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 Nut Assemblies: Precision Engineered for High-Load Linear Motion

Sourcing reliable ball screw nut assemblies? We've handled thousands of orders for US importers facing tight tolerances and aggressive lead times. YIDI Motion delivers OEM-grade components straight from our Hebei factory.

Get Factory Quote Today – Ships to USA

About the Author

Adam Li, Export Director at YIDI Motion. With 12 years in linear motion exports, I've coordinated over 500 container loads to North America. From spec tweaks for CNC upgrades to full OEM runs, I've seen what procurement teams really need.

Common Procurement Risks When Sourcing Ball Screw Nut Assemblies

Procurement directors know the drill. You spec out a ball screw nut assembly for a new automation line, only to hit delays from poor lead accuracy or premature wear. Happens more than you'd think, especially with unvetted suppliers.

In my years shipping to US machine builders, I've fielded calls about nuts binding under load. Often traces back to inconsistent ball recirculation or subpar preload. One importer in Ohio lost two weeks debugging a batch that deviated 0.01mm beyond tolerance.

Then there's logistics. Overseas orders stuck in customs because of missing RoHS declarations or mismatched INCOTERMS. We've seen 20-30% cost overruns from rushed air freight when factories underpromise on ETAs.

Lead Time Traps: Factories quoting 15 days but delivering in 45. Factor in sea freight to LA port – that's 6-8 weeks total.
Quality Drift: Ground screws that warp after 5000 hours. Without C3/C5 dynamic ratings verified, downtime skyrockets.
Custom Mismatch: OEM requests for flanged nuts ignored, forcing redesigns on your end.
MOQ Pressure: Suppliers pushing 100-unit minimums when you need 20 for prototyping.

ball screw and nut assembly ball screw assembly wholesale ball screw and nut

These aren't hypotheticals. They're pulled from real RFQ feedback. Skipping due diligence here can balloon project costs 15-25%.

Short story: Vet your supplier like you'd audit a critical path component. Check their grinding tech, ball diameter consistency, and export track record to the States.

YIDI's Ball Screw Nut Assemblies: Built to Cut Those Risks

Our ball screw nut assemblies start with precision-ground shafts from SCM415 or SFU-grade steel. Nuts feature internal ball recirculation channels machined to DIN 69051 standards – no shortcuts.

We handle everything from standard SFU1606 to custom high-helix designs for 50m/min speeds. Preload options? Fixed or adjustable, with dynamic load ratings up to 15kN. That's real-world capacity for pick-and-place robots or CNC gantry axes.

What sets us apart? Integrated dust wipers and optional end caps. Keeps contaminants out longer than basic designs. Many US ops report 20-30% longer service intervals in dusty shops.

Key Advantages at a Glance:

Accuracy grades C5-C7 standard; C3 on request. Lead error under 12µm/300mm.
Materials: Hardened to 58-62 HRC, corrosion-resistant coatings available.
Ball diameters from 3.175mm to 9.525mm – optimized for your friction/ load balance.
OEM/ODM flexible: Engrave your logo, tweak flanges for direct machine mount.

One practical note: For vertical apps, we recommend our single-nut designs with anti-backlash. Pairs well with our linear guides for zero play setups.

Request Custom Specs – Free Engineering Review

Inside YIDI Motion: Our Hebei Factory Strengths

YIDI Motion kicked off in 2020, but our core team brings 20+ years from bigger linear motion outfits. 100 employees, 30% senior techs. We run German-imported grinders (Bosch) and Japanese CNC lathes (Okuma) for micron-level consistency.

Annual output? Over 50,000 ball screw sets. Exports hit 50+ countries – Germany, USA, Canada top the list. We've shipped 20ft containers weekly to Long Beach without a single return claim.

Certifications aren't wall decor. ISO 9001:2015 audited yearly. CE marked for EU routes, RoHS compliant for electronics integrators.

Factory Capability	Details
Grinding Precision	C0-C10 grades, planetary and centerless methods
Heat Treatment	Induction hardening + vacuum quenching
Assembly Line	Automated ball loading, 100% preload testing
Capacity	Dia 8-80mm, lengths to 6000mm
Lead Time	Stock: 3-7 days; Custom: 20-30 days

Address: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang City, Hebei Province, China. Phone: +86 18134111662. Email: adam@yidimotion.com.

Technical Specifications Table

Here's a snapshot of our popular ball screw nut assemblies. Full catalog on request – tailored to your pitch, load, and speed.

Ball And Screw Supplier

Model	Nut Type	Dia x Lead (mm)	Dyn Load (kN)	Accuracy
SFU1204	Flanged	12x4	4.2	C7
SFU1605	Single	16x5	6.5	C5
SFU2005	Double	20x5	9.3	C5
SFU2505	Flanged	25x5	12.8	C3 opt.
Custom	Any	Up to 80x20	50+	C0-C10

Need CAD files? We supply STEP/IGES for SolidWorks integration. Tolerance callouts match ANSI B5.54 where required.

Applications Where Our Assemblies Excel

CNC mills. Robotic arms. Semiconductor wafer handlers. Anywhere linear precision meets heavy cycling.

Take packaging lines: Our SFU2510 nuts handle 10g accelerations without whip. Or medical device assembly – low noise, high repeatability.

Automation: XY tables, Z-axis lifts.
Machining: Spindle positioners, tool changers.
3D Printing: Large-format gantries.
Testing: Material fatigue rigs.

Vertical installs? Add our coupling joints to damp vibes. Horizontal? Belt-driven setups pair seamlessly.

Practical Installation & Maintenance Insights

Mounting's straightforward. Align shaft ends to 0.02mm parallelism. Torque nut flanges to 20-50Nm – specs per size.

Grease with lithium-based every 100 hours initially, then 500. Wipe balls weekly in harsh environments. Watch for pitting – signals overload.

Pro tip: Use our end-supported designs for spans over 2m. Reduces deflection by half vs. cantilever.

Logistics note: We pack in foam-lined crates, 200 units per 20ft FCL. DDP to US borders, duties included on request.

Feedback from US & Global Buyers

"Switched to YIDI for our CNC retrofit. C5 accuracy held up – no rebinds after 10k cycles. Lead time beat quotes by a week."
– Mike R., Operations Mgr, Ohio Automation

"Custom flanged nuts for robot arm. OEM branding perfect. Shipped DHL sample first – integrated day one."
– Sarah K., Procurement Lead, Texas Robotics