs?
Engineering Excellence & Proven Track Record:
With over 12 years of specialized manufacturing experience (stemming from a 20-year legacy in Shanghai), Maitu has successfully delivered over 16,000 types of screw configurations. We don’t just sell parts; we provide motion control solutions backed by a history of serving 5,000+ global clients.
Zero-Backlash Precision with Double Nut Technology:
Our double nut rolled ball screws are engineered to eliminate axial backlash through selectable preload solutions. Unlike standard single nuts, our double nut configuration provides superior positional repeatability and enhanced rigidity, making them the optimal cost-effective alternative to expensive ground screws for C5-C7 precision requirements.
Superior Material Integrity & Surface Finish:
We utilize SCM435/SNCM220 high-carbon chromium steel, through-hardened to HRC 58-62. Combined with our precision cold-rolling technique and a surface finish of Ra ≤ 0.4 μm, our screws offer extended L10 fatigue life and a mechanical efficiency exceeding 90%, significantly reducing the Total Cost of Ownership (TCO).
Advanced Traceability via Self-Developed ERP:
Quality is a science, not a coincidence. Maitu utilizes a proprietary ERP system to track every stage of production—from raw material heat treatment to final dynamic testing. This ensures that every shipment complies strictly with ISO 3408 and JIS B1192 standards, providing our clients with full transparency and consistent quality.
FAQ
1. How does Maitu ensure the precision grade of a rolled ball screw compared to a ground one?
While ground screws are traditionally used for ultra-high precision, Maitu’s advanced cold-rolling technology combined with our Double Nut Preload System allows us to achieve C5 to C7 precision grades. This offers a high-performance solution with a significantly lower price point, ideal for automation and robotics where both accuracy and budget are critical factors.
2. Can you provide custom end-machining according to our specific CAD drawings?
Yes. We operate 10 specialized manufacturing lines equipped with high-precision CNC lathes specifically for custom end-machining. Whether your application requires specific snap ring grooves, keyed shafts, or threaded ends, we ensure the machining is concentric to the ball track to prevent vibration and premature wear.
3. What is the typical lead time for bulk orders and OEM customizations?
Thanks to our dual-factory setup in Suzhou and Dongguan, we maintain a high production capacity. For standard specifications, we carry a significant stock of rolled shafts. For OEM customizations, once the drawing is confirmed via our ERP-monitored workflow, we provide a streamlined production schedule to ensure timely delivery, even for high-volume orders.
4. How do you guarantee the quality and performance of the ball screws before shipping?
Every Maitu Double Nut Rolled Ball Screw undergoes a rigorous inspection protocol. This includes surface hardness testing, dimensional verification (ISO 3408 compliant), and smooth-run testing.
Ball Screw Nut Reference
For more details and other nut types, please contact us.
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