
RMO SMF104ZZ Rust-Proof 440C Flange Bearing for Fishing Reel Spools
| Item No : | SMF104ZZ / SMF104-2Z |
| Size (d*D*B) : | 4x10x4x11.6mm |
| Material : | Chrome Steel GCr15 |
| Lead Time : | 3-5 days |
| Weight : | 0.0015KG |
| MOQ : | 100 pcs |
| Service : | Support Sample Testing |
⚙️Product Description:
Working with a 4mm shaft in wet, sterile, or corrosive environments where housing space is extremely limited? The SMF104ZZ Stainless Steel Flanged Ball Bearing (4x10x4mm, 11.6mm Flange) delivers uncompromising rust resistance and precise axial positioning. Forged from high-grade AISI 440C stainless steel, this miniature flanged bearing fits into compact 10mm housings while resisting saltwater, chemicals, and washdowns. The built-in 11.6mm flange acts as a positive thrust stop in thin-wall panels. As an agile B2B bearing trader, we supply our factory-tested RMO brand in bulk to maximize your profit margins, or source premium Japanese OEM equivalents for your ultra-precision assemblies.

⚙️Product Features:
- AISI 440C Stainless Steel Construction: Superior resistance against oxidation, moisture, acidic spray, and harsh cleaning chemicals.
- Miniature 4mm Bore x 10mm OD Profile: Engineered for high-density micro-mechanisms requiring smooth, low-friction rotation in tiny footprints.
- 11.6mm Integrated Flange Stop: Eliminates the need for retaining rings or internal housing shoulders, speeding up precision panel assembly.
- ZZ Metal Shields (Stainless): Dual stainless steel shields keep contaminants out and hold high-speed factory grease in without adding contact torque.
- Flexible B2B Sourcing: Boost your aftermarket wholesale margins with our RMO brand, or leverage our global trade network for traceable brand imports.
⚙️Product Application:
Engineered for corrosive micro-environments and 4mm precision shafting, the SMF104ZZ is essential for:
- High-end saltwater fishing reels (Spool shafts and tension knob assemblies).
- Medical dental handpieces, micro-pumps, and surgical diagnostic equipment.
- Cleanroom miniature robotics, optical sensor pivots, and laboratory automation.
- Food processing micro-drives, metering dispensers, and chemical dosing pumps.
- Global fishing tackle OEM builders, medical device suppliers, and B2B hardware importers.
⚙️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
⚙️Technical Parameters:
| Model No. | |
| Bearing Type | |
| Size | 4x10x4x11.6mm |
| Flange Width | 0.8 mm |
| Material | |
| Shielding Type | Dual Stainless Steel Shields ZZ |
| Dynamic Load (Cr) | |
| Static Load (Cor) | |
| Max RPM | ~ 45,000 RPM (Grease) |
| Package | |
| Lead Time | |
| Shipping | |
| Payment | 100% TT, or 30% TT In Advance, 70% TT After Finished Production |
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