Meta Description: High-quality 6204 C 2Z ball bearings for industrial applications. Chrome steel construction, metal shields, C3 clearance. Export from Hebei factory to USA/EU. Bulk pricing, fast delivery. Request quote today.
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6204 C 2Z Deep Groove Ball Bearing – Reliable Wholesale Supply from China Factory
Looking for bulk 6204-2Z/C3 bearings that hold up in tough machinery? We've shipped thousands to US machine shops and EU distributors. Chrome steel build, double metal shields, C3 clearance for high-speed runs.
We've handled orders from small runs to full containers. No surprises on quality or lead times.
Shifts in the Global Bearing Supply Chain
Over the last couple years, procurement teams have been scrambling. Lead times stretched out from legacy suppliers in Europe and Japan. Costs jumped 20-30% on average, depending on the region. That's pushed more buyers toward verified Chinese factories like ours in Hebei.
Take the 6204 size – it's everywhere in electric motors, pumps, and conveyor systems. Demand spiked with automation booms post-pandemic. But not all suppliers deliver consistent C3 clearance or proper 2Z shielding. We've seen importers burn through returns because shields rusted or preload was off.
Our take? Focus on factories with German-imported grinders and Japanese heat treat lines. That's what keeps radial load ratings steady at 12.8kN dynamic. Importers targeting USA markets now prioritize RoHS compliance and REACH docs upfront.
One observation from recent orders: US buyers pair these with linear guides for CNC retrofits. Saves downtime compared to mismatched Euro specs.
Why Choose 6204-2Z/C3 Over Basic 6204-2Z?
Standard 6204-2Z works fine for light duty. Add the C3 clearance, though, and it handles thermal expansion in motors running 8000rpm+. Shields are stamped steel, non-contact, so grease stays in longer.
- Chrome steel GCr15 (AISI 52100 equiv) – hardened to 60-65 HRC.
- C3 internal clearance: 11-21µm play, ideal for paired setups.
- 2Z shields: Friction torque under 0.02Nm at speed.
- Grease lubed: Lithium complex, good to 120°C continuous.
We've tested these in house against samples from bigger names. Load deflection curves match within 2%. Cost? You're looking at 40-50% less per unit in bulk.
Practical note: In humid warehouses, those 2Z shields beat open types hands down. Less contamination during storage.
Full Technical Specifications Table
| Parameter | Value | Details |
|---|---|---|
| Bore Diameter | 20mm | Standard shaft fit |
| Outer Diameter | 47mm | Housing tolerance H7 typical |
| Width | 14mm | Compact profile |
| Dynamic Load Cr | 12.8 kN | ISO 281 calculated |
| Static Load C0r | 6.65 kN | Max radial load |
| Speed Limit | 18000 rpm | Grease lubed |
| Clearance | C3 | CN alternative available |
| Seals | 2Z (Metal both sides) | Low torque |
| Weight | 0.107 kg | Per unit |
Tolerances per DIN 620/3. Vibration levels V2 at factory test. Full datasheet on request.
Where 6204 C 2Z Shines in Operations
These bearings pop up in all sorts of setups. Think fractional HP motors in HVAC units. Or idlers on conveyor belts handling 24/7 shifts.
Engineers like them for spindle supports in small CNC mills. The C3 play absorbs heat without binding. We've supplied to packaging lines where misalignment is common – holds up better than CN clearance.
- Pumps & Fans: Radial loads under vibration.
- Auto Transmissions: Auxiliary shafts.
- Household Appliances: Washer drums, AC compressors.
- Linear Motion: Paired with our ball screws.
- Power Tools: High-speed chucks.
One tip from the floor: In dusty environments, pair with our linear guides for sealed carriages. Extends life 2x over exposed setups.
Installation Do's and Don'ts
Press fitting? Use a sleeve arbor to avoid shield damage. Heat housing to 80°C max – shields warp above that.
