D/W ER1212
D/W Series Stainless Steel Miniature Bearings
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Basic Information
Main Dimensions
Performance
Materials
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D/W ER1212 Bearing Product Overview & Core Advantages
The D/W ER1212 is a precision single row deep groove ball bearing designed for demanding applications requiring high reliability and dimensional stability. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. This bearing is engineered to primarily support radial loads and is characterized by its compact design, making it ideal for applications where space is limited. Its P0 tolerance class and tight dimensional tolerances ensure consistent performance and ease of integration into precision assemblies.
D/W ER1212 Bearing Model Code Explained, Specifications & Naming Convention
The model number ER1212 is decoded as follows:
- ER: Series prefix for a specific design of deep groove ball bearing.
- 12: Indicates a bore diameter of 0.5 inches (12/64").
- 12: Indicates a specific outside diameter and width profile.
Key specifications derived from the full product data:
- Seal Type: Open (No seal or shield).
- Lubrication: None (Requires external lubrication).
- Cage Material: Stainless Steel.
- Tolerance Class: P0 (Standard ABEC 1).
- Internal Clearance: CN (Normal).
D/W ER1212 Bearing Structural Features & Performance Benefits
The performance of the ER1212 is defined by its robust construction and material selection:
- All-Stainless-Steel Construction: The rings, balls, and cage are made from stainless steel, providing superior corrosion resistance and suitability for washdown environments or applications exposed to mild chemicals and moisture.
- High-Speed Capability: With a limiting speed of 45,000 rpm, this bearing is suitable for high-speed spindles and machinery, though appropriate lubrication must be applied by the user.
- Precision Performance: The P0 tolerance class and tight bore/OD tolerances ensure smooth operation, reduced vibration, and precise rotational accuracy, which is critical for precision instruments.
- Radial Load Capacity: Engineered to handle significant radial dynamic loads (117 lbf) and static loads (61 lbf) for its compact size.
D/W ER1212 Bearing Typical Application Areas
The D/W ER1212 is ideally suited for a wide range of applications across various industries, including:
- Medical and Dental Equipment: Surgical handpieces, small pumps, and precision devices requiring corrosion resistance.
- Food and Beverage Processing: Conveyor rollers and machinery where washdown and corrosion are concerns.
- Precision Instruments and Optical Devices: Encoders, scanners, and measuring instruments that demand high-speed and low-vibration operation.
- Small Motors and High-Speed Spindles: Applications requiring a compact bearing solution with a high limiting speed.
