Low-Friction S6804-2RS Stainless Steel Thin Section Bearings for Underwater Drones
| Item No : | S6804-2RS / SS6804-2RS / S61804-2RS |
| Size (d*D*B) : | 20x32x7mm |
| Material : | AISI 420 Martensitic Stainless Steel |
| Lead Time : | 3-5 days |
| Weight : | 0.018KG |
| MOQ : | 100 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
The S6804-2RS (20x32x7mm, also designated as SS6804-2RS / S6804 2RS / S61804-2RS) is an ultra-thin section miniature deep groove ball bearing engineered from high-grade AISI 420 martensitic stainless steel. Featuring a 20mm inner bore, 32mm outer diameter, and a narrow 7mm width, it achieves an exceptionally high ratio of shaft diameter to cross-sectional envelope, allowing extreme weight reduction and compact housing designs. Equipped with dual-lip rubber seals (2RS) pre-filled with water-resistant synthetic grease, it delivers long-lasting corrosion protection, low friction torque, and smooth rotation in washdown, saltwater, and sensitive sterile environments. We supply these thin-section stainless bearings under our proprietary RMO brand while supporting global multi-brand OEM direct sourcing for medical device manufacturers, marine automation, and optical equipment integrators.
⚙️Product Features:
- Ultra-Thin 6804 Series Envelope: Ultra-narrow 6mm radial wall thickness maximizes shaft diameter clearance while keeping housing mass and rotational inertia to an absolute minimum.
- Corrosion-Resistant AISI 420 Stainless Steel: Martensitic stainless steel rings and balls resist rusting, pitting, and oxidation caused by humidity, saline mist, and harsh cleaning agents.
- Low Running Drag & High Speed: Precision-polished raceways with optimized steel ball complement deliver minimal start-up torque, quiet running, and stable thermal performance.
- Dual NBR 2RS Waterproof Seals: Protective rubber contact seals shield raceways against moisture splashes and fine dust contamination without compromising smooth rotation.
⚙️Product Application:
Engineered for space-restricted integration, weight reduction, and moisture-rich or sterile working conditions, the S6804-2RS stainless thin-section bearing is widely specified in:
- Medical & dental devices: surgical power tools, endoscopy rotary mounts, dental drills, and diagnostic scanner positioning heads.
- Marine & underwater equipment: ROV underwater drones, marine telemetry winches, fishing reel main shafts, and boat instruments.
- Robotics & optical automation: lightweight robot joint actuators, gimbal camera stabilization rings, and automated optical aligners.
- Cleanroom & food machinery: semiconductor wafer transfer stages, lab liquid handlers, and stainless food conveyor rollers.
⚙️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. |
 |  |  |  |  |
⚙️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. | S6804-2RS / SS6804-2RS / S61804-2RS |
| Key Dimensions | 20x32x7mm (Inner d x Outer Dia D x Total Width/Height H) |
| Bearing Type | Thin Section Deep Groove Ball Bearing |
| Series & Envelope | Ultra-Thin 6800 Series Cross Section |
| Ring & Ball Material | AISI 420 Martensitic Stainless Steel |
| Seal & Lubrication | Dual Rubber Seals (2RS) / Pre-filled Waterproof Synthetic Grease |
| Cage Material | AISI 304 Stainless Steel / Steel Retainer |
| Precision Rating | P0(ABEC‑1) / P6(ABEC‑3) Optional |
| Target Application | Surgical Tools, ROV Drones, Robotic Joints, Optical Gimbals |
| Brand | RMO (Own Brand) / Neutral / OEM Custom / Other Global Brands |
| Packing Method | |
| Lead Time | 3-5 days for stock; 7-15 days for bulk orders |
| Shipping Port | Guangzhou, Ningbo, Shanghai |
| Payment | 100% T/T, or 30% T/T In Advance, 70% T/T After Finished Production |
| Model No. | d | D | H | m |
| S6800-2RS | 10 mm | 19 mm | 5 mm | 5.6 g |
| S6801-2RS | 12 mm | 21 mm | 5 mm | 6.5 g |
| S6803-2RS | 17 mm | 26 mm | 5 mm | 8.2 g |
| S6804-2RS | 20 mm | 32 mm | 7 mm | 18 g |
| S6805-2RS | 25 mm | 37 mm | 7 mm | 24 g |
| S6806-2RS | 30 mm | 42 mm | 7 mm | 27 g |
| S6807-2RS | 35 mm | 47 mm | 7 mm | 32 g |
| S6808-2RS | 40 mm | 52 mm | 7 mm | 35 g |
| S6809-2RS | 45 mm | 58 mm | 7 mm | 42 g |
| S6810-2RS | 50 mm | 65mm | 7 mm | 52 g |
| S6811-2RS | 55 mm | 72 mm | 9 mm | 83 g |
leave a message
If you are interested in our products and want to know more details, please leave a message here, we will reply you as soon as we can.
You may also like
