D/W R2-2Z
D/W Series Stainless Steel Miniature Bearings
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D/W R2-2Z Bearing Product Overview & Core Advantages
The D/W R2-2Z is a precision miniature ball bearing designed for demanding applications requiring high reliability and compact design. As a single row deep groove ball bearing, it excels at handling primarily radial loads while also accommodating moderate axial loads in both directions. Manufactured entirely from stainless steel and featuring integral shields (2Z) with pre-applied grease, this bearing offers excellent corrosion resistance and is maintenance-free, making it ideal for high-speed, long-life operations in various industrial and precision instruments.
D/W R2-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Prefix / Suffix | Interpretation | Technical Significance |
|---|---|---|
| D/W | Manufacturer Series | Denotes a specific series of miniature and instrument bearings from the manufacturer. |
| R2 | Bore Size Code | Specifically indicates a 0.125" bore diameter. |
| 2Z | Seal/Shield Type | Signifies shielded on both sides. This provides effective protection against contamination while allowing for high-speed operation compared to contact seals. |
D/W R2-2Z Bearing Structural Features & Performance Benefits
Robust Stainless Steel Construction: All components—rings, balls, and cage—are made from stainless steel, providing superior corrosion resistance and enabling operation in harsh environments or where lubrication is minimal.
Optimized for High Speeds: The deep groove raceway and stainless steel cage contribute to smooth operation and low friction, supporting a high limiting speed of 67,000 rpm. The non-contact shields minimize friction for maximum rotational efficiency.
Reliable, Maintenance-Free Operation: The 2Z shields effectively retain the pre-applied grease lubrication and exclude contaminants. This sealed-for-life design ensures consistent performance without the need for re-lubrication, reducing maintenance costs and downtime.
Precision and Stability: Built to ABEC 1 (P0) tolerance class with a normal radial internal clearance (CN), this bearing offers reliable running accuracy and stable performance under standard operating conditions.
D/W R2-2Z Bearing Typical Application Areas
The D/W R2-2Z is engineered for compact, high-speed applications across various sectors. Its combination of small bearing dimensions, corrosion resistance, and maintenance-free operation makes it a preferred choice in:
- Precision Instruments: Optical encoders, medical devices, and laboratory equipment.
- Small Motors and Drives: Stepper motors, servo motors, and miniature fans.
- Office Automation: Printers, scanners, and copiers.
- Robotics and Automation: Small robotic joints, pick-and-place arms, and guidance systems.
- Electronics and Consumer Goods: High-speed spindles in dental handpieces, precision tools, and small gearboxes.
