306 NR
300 Series Snap Ring Bearings
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Part No.
Part No.
306 NR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.37 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
72 mm
Outside diameter tolerance
-0.013mm to 0
Width
19 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Outside diameter of snap ring
78.6 mm
Width of snap ring
1.7 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
6677 lbf
Radial static load rating
4856 lbf
Limiting speed
11 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 10.8
/ each
In Stock
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306 NR Bearing Product Overview & Core Advantages
The 306 NR is a single row deep groove ball bearing designed for exceptional radial load capacity and reliable performance in demanding applications. This metric bearing features a snap ring on its outer ring, enabling simplified axial location within a housing without the need for complex machining. Manufactured with high-precision P0 tolerance and a standard CN radial internal clearance, it delivers consistent operation and is ideally suited for applications requiring robust support and straightforward installation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 306 | Standard bearing series designation, indicating the bearing dimensions (30mm bore, 72mm OD, 19mm width). |
| NR | Signifies that the bearing is fitted with a snap ring (located on the outer ring). This feature aids in axial positioning. |
306 NR Bearing Structural Features & Performance Benefits
- Snap Ring Locating Feature: The integrated snap ring on the outer diameter simplifies assembly by providing a positive axial location, reducing housing design complexity and associated costs.
- High Load Capacity: The single row deep groove construction is optimized to support significant radial loads (Dynamic: 6677 lbf, Static: 4856 lbf), ensuring durability.
- Precision Engineering: Built to P0 tolerance class with a CN radial internal clearance, this bearing offers reliable, high-quality performance for a wide range of industrial applications.
- Robust Material Construction: Components made from Chrome Steel (rings and balls) and a Stainless Steel cage provide excellent strength and corrosion resistance, contributing to a long service life.
- High-Speed Capability: With a limiting speed of 11,000 rpm, it is suitable for applications requiring rapid rotation.
306 NR Bearing Typical Application Areas
This bearing is commonly specified in:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
