W 635 R-2Z
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 635 R-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0093 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
19 mm
Outside diameter tolerance
-0.009mm to 0
Width
6 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
22 mm
Flange thickness
1.5 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
456 lbf
Radial static load rating
198 lbf
Limiting speed
43 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 635 R-2Z Bearing Product Overview & Core Advantages
The W 635 R-2Z is a single row deep groove ball bearing designed for high-performance applications requiring precision and reliability. Engineered with stainless steel construction throughout (rings, balls, and cage), it offers excellent corrosion resistance and durability. Its key advantage lies in its ability to efficiently handle radial loads while accommodating moderate axial loads in both directions. The integrated shielded design (2Z) and factory-applied grease lubrication ensure long service life with minimal maintenance, making it ideal for compact, high-speed mechanisms demanding consistent operation.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing Series |
| 635 | Bore Diameter: 5 mm, Outer Diameter: 19 mm, Width: 6 mm |
| R | Flange on Outer Ring |
| 2Z | Non-Contact Shields on Both Sides for Contaminant Protection |
W 635 R-2Z Bearing Structural Features & Performance Benefits
- Optimized Deep Groove Raceway: The deep groove geometry enables smooth operation under radial loads and bidirectional axial loads, providing versatile load capacity in a compact bearing size.
- Full Stainless Steel Construction: Rings, balls, and cage made of stainless steel ensure high corrosion resistance, making the bearing suitable for harsh environments and applications requiring cleanliness.
- Shielded Design (2Z): Non-contact steel shields on both sides effectively exclude contaminants like dust and debris while minimizing friction, contributing to a limiting speed of 43,000 rpm and extended service life.
- Pre-Lubricated & Low Maintenance: Factory-filled grease and effective sealing reduce the need for relubrication, supporting maintenance-free operation within the specified temperature range (-30°C to 120°C).
- Flanged Outer Ring: The flange (outer diameter: 22 mm) simplifies axial positioning and mounting, reducing assembly time and cost in housed applications.
W 635 R-2Z Bearing Typical Application Areas
- Precision Instruments: Optical encoders, measuring devices, and laboratory equipment
- Small Electric Motors: Miniature DC motors, stepper motors, and fan motors
- Medical Devices: Dental handpieces, pumps, and small surgical tools
- Office Automation: Printers, scanners, and copiers
- Food Processing Equipment: Conveyors and dispensers where corrosion resistance is critical
