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SKF
Deep Groove Ball Bearings SKF 61818
- Technical data
- Inner diameter
- 90 mm
- Outer diameter
- 115 mm
- Width
- 13 mm
- Material
- Standard bearing steel
- Ball rows
- Single row bearing
- Seal
- None, open bearing
- Cage
- Sheet steel cage
- Clearance
- Normal 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
- -20 to +120 °C
- Weight
- 0,284 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 15 | 3,95 € | 75,17 € |
| 30 | 7,91 € | 71,21 € |
Deep Groove Ball Bearings SKF 61818
The SKF 61818 deep groove ball bearing is a single-row, open roller bearing with compact overall dimensions of 90 × 115 × 13 mm, designed for space-saving applications.
The 61818 deep groove ball bearing is an open, single-row rolling bearing designed primarily to support radial loads whilst requiring minimal radial installation space. With a bore of 90 mm, an outside diameter of 115 mm and a width of 13 mm, this design belongs to the narrow series. The design, made from standard roller bearing steel (100Cr6) with a sheet steel cage, is suitable for operating temperatures ranging from -20 to +120 degrees. This design is particularly recommended for shaft guides where installation space is severely limited.
In which applications is the narrow deep-groove ball bearing 61818 used?
Design engineers prefer to use the 61818 deep-groove ball bearing in applications with limited installation space, where the shaft diameter must be large in relation to the housing diameter. The bearing accommodates radial loads as well as moderate axial forces in both directions. Typical applications include general mechanical engineering, gearboxes or assemblies with external housing seals.
As this is an open bearing without integrated sealing washers, its use requires a clean installation environment or a seal provided by the customer. This allows the lubricant to reach the rolling elements unhindered, which promotes heat dissipation during operation.
What is important to consider with the open design and standard radial clearance?
With the open version of the deep groove ball bearing 61818, you must apply the lubricant precisely before commissioning. The standard radial bearing clearance, in conjunction with tolerance class P0 (ABEC 1), provides a balanced operating clearance under normal operating conditions. Check the fit of the shaft and housing seats in advance to prevent the bearing clearance from being unduly restricted.
The integrated sheet steel cage guides the rolling elements and operates within the permissible temperature range of -20 to +120 degrees. During design, care must be taken to ensure that no dirt particles from outside penetrate the unsealed bearing, in order to prevent premature wear of the raceways.
What are the dimensions of the 61818 deep-groove ball bearing?
With a bore of 90 mm, an outside diameter of 115 mm and a width of 13 mm, this roller bearing belongs to the narrow series. Thanks to this cross-section, this design is suitable for applications where, despite a large shaft diameter, there is only limited radial installation space available within the housing.
What features does the open version of this bearing offer?
As this design does not feature integrated seals or cover plates, it allows lubricants such as grease or oil to reach the raceways and balls freely. To ensure long-term operation, the housing must be sealed on site to prevent lubricant loss and the ingress of dirt particles.
What does the specification for the standard radial bearing clearance mean?
This parameter describes the factory-set radial clearance between the rolling elements and the raceways when the bearing is unloaded. The standard clearance is designed for standard fits and normal operating temperatures. It helps to ensure that the rings do not become distorted after being fitted onto the shaft and housing.
Within what temperature range can the 61818 deep-groove ball bearing be operated?
The version made from standard roller bearing steel (100Cr6) with a sheet steel cage is designed for temperatures ranging from -20 to +120 degrees. Within this range, the material and the cage retain their dimensional stability. When selecting the lubricant, you should ensure that its thermal suitability is appropriate for the intended application.
What does the tolerance class P0 or ABEC 1 mean?
Classification according to tolerance class P0 or ABEC 1 indicates the standard accuracy for dimensional, geometric and running characteristics. It defines permissible deviations for bore, outside diameter and axial run-out. This tolerance class is designed for standard applications in mechanical engineering and general drive technology.
What are the cage and rings of the bearing made of?
The rings and rolling elements of this bearing are made from standard rolling-bearing steel (100Cr6). A sheet steel cage is used to guide and space the balls. This combination of materials provides the necessary strength under dynamic loads and ensures smooth running across the entire operating range.
SKF Group
Sven Wingquists Gata 2, 415 50 Gothenburg, Sweden
info@skf.com, https://www.skf.com/uk/footer/site-ownership
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