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Bearings
Bearings
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Housings/housing Units
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Linear Technology
Linear Technology
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V-Belts
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Seals
Seals
FAG
Deep Groove Ball Bearings FAG 6218 -C3
- Technical data
- Inner diameter
- 90 mm
- Outer diameter
- 160 mm
- Width
- 30 mm
- Material
- Standard bearing steel
- Ball rows
- Single row bearing
- Seal
- None, open bearing
- Cage
- Sheet steel cage
- Clearance
- Slightly increased radial clearance
- Running accuracy
- Tolerance class P0/PN2 / ABEC 1
- Current insulation
- No current insulation
- Bore
- Cylindrical bore
- Outer ring
- Without flange/groove
- Material of rolling elements
- Standard bearing steel
- Temperature range
- -30 to +150 °C
- Weight
- 2,15 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 15 | 4,93 € | 93,67 € |
| 30 | 9,85 € | 88,75 € |
Deep Groove Ball Bearings FAG 6218 -C3
The FAG 6218 -C3 deep-groove ball bearing (90x160x30 mm) offers increased bearing clearance for industrial drives and rolling bearing arrangements subject to thermal stress.
The 6218-C3 deep groove ball bearing is a single-row radial ball bearing from FAG designed for medium to heavy-duty shaft mountings. The design primarily accommodates radial forces as well as axial forces in both directions. Manufactured from standard roller bearing steel 100Cr6 and fitted with a sheet steel cage, this open bearing is suitable for use in a temperature range from –20 to +150 degrees Celsius. The open design allows lubricant to be applied directly during operation.
What is the 6218-C3 deep groove ball bearing suitable for in industrial plants?
The bearing is used in industrial plant where shafts with a diameter of 90 mm are supported and where elevated operating temperatures may occur. Typical applications include those with a continuous supply of lubricant via oil or grease circulation systems within the housing. Thanks to the uninterrupted raceways, the design guides the rolling elements when load directions change. The component is suitable for designs that require the absorption of combined radial and axial loads.
How does the C3 bearing clearance differ from the standard version?
The designation C3 indicates a slightly increased radial bearing clearance compared with the standard version. The internal bearing clearance between the balls and raceways is set slightly larger ex works. This clearance compensates for operational thermal expansion of the shaft or interference fits when pressing in the inner ring, in order to prevent the rolling elements from seizing. The bearing complies with tolerance class P0/PN (ABEC 1) and has an outer ring without a flange or groove.
What are the key features of the 6218-C3 deep-groove ball bearing?
A single-row radial ball bearing from FAG with a 90 mm bore, 160 mm outer diameter and 30 mm width. It has an increased bearing clearance in accordance with the C3 classification and is available as an open version without integrated sealing washers, which allows direct access to the lubricant within the housing.
What are the dimensions of the 6218-C3 deep-groove ball bearing?
The component has an internal diameter of 90 mm, an external diameter of 160 mm and an axial width of 30 mm. The outer ring is cylindrical in design and has neither a flange nor a ring groove; it is suitable for cylindrical housing bores to standard tolerances.
Why is the increased clearance (C3) important for this bearing?
C3 bearing clearance means that the radial clearance, when the bearing is unmounted, is greater than the standard range. If temperature differences occur between the shaft and the housing during operation, or if the inner ring is tightly fitted to the shaft, the increased clearance helps to counteract radial stress on the rolling elements.
What type of lubrication does this open deep-groove ball bearing require?
As this model does not have integrated seals, external lubrication is required before commissioning. Depending on the ambient conditions and the design of the bearing housing, you can either fill the bearing with roller bearing grease or integrate it directly into a sealed oil bath.
What temperature range is the bearing suitable for?
The permissible operating temperature range is between -20 and +150 degrees Celsius. The built-in sheet steel cage and the 100Cr6 roller bearing steel retain their dimensional stability within this range. The lubricant selected must be suited to the respective operating temperature.
What is the tolerance class of the 6218-C3 deep-groove ball bearing?
The ball bearing complies with standard tolerance class P0 (normal tolerance PN), which is comparable to ABEC 1. It has no integrated electrical insulation and is suitable for standard industrial manufacturing tolerances for shaft and housing seats.
Schaeffler Technologies AG & Co. KG
Industriestraße 1-3, 91074 Herzogenaurach, Germany
info.de@schaeffler.com, https://www.schaeffler.de/de/meta/impressum/
10015514