6306 Bearing Supplier
Deep Groove Ball Bearings | OEM Factory Direct | Bulk Export Worldwide
6306 Bearing: Reliable Deep Groove Performance for Machinery and Motors
Sourcing the right 6306 bearing shouldn't mean endless supplier hunts or quality gambles. We've shipped thousands to U.S. operations managers facing tight deadlines. Inner diameter 30mm, outer 72mm—standard size that fits pumps, fans, and conveyors without retooling.
Quick Inquiry: Need specs sheet or factory pricing? Email adam@yidimotion.com or call +86 18134111662. Samples ship in 3 days.
Page Contents
Understanding the 6306 Bearing in Industrial Operations
Procurement teams know the drill. A motor fails on the line, and suddenly you're scrambling for a 6306 bearing that matches exactly—no more, no less. This deep groove ball bearing has been a workhorse since the standards were set decades ago. Bore at 30mm, outside diameter 72mm, width 19mm. It's not flashy, but it spins smooth under load.
We see it daily in our Hebei factory. U.S. importers call because their previous supplier shipped soft steel that pitted after 6 months. Or European distributors hit with lead times stretching to 12 weeks. YIDI Motion cuts through that. Established 2020, but our core team brings 15+ years from bigger plants. We handle the full run—from raw chrome steel to packed pallets ready for FCL to Los Angeles or Hamburg.
Think about your setup. In electric motors, conveyor systems, or automotive alternators, the 6306 handles radial loads up to 26.7 kN dynamic. Static? 15 kN. That's per ISO specs, not hype. We've tested batches on German-imported grinders to confirm. No variances over 2 microns on raceways. Matters when vibration control keeps downtime low.
Market's shifting too. With supply chains still wobbly post-2022 disruptions, buyers want partners who stock consistently. We do—over 500,000 units in warehouse near Tianjin port. Not just 6306; pair it with our linear guides or ball screws for full assemblies. One importer from Texas bundled them last quarter, saved 18% on freight by consolidating.
But let's talk risks. Cheap imports from unverified mills? Often GCr15 steel that's poorly heat-treated. Ends up with spalling under heat. We use controlled carburizing, holding hardness at 60-65 HRC on balls and races. Seals? Rubber or metal shields, your pick. Open types for grease-packed apps, ZZ for dusty shops.
Operations managers tell us the real win is interchangeability. DIN 625, ABEC-3 precision or better. Drops right into SKF or NSK footprints without adjustments. We've replaced both in field swaps for clients. One Midwest pump maker switched after NSK quotes doubled—same performance, half the wait.
Export side's straightforward. We ship to 50+ countries. USA gets DDP options via FedEx for samples, ocean for bulk. Duty? HS code 8482.10, usually 2.5% on industrial bearings. We prep docs clean—CO, packing list, fumigation cert if wood pallets.
Customization creeps in here. Need 6306 with polyamide cage for high-speed fans? Or ceramic balls for low friction in spindles? Our ODM line handles it. Senior techs—30% of our 100-person team—dial in tolerances. Last year, a Canadian HVAC firm ordered 10,000 with reinforced cages. Ran 20% cooler than stock.
Procurement workflows favor facts over fluff. So consider lifecycle. A good 6306 lasts 20,000-40,000 hours at rated speed (3000 rpm). Factor relubrication intervals: every 4,000 hours in moderate dust. We've seen lazy maintenance double wear—harsh lesson for a few buyers.
Competitor landscape? Flooded with Alibaba listings promising $0.50/pc. Reality: those flake on QA. We quote landed $1.20-1.80 USD for 1000+ pcs, volume tiers down. Backed by ISO 9001, RoHS compliant. No mystery metal.
Wrapping this intro: if your RFQ sits unanswered or quality ghosts you, it's time for a steady source. We've got the stock, specs, and scale. Drop a line—let's spec your next order.
This isn't theory. It's from packing crates myself back when I ran floor ops. Vibration specs matter. Lead times kill schedules. We fix both.
6306 Bearing Technical Specifications
Exact dimensions and ratings per international standards. All data from our in-house testing and ISO verification.
| Parameter | Value | Notes |
|---|---|---|
| Bore Diameter (d) | 30 mm | Standard fit |
| Outer Diameter (D) | 72 mm | Housing compatible |
| Width (B) | 19 mm | Compact profile |
| Dynamic Load (Cr) | 26.7 kN | ISO 281 |
| Static Load (Cor) | 15 kN | Max radial |
| Speed Limit (Grease) | 10,000 rpm | Standard lube |
| Weight | 0.36 kg | Chrome steel |
| Material | GCr15 / 52100 | Heat treated |
| Cage | Steel / Brass / PA66 | Options available |
6307 bearing 6308 bearing 6206 bearing
Open, Z, ZZ, RS, 2RS seals standard. Tolerances P0 default, P6 on request.
