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.

Bearing OEM Manufacturing: Precision Custom Solutions from China's Leading Factory

By Adam Li, Export Director at YIDI Motion
15+ years in precision bearing production and global OEM supply

Quick SEO Notes (for webmasters):
Bearing OEM Supplier | Custom Ball Bearings Manufacturer China - YIDI Motion
Meta Description: Reliable bearing OEM factory offering custom precision ball and roller bearings. OEM/ODM services, ISO certified, fast prototyping for machinery, automotive, industrial applications. Get factory quotes today.

1. Why OEM Bearing Procurement Often Goes Wrong
2. Our Custom Bearing Solutions That Deliver
3. Inside YIDI Motion's Factory Capabilities
4. Technical Specifications and Customization Options
5. Real-World Applications and Case Examples
6. Logistics, Lead Times, and Shipping Realities
7. Buyer FAQs on Bearing OEM Sourcing
8. What Our OEM Clients Say
9. Next Steps: Get Your Custom Quote

Why OEM Bearing Procurement Often Goes Wrong – And How to Avoid It

Procurement managers hit roadblocks all the time when sourcing bearing OEM partners. I've seen it firsthand over 15 years exporting to the US, Europe, and beyond. You start with a spec sheet for, say, deep groove ball bearings in chrome steel, DIN 625 tolerances. Quotes roll in cheap from unverified suppliers. Lead times sound great – 15 days. Then reality bites.

Parts arrive with vibration issues under load. Or surface finishes that chew up mating shafts after 6 months. Tolerances off by microns lead to premature failure in high-speed spindles. And don't get me started on logistics: containers delayed in customs because certifications weren't squared away. Suddenly your production line stalls, costing thousands per day.

One US importer told me last year they'd burned $50k on a bad batch of angular contact bearings for CNC machines. The supplier cut corners on heat treatment, and radial play exceeded specs. We replaced them at no cost after auditing – but that trust rebuild took months.

Common pitfalls? Over-relying on Alibaba listings without factory audits. Ignoring material traceability – like 52100 chrome steel vs. cheaper GCr15 knockoffs. Skipping preload testing for paired sets. Or chasing the lowest MOQ without scalability in mind for volume ramps.

Risk piles up fast in cross-border deals. Currency fluctuations hit margins. IP concerns if you're rebranding OEM parts. Quality fade after initial orders as factories chase output over precision.

Here's the operational truth: 70% of bearing failures tie back to improper spec matching or manufacturing variances. That's from field reports across automotive and machinery sectors. Buyers need partners who get the full lifecycle – not just spit out parts.

Short sentence: We do.

At YIDI Motion, we've shipped over 1 million bearing sets since 2020. No drama. Just reliable OEM output. Our edge? In-house metrology labs matching ABEC 5P standards. And engineers who speak your language – literally, with US market experience.

Want to skip the headaches? Request a free spec review from our team. Email adam@yidimotion.com with your drawing or part number.

Our Custom Bearing Solutions That Actually Perform

Bearing OEM isn't cookie-cutter. Your application dictates everything – from inner ring bore to cage design. We handle full custom runs: miniature bearings for drones down to heavy-duty spherical rollers for mining gear.

Take deep groove ball bearings, our bread-and-butter. We machine them in 6000-6200 series, stainless 316 or ceramic hybrids for corrosive environments. Seals? Contact rubber or metal shielded. Lubrication matched to speeds – high-temp grease for 150°C ovens, or dry lube for food-grade lines.

Precision angular contacts for pumps? Preloaded duplex pairs, axial stiffness tuned to your thrust loads. Tapered rollers for wheel hubs – inch or metric, with optimized cone angles to cut friction losses.

What sets us apart operationally? Vertical integration. We forge blanks in-house, grind races on Japanese-imported Okuma grinders, assemble under cleanroom Class 1000. Superfinishing reduces noise by smoothing micro-burrs – critical for spindle tools running 20,000 RPM.

Customization runs deep. Hybrid ceramic balls boost life 5x in contaminated oil. PEEK cages for chemical resistance. Even custom markings for your brand – no upcharges for low volumes.

Dynamic load ratings from 5kN to 500kN per bearing.
Tolerances: P0 to P4, or ABEC 1 to ABEC 7.
Materials: AISI 52100, 440C stainless, Si3N4 ceramic.
Specials: Thin-section, corrosion-proof coatings, integrated sensors.

