SMR148
SMR Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
SMR148
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.9 g
Tolerance class
ABEC1
Seal type
Open
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
3.5 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
0.002mm to 0.013mm
Radial internal clearance
MC3
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
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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SMR148 Bearing Product Overview & Core Advantages
The SMR148 is a metric miniature ball bearing engineered for precision applications requiring compact design and reliable performance. Constructed entirely from stainless steel, it offers excellent corrosion resistance. As a single row deep groove ball bearing, it is primarily designed to support radial loads efficiently. Its compact dimensions (8mm bore, 14mm OD, 3.5mm width) and low weight (1.9g) make it ideal for space-constrained assemblies. Manufactured to ABEC1 tolerance class, this bearing provides a cost-effective solution for applications demanding good running accuracy and high-speed capability up to 34,200 rpm.
SMR148 Bearing Model Code Explained, Specifications & Naming Convention
The model number SMR148 can be broken down to understand its key features:
- SMR: Typically denotes a series of miniature, deep groove ball bearings.
- 1: Often references a specific internal design or generation.
- 48: Indicates a bore diameter of 8mm (common in some manufacturer's coding systems).
- Open (Seal Type): Requires external sealing for contaminated environments.
- ABEC1 (Tolerance Class): Standard precision grade for reliable performance.
- MC3 (Radial Internal Clearance): Standard clearance for general purpose use.
- Stainless Steel Construction: Provides corrosion resistance for the rings, balls, and cage.
SMR148 Bearing Structural Features & Performance Benefits
The SMR148 leverages a robust single row deep groove raceway design. This structure, combined with 10 precision balls, ensures smooth operation and low noise. The use of stainless steel for all core components (rings, balls, and cage) not only prevents corrosion but also ensures dimensional stability across its operating temperature range (-30°C to 110°C). The ABEC1 precision rating guarantees consistent running accuracy, contributing to reduced vibration. With a radial dynamic load rating of 141 lbf and a limiting speed of 34,200 rpm, it delivers a strong performance-to-size ratio. The standard MC3 radial internal clearance makes it versatile for a wide range of operating conditions.
SMR148 Bearing Typical Application Areas
The compact size, high-speed capability, and corrosion resistance of the SMR148 make it suitable for a variety of precision instruments and small machinery. Common applications include:
- Small Electric Motors (e.g., in drones, RC models, small fans)
- Precision Medical Devices and laboratory equipment
- Office Automation Equipment such as printers and scanners
- Instrumentation and measurement devices
- Low-torque robotic joints and miniature gearboxes
