W 604 R-2Z
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 604 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0023 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
12 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
13.5 mm
Flange thickness
1 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
121 lbf
Radial static load rating
40 lbf
Limiting speed
63 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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W 604 R-2Z Bearing Product Overview & Core Advantages
The W 604 R-2Z is a metric single row deep groove ball bearing designed for exceptional performance in compact applications. Constructed entirely from stainless steel, it offers superior corrosion resistance. Its key advantage lies in its ability to handle significant radial loads while its shielded (2Z) design retains factory-fresh grease lubrication and protects against contaminant ingress, ensuring long-term reliability and low maintenance operation. This bearing is ideal for applications demanding high precision, cleanliness, and durability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing |
| 604 | Bearing series and size designation (4mm bore, 12mm OD, 4mm width) |
| R | Flanged Outer Ring |
| 2Z | Non-contact Shields on Both Sides |
W 604 R-2Z Bearing Structural Features & Performance Benefits
- Flanged Design for Easy Mounting and Positioning: The integrated flange on the outer ring simplifies axial location within a housing, reducing assembly time and cost.
- Effective Contamination Protection: The non-contact shields (2Z) effectively protect the bearing's internal components from dust and other contaminants while minimizing friction, contributing to the high limiting speed of 63,000 rpm.
- Corrosion-Resistant Construction: Made entirely from stainless steel (rings, balls, and cage), this bearing is ideal for applications exposed to moisture, chemicals, or requiring wash-downs.
- Optimized for Radial Loads: The deep groove raceway and stainless steel construction are engineered to handle the specified radial dynamic and static load ratings efficiently.
- Ready-to-Use and Low Maintenance: Pre-lubricated with grease, the bearing is ready for immediate installation and offers long-term, maintenance-free operation within its specified temperature range.
W 604 R-2Z Bearing Typical Application Areas
This versatile bearing is commonly specified in:
- Precision Instruments and medical devices
- Small Electric Motors and miniature gearboxes
- Food processing and packaging machinery (due to stainless steel and ROHS/REACH compliance)
- Office automation equipment (e.g., printers, scanners)
- Radio-controlled models and drones
