W 634
W Series Stainless Steel Miniature Bearings
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W 634 Bearing Product Overview & Core Advantages
The W 634 is a metric single row deep groove ball bearing engineered for high-performance applications requiring precision and reliability. Constructed entirely from stainless steel, it offers excellent corrosion resistance. This open-type bearing is designed to accommodate primarily radial loads and is characterized by its compact design with a 4 mm bore, 16 mm outside diameter, and 5 mm width. Its high limiting speed of 63,000 rpm makes it suitable for demanding, high-speed operations.
W 634 Bearing Model Code Explained, Specifications & Naming Convention
The model designation W 634 follows a standard industry numbering system. Below is a breakdown of its key characteristics:
- W: Manufacturer's series prefix.
- 6: Indicates a single row deep groove ball bearing.
- 3: Denotes the medium duty dimension series.
- 4: Specifies a bore diameter of 4 mm.
- No Suffix: The absence of additional suffixes confirms an open design (no seals or shields), a standard P0 tolerance class, and CN radial internal clearance.
W 634 Bearing Structural Features & Performance Benefits
The W 634 delivers robust performance through its optimized design:
- Full Stainless Steel Construction: The rings, balls, and cage are all made from stainless steel, providing superior corrosion resistance and durability in harsh environments, aligning with ROHS and REACH compliance.
- High-Speed Capability: The precision-ground components and stable stainless steel cage contribute to a high limiting speed, enabling reliable operation in fast-rotating assemblies.
- Precision Tolerances: Manufactured to P0 tolerance class with a CN radial internal clearance, this bearing ensures consistent performance, smooth running, and precise shaft positioning.
- Wide Temperature Range: Operates effectively within a temperature range of -30°C to 120°C, making it versatile for various operational conditions.
W 634 Bearing Typical Application Areas
The compact size, high-speed performance, and corrosion resistance of the W 634 bearing make it ideal for a wide range of precision applications, including:
- Small electric motors and miniature gearboxes
- Medical and dental handpieces
- Precision instruments and optical devices
- Office automation equipment (e.g., printers, scanners)
- Radio-controlled models and drones