Pro Tip: For high-heat apps over 120°C, spec brass cage. Avoids deformation seen in stamped steel.
What Sets Our 6306 Bearings Apart
No gimmicks. Just solid engineering. Low friction coefficient—under 0.001 with proper preload. Means less energy drag in continuous duty motors.
- Superfinished raceways reduce startup torque by noticeable margin.
- Consistent hardness across batch—no soft spots from uneven quenching.
- Drop-in replacement for major brands. We've matched FAG dims spot-on.
- Grease retention strong; 2RS seals hold up in washdowns.
One caveat: don't over-torque during install. Max 15 Nm or you risk brinelling. We've fixed that for rushed techs.
Compared to basic 6306 from spot-market suppliers:
| Aspect | YIDI 6306 | Generic Import |
|---|---|---|
| Hardness Uniformity | ±2 HRC | ±5 HRC |
| Noise Level | Low (V1) | Medium |
| Lead Time (1000 pcs) | 7-14 days | 30+ days |
Where 6306 Bearings Thrive
Versatile. Pumps in wastewater plants. Fans in HVAC. Wheels on material handlers.
Heavy Duty
- Agricultural machinery
- Conveyor idlers
- Electric motors (NEMA)
Precision
- Spindles
- Compressors
- Power tools
In food processing? 2RS with FDA grease. Automotive? Vibration damping key. We've supplied both.
Smart Procurement for 6306 Bearings
Pain points hit hard. Stockouts delay production. Subpar quality spikes failures. Here's how to sidestep.
Start with load calc. Use formula: P = Fr + 0.2 Fo or software like SKF's. Oversize slightly for shock loads.
- Verify supplier ISO 9001 and recent audit.
- Ask for batch noise/vibration reports.
- Sample first—test in your rig.
- Lock pricing tiers for volume.
Common mistake: ignoring cage type. Steel fine for low-speed. Brass or poly for 5000+ rpm.
Warning: Skip unbranded brokers. Direct factory like us means traceability to steel melt.
Ready to quote? Send your annual volume. We build custom schedules.
YIDI Motion: Your Hebei Bearing Factory
100 employees. 30% senior techs. German/Japanese CNC grinders. Annual output 2M+ bearings.
Located Shijiazhuang, 1hr to Tianjin port. Exports to USA, Germany, Japan. Compliant CE, RoHS.
One-stop: 6306 plus ball screws, linear modules. Bundled kits save logistics headaches.
Contact: +86 18134111662 | adam@yidimotion.com | Full Details
Logistics from China to Your Door
Bulk: 20GP holds 40,000 pcs. LCL for trials. USA transit 25-35 days ocean. Air 5-7 days.
Incoterms: FOB/CIF/DDP. We handle consolidation.
- Packing: Cartons + pallets, anti-rust paper.
- FOB Tianjin: $1.50/pc @5000.
- Min order: 100 pcs.
Post-Brexit EU? We route Rotterdam smooth.
OEM and ODM for 6306 Variants
Your brand on the box. Custom cages, logos stamped. MOQ 5000 for specials.
Engineers collaborate via Zoom. Prototypes in 15 days.
What Buyers Say
Mike R., Procurement Mgr, Texas Pumps Inc.
"Switched to YIDI 6306 after SKF delays. Same quiet run, half price. Shipped DDP flawless."
Anna K., Ops Director, Ontario HVAC
"OEM batch with PA cage perfect for fans. Lead time beat quotes. Will reorder."
Carlos M., Mexico Distributor
"Reliable stock. No rejections in 10k pcs. Good for my warehouse."
David L., UK Engineer
"Matched NSK specs exactly. Vibration low. Samples were key."
6306 Bearing FAQs
What's the difference between 6306 ZZ and 2RS?
ZZ metal shields for speeds/oil. 2RS rubber seals for dust/water. Both non-contact.
Can I get 6306 in stainless?
Yes, AISI440C. Premium price, for corrosive apps like marine.
Lead time for 10,000 pcs?
Stock: 3 days. Custom: 20-25 days.
Are they ABEC rated?
P0 standard (ABEC-1). P6 (ABEC-3) available.
Free samples?
Yes, 4-8 pcs. Cover freight.
Get Your 6306 Bearing Quote Today
Factory direct. No middlemen. Risk-free trial.
Call +86 18134111662 | Email adam@yidimotion.com | Contact Form
Typical response: 2 hours. Let's solve your supply needs.
By Adam Zhang, Export Director, YIDI Motion
Hebei YIDI Import & Export Trading Co., Ltd.
16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China
