61805/W64
618 & 619 Series Thin Section Bearings
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Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
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61805/W64 Bearing Product Overview & Core Advantages
The 61805/W64 is a metric miniature deep groove ball bearing engineered for high-precision applications demanding compact design and reliable performance. This single row bearing is optimized for radial loads and offers smooth operation. Its key advantages include a solid oil lubrication system for maintenance-free operation, a wide operating temperature range, and compliance with ROHS and REACH standards, making it a robust and environmentally conscious choice for compact assemblies.
61805/W64 Bearing Model Code Explained, Specifications & Naming Convention
- 61805: Standard designation for a metric series deep groove ball bearing with a 25mm bore and 37mm outside diameter.
- W64: This suffix indicates the bearing is pre-lubricated with Solid Oil, a polymer matrix saturated with lubricant, providing long-term, maintenance-free service and excellent resistance to lubricant washout.
61805/W64 Bearing Structural Features & Performance Benefits
Constructed entirely from chrome steel for the rings, balls, and cage, this bearing ensures high durability and consistent performance. The deep groove raceway geometry is fundamental for handling radial dynamic loads up to 980 lbf. The integrated Solid Oil lubrication is a defining feature, eliminating the need for re-lubrication, preventing oil leakage, and ensuring consistent performance across its specified temperature range of -30°C to 120°C. Manufactured to ABEC 1 | ISO P0 tolerance class with standard CN radial internal clearance, it provides a cost-effective solution for applications requiring reliable, precision rotation.
61805/W64 Bearing Typical Application Areas
This bearing's compact bearing dimensions (25x37x7 mm) and maintenance-free design make it ideal for:
- Small electric motors and fans
- Precision instruments and medical devices
- Office automation equipment (e.g., printers, scanners)
- Low-power gearboxes and drive systems
