30x42x7 Ball Bearing 6806: Factory-Direct Precision for Demanding Applications
Sourcing the right 30x42x7 ball bearing 6806 shouldn't turn into a procurement headache. We've seen it too often—buyers chasing cheap imports that fail under load, or waiting weeks for backordered stock from overseas middlemen. At YIDI Motion, we cut through that. Our Hebei factory ships these thin-section deep groove ball bearings straight to operations managers in the USA, Canada, and beyond. Dimensions locked at 30mm ID, 42mm OD, 7mm width. Model 6806. Built for high-speed rotation in compact setups like CNC spindles, electric motors, and precision robotics.
Picture this: your production line grinding to a halt because a supplier's "premium" bearing seizes after 500 hours. Happens more than you'd think in automation rigs. That's why we prioritize GCr15 steel chromed up for durability, with super-finished raceways that handle radial loads up to 4.45 kN dynamic. We've shipped thousands to US integrators facing tight tolerances. No fluff—just bearings that spin true at 10,000 RPM without chatter.
Established back in 2020, YIDI Motion isn't some trading shell. We're hands-on with 100 staff, over 30% senior techs dialing in processes on German and Japanese import machines. Bearings like the 6806 ZZ or 6806 2RS come off our lines with ISO 9001 stamps, ready for your OEM builds. Exporting to 50+ countries means we know the drill: compliant packaging, DHL/FedEx options, and quotes that factor real freight rates from Shijiazhuang.
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Thin-Section Bearings on the Rise: Why 6806 Demand is Surging
Automation boom hits hard. US manufacturers squeezing more axes into smaller footprints. That 30x42x7 profile? Perfect for stepper motors in 3D printers or spindle heads on desktop mills. We've noticed orders spiking from Texas machine shops retrofitting legacy gear. No surprise—radial clearance C3 keeps things quiet under variable speeds.
Supply chain snarls post-2022 pushed buyers toward China direct. But not all factories deliver. Ours does. With ball screws and linear guides in the same shop, we bundle 6806s with mates for your linear motion kits. Saves you juggling vendors.
Procurement tip: Skip Alibaba roulette. Request our engineering drawing pack first. Confirms bore chamfers match your shafts.
What Sets Our 30x42x7 Ball Bearing 6806 Apart
Start with the basics. Deep groove design swallows misalignment better than angular contacts in light-duty spots. Our 6806 runs non-contact seals or metal shields—ZZ for dry runs, 2RS for oiled enclosures. Heat-treated to 60-64 HRC, cages stamped steel or optional nylon for whisper-quiet ops.
- Load handling: Dynamic Cr 4.45 kN, static Cor 2.7 kN. Holds up in fan hubs or conveyor idlers.
- Speed ratings: Grease lubed to 19,000 RPM reference. Oil mist? Push 25,000.
- Tolerances: P0 standard, P6 on request for gauge block precision.
- Vibration: Z1V1 class means smoother than spec-minimum imports.
Not chasing every micron. But for procurement directors eyeing MTBF, these outlast generic SKF clones by 20-30% in field reports. We've torn apart returned units—minimal spalling even after 10,000 hours.
Customization? OEM stamp your logo. ODM tweak fill slots for specialty loads. Talk to our engineer via WhatsApp for viability.
6806 Ball Bearing Technical Specifications Table
| Parameter | Value | Details |
|---|---|---|
| Dimensions | 30x42x7 mm | ID/OD/Width exact |
| Weight | 0.041 kg | Light for high inertia sensitivity |
| Dynamic Load Cr | 4.45 kN | Basic rating |
| Static Load Cor | 2.7 kN | Basic rating |
| Max Speed (Grease) | 19,000 RPM | Reference |
| Limiting Speed (Oil) | 25,000 RPM | With relubing |
| Material | GCr15 Steel | Chrome alloy, hardened |
| Seals | Open / ZZ / 2RS | Rubber or metal |
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ABEC 1 precision standard. Matches DIN 620 tolerances. Compare to NSK or NTN—interchangeable drop-in.
Where 6806 Bearings Excel in Industrial Setups
Compact power. Slots into AC induction motors for HVAC fans. Or pair with ball splines in robotic arms—low friction keeps cycles tight.
US buyers love them for:
- CNC router spindles: High RPM without whip.
- Pump impellers: Handles axial float.
- Textile winders: Steady under tension variance.
- Medical devices: Quiet, sterile-compatible with 2RS.
- EV prototypes: Lightweight for drone motors.
One Midwest integrator swapped to our 6806s—cut vibration alerts by half. No exact numbers, but downtime dropped noticeably.
Practical Installation Insights for 6806 Bearings
Heat the housing to 80C max. Tap inner ring onto shaft with soft hammer—avoid prying. Press-fit tolerances: h6 for shaft, H7 housing typical.
Lube matters. Lithium grease NLGI 2 for starters. Relube ports if sealed wrong. Watch for fretting if idle long—spin monthly.
Warning: Undersized shafts cause brinelling fast. Check runout under 0.01mm. We've fixed plenty of field failures tracing back to that.
Maintenance? Ultrasonic clean yearly. Torque shields to 0.5 Nm. Lifespan stretches to 20,000 hours with clean environs.
Logistics from Hebei: Fast to Your Door
Stock 10,000+ pcs 6806 variants. Lead time: 3-7 days for samples, 15-25 for containers. DHL to USA: 5-8 days, $50-150 per kg.
FOB Tianjin. 20ft holds 50,000 pcs vacuum-packed. Duty? HS 8482.10, check your tariffs. We handle paperwork.
YIDI Motion Factory Capabilities
100 employees at 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang. Imported grinders from DMG Mori, Japan. Yield over 99% on 6806 runs.
Certifications: ISO 9001, RoHS compliant. No heavy metals. OEM for US brands—your specs, our lines.
Phone +86 18134111662. Visit contact page.
Frequently Asked Questions on 30x42x7 Ball Bearing 6806
- What's the difference between 6806 ZZ and 2RS?
- ZZ metal shields for high heat/speed. 2RS rubber seals for contamination resistance. ZZ cheaper.
- Can I get P5 precision?
- Yes, +10% cost. Lead +5 days. Suits high-end servos.
- Minimum order quantity?
- 50 pcs samples, 500 for production. Volume discounts kick at 5k.
- Interchange with SKF?
- Direct 6806-2RS1 match. Drop-in.
- Warranty?
- 12 months or 10,000 hours. Defective? Free replace + freight.
Customer Feedback on Our 6806 Bearings
Mike R., Operations Mgr, Texas CNC Shop: "Needed 2,000 6806 ZZ fast after supplier bailed. YIDI delivered in 12 days to Houston. Spun perfect—no noise in spindles. Pricing beat US distributor by 35%. Will reorder."
Sarah L., Procurement Lead, California Robotics: "OEM run with custom cages. Engineer Adam sorted tolerances quick. Quality matched NTN samples. Logistics smooth—DHL tracked daily."
John K., Supply Chain, Ontario Importer: "Bundled with linear guides. 6806 2RS held up in dusty winders. No failures first year. Solid partner."
Carlos M., Project Engineer, Florida Pumps: "Tested samples—load ratings spot on. Bulk order packed tight, no damage. Good comms throughout."
Ready for 30x42x7 Ball Bearing 6806?
Factory pricing starts under $2/unit. OEM quotes free.
+86 18134111662 | adam@yidimotion.com | Hebei YIDI – Your Linear Motion Partner
Written by Adam Lee, Export Director at YIDI Motion. 15+ years in bearing OEM. Last updated: 2026.
