High-Torque 6907-2RS 35mm Bore Sealed Bearings for E-Bike Mid-Drive Motors
| Item No : | 6907-2RS / 6907ZZ |
| Size (d*D*B) : | 35x55x10mm |
| Material : | Chrome Steel GCr15 |
| Lead Time : | 3-5 days |
| Weight : | 0.074KG |
| MOQ : | 100 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
The 6907 series (35x55x10mm) represents an extra-light thin-section ball bearing designed to solve spatial bottlenecks in modern compact machinery. By combining a generous 35mm inner bore with a narrow 55mm outer diameter and a slim 10mm width, it allows routing hollow shafts, wiring, or tubing through the center without bloating external housing dimensions. Offered in low-friction metal shielded (6907ZZ) and contact rubber sealed (6907-2RS) variants, we supply high-precision 6907 bearings under our proprietary RMO brand while delivering tailored multi-brand OEM sourcing for global automation and e-mobility manufacturers.
⚙️Product Features:
- High Bore-to-OD Ratio: The 35mm bore within a 55mm envelope provides exceptional torque transmission along hollow shafts while minimizing overall assembly volume.
- Substantial Weight Savings: Up to 60% lighter than standard 6007/6207 series bearings, reducing rotational inertia and power consumption in electric drives.
- Optimized Raceway Geometry: Super-finished raceways reduce friction torque and thermal buildup during high-speed, continuous operation.
- Versatile Sealing System: Rubber-sealed 2RS shields against debris and splash in outdoor drives, while ZZ steel shields offer ultra-low starting resistance.
⚙️Product Application:
Combining large hollow pass-through capabilities with lightweight performance, the 6907 bearing is widely deployed in:
- E-bike mid-drive motors, electric scooter hubs, and light EV powertrains.
- Robotic arm hollow joints, collaborative robots (Cobots), and servo actuators.
- Textile machinery hollow spindles, printing press rollers, and packaging equipment.
- Medical imaging rotary tables, optical tracking gimbals, and encoder assemblies.
⚙️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 / Industry No. | 6907-2RS / 6907ZZ |
| Metric Dimensions | 35x55x10mm (Inner d x Outer D x Total Width/Height H) |
| Series Classification | 6900 / 61900 Series (Extra-Light Thin Section) |
| Bearing Type | Thin Section Deep Groove Ball Bearing |
| Closure / Sealing Type | Dual Rubber Seals (2RS) / Dual Metal Shields (ZZ) Options |
| Material | Chrome Bearing Steel GCr15 |
| Precision Rating | ISO P0 / P6 (ABEC-1 / ABEC-3) Optional |
| Dynamic Load Rating (Cr) | Approx. 10.8 KN |
| Static Load Rating (Cor) | Approx. 8.10 KN |
| Target Machinery | E-Bike Motors, Robotics, Hollow Shafts |
| Brand | RMO (Own Brand) / Neutral / OEM Custom / Other Global 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% TT, or 30% TT In Advance, 70% TT After Finished Production |
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