SMR84 2rs
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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SMR84 2rs Bearing Product Overview & Core Advantages
The SMR84 2RS is a sealed miniature ball bearing engineered for precision applications requiring compact dimensions and reliable performance. Constructed entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance. Its primary advantage lies in its ability to handle radial loads efficiently while the 2RS double-contact seals protect against contamination, making it suitable for applications demanding high reliability and low maintenance in a compact footprint.
SMR84 2rs Bearing Model Code Explained, Specifications & Naming Convention
- SMR84: Denotes the bearing series with a 4mm bore and 8mm outside diameter.
- 2RS: Indicates the bearing is fitted with two rubber seals (RS), one on each side, providing effective protection against dust and moisture.
SMR84 2rs Bearing Structural Features & Performance Benefits
Compact & Robust Design: The single row design with a width of just 3mm makes it ideal for space-constrained applications. The all-stainless-steel construction ensures dimensional stability and resistance to corrosion.
Sealed for Protection & Longevity: The nitrile rubber (NBR) seals (2RS) effectively retain lubricant and exclude contaminants, contributing to a longer service life and reduced maintenance needs.
Precision Performance: Manufactured to ABEC1 tolerance class with a controlled MC3 radial internal clearance (0.002mm to 0.013mm), ensuring smooth and consistent operation.
Load and Speed Capacity: With a dynamic load rating of 68 lbf and a limiting speed of 50,400 rpm, it is capable of handling significant loads at high rotational speeds for its size.
SMR84 2rs Bearing Typical Application Areas
The SMR84 2RS is ideally suited for:
- Small Precision Motors (e.g., drone motors, miniature DC motors)
- Medical Devices and Instrumentation (e.g., surgical handpieces, pumps)
- Office Automation Equipment (e.g., printers, scanners)
- Radio-Controlled (RC) Models and small gearboxes
- Various miniature mechanical systems requiring reliable, compact bearings.
