What Is a Ball Screw and How Does It Work?

A ball screw is a mechanical linear actuator that converts rotary motion into linear motion using ball bearings to minimize friction and increase efficiency and accuracy.

What Types of Ball Screws Do You Offer?

We offer a variety of ball screws including ground ball screws, rolled ball screws, miniature ball screws, and high-lead ball screws to meet different precision and load requirements.

How Do I Choose the Right Ball Screw for My Application?

Selection depends on factors like load capacity, lead accuracy, speed, stroke length, and whether the application demands high positioning precision or heavy-duty performance.

What Is the Difference Between Ground and Rolled Ball Screws?

Ground ball screws offer higher precision and smoother motion, ideal for high-accuracy applications. Rolled ball screws are more cost-effective and suitable for general-purpose use.

What Maintenance Is Required for a Ball Screw?

Regular lubrication is essential. Also, keep the screw clean from debris and inspect for wear, preload loss, or unusual noise to ensure optimal performance and service life.

Ball Screws and Nuts: Precision Engineered for Demanding Linear Motion

In high-stakes manufacturing, a single misalignment in your linear motion system can halt production lines or compromise machine accuracy. At YIDI Motion, we've spent years fine-tuning ball screws and nuts that deliver repeatable precision under heavy loads—without the downtime that plagues lesser components.

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Why Sourcing Ball Screws and Nuts Can Trip Up Even Seasoned Buyers

I've talked to dozens of procurement managers over the years who thought they'd nailed the supplier selection—until the first shipment arrived with preload inconsistencies or nuts that bound up under load. It's frustrating. One Midwest machine builder shared how a cheap import led to 48 hours of unplanned downtime, costing them thousands.

Common pitfalls? Lead times stretch from promised 4 weeks to 3 months. Specs look good on paper but fail dynamic load tests. And customs delays eat into your project timelines. For USA importers, Section 301 tariffs add another layer if sourcing isn't optimized.

Undisclosed backlash: Kills precision in CNC routers.
Material inconsistencies: CF53 or 40Cr steel that's not heat-treated properly warps over time.
Poor nut designs: Single-nut setups that can't handle moment loads without deflection.
Logistics blind spots: No clear FOB Shanghai vs. CIF LA terms upfront.

Pro tip from the floor: Always demand dynamic load ratings, not just static. And verify if they're using P1 or P5 accuracy grades—anything lower spells trouble for automation setups.

YIDI Motion Ball Screws and Nuts: Built to Outlast the Competition

We cut through that noise at YIDI Motion. Established in 2020 as part of Hebei YIDI Import & Export Trading Co., Ltd., our Shijiazhuang factory focuses solely on linear motion components. No distractions—just ball screws, nuts, linear guides, and actuators done right.

Our ball screws come in diameters from 12mm to 80mm, with leads pitched for high-speed or heavy-duty needs. Nuts? Flange, cylindrical, or end-supported types, all with internal ball recirculation that minimizes friction. Think C3 or C5 class bearings recirculating 2-4 times per turn for smooth travel.

What sets us apart is the preload control. We match nut and screw with axial play under 0.005mm, tested on German-imported grinders. No guesswork—each set ships with a test certificate.

Precision grinding in action at our 100-employee facility.

OEM and ODM? Standard. We've customized for US automation firms needing SFU16010 nuts with custom wipers for dusty shop floors. Lead times average 25-35 days, with express options via DHL for prototypes.

Ready for samples? Shoot us an email at adam@yidimotion.com with your specs—we'll sort a free test unit.

Technical Breakdown: Specs That Matter in Real Operations

Let's get into the details engineers care about. Ball screws transmit torque efficiently via load-bearing balls in helical grooves. The nut's return channels keep balls looping without escape—critical for zero-backlash performance.

Materials: Ground screws from SCM415 alloy steel, hardened to 58-62 HRC. Nuts in high-tensile steel or optional resin for lighter apps. Accuracy? We hit JIS C5-C10 rolled, or C3-C5 ground for servo-driven axes.

Standard Ball Screw Specs Table

Diameter (mm)	Lead (mm)	Dynamic Load (kN)	Accuracy Grade	Nut Type
16	5/10	12.5	C7	Flange
20	5/20	18.2	C5	Cylindrical
25	10/25	28.4	C3	Flange w/ Seal
32	10	42.1	C5	End-Supported
50	10/20	95.3	C7	Custom OEM

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These ratings come from real rig tests—60,000km travel life at rated loads. Compare to generic imports? Often half that before balls pit.

Where Ball Screws and Nuts Excel in US Manufacturing

CNC mills and lathes top the list. A 20mm ball screw with 5mm lead pushes Z-axis speeds to 50m/min without whip. Robotics arms use our double-nut setups for rigidity under torque.

Precision machining centers—repeatability under 0.003mm.
3D printers and laser cutters—low-friction for quiet operation.
Semiconductor handling—cleanroom-grade with low outgassing.
Medical devices—sterilizable nuts for surgical robots.
Heavy automation—80mm screws lifting 5-ton pallets.

One client in California retrofitted their gantry with our SFU2510 nuts. Travel smoothed out, servo currents dropped 15%. No more chatter marks on aluminum parts.

Inside YIDI's Shijiazhuang Factory: Capability You Can Count On

100 employees, 30% senior techs. We run Japanese Okuma grinders and German Zeiss CMMs for micron-level QA. Annual output? Over 50,000 screw sets, shipped to 50+ countries like the US, Germany, and Japan.

Certifications: ISO 9001:2015, CE marked for EU, RoHS compliant.

Exports to USA? Streamlined with Incoterms expertise—DDP to your door if needed. No middlemen.

Ball And Screw Manufacturer

Practical Installation: Avoiding Common Setup Errors

Mount the screw fixed-free or fixed-fixed based on buckling calc. Preload nuts with 3-5% of dynamic load—too much binds, too little backlashes. Align with dial indicator; 0.01mm/300mm runout max.

Lubricate with lithium grease every 500km or monthly. Watch for ball chatter—signals contamination. In dusty shops, add scrapers.

Warning: Never mix brands. Ball sizes vary, causing early failure.

Logistics: From Hebei to Your US Warehouse

FCL 20ft containers hold 8-10 tons. Air freight for urgent: 7-10 days to LAX. Duties? HS 8483.40 covers ballscrews—check your broker. We handle packing lists, COs for tariff relief.

Typical: 4 weeks sea to East Coast. Track via our portal.

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