R156
R 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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R156 Bearing Product Overview & Core Advantages
The R156 is a precision-engineered single row deep groove ball bearing designed for high-performance applications. Manufactured to ABEC1 precision class standards, it offers reliable operation and excellent value for general industrial use. Its compact inch series design (0.1875" bore × 0.3125" OD × 0.1094" width) makes it ideal for space-constrained assemblies requiring smooth rotational performance under radial loads. The bearing features chrome steel construction throughout for durability and consistent performance across a wide temperature range from -86 to 230 °F.
R156 Bearing Model Code Explained, Specifications & Naming Convention
| Code Element | Technical Meaning |
|---|---|
| R156 | Standard inch series bearing designation with specific dimensional configuration |
| Open | No seals or shields, allowing for maximum speed capability and easy relubrication |
| ABEC1 | Precision tolerance class ensuring consistent performance and interchangeability |
| MC3 | Normal radial internal clearance group (0.00008" to 0.0005") for most applications |
R156 Bearing Structural Features & Performance Benefits
Optimized Load Capacity: The single row deep groove raceway design efficiently handles radial loads up to 69 lbf dynamic and 27 lbf static, while also accommodating moderate axial loads in both directions.
High-Speed Capability: With a limiting speed of 53,000 rpm and stainless steel cage construction, the bearing maintains stability at high rotational velocities, reducing vibration and wear.
Precision Engineering: Manufactured to ABEC1 tolerance standards with tight dimensional controls (bore/OD tolerance: -0.0003" to 0"), ensuring consistent performance and easy installation.
Durable Construction: Chrome steel rings and balls provide excellent wear resistance and fatigue life, while the stainless steel cage offers corrosion resistance and cage integrity.
Flexible Application: The open design allows for custom lubrication strategies and the MC3 radial clearance accommodates various operating conditions and thermal expansions.
R156 Bearing Typical Application Areas
- Small electric motors and miniature DC motors
- Precision instruments and laboratory equipment
- Office automation devices including printers and scanners
- Medical devices and dental handpieces
- Robotics and small mechanism assemblies
- Textile machinery components and spindles
- Pump applications requiring compact bearing solutions
