213 NR
200 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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213 NR Bearing Product Overview & Core Advantages
The 213 NR is a single row deep groove ball bearing designed for exceptional radial load capacity and reliable performance in demanding industrial applications. This metric bearing features a snap ring groove on its outer ring, enabling simplified and secure axial location within a housing without requiring complex machining. Manufactured with chrome steel rings and balls and a stainless steel cage, it offers robust durability and consistent operation. Its open design allows for versatile lubrication options, making it suitable for a wide range of operating conditions where high radial dynamic load rating and straightforward installation are critical.
Model Code Breakdown
The model designation 213 NR can be decoded as follows:
- 213: Standard bearing series designation, indicating the dimensional series (width and outside diameter relative to the bore).
- NR: Signifies that the outer ring has a snap ring groove. This feature allows for the use of a snap ring to axially locate the bearing, simplifying housing design and assembly.
Additional standard specifications for this model include a P0 tolerance class (Normal) and a CN radial internal clearance (Normal).
213 NR Bearing Structural Features & Performance Benefits
The performance of the 213 NR is defined by its specific construction:
- Snap Ring Groove for Axial Location: The integrated groove on the outer ring eliminates the need for a shoulder or complex housing design to secure the bearing axially. This simplifies assembly, reduces component count, and lowers overall system cost.
- High Radial Load Capacity: The single row deep groove construction is optimized to support high radial dynamic and static loads, making it ideal for applications with significant radial forces.
- Robust Material Construction: Components made from chrome steel (rings and balls) provide high hardness and wear resistance, while the stainless steel cage ensures strength and corrosion resistance for stable operation at the specified limiting speed.
- Versatile Lubrication: The open seal type allows for the application of various greases or oils, enabling optimal performance across its wide temperature range from -30°C to 120°C.
213 NR Bearing Typical Application Areas
The 213 NR bearing is commonly specified in applications requiring reliable radial support and easy mounting. Key industries and equipment include:
- Electric Motors and Generators
- Industrial Gearboxes and Transmissions
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- General Industrial Machinery where secure axial location is needed without a stepped housing.
