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SKF
Self-Aligning Ball B. SKF 2220 KM
- Technical data
- Inner diameter
- 100 mm
- Outer diameter
- 180 mm
- Width
- 46 mm
- Material
- Standard bearing steel
- Ball rows
- Double row bearing
- Seal
- None, open bearing
- Cage
- Brass cage
- Clearance
- Normal radial clearance
- Running accuracy
- Tolerance class P0/PN2 / ABEC 1
- Bore
- Tapered bore (1:12)
- Inner ring
- Standard version
- Temperature range
- -30 to +150 °C
- Weight
- 4,8 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 2 | 15,68 € | 297,97 € |
| 5 | 31,37 € | 282,28 € |
Self-Aligning Ball B. SKF 2220 KM
The 2220 KM double-row self-aligning ball bearing compensates for misalignment during operation and, with dimensions of 100 × 180 × 46 mm, provides stable guidance for demanding shaft mountings.
The SKF 2220 KM self-aligning ball bearing accommodates shafts with an inner diameter of 100 mm and an outer diameter of 180 mm, with a width of 46 mm. Thanks to the shared spherical raceway in the outer ring, this double-row roller bearing accommodates misalignment between the inner and outer rings. Manufactured from standard rolling-element bearing steel 100Cr6 to tolerance class P0/PN (ABEC 1), the open design is rated for operating temperatures from -30 to +150 degrees.
When is the 2220 KM self-aligning ball bearing recommended for use?
Designs with long shafts or flexible housings are prone to deflection and misalignment during operation. This bearing compensates for both static and dynamic angular misalignments during operation, thereby preventing edge loading on the rolling elements. As this is an open design without integrated sealing washers, select a lubricant suitable for the operating speed and environment. An external housing seal serves to keep contaminants away from the bearing seat.
What are the characteristics of the brass cage and tapered bore?
The suffix ‘KM’ denotes the design with a tapered bore with a taper ratio of 1:12 and a solid brass cage. Brass is suitable for high acceleration forces, vibrations and the specified temperature range. The tapered inner ring allows mounting directly onto a tapered shaft journal or, using a clamping or withdrawal sleeve, onto cylindrical shafts. You can adjust the remaining normal bearing clearance via the axial displacement.
What are the key technical features of the 2220 KM self-aligning ball bearing?
Double-row rolling elements run in two grooves in the inner ring and along a continuous hollow spherical surface in the outer ring. This design compensates for misalignment, whilst the dimensions – a 100 mm bore, 180 mm outside diameter and 46 mm width – provide a high radial load-carrying capacity.
What does the suffix ‘KM’ mean for this bearing?
The letter K indicates that the inner ring has a tapered bore with a pitch ratio of 1:12. The following M stands for a solid brass cage, which guides the rolling elements and keeps them at a uniform distance.
How is a bearing with a tapered bore fitted?
The bearing is mounted either directly onto a tapered shaft seat or, using a suitable locking sleeve, onto a cylindrical shaft. The radial bearing clearance is reduced when the bearing is pushed axially onto the taper, which allows the interference fit to be adjusted precisely.
What type of lubrication does the open roller bearing require?
As the design does not feature any integrated seals, initial lubrication with a suitable rolling-bearing grease or lubricating oil is required prior to commissioning. The open design allows the lubricant in the housing to be replaced and covers a temperature range from -30 to +150 degrees.
What is the clearance in the 2220 KM spherical ball bearing?
This model is manufactured with standard radial bearing clearance. When the tapered inner ring is pressed onto the shaft or sleeve, the initial radial clearance is reduced; therefore, the remaining clearance should be checked during installation.
What material is the self-aligning ball bearing made of?
The inner and outer rings, as well as the balls, are made from standard roller bearing steel 100Cr6. The cage is made from brass. This combination of materials ensures dimensional stability within tolerance class P0/PN (ABEC 1).
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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