SMR148zz
SMR Series Stainless Steel Miniature Bearings
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Part No.
Part No.
SMR148zz
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
2.19 g
Tolerance class
ABEC1
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
14 mm
Outside diameter tolerance
-0.008mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
1.588 mm
Ball quantity
10
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
141 lbf
Radial static load rating
63 lbf
Limiting speed
34.2 X 1000 rpm
Lubrication
Required
Radial internal clearance
MC3
Radial internal clearance
0.002mm to 0.013mm
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Shield material
300 Series Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 1.35
/ each
In Stock
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Product Overview and Core Advantages
The SMR148zz is a precision miniature ball bearing designed for applications demanding high reliability and compact design. As a single row, shielded metric bearing, it is engineered to handle primarily radial loads efficiently. Its construction from stainless steel throughout provides excellent corrosion resistance, making it suitable for harsh environments. The bearing is characterized by its small bore diameter of 8 mm and overall compact dimensions, offering a robust solution for high-speed operation up to 34,200 rpm, as defined by its limiting speed.
SMR148zz Bearing Model Code Explained, Specifications & Naming Convention
The model number SMR148zz can be broken down to understand its key technical features:
- SMR: Indicates the manufacturer series for miniature stainless steel bearings.
- 14: Specifies the bore diameter code, corresponding to an 8 mm bore.
- 8: Represents the outside diameter code, corresponding to a 14 mm OD.
- zz: Denotes that the bearing is equipped with shields on both sides (non-contact). This helps protect the internal components from large particulate contaminants while minimizing friction.
Structural Features and Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage, 10 precision balls, and shielded design contributes to a high limiting speed of 34,200 rpm, making it an effective high-speed bearing.
- Corrosion Resistance: Manufactured entirely from stainless steel (rings, balls, cage, and shields), this bearing is ideal for applications exposed to moisture or corrosive agents.
- Precision and Low Noise: Built to ABEC1 tolerance class with a controlled radial internal clearance (MC3 / 0.002mm to 0.013mm), it ensures smooth and quiet operation, which is critical in precision instruments.
- Compact and Lightweight: With a width of just 4 mm and a weight of only 2.19 grams, it is perfectly suited for space-constrained applications without sacrificing performance.
SMR148zz Bearing Typical Application Areas
The SMR148zz is widely used in industries and devices where small size, high speed, and reliability are paramount. Key applications include:
- Small precision electric motors and spindles
- Medical and dental hand tools
- Optical encoders and scanners
- Radio control models (drones, RC cars)
- Office automation equipment (printers, scanners)
- Precision instruments and laboratory equipment
