Corrosion-Resistant S625-2RS Stainless Steel Bearings for Saltwater Fishing Reels
| Item No : | S625-2RS (Rubber Seal) / S625ZZ (Metal Shield) |
| Size (d*D*B) : | 5x16x5mm |
| Material : | AISI 420 Martensitic Stainless Steel |
| Lead Time : | 3-5 days |
| Weight : | 0.005KG |
| MOQ : | 100 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
The S625 series (5x16x5mm) is a corrosion-resistant miniature deep groove ball bearing manufactured from premium AISI 420 (13Cr) martensitic stainless steel. Combining a 5mm inner bore with a 16mm outer diameter and 5mm width, it is specifically heat-treated to achieve optimal Rockwell hardness (55–58 HRC) while offering exceptional resistance to freshwater, saltwater, rust, and mild chemical exposure. Available with low-friction metal shields (S625ZZ) or contact rubber seals (S625-2RS) filled with waterproof synthetic grease, we supply these high-grade anti-rust bearings under our RMO brand, supported by versatile multi-brand OEM procurement for global marine hardware and food machinery builders.
⚙️Product Features:
- AISI 420 Martensitic Stainless Construction: High chromium content ensures superior corrosion resistance against salt spray and moisture while maintaining high mechanical strength.
- Optimized Water-Resistant Lubrication: Pre-packed with food-grade or waterproof synthetic grease to prevent washouts and internal raceway rusting in wet environments.
- High Hardness & Wear Life: Specialized vacuum heat treatment raises ring and ball hardness to HRC 55–58, resisting micro-pitting under dynamic load cycles.
- Precision Smooth Operation: Micro-ground raceways ensure quiet, low-vibration rotation essential for high-sensitivity optical drives and fishing spools.
⚙️Product Application:
Engineered for rust protection and micro-spatial integration in damp or saline environments, the S625 bearing is widely specified in:
- Marine & fishing tackle: saltwater fishing reel drive shafts, line rollers, and marine winch handles.
- Food & beverage processing: bottling line micro-transports, packaging tools, and sanitary metering pumps.
- Medical & dental devices: laboratory liquid handlers, centrifugal separators, and sterilization equipment.
- Outdoor automation: weather-exposed security camera gimbals, marine sensors, and outdoor drone motors.
⚙️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. | S625-2RS (Rubber Seal) / S625ZZ (Metal Shield) |
| Metric Dimensions | 5 x 16 x 5 mm (Inner d x Outer D x Total Width/Height H) |
| Bearing Type | Miniature Deep Groove Ball Bearing |
| Ring & Ball Material | AISI 420 Martensitic Stainless Steel |
| Hardness Rating | HRC 55 – 58 (High Wear Resistance) |
| Corrosion Resistance | Superior vs Saltwater, Moisture & Washdowns |
| Precision Grade | ABEC-1 / ABEC-3 (P0 / P6) |
| Lubrication | Pre-filled Water-Resistant Synthetic / Food-Grade Grease |
| Target Applications | Fishing Reels, Food Machinery, Marine Gear |
| 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 |
| Model No. | d | D | H | m |
| S623-2Z | 3 mm | 10 mm | 4 mm | 1.65 g |
| S624-2Z | 4 mm | 13 mm | 5 mm | 4.7 g |
| S625-2Z | 5 mm | 16 mm | 5 mm | 5 g |
| S626-2z | 6 mm | 19 mm | 6 mm | 8.65 g |
| S627-2Z | 7 mm | 22 mm | 7 mm | 13.1 g |
| S628-2Z | 8 mm | 24 mm | 8 mm | 18.5 g |
| S629-2Z | 9 mm | 26 mm | 8 mm | 21.8 g |
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