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 Screw Ball Nut Supplier: Precision Linear Motion Components from YIDI Motion

Need reliable ball screws and ball nuts for your CNC setup or automation project? We've been shipping high-accuracy assemblies to buyers in the USA, Germany, and Japan since 2020. Ground or rolled, single or double nut—OEM customized to your specs.

Talk to our engineer now: +86 18134111662 | adam@yidimotion.com

Get Factory Quote

Common Risks When Sourcing Ball Screw Ball Nuts Overseas

Procurement managers know the drill. You spec out a 25mm ball screw with C5 accuracy for a new CNC mill, only to get parts that bind under load or arrive with uneven preload. Happens more than you'd think, especially with unvetted suppliers from Asia.

Lead times stretch from promised 4 weeks to 12. Quality slips—no proper grinding, weak end caps, or mismatched nuts that wear fast. Then there's customs: unexpected duties on non-compliant parts eat margins.

Quick observation from the field: Last quarter, a US importer called us after burning $8k on rejected rolled ball screws. Pitch errors were off by 20 microns. Switched to our ground series—problem solved.

Risk piles up with hidden costs. Freight surcharges. Rework labor. Downtime on your shop floor while machines sit idle. Importers tell us they lose 10-15% on deals gone bad like this.

Accuracy drift: Cheap nuts lose preload after 500 hours.
Material flaws: Low-grade steel cracks under vibration.
Logistics delays: No tracking, parts vanish in transit.
No support: Supplier ghosts you post-sale.

We've seen it all. That's why YIDI Motion focuses on transparency upfront. Full specs verified before ship.

See How We Fix This

Precision Ball Screw and Ball Nut Assemblies: Built for Demanding Applications

Ball screws convert rotary motion to linear with minimal friction—up to 90% efficiency. The ball nut is the heart: recirculating balls under preload for zero backlash. We stock SFU/DFU series in diameters 16-80mm, leads from 5-20mm.

Our ground ball screws hit C3-C7 accuracy. Rolled options for cost-sensitive builds hold C10 steady. Materials? SCM415 or SCM440 chrome-moly steel, hardened to 58-62 HRC. Nuts in engineering plastic or bronze for low noise.

Precision ground ball screw and ball nut

Key Advantages Over Standard Suppliers

Custom preload: Light, medium, heavy—matched to your dynamic load.
End treatments: Whipped, machined, or flange journals.
Dust seals standard: Keep contaminants out in dirty shops.
Critical speed calc included: No whips at high RPM.

Series	Dia (mm)	Lead (mm)	Accuracy	Max Load (kN)
SFU1605	16	5	C7	12.5
SFU2005	20	5	C5	18.2
DFU2510	25	10	C3	28.4
SFU3216	32	16	C7	42.1
Custom	16-80	5-32	C0-C10	On Request

ball screw and ball nut supplier ball screw ball nut manufacturer ball screw and ball nut manufacturer

Double nuts for preloaded setups eliminate play. Single nuts work fine for vertical lifts. We've machined specials up to 3m long—tested to 10g acceleration.

Buyers ask about lifespan. Under 5m/s, expect 20,000-50,000km before 0.1% wear. Depends on lube, though. We recommend EP grease every 100 hours.

Procurement tip: Always match nut flange to your mount. Mismatched bores lead to alignment headaches. Send us CAD—we verify free.

Request Custom Specs Sheet

Why Choose YIDI Motion as Your Ball Screw Ball Nut Supplier?

HEBEI YIDI IMPORT AND EXPORT TRADING CO., LTD—doing business as YIDI Motion—kicked off in 2020 with a tight focus on linear motion. Our 100-person team includes 30+ senior techs. Imported grinders from Germany, spline rollers from Japan. No shortcuts.

Output? 5,000+ ball screw sets monthly. Exports to 50+ countries: USA gets steady LCL shipments to LA and NY ports. OEM/ODM is our wheelhouse—branded for distributors, custom machined for integrators.

Certifications matter in procurement. ISO 9001:2015 across the board. CE marked for EU. RoHS compliant—no lead worries. Test reports ship with every order: hardness, roundness, lead error.

One-stop shop: Pair with linear guides, actuators, splines. Our engineers tweak designs for your torque needs. Seen projects where we shaved 20% weight off assemblies without dropping rigidity.

Short story: A Canadian robotics firm came to us after local prices doubled. We quoted landed cost 30% under—same C5 grade. They're on year two, zero failures.

Explore OEM Options

Where Our Ball Screws Excel: Industry Applications

CNC routers and mills top the list. 32mm leads handle rapid traverses up to 60m/min. Automation pick-and-place? Our low-friction nuts keep cycles tight.

Machine Tools: Spindle drives, Z-axis lifts. C3 accuracy holds tolerances.
Robotics: Joint actuators. Preloaded doubles for backlash-free motion.
Packaging: Fillers and sealers. High-speed, clean operation.
Medical: Scanner tables. Smooth, quiet with sealed nuts.
3D Printers: Large format builds. Rolled for budget.
Solar Trackers: Dual-axis slew. Weatherproof ends.

Vertical apps? Watch buckling. We calc slenderness ratio free. Horizontal runs need good alignment—misalign by 0.1mm, friction triples.

Practical Installation and Maintenance Advice

Mount the screw fixed-free or fixed-pivoted. Nuts slide on fixed bearings. Torque preload nuts to spec—overdo it, you crush balls.

Ball Screw 2505 Manufacturer

Alignment's key. Laser check parallelism. Lube ports face down. Initial run-in: Slow cycles with grease.

Warning: Skip wipers, dirt kills nuts in weeks. Our flanged nuts have them integral.

Maintenance? Grease every 50-200 hours based on speed. Monitor for chatter—early wear sign. Lifespan doubles with proper fill.

Ask for Install Guide PDF

Global Shipping from China: Fast, Trackable, Duty-Optimized

Shijiazhuang to USA: Air for samples (DHL, 3-5 days), sea LCL for volume (20-30 days to West Coast). 1m screws fit 20 units per carton.

We handle export docs: CO, packing list, fumigation if wood. HS code 8483.40—check your tariffs. Incoterms? FOB or CIF your call.

Tracked all way. Insurance standard. Bulk? Full 20ft container optimizes rates—400+ units.

Real talk: Avoid peak seasons (pre-Lunar New Year). We quote landed costs upfront.

What Procurement Pros Say

John M., Operations Manager, CNC Shop - Ohio, USA
"Quoted three suppliers. YIDI's C5 samples arrived perfect, preload spot-on. Saved 25% vs domestic. Second order in—repeat business."

Maria K., Procurement Lead, Automation Firm - Germany
"DFU32 nuts for robot arms. Lead time beat promise by a week. Test data matched claims. Strong partner now."