W 61704 R-2ZS
W Series Stainless Steel Flanged Bearings
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Part No.
Part No.
W 61704 R-2ZS
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0062 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.01mm to 0
Outside diameter
27 mm
Outside diameter tolerance
-0.009mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
28.5 mm
Flange thickness
0.8 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
132 lbf
Radial static load rating
88 lbf
Limiting speed
26 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 61704 R-2ZS Bearing Product Overview & Core Advantages
The W 61704 R-2ZS is a single row deep groove ball bearing designed for exceptional performance in compact and precision applications. Engineered with stainless steel construction throughout, it offers superior corrosion resistance. Its key advantage lies in its ability to efficiently handle radial loads while its shielded design (2ZS) provides robust protection against contaminant ingress, ensuring long-term reliability and consistent operation. This bearing is characterized by its low friction, high limiting speed, and is pre-lubricated for maintenance-free service, making it an ideal choice for applications demanding high precision and durability in a minimal envelope.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance & Advantage |
|---|---|---|
| W | Stainless Steel Bearing | Indicates the bearing rings and balls are made from stainless steel, providing excellent corrosion resistance. |
| 61704 | Standard Bearing Designation | Denotes a metric, single row deep groove ball bearing with a 20mm bore, 27mm OD, and 4mm width. |
| R | Flanged Outer Ring | Signifies an outer ring with an integral flange, facilitating simplified axial location and mounting. |
| 2ZS | Double Shields, Both Sides | Specifies non-contact shields on both sides, effectively retaining grease and excluding contaminants while maintaining low torque and high speed capability. |
W 61704 R-2ZS Bearing Structural Features & Performance Benefits
- Robust Stainless Steel Construction: The use of stainless steel for the rings, balls, and cage ensures high corrosion resistance, making the bearing suitable for harsh environments and applications requiring washdown.
- Flanged Outer Ring for Easy Installation: The integrated flange on the outer ring simplifies bearing mounting and positioning within a housing, reducing assembly time and cost.
- Optimized Deep Groove Raceway: The deep groove geometry of the inner and outer rings is designed for optimal radial load carrying capacity and smooth operation.
- Double Shielded Protection: The 2ZS shields provide a high degree of protection against dust and other particulates, retaining the pre-applied grease lubrication for a long service life without maintenance.
- High-Speed Capability: The precision-ground components and effective lubrication contribute to a high limiting speed of 26,000 rpm, suitable for demanding high-speed applications.
W 61704 R-2ZS Bearing Typical Application Areas
- Medical and Dental Equipment: Small motors, pumps, and handpieces where corrosion resistance, compact size, and reliability are critical.
- Food Processing and Packaging Machinery: Conveyor rollers, agitators, and filling machines that require frequent washdown and hygienic operation.
- Precision Instruments and Optical Devices: Scanners, encoders, and small gearboxes demanding high running accuracy and low noise.
- Small Electric Motors and Fans: Providing reliable support in compact AC/DC motors and miniature cooling fans.
- Office Automation Equipment: Printers, copiers, and scanners where space is limited and long, maintenance-free life is expected.