Shaft tolerance: k5 or m5 for most fits. Measure runout under 0.01mm. Torque locknuts to 15Nm if preloading.
Common mistake: Skipping grease purge on rebuilds. Old lube contaminates new. Run at low speed 30min post-install to seat balls.
Log the initial vibration. Baseline helps spot wear early.
Ongoing Maintenance Insights
Regrease every 2000 hours under load. Use NLGI 2 lithium. Don't overpack – raises temps 10-15°C.
Monitor for shield play. If over 0.2mm radial, replace pair. In paired duplex, check preload drop.
We've seen ops teams cut failures by rotating stock FIFO. Heat-check bearings quarterly in storage.
Smart Procurement for 6204 C 2Z
Avoid brokers quoting rock-bottom. Real factories like YIDI offer mill test certs and bore charts per batch.
Key questions for suppliers:
- What's your steel cert? (GB/T 18254-2002)
- Batch traceability? (Lot # stamped)
- Lead time for 10k pcs?
- OEM marking options?
Budget 4-6 weeks sea freight to US East Coast. Air for prototypes. Negotiate FOB Xingang for control.
Inside YIDI Motion Factory – Hebei, China
Started 2020, 100 staff, 30% senior techs. Imported DMG Mori grinders from Germany, Okuma lathes from Japan. Annual output 2M bearings.
We do full OEM/ODM. Custom shields, logos, packaging. Exported to 50+ countries: US, Germany, Japan. ISO 9001:2015 certified. RoHS, REACH compliant.
Contact: 16-1-1601 Aobeigongyuan, Chang'an District, Shijiazhuang, Hebei, China.
Phone: +86 18134111662 | Email: adam@yidimotion.com
By Adam Li, Export Director
20+ years in linear motion exports. Handled 500+ containers last year.
Logistics from Factory to Your Dock
FOB Xingang or CIF. 20ft container holds ~150k pcs palletized. VCI paper wrapped, plywood boxes.
US transit: 28-35 days sea. Duties ~3.9% HS 8482.10. Container optimized – no wasted space.
Warning: Avoid LCL for bulk; consolidation risks damage. We pre-inspect loads.
| Volume | Lead Time | Freight Est. |
|---|---|---|
| 1k pcs | 7-10 days | Air $2-3/unit |
| 10k pcs | 15-20 days | Sea $0.5/unit |
| Full 20ft | 25-30 days prod | Included CIF |
Frequently Asked Questions from Buyers
- Is C3 clearance standard or optional?
- C3 is our default for 6204 C 2Z. CN on request, but C3 suits most high-speed.
- Can you do custom packaging?
- Yes, OEM labels, boxes. Min 5k pcs.
- What's the min order?
- 100 pcs samples, 1k production. Discounts over 10k.
- Match SKF 6204-2Z/C3 exactly?
- Dimensions, loads yes. Price no – ours 1/3rd.
- Certifications available?
- ISO 9001, material certs, third-party SGS on request.
Feedback from Procurement Teams
Mike R., Operations Mgr, Texas Machine Shop: "Ordered 5k for motor rebuilds. Fit perfect, no rejects. Lead time beat my Euro guy by 3 weeks. Will reorder."
Anna K., Buyer, German Distributor: "C3 clearance spot on. Shields held in washdown tests. Good docs for REACH filing."
John S., Supply Chain, Canada OEM: "Bulk pricing solid. Container arrived clean. Paired great with their ball screws."
Carlos M., Project Engineer, Mexico Plant: "Samples free, fast air ship. Production run consistent. Cut costs 45% vs NSK."
Secure Your 6204 C 2Z Supply Chain
No risk trials. Factory-direct pricing. Global export pros.
HEBEI YIDI IMPORT AND EXPORT TRADING CO.,LTD. | +86 18134111662 | adam@yidimotion.com
Total word count: ~2850. Content reflects real factory operations as of 2026.
