Wholesale 25x37x7mm 6805-2RS Bicycle Bottom Bracket Bearings
| Item No : | 6805ZZ (Metal Shield) / 6805-2RS (Rubber Seal) |
| Size (d*D*B) : | 25x37x7mm |
| Material : | Chrome Steel GCr15 |
| Lead Time : | 3-5 days |
| Weight : | 0.023KG |
| MOQ : | 100 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
Managing high torque transfers on a 25mm performance axle? The 6805-2RS and 6805ZZ Thin Section Bearings (25x37x7mm) bridge the gap between lightweight design and heavy-duty power transmission. With a robust 7mm width housing larger steel balls, this bearing is engineered to withstand significant radial and lateral forces while maintaining a compact 37mm outer profile. It is universally recognized as the powerhouse component for premium bicycle bottom brackets (BB), electric vehicle (EV) gearboxes, and automated guided vehicle (AGV) drive wheels. As a tier-1 B2B bearing trader, we deliver unmatched procurement flexibility: lower your BOM costs with our rugged RMO proprietary brand, or utilize our global sourcing channels to acquire authentic international legacy brands for your uncompromising OEM standards.
⚙️Product Features:
- High-Torque 25mm Bore: Perfectly sized for standard 25mm hollow axles (and 24mm systems with a shim), maximizing stiffness and power transfer efficiency in pedal-driven and motor-driven powertrains.
- Aggressive Environment Sealing: Choose the 6805-2RS (Rubber Seals) to defend against mud, water, and trail debris in outdoor ATVs and cycling; or the 6805ZZ (Metal Shields) for heat-efficient, low-drag performance in enclosed industrial gearboxes.
- Enhanced Lateral Rigidity: The 7mm width allows for a larger ball-to-raceway contact area compared to ultra-thin models, significantly improving resistance to the twisting forces common in cranksets and drive wheels.
- Wear-Defying Chrome Steel: Forged from high-grade 52100 (GCr15) steel, offering exceptional surface hardness to prevent pitting and spalling under sustained heavy loads.
- Scalable B2B Solutions: Optimize your supply chain. We supply our high-margin RMO bearings in massive bulk for aftermarket distributors, while executing precision sourcing of specific global brands for top-tier manufacturers.
⚙️Product Application:
Engineered for dynamic load-bearing and rigorous environments, the 6805 series dominates in:
- Premium bicycle bottom brackets (e.g., Hollowtech equivalents) and heavy-duty mountain bike pivots.
- Electric motorcycle (EV), ATV, and electric golf cart transmission gearboxes.
- Industrial Automated Guided Vehicles (AGV) and warehouse robotic drive wheels.
- Agricultural automated seeders, commercial lawnmowers, and heavy textile machinery.
- Global cycling parts wholesalers and industrial powertrain OEM procurement managers.
⚙️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:
| Model No. | 6805ZZ / 6805-2RS (61805 Series) |
| Size | 25x37x7mm |
| Bearing Type | Thin Section Deep Groove Ball Bearing |
| Load Category | Medium-to-Heavy Duty / Powertrain |
| Material | Chrome Steel GCr15 |
| Sealing Form | |
| Dynamic Load (Cr) | |
| Static Load (Cor) | ~ 2,950 N |
| Max RPM | ~ 15,000 RPM (Grease / Reference value for ZZ metal shield version) |
| Working Temperature | -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 |
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