603
600 Series Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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603 Bearing Product Overview & Core Advantages
The 603 metric ball bearing is a fundamental single row deep groove ball bearing designed for reliable performance in compact spaces. Engineered to primarily handle radial loads, this open-type bearing is characterized by its minimal cross-section and low weight, making it an ideal choice for applications demanding high rotational speeds and precision. Manufactured to ABEC1 tolerance standards, it offers a cost-effective solution for a wide range of industrial and commercial equipment requiring consistent and dependable operation.
603 Bearing Model Code Explained, Specifications & Naming Convention
The model number 603 follows a standard industry designation for metric bearings. The code can be broken down as follows:
- 6: Indicates a single row deep groove ball bearing.
- 03: Specifies the bore diameter. In this case, a bore of 3 mm.
- Open (No Seal Suffix): The absence of a seal suffix (e.g., -2Z, -RS) denotes an open bearing, which allows for higher limiting speeds but requires an external lubrication system and is not shielded from contaminants.
603 Bearing Structural Features & Performance Benefits
The 603 bearing's performance is derived from its optimized design and material selection:
- High-Speed Capability: The open design and stainless steel cage minimize friction and drag, contributing to a high limiting speed of 56,000 rpm. This makes it suitable for demanding high-speed applications.
- Robust Load Capacity: With a dynamic load rating of 52 lbf and a static load rating of 34 lbf, this bearing provides reliable support for radial loads in its size class.
- Precision Engineering: Manufactured from chrome steel for both rings and balls, the bearing ensures durability and wear resistance. The specified MC3 radial internal clearance (0.002mm to 0.013mm) is optimized for general operating conditions.
- Compact and Lightweight: With dimensions of just 3mm (bore) x 9mm (OD) x 3mm (width) and a weight of only 0.84 grams, it is perfect for space-constrained and weight-sensitive designs.
603 Bearing Typical Application Areas
The 603 miniature ball bearing is widely used in various precision instruments and small machinery, including:
- Small Electric Motors and Fans
- Precision Medical Devices and Dental Handpieces
- Office Automation Equipment (e.g., Printers, Scanners)
- Radio Control Models (Drones, Cars)
- Instrumentation and Measurement Devices
- Computer Cooling Fans
