High Speed 12x21x5mm 6801ZZ 2RS Thin Walled Bicycle Hub Bearing
| Item No : | |
| Size (d*D*B) : | 12x21x5mm |
| Material : | Chrome steel Gcr15 |
| Lead Time : | 3-5 days |
| Weight : | 0.006KG |
| MOQ : | 100 pcs |
⚙️Product Description:
Designing advanced machinery with extreme space and weight limitations without compromising on operational precision? Our 6801ZZ / 6801-2RS Thin Section Deep Groove Ball Bearing (Size: 12x21x5mm) is engineered precisely to conquer tight radial envelopes and lightweight applications. Despite its incredibly slim metric profile, it features standard deep-groove geometries capable of managing radial loads alongside moderate axial forces. Available with double metal shields (ZZ) for high-speed low-friction protection, or double rubber seals (2RS) for maximum dust and moisture exclusion. As a global B2B bearing trading partner, we offer this high-demand thin-wall component under our proprietary “RMO” brand for optimized wholesale profitability, while possessing the direct trade network to source alternative premium tier-1 international brands to match your OEM specifications.
⚙️Product Features:
- Ultra-Thin Section Cross-Section: Features a tiny 4.5mm radial cross-section width, maximizing space-saving layout benefits for compact instrumentation and precision motor housings.
- Dual Sealing Configurations Available: Choose 6801ZZ with non-contact steel shields for higher RPM thresholds, or 6801-2RS with synthetic rubber seals to survive outdoor environments.
- Super-Finished Steel Raceways: Advanced honing on internal grooves ensures minimum running torque, quiet operation, and significantly reduced frictional heat.
- Premium GCr15 High-Carbon Chrome Steel: Rings and rolling elements are hardened through modern vacuum heat treatment to ensure excellent structural stiffness and long wear-resistant life.
- Flexible B2B Sourcing Ecosystem: Boost your distribution markup with our direct-from-factory RMO brand, or authorize our procurement division to bundle shipments with famous global premium brands.
⚙️Product Application:
Formulated for high speed limits and lightweight efficiency, the 6801 series thin-wall bearing is widely utilized in:
- Premium bicycle components (front and rear wheel hubs, headsets, and bottom bracket links).
- UAVs, drones, RC quadcopter brushless motors, and precision camera gimbals.
- Robotics articulation joints, surgical gear, and automation handling grippers.
- High-precision optical rotary encoders, scanning devices, and textile machinery spindles.
- Miniature electric motors, high-speed dental handpieces, and custom pneumatic gear.
⚙️Precautions:
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
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⚙️Obtain Certificate:
About Rimao
Since its establishment in 2011, Rimao Bearing has combined international vision with local wisdom and injected innovative ideas into every bearing and pulley with its profound industry accumulation and unremitting pursuit of technology. We have not only passed CE and ROHS certification, but also set a new benchmark in the industry and led the development trend of the bearing industry.
We are not just a ball bearing and roller bearing importer and wholesaler. We provide real solutions to help you achieve the product and design goals set by your customers. With more than 20 years of production and sales experience, tens of thousands of models and specifications, we look forward to cooperating with you!
⚙️Technical Parameters:
| Item No. | 6801ZZ / 6801-2RS (61801 Series) |
| Size | 12x21x5mm |
| Bearing Type | Thin Section Deep Groove Ball Bearing |
| Rings & Balls Material | Chrome Steel GCr15 |
| Sealing Form | |
| Internal Clearance | |
| Working Temperature Range | -20°C to +120°C |
| Brand | RMO/Neutral/OEM/Other Brands |
| Package | Individual plastic bag, plastic tube or original RMO brand box |
| Lead Time | 3-5 days for stock; 7-15 days for bulk orders |
| Shipping | Express (DHL/FedEx/UPS), Air Freight, Sea Freight |
| Payment | 100% T/T, or 30% T/T In Advance ,70% T/T After Finished Production |
| Model No. | d | D | H | m | Model No. | d | D | H | m |
| 6800ZZ | 10 mm | 19 mm | 5 mm | 6 g | 6812ZZ | 60 mm | 78 mm | 10 mm | 105 g |
| 6801ZZ | 12 mm | 21 mm | 5 mm | 6 g | 6813ZZ | 65 mm | 85 mm | 10 mm | 130 g |
| 6802ZZ | 15 mm | 24 mm | 5 mm | 8 g | 6814ZZ | 70 mm | 90 mm | 10 mm | 140 g |
| 6803ZZ | 17 mm | 26 mm | 5 mm | 8 g | 6815ZZ | 75 mm | 95 mm | 10 mm | 150 g |
| 6804ZZ | 20 mm | 32 mm | 7 mm | 18 g | 6816ZZ | 80 mm | 100 mm | 10 mm | 155 g |
| 6805ZZ | 25 mm | 37 mm | 7 mm | 23 g | 6817ZZ | 85 mm | 110 mm | 13 mm | 270 g |
| 6806ZZ | 30 mm | 42 mm | 7 mm | 27 g | 6818ZZ | 90 mm | 115mm | 13 mm | 280 g |
| 6807ZZ | 35 mm | 47 mm | 7 mm | 30 g | 6819ZZ | 95 mm | 120 mm | 13 mm | 295 g |
| 6808ZZ | 40 mm | 52 mm | 7 mm | 32 g | 6820ZZ | 100 mm | 125 mm | 13 mm | 310 g |
| 6809ZZ | 45 mm | 58 mm | 7 mm | 39 g | 6821ZZ | 105 mm | 130 mm | 13 mm | 330 g |
| 6810ZZ | 50 mm | 65 mm | 7 mm | 52 g | 6822ZZ | 110 mm | 140 mm | 16 mm | 500 g |
| 6811ZZ | 55 mm | 72 mm | 9 mm | 84 g | 6824ZZ | 120 mm | 150 mm | 16 mm | 550 g |
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