6004 NR
6000 Series Snap Ring Bearings
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Part No.
Part No.
6004 NR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.069 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
42 mm
Outside diameter tolerance
-0.011mm to 0
Width
12 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Outside diameter of snap ring
46.3 mm
Width of snap ring
1.12 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
2237 lbf
Radial static load rating
1124 lbf
Limiting speed
24 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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In Stock
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6004 NR Bearing Product Overview & Core Advantages
The 6004 NR is a single row deep groove ball bearing engineered for high-performance radial load applications. Its defining feature is the integral snap ring groove and fitted snap ring on the outer ring, which facilitates secure and space-saving axial location within a housing. Manufactured with precision P0 tolerance and a standard CN radial internal clearance, this bearing offers reliable operation and consistent performance. Constructed from chrome steel rings and balls with a stainless steel cage, it provides excellent durability and is suitable for a wide operating temperature range from -30°C to 120°C.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 6004 | The basic bearing designation, indicating a metric, single row deep groove ball bearing with a 20 mm bore, 42 mm OD, and 12 mm width. |
| NR | Signifies that the bearing has a snap ring groove and is supplied with a snap ring fitted on the outer ring. This feature simplifies assembly and provides positive axial location. |
| (No Seal Suffix) | The open (unsealed) design allows for higher limiting speeds and is intended for applications where external sealing is provided or re-lubrication is required. |
6004 NR Bearing Structural Features & Performance Benefits
- Snap Ring Locating Feature: The fitted snap ring (outer diameter: 46.3 mm) acts as a positive stop against the housing, eliminating the need for complex shoulder machining and enabling compact, lightweight bearing arrangements.
- High-Speed Capability: The open design and stainless steel cage contribute to a high limiting speed of 24,000 rpm, making it suitable for demanding rotational applications.
- Robust Load Capacity: With a dynamic load rating of 2237 lbf and a static load rating of 1124 lbf, this bearing is designed to handle significant radial loads reliably.
- Precision and Reliability: Built to P0 tolerance class with tight dimensional control on the bore diameter and outside diameter, ensuring smooth operation and ease of installation.
6004 NR Bearing Typical Application Areas
This bearing is ideal for applications requiring secure axial location and high-speed performance. Common uses include:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Fans and Blowers
- Pumps and Compressors
- Material Handling Equipment
- Automotive Components (e.g., alternators, idler pulleys)
