6312-ZNR
6300 Series Snap Ring Bearings
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Part No.
Part No.
6312-ZNR
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
1.78 kg
Tolerance class
P0
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
60 mm
Bore diameter tolerance
-0.015mm to 0
Outside diameter
130 mm
Outside diameter tolerance
-0.018mm to 0
Width
31 mm
Width tolerance
-0.15mm to 0
Outer Ring Dimensions
Outer ring locating feature
Snap Ring (fitted)
Outside diameter of snap ring
139.7 mm
Width of snap ring
2.82 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
19154 lbf
Radial static load rating
11690 lbf
Limiting speed
7 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 44.69
/ each
In Stock
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6312-ZNR Bearing Product Overview & Core Advantages
The 6312-ZNR is a single row deep groove ball bearing designed for high-performance industrial applications. This metric bearing excels in handling substantial radial loads while offering reliable operation. A key distinguishing feature is its snap ring on the outer ring, which simplifies axial location within a housing, reduces design complexity, and ensures secure mounting. Manufactured with Chrome Steel rings and balls, and a Stainless Steel cage, it provides excellent durability and corrosion resistance. Pre-lubricated with grease and fitted with shields, it is a robust, ready-to-install solution for a wide range of machinery.
6312-ZNR Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 6312 | Basic bearing designation. '63' series indicates a medium width, deep groove radial ball bearing. '12' indicates a 60 mm bore diameter. |
| -Z | Denotes a shielded bearing on one side. This provides effective protection against contamination while offering low friction. |
| -NR | Indicates the outer ring has a snap ring groove and is supplied with a snap ring fitted. This feature aids in axial location and secure housing fit. |
6312-ZNR Bearing Structural Features & Performance Benefits
- Snap Ring for Simplified Assembly: The integrated snap ring (139.7 mm outside diameter, 2.82 mm width) eliminates the need for complex housing shoulders or end caps, reducing manufacturing costs and assembly time while ensuring a secure axial fit.
- Robust Load Capacity: With a dynamic load rating of 19,154 lbf and a static load rating of 11,690 lbf, this bearing is engineered to handle significant radial loads in demanding applications.
- Shielded & Pre-Lubricated Design: The shield protects the internal components from contaminants, and the factory-applied grease ensures immediate operation and long-term, low-maintenance performance within a temperature range of -30°C to 120°C.
- Precision & Stability: Built to P0 tolerance class and standard CN radial internal clearance, it offers reliable and consistent performance for general industrial use. The stainless steel cage enhances operational stability at the limiting speed of 7,000 rpm.
6312-ZNR Bearing Typical Application Areas
This versatile bearing is ideally suited for applications requiring secure mounting and reliable radial load support, including:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
