6903 2RS Bearing | Precision Sealed Deep Groove | Bulk OEM Supply from China
6903 2RS Bearing Wholesale | 17x30x7mm Sealed | YIDI Motion Factory Direct
Meta Description: Reliable 6903 2RS deep groove ball bearings for motors, pumps, machinery. Bulk export pricing, OEM customization, fast shipping to USA/EU. ISO certified factory. Get specs & quotes now.
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Sourcing Reliable 6903 2RS Bearings Without the Headaches
If you're hunting for 6903 2RS bearings in bulk, you know the drill. Tight deadlines. Spec mismatches from sketchy suppliers. And those hidden costs that eat into your margins. We've been there with clients from automotive rebuilders to CNC shops across the US.
At YIDI Motion, part of Hebei Yidi Import & Export Trading Co., Ltd., we handle 6903 2RS as a staple. 17mm ID, 30mm OD, 7mm width. Double rubber sealed for dust and grease retention. Not flashy, but it gets equipment spinning smooth under load.
Established back in 2020, our Shijiazhuang base pumps out linear motion parts—ball screws, guides, splines, and these bearings—for exporters worldwide. Over 50 countries now, including heavy hitters like Germany and the States. Senior techs make up 30% of our 100-person crew. German and Japanese gear keeps tolerances tight.
What sets us apart? One-stop linear motion sourcing. OEM tweaks? No problem. Need 6903 2RS with custom seals or preload? We spec it in-house. Procurement managers tell us they cut lead times by routing through us versus chasing multiple vendors.
Picture this: Your spindle motor fails mid-shift. Local stock's priced like gold. Overseas? Weeks away. We've shipped 6903 2RS pallets to Texas ports in under 20 days. Door-to-factory reliability. That's the edge when ops demand uptime.
Scroll down for the nitty-gritty. Or skip to request factory pricing if you're ready to move.
Shifts in the Deep Groove Bearing Space
Deep groove bearings like the 6903 2RS aren't new. But demand's spiked with automation ramps. Think electric motors in EVs, compact pumps for HVAC, or actuators in robotics. US importers report 20-30% yearly upticks in mini-bearing orders under 20mm bore.
Supply chains got rattled post-2020. Lead times ballooned. Now, buyers prioritize factories with vertical integration. We machine our own races and cages. No sub-tier delays. Clients switching from Taiwan or India note steadier quality here.
Sealed variants rule for maintenance hate. 2RS means double lip seals—rubber, not metal. Grease stays in. Contaminants out. In humid plants or dusty shops, that alone slashes downtime.
ROI angle? Swap open bearings for 2RS types, and relube intervals stretch 2-3x. Not hype—straight from field reports. But pick wrong grease fill, and you bake it at startup. More on that later.
What Makes Our 6903 2RS Stand Out
Standard deep groove. But executed right. Chrome steel GCr15 construction. Heat-treated for 60-62 HRC hardness. Dynamic load around 4.2kN. Static 2.24kN. Speeds to 16,000 RPM greased.
Seals? Nitrile rubber. Temp tolerant -30 to 110°C. Low friction drag. We've tested batches in-house—torque stays under spec even after 500 hours.
| Parameter | Value |
|---|---|
| Bearing Type | Deep Groove Ball, Double Sealed (2RS) |
| Dimensions | 17x30x7 mm |
| Material | GCr15 Chrome Steel |
| Dynamic Load (C) | 4.2 kN |
| Static Load (C0) | 2.24 kN |
| Max Speed (Grease) | 16,000 RPM |
| Weight | 0.018 kg |
| Clearance | C3 Standard (Custom Available) |
Compare to generics: Ours hold ABEC-3 precision. Tolerances ±5 microns on bore. Vibration low. Noise minimal. For OEMs, that's press-fit heaven.
- Grease: Lithium-based, NLGI 2. Good for most apps.
- Vibration: Z1 standard.
- Certifications: ISO 9001, RoHS compliant.
Custom? Add shields. Ceramic balls for high-speed. We quote per run.
Installation Realities from the Field
6903 2RS drops into most housings easy. But rush it, and seals tear. Heat the housing to 80°C max. Press arbor slow. Arbor dia: 17.00 to 17.02mm.
We've seen motors seize from misalignment. Shim if needed. Torque bolts to spec—overtighten spins the outer.
- Clean shaft and bore. No burrs.
- Lube lightly if repacking.
- Align radially. Use dial indicator.
- Run-in at low speed. Listen for grinds.
Maintenance? Wipe externals quarterly. No full strip till 5,000 hours. If it hums, it's happy. Hot environments? Check grease bleed yearly.
Contractors in Ohio fabs tell us these outlast SKF imports in washdowns. Seals hold.
Smart Procurement for 6903 2RS
Risks abound. Off-spec bore? Vibration city. Fake seals? Early failure. Vet suppliers on factory audits, not brochures.
- MOQ: Starts 500pcs. Scales down for samples.
- Lead: 15-25 days production + ship.
- Pricing: Drops 25% over 10k units.
- Test reports: Included free.
Compare table:
| Supplier Type | Lead Time | Cert Quality | Customization |
|---|---|---|---|
| YIDI Factory | 15-25 days | ISO/RoHS | Full OEM |
| Alibaba Trader | 30-60 days | Varies | Limited |
| US Distributor | Stock | High | None |
Want a shipping plan? Hit us up.
Getting 6903 2RS to Your Door—US Focus
Sea to LA/Long Beach: 20-30 days FOB. Air for urgency: DHL/FedEx, 5-7 days. Palletize 5k units per carton. 20ft container fits 1.2M pcs.
Duties? HS 8482.10. Low tariff. We handle docs: CO, packing list, fumigation if wood.
Tracked every step. Last US client got 10k units Houston cleared smooth. No holds.
Pro tip: Consolidate with ball screws for full loads. Saves 15% freight.
Behind Our 6903 2RS Production
100 employees. 30% engineers. Japanese grinders, German heat treats. Full traceability—lot codes to raw stock.
OEM/ODM? We badge for your brand. Matched GE or Shell specs. 
Exports to Japan mean tight QC.
Contact: +86 18134111662 | adam@yidimotion.com | Full Details
Addr: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China
Where 6903 2RS Thrives
Motors. Fans. Gearboxes. Precision tools. Food conveyors (seals pass wash). Even drones.
Engineering note: Pairs well with our ball splines for linear actuators.
Feedback from Procurement Pros
John M., Ops Manager, Texas CNC Shop"Ordered 5k 6903 2RS. Arrived perfect. No DOA. Pressed right into spindles. Beats local pricing by 40%."
Maria G., Supply Chain, Ohio Pump Maker"Seals held in wet tests. Custom C4 clearance on request. Lead time spot on. Will reorder."
Raj P., Importer, California Robotics"Bulk pallet to LA port. Docs flawless. Quality consistent batch to batch. Good partner."
"Integrated with linear guides. Smooth runs. No complaints from assembly."
Buyer FAQs on 6903 2RS
What's the max temp for 6903 2RS seals?
-30°C to 110°C continuous. Short peaks 120°C.
C3 vs CN clearance—which for my app?
C3 for expansion. CN baseline.
Sample policy?
10-50 pcs free with order commitment.
OEM minimum?
1k pcs for mods.
US shipping costs?
Quote per volume. Sea economical over 5k.
Ready for 6903 2RS Quotes?
No obligations. Factory direct savings. Talk specs with our engineer.
Lower risk. Proven supply. Let's build your next run.
Adam Li
Export Director, YIDI Motion
15+ years in bearing export to Americas/EU. Hands-on from shop floor to container yard.
