SMR105-2OS Hybrid Ceramic Ball Bearing (5x10x4 mm)

📌 Product Specifications

🛠 Core Engineering Advantages

1. Low Friction High Speed Performance

Silicon Nitride ceramic balls reduce rotational inertia by up to 60%, enabling ultra-smooth spool acceleration and reduced friction loss.

2. Marine Grade Corrosion Resistance

AISI 440C stainless steel rings provide strong resistance against saltwater corrosion and humid environments, extending service life significantly.

3. Orange 2OS Non-Contact Seal System

Removable orange seals protect against dust and water while maintaining extremely low rotational resistance.

🔬 Technical Performance Comparison

Frequently Asked Questions (FAQ)

Q1: Can I run the SMR105-2OS bearing completely dry without any oil or grease?
A: Yes, absolutely. Because the silicon nitride (Si3N4) ceramic balls are self-lubricating and do not suffer from thermal expansion friction like steel, the bearing can be operated completely dry. Dry running provides the maximum free-spin performance, which is highly preferred in fishing reel tuning applications. For high-RPM industrial micro motors, a single drop of light electronic oil is recommended to reduce noise and improve acoustic stability.

Q2: What is the main difference between Chrome Steel MR105 and your Stainless Hybrid SMR105-2OS?
A: There are three key upgrades:
1. Corrosion Resistance: The “S” prefix indicates AISI 440C stainless steel rings, which significantly outperform chrome steel in marine and humid environments.
2. Rotational Inertia: Ceramic balls reduce starting torque and rotational weight by approximately 60%, enabling instant spool acceleration.
3. Sealing System: The removable orange 2OS seals provide non-contact protection with zero drag, unlike traditional ZZ metal shields.

Q3: Are these bearings rated at ABEC-7 or ABEC-9? Do you provide certifications?
A: Standard SMR105-2OS bearings are manufactured to ABEC-7 precision, which is ideal for high-performance fishing reels and vibration-sensitive applications. ABEC-9 grades are available upon request for high-end industrial and precision equipment. Full documentation including MTR, RoHS, and REACH certificates is available for bulk orders.

Q4: What is your Minimum Order Quantity (MOQ) for international buyers?
A: We support flexible low MOQ for standard stock items such as SMR105-2OS to assist testing and sample evaluation. For OEM branding, custom packaging, or special clearance requirements, MOQ will depend on the specific order configuration.

Q5: Can the orange rubber seals be removed and reinstalled?
A: Yes. The 2OS orange seals are designed for easy removal and reinstallation. They can be carefully removed for cleaning or dry tuning and reinstalled without damaging the sealing structure, making them suitable for maintenance and performance tuning applications.

📦 Application Areas

Fishing reels, high-speed micro motors, robotics, precision instruments, automation systems.

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