Buyers appreciate our prototyping speed. Send a SolidWorks file; we quote in 24 hours, sample in 10-15 days. Scales seamlessly to 10k/month production.

Practical note: Always factor in mounting fits. We advise H7/g6 for shafts – avoids fretting. Misalignments kill bearings faster than you think.

Talk specs with an engineer now – WhatsApp +86 18134111662.

Inside YIDI Motion's Factory: Built for OEM Scale

HEBEI YIDI IMPORT AND EXPORT TRADING CO., LTD. – that's us, operating as YIDI Motion since 2020. Not a trader. A real factory in Shijiazhuang, Hebei, with 100 staff. 30% senior techs from state-run bearing giants.

Equipment? German Hermle 5-axis for complex housings. Japanese Sodick wire EDM for prototypes. Full CMM suite – Zeiss Contura for micron-level QA. Heat treat in vacuum furnaces to spec hardness 58-62 HRC, no decarb.

Certifications matter in OEM. ISO 9001:2015 audited yearly. RoHS compliant. REACH for EU. We prep TS16949 docs for automotive bids – full PPAP Level 3 support.

Factory Snapshot:

15,000 sqm facility, 5 production lines.
Annual output: 2M+ bearings.
Export to 50+ countries: USA, Germany, Japan top.
One-stop linear motion: Bearings + ball screws, guides.

Our mission? Innovation, quality, reliability. Translated: No batch rejects over 0.5%. Traceability via QR codes back to raw bar stock. Clients like US robotics firms re-order quarterly because uptime beats specs.

Bearing Company

Address: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang City, Hebei Province, China.

Bearing OEM Technical Specifications Table

Bearing Type	ID (mm)	OD (mm)	Width (mm)	Load Rating (kN)	Max Speed (RPM)	Customization
Deep Groove 6205	25	52	15	C:14 / Co:7.8	14,000	Ceramic, sealed
Angular Contact 7205	25	52	15	C:12.5 / Co:6.7	18,000	Duplex preload
Tapered Roller 30205	25	52	16.25	C:22.5 / Co:22	12,000	Metric/inch
Spherical 22305	25	62	24	C:53 / Co:47	8,000	Self-aligning

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*All specs per ISO 15:2011. Custom sizes on request. Full catalog available.

Applications: Where Our OEM Bearings Excel

Machinery OEMs love our bearings for reliability under duress. Automotive: Wheel hubs, transmissions – tapered rollers handle shock loads. Robotics: Thin-section for lightweight arms, low friction.

Food processing? Stainless with NSF-H1 grease. Pumps and motors: Angular contacts for combined loads. Wind turbines: Large sphericals with extended life projections.

Case: Texas CNC shop switched to our 6900 series minis. Cut spindle downtime 40%. No numbers fudged – their words.

Logistics and Lead Times: No Surprises

FOB Xingang port. Samples: DHL 3-5 days to USA. Production: 20-30 days post-tooling. Full container: 40ft holds 20 tons bearings.

Incoterms flexible: EXW, CIF. Duties? We provide clear HS codes (8482.10). Track via sea/Air.

Warning: Peak season (Q4) books fast. Lock in now.

Get a tailored shipping plan – contact us.

Bearing OEM Buyer FAQs

Q: What's your MOQ for custom bearings?
A: 100 pcs prototype, 500+ production. Scales down for standards.

Q: Can you match SKF/FAG specs?
A: Yes, reverse-engineer or exceed. Full interchange data.

Q: Lead time for ODM redesign?
A: 4-6 weeks with your input.

Q: Pricing structure?
A: Tiered. $2-50/unit based on complexity. Volume discounts 20%+.

Q: Returns policy?
A: 100% if specs fail. We've issued none in 2 years.

What Our OEM Clients Say

John M., Procurement Mgr, Texas Robotics Firm
"Switched from domestic supplier. YIDI's angular contacts run cooler, quieter. Prototypes nailed first pass. Delivery on point."

Marie K., Ops Director, German Machinery OEM
"Custom deep grooves for our presses. ISO docs perfect for audit. Cost 25% under Euro quotes, quality matched."

David R., Supply Chain Lead, US Auto Parts
"Tapered rollers for hubs – no brinelling issues after 10k cycles. Team communicates daily via email."

Sarah L., Project Engineer, Canada Wind Tech
"Sphericals handled misalignment perfectly. Samples free, fast."