S6918
S6900 Series Stainless Steel Thin Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S6918
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
565 g
Tolerance class
ABEC-1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.02mm to 0
Outside diameter
125 mm
Outside diameter tolerance
-0.018mm to 0
Width
18 mm
Width tolerance
-0.200mm to 0
Performance
Temperature range
-86 to 230 °F
Radial dynamic load rating
6555 lbf
Radial static load rating
6394 lbf
Limiting speed
4.5 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.012mm to 0.036mm
Radial internal clearance
C0
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:
$ 34.3
/ each
In Stock
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S6918 Bearing Product Overview & Core Advantages
The S6918 is a metric single row deep groove ball bearing engineered for precision radial load applications. Constructed entirely from stainless steel (rings, balls, and cage), it offers excellent corrosion resistance and durability. Its open design allows for versatile lubrication options, while the ABEC-1 precision class ensures reliable performance in applications demanding smooth operation and high rotational accuracy. This bearing is ideal for scenarios requiring a compact, high-performance solution with a wide operating temperature range from -86 to 230 °F.
S6918 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S6918 | Basic bearing designation indicating a single row deep groove ball bearing with a 90mm bore, 125mm OD, and 18mm width. |
| Open (Seal Type) | No integral seals or shields. This allows for higher limiting speeds and custom lubrication schemes but requires a clean operating environment. |
| ABEC-1 | Specifies the precision tolerance class, ensuring controlled dimensional accuracy and runout for smooth operation. |
| C0 (Clearance) | Indicates a standard radial internal clearance (0.012mm to 0.036mm), suitable for most general applications. |
S6918 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: Provides superior corrosion resistance and is ideal for applications exposed to moisture, chemicals, or washdown environments, while also being ROHS and REACH compliant.
- Deep Groove Raceway: Optimized for handling high radial dynamic loads (6555 lbf) and moderate axial loads in both directions, making it a versatile choice.
- High-Speed Capability: The open design and stainless steel cage contribute to a high limiting speed of 4,500 rpm, enabling efficient performance in demanding applications.
- Precision Ground: Manufactured to ABEC-1 tolerances, this bearing ensures low noise, low vibration, and consistent performance, which is critical for smooth rotational motion.
S6918 Bearing Typical Application Areas
- Food and Beverage Processing Equipment (due to stainless steel and corrosion resistance)
- Medical and Laboratory Devices (requiring precision and clean operation)
- Chemical Handling Pumps and Mixers
- Precision Instruments and Optical Equipment
- Electric Motors and Small Gearboxes in harsh environments
