6702 Bearing: Precision Deep Groove Solutions for Demanding Applications
Reliable 15x24x4mm thin-section ball bearings for OEM, high-speed motors, RC models, and industrial automation. Wholesale export from Hebei YIDI factory.
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Sourcing Reliable 6702 Bearings Without the Headaches
In the world of precision components, few parts demand as much from suppliers as the 6702 bearing. We've shipped thousands of these 15mm ID by 24mm OD by 4mm wide deep groove ball bearings to operations across North America, Europe, and Asia. They're not flashy, but they keep high-speed motors spinning smoothly in RC drones, 3D printers, and automation rigs.
Procurement teams hit roadblocks all the time—lead times stretching weeks, inconsistent tolerances leading to failures, or suppliers vanishing after the first order. At YIDI Motion, we've seen it firsthand. Our Hebei factory runs dedicated lines for miniature and thin-section bearings like the 6702, pulling from Japanese and German CNC grinders to hit ABEC-5 precision every batch. No shortcuts.
Picture this: your operations manager calls late Friday because a prototype line is down. The old 6702 bearings seized under load, and your usual importer can't deliver until next month. We've turned that around for dozens of U.S. importers with air freight from Shijiazhuang in under 7 days. That's the edge when you're dealing with OEM runs or urgent rebuilds.
These bearings aren't generic stock. Chrome steel construction, double-shielded seals to keep grease in and contaminants out. They handle radial loads up to 0.95 kN dynamic, with speeds pushing 30,000 RPM in lubricated setups. But specs alone don't close deals. It's about fit—for your spindle, your budget, your timeline.
Over the past three years, export volumes for 6702 bearings have ticked up 25% from our logs, driven by drone makers and hobby-grade robotics. U.S. buyers especially lean on us for consistent quality without the MOQ bloat from big brands. One Midwest distributor cut their reject rate by half after switching—simple swap, real results.
We're not here to hype. Bearings fail from misalignment or poor lube more than material flaws. That's why our tech sheets include torque specs and preload advice. Skip the guesswork; we've got engineers who've torn down failed assemblies from competitors.
If you're scouting for wholesale 6702 bearings, OEM customization, or just need 500 units fast, drop us a line. We've handled pallets to Germany same-week, and FOB Tianjin terms keep landed costs competitive. Let's talk specs that match your build.
Deep Dive: Engineering Behind the 6702 Bearing
Start with the basics. The 6702 is a metric deep groove ball bearing, ISO 15x24x4 designation. Thin-section design means low friction and weight—critical for high-RPM apps where every gram counts. Inner ring bores to 15mm shaft, outer fits 24mm housings, all in just 4mm radial space.
Material? GCr15 chrome steel, hardened to 58-62 HRC. Balls are grade 10, cages stamped steel or optional phenolic for higher speeds. Seals are ZZ-type metal shields, non-contact to minimize drag. Open versions exist, but most procurement calls for shielded to cut maintenance.
| Parameter | Value |
|---|---|
| Bearing Number | 6702 ZZ / 6702 2RS |
| Dimensions (d x D x B) | 15 x 24 x 4 mm |
| Dynamic Load (Cr) | 950 N |
| Static Load (Cor) | 365 N |
| Max Speed (Grease) | 22,000 RPM |
| Max Speed (Oil) | 30,000 RPM |
| Weight | 7.5 g |
| Precision Class | ABEC-1 / P0 standard, ABEC-5 optional |
Tolerances? Radial runout under 5 microns standard. We've run vibration tests in-house—most lots hit Z1V1 noise levels, quiet enough for dental tools or precision pumps. Production workflow: bar stock rough-turned, heat-treated, ground on Okuma grinders, auto-assembled with vision inspection. Yield over 98% before packing.
Common pitfalls? Over-greasing kills speed ratings. Use light NLGI 2 lithium grease, about 10% fill. Preload matters too—too loose, vibration; too tight, heat buildup. Our samples come with torque charts for your press-fit.
Where 6702 Bearings Thrive in the Field
High-speed electric motors top the list. Think RC car hubs hitting 50,000 RPM bursts—6702 handles the radial hits without whip. Drone gimbals next; low profile keeps payloads light.
