6408 NR
6400 Series Snap Ring Bearings
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Part No.
Part No.
6408 NR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.28 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.012mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.015mm to 0
Width
27 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Outside diameter of snap ring
116.6 mm
Width of snap ring
2.46 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
14320 lbf
Radial static load rating
8206 lbf
Limiting speed
9 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
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6408 NR Bearing Product Overview & Core Advantages
The 6408 NR is a single row deep groove ball bearing designed for exceptional radial load capacity and reliable performance in demanding applications. Its key distinguishing feature is the snap ring groove and fitted snap ring on the outer ring, which provides secure axial location and simplifies housing design by eliminating the need for complex end covers or shoulders. Manufactured with precision tolerances (P0 class) and stainless steel cage, this bearing offers robust performance, long service life, and is suitable for a wide operating temperature range.
6408 NR Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 6408 | Standard bearing series designation, indicating a medium width, deep groove radial bearing with a 40mm bore. |
| NR | Indicates the outer ring has a snap ring groove and is supplied with a fitted snap ring. This feature enables positive axial location within the housing. |
6408 NR Bearing Structural Features & Performance Benefits
- Snap Ring Locating Feature: The integrated snap ring groove and supplied ring provide a compact and cost-effective solution for axial location, enhancing assembly simplicity and bearing rigidity in the housing.
- High Radial Load Capacity: The deep groove raceway and robust construction enable it to handle significant radial dynamic loads (14,320 lbf) and static loads (8,206 lbf).
- Optimized for High-Speed Operation: The lightweight stainless steel cage ensures stable operation and reduced centrifugal forces, contributing to a high limiting speed of 9,000 rpm.
- Wide Temperature Range & Material Integrity: Constructed from chrome steel for rings and balls, the bearing maintains dimensional stability and performance across a temperature range from -30°C to 120°C.
- Standard Internal Clearance (CN): Provides a versatile fit for a wide range of standard operating conditions and applications.
6408 NR Bearing Typical Application Areas
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Fans and Blowers
- Agricultural Machinery
- Material Handling Conveyors
- Pumps and Compressors
