SMR41x
SMR Series Stainless Steel Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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SMR41x Bearing Product Overview & Core Advantages
The SMR41x series is a miniature deep groove ball bearing engineered for high-precision applications requiring compact design and reliable performance in radial load conditions. Constructed entirely from stainless steel, it offers excellent corrosion resistance. Its open design allows for versatile lubrication options, making it suitable for a wide operating temperature range from -30°C to 110°C. This bearing is ideal for applications demanding a combination of small size, durability, and consistent operation.
SMR41x Bearing Model Code Explained, Specifications & Naming Convention
The model number SMR41x and its associated specifications can be interpreted as follows:
- SMR41x: Denotes the bearing series, indicating a specific miniature bearing design.
- Open (Seal Type): The bearing is unsealed, allowing for custom lubrication and higher potential speeds but requiring a clean operating environment.
- ABEC1: Specifies the tolerance class, indicating standard precision levels suitable for many general-purpose applications.
- MC3: Indicates the radial internal clearance group, which is C3, representing a greater than normal clearance for applications involving thermal expansion.
SMR41x Bearing Structural Features & Performance Benefits
The performance of the SMR41x is a direct result of its specific construction:
- Compact & Lightweight: With a bore diameter of just 1.2 mm, an outside diameter of 4 mm, and a weight of only 0.11 g, it is designed for space-constrained miniature assemblies.
- Robust Load Capacity: The deep groove raceway and 7-ball stainless steel construction effectively support radial dynamic loads up to 23 lbf.
- High-Speed Capability: The stainless steel cage and optimized geometry contribute to a high limiting speed of 130,000 rpm, making it a capable high-speed bearing.
- Material Integrity: All components, including rings, balls, and cage, are made from stainless steel, ensuring consistent performance and resistance to corrosion.
SMR41x Bearing Typical Application Areas
The SMR41x is ideally suited for a variety of high-precision, miniature devices, including:
- Small precision motors and stepper motors
- Medical instruments and dental handpieces
- Optical encoders and scanning devices
- Miniature gearboxes and robotics
- Small drones and RC models