- 3D printer steppers: Smooth Z-axis motion, reduced cogging.
- Inline skate bearings: Wait, no—these are too small; better for skate cameras or wearables.
- Industrial: CNC spindles under 1kW, textile shuttles, medical pumps.
- Consumer: Power tool chucks, fishing reel drags.
One U.S. robotics firm uses them in delta pickers—cycle times dropped 15% post-swap from cheaper no-names. Heat's the enemy in enclosed housings; pair with ceramic hybrids if temps push 120°C.
6205 bearing 6208 bearing 6901 bearing
Logistics note: These pack tight. 10,000 units per carton, 20 cartons per pallet. FCL from Tianjin to LA in 25 days sea, DHL for samples 3-5 days.
Smart Procurement: How to Source 6702 Bearings Right
Buyers mess up on MOQs first. Some factories demand 5,000-unit runs—we start at 100 for samples, 1,000 for production. Price? $0.80-$1.50 USD each at volume, depending on seals and tolerance.
Check certifications: Our ISO 9001:2015 covers the line, RoHS compliant for EU. No heavy metals, full traceability via batch codes. Avoid Alibaba randos—ask for CMM reports.
- No radial play specs listed.
- Prices under $0.50—likely pot metal.
- Lead times over 45 days without stock proof.
- Vague on grease type or speed ratings.
For OEM/ODM: We mark your logo, tweak cages for custom loads. Lead time 25 days post-tooling. Importers love our one-stop—pair 6702 with ball screws or linear guides from the same factory.
Want a shipping plan? Email adam@yidimotion.com with your volumes—we'll quote FOB/CIF, incoterms sorted.
Feedback from Repeat Buyers
Mike R., Procurement Lead, Texas Robotics Firm
"Switched to YIDI's 6702 after SKF stock dried up. Tolerance held on high-speed tests, no DOA in 2k units. Air ship was prompt—saved our prototype run."
Sarah L., Ops Manager, California Drone Maker
"Competitive pricing, and the ZZ shields lasted longer than expected in dusty environments. Ordered 5k last month; factory tour convinced us for annual contract."
Tom K., Distributor, Ontario Canada
"MOQ flexibility won us over. Bearings run cooler than previous supplier, better for our RC clients. Logistics smooth via Vancouver port."
Carlos M., Engineer, Florida Automation
"ABEC-5 upgrade was spot-on for our spindles. Vibration low, speeds stable. Samples arrived in 4 days—now standard in our BOM."
Buyer FAQs on 6702 Bearings
What's the difference between 6702 ZZ and 2RS?
ZZ are metal shields, non-contact for max speed. 2RS rubber seals, better contamination resistance but 10-15% drag penalty. ZZ for clean/high-RPM, 2RS for dirty environments.
Can you do custom preload or ceramic balls?
Yes, hybrids with Si3N4 balls for 150°C+ or electrical insulation. MOQ 500, add 20% to cost. Preload via spacer rings, spec your axial load.
Lead times for wholesale orders?
Stock: 1-2 weeks. Production: 3-4 weeks. Rush air: 7 days from wire transfer.
Do you offer samples?
Free for 5-10 pcs on first order over 1k commitment. Paid otherwise, $5/set refunded on volume buy.
Compatible with which shafts/housings?
h6/g6 shafts, H7 housings standard. E6X3 for light press. Full fit charts in our catalog.
Why YIDI Motion for Your 6702 Bearings?
100-employee team in Shijiazhuang, 30% senior techs. German/Japanese equipment, exports to 50+ countries. ISO 9001, RoHS, full OEM/ODM.
Products beyond bearings: ball screws, linear guides, actuators—one-stop linear motion.
Ready to Source 6702 Bearings?
Get factory-direct pricing, samples, or custom quotes today.
HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD. | 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China
+86 18134111662 | adam@yidimotion.com
About the Author: Alex Chen, Export Director at YIDI Motion. 12 years in bearing manufacturing, handled 10k+ tons exported to USA/EU. Focus: OEM linear motion solutions.
