3309 DNRCBM
Double Row Angular Contact Ball Bearings
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Part No.
Part No.
3309 DNRCBM
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Double Row
Weight
1.5 kg
Tolerance class
P6 (ABEC-3)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
100 mm
Outside diameter tolerance
-0.013mm to 0
Width
39.7 mm
Width tolerance
-0.05mm to 0
Chamfer dimension
1.5 mm
Distance from side face to load point
79 mm
Inner Ring Dimensions
Inner ring large-side shoulder diameter
67.95 mm
Outer Ring Dimensions
Shoulder diameter outer ring
86.53 mm
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
13905 lbf
Radial static load rating
11700 lbf
Limiting speed
6.3 X 1000 rpm
Lubrication
Lubricated
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Brass
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 60.46
/ each
In Stock
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3309 DNRCBM Bearing Product Overview & Core Advantages
The 3309 DNRCBM is a metric double row angular contact ball bearing engineered for applications requiring high precision and exceptional rigidity. This bearing is designed to simultaneously accommodate combined loads—significant radial loads along with bidirectional axial loads—making it ideal for complex loading scenarios. Manufactured to P6 (ABEC-3) tolerance class, it ensures precise running accuracy and reliable performance in demanding industrial environments. Its robust construction and optimized internal geometry contribute to a long service life and stable operation.
3309 DNRCBM Bearing Model Code Explained, Specifications & Naming Convention
The model number 3309 DNRCBM can be broken down as follows:
- 3309: Basic series designation, indicating a double row angular contact ball bearing with a 45mm bore and 100mm outside diameter.
- D: Signifies a double row bearing construction.
- NR: Indicates the bearing features a snap ring groove on the outer ring, facilitating secure axial location within a housing.
- C: Denotes a specific contact angle, optimized for carrying substantial axial loads.
- BM: Specifies that the bearing is lubricated with a high-performance grease suitable for the specified temperature range.
3309 DNRCBM Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness compared to single row bearings, enabling it to handle heavy combined loads effectively. The optimized contact angle further enhances its axial load-carrying capability.
- Precision Performance: Manufactured to P6 tolerance class, this bearing ensures minimal runout and smooth operation, which is critical for high-precision applications.
- Secure Mounting: The inclusion of an outer ring snap ring groove (NR) simplifies bearing assembly and provides reliable axial positioning, preventing creep in the housing.
- Ready-to-Use Lubrication: Pre-lubricated with a grease that operates effectively within a temperature range of -30°C to 110°C, the bearing offers immediate installation and initial maintenance-free operation.
- Durable Construction: Components made from chrome steel and a brass cage ensure high strength, wear resistance, and reliable performance at the specified limiting speed.
3309 DNRCBM Bearing Typical Application Areas
The 3309 DNRCBM is suited for a wide range of industrial machinery and equipment where high rigidity and precision are paramount. Common applications include:
- Machine Tool Spindles
- Gearboxes and Transmissions
- Industrial Pumps and Compressors
- Precision Agricultural Equipment
- Material Handling Systems
