Precision Bearings for Linear Motion Systems | OEM Supplier - YIDI Motion
Sourcing reliable bearings shouldn't turn into a procurement nightmare. At YIDI Motion, we've seen importers chase cheap options only to face downtime from premature failures. Our bearings, built for ball screws, linear guides, and actuators, deliver the consistency operations managers demand.
From Hebei's industrial heartland, we ship to U.S. warehouses, German machine builders, and Canadian distributors. Expect ABEC-5 tolerances, chrome steel races, and load ratings that hold up under real-world vibration.
Ready for factory-direct pricing? Email adam@yidimotion.com or call +86 18134111662.Quick Navigation
Common Pitfalls When Sourcing Bearings Overseas
Procurement directors know the drill. You spec out a deep groove ball bearing for your CNC spindle, but the supplier cuts corners on heat treatment. Suddenly, you're looking at spindle runout beyond 0.005mm, and production halts.
We've fielded calls from U.S. importers who ordered miniature bearings from unvetted factories. What arrived? Softened races after 500 hours, nowhere near the 10,000-hour B10 life they quoted. Lead times stretched from 4 weeks to 3 months due to raw material shortages.
Another headache: mismatched standards. A bearing rated for DIN 620 might not align with ABEC 3 needs in American servo motors. We've seen angular contact bearings fail preload tests because the exporter ignored contact angle specs.
- Undisclosed lead content in "low-cost" steel—hits RoHS compliance walls.
- Vague dynamic load ratings (C) that crumble under axial loads.
- No traceability for cage materials—nylon vs. brass makes a difference in high-speed apps.
Operations managers tell us container delays from Qingdao add 10-14 days unpredictably. And don't get started on customs holds for improper packing.
Short take: Skip the marketplace middlemen. Direct from a factory like ours cuts risks and costs.
YIDI Motion Bearings: Built for Reliability
Our lineup covers angular contact, deep groove, and thrust bearings optimized for linear motion. Take our 7200 series angular contact bearings—40-degree contact angle, machined brass cages. They handle combined loads in ball screw nuts without brinelling.
Chrome steel (GCr15) throughout, hardened to 58-62 HRC. We vacuum degas during quenching for purity levels that beat domestic grades. For corrosive environments, opt for our 440C stainless variants.
Customization? OEM runs start at 500 units. Swap seals for labyrinth designs, tweak inner ring tolerances to P4. We've tooled hybrid ceramic bearings for high-vacuum apps in semiconductor tools.
Buyers appreciate the one-stop angle. Pair with our linear guides or ball splines for full assemblies. Reduces your vendor juggling.
Inside Our Hebei Factory
HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD.—that's us, founded 2020. 100 employees, 30% senior techs. Imported Okuma grinders from Japan, DMG Mori CNCs from Germany. Keeps our ID/OD concentricity under 1 micron.
Assembly lines run cleanroom protocols for precision grades. Superfinishing on raceways hits Ra 0.08um. Full SPC tracking from bar stock to packing.
Exports hit 50+ countries: USA, Germany, Japan. Last year, shipped 20ft containers weekly to Long Beach. Our mission? One-stop linear motion parts. Bearings, ball screws, modules—all under one roof.
No smoke and mirrors. We stock common sizes like 6205, 7005CTY, ready for 2-week air freight if urgent.
Bearing Specifications at a Glance
| Model | Type | ID (mm) | OD (mm) | Width (mm) | Dynamic Load (kN) | Speed (RPM) |
|---|---|---|---|---|---|---|
| 6205 | Deep Groove | 25 | 52 | 15 | 14.0 | 14000 |
| 7005CTY | Angular Contact | 25 | 47 | 12 | 11.1 | 19000 |
| NU205 | Cylindrical Roller | 25 | 52 | 18 | 28.1 | 16000 |
idler bearing grooved bearing bearing use
All ratings per ISO 281. P4 tolerance available. Contact for full catalog.
Where Our Bearings Excel
Linear modules in pick-and-place robots. Spindles on 5-axis mills. Actuator carriages handling 500kg payloads.
CNC builders slot our 71900 series into high-speed spindles—minimal heat buildup at 20,000 RPM. Food processors grab stainless thrust bearings for washdown zones.
Semiconductor fabs? Ceramic hybrids reduce particle generation. Automotive jig builders rely on them for weld gun slides.
One importer noted: "Switched to YIDI angular contacts—vibration dropped, throughput up 15% without new motors."
Practical Installation Advice
Mount with hydraulic press only—no hammers. Preheat housing to 80C for shrink fits. Torque locknuts to spec; overdo it and you preload the life out of them.
Alignment matters. Shaft runout over 0.01mm per 100mm kills performance. Grease with lithium complex NLGI 2—pack 30% full, no more.
Warning: In dusty shops, add felt seals. We've debugged customer setups where contamination halved L10 life.
Global Shipping from China
FOB Xingang or CIF LA port. 20ft holds 15 tons. Air via DHL for prototypes—3 days to LAX.
Duties? Bearings classify under 8482.10, around 2.5% for US. We provide commercial invoices, packing lists, fumigation certs.
Lead times: Stock 2 weeks, custom 4-6. Track via our portal.
Certifications & Compliance
- ISO 9001:2015 – Quality management audited yearly.
- RoHS compliant – No heavy metals.
- REACH registered for EU markets.
- Material certs per ASTM F2215.
Full docs on request. Audits welcome.
What Buyers Say
Mark T., Procurement Mgr, Ohio CNC Shop: "Ordered 1000pcs 6204 bearings. Arrived perfect, ran 8000 hours no issues. Better than SKF at half price."
Anna K., Supply Chain, Toronto Automation: "Custom angular contacts for linear rails. Engineering support nailed the preload. Shipping on time despite port congestion."
Rodrigo S., Mexico Distributor: "Good value on bulk deep grooves. Local rep helped with specs. No complaints."
John D., Texas Fabricator: "Thrust bearings held up in hydraulic press. Fast samples sealed the deal."
Frequently Asked Questions
What tolerances do you offer?
P0 to P4 per ABEC 1 to 7. Most stock at ABEC 5.
Minimum order quantity?
50pcs for stock, 500 for OEM.
Can you do ODM?
Yes, full design from CAD to tooling.
Lead time for samples?
3-5 days air ship.
Payment terms?
T/T 30% deposit, balance B/L copy. L/C available.
Need Bearings Fast?
Request specs, samples, or a shipping quote. Our team responds in 24 hours.
Phone: +86 18134111662 | Email: adam@yidimotion.com
Address: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang City, Hebei Province, China
Start Your InquiryWritten by Adam Li, Export Director at YIDI Motion. 15+ years in linear motion exports. Last updated: 2026
Precision Bearings Manufacturer | Ball & Roller Bearings OEM - YIDI Motion
Meta Description: Reliable bearings for linear guides, ball screws & actuators. Factory-direct from China to USA. OEM/ODM, ISO certified, fast shipping. Request quote now.
