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SKF
Cylindrical Roller Bearings SKF NU220 ECP
- Technical data
- Inner diameter
- 100 mm
- Outer diameter
- 180 mm
- Width
- 34 mm
- Roller rows
- Single row bearing
- Seal
- None, open bearing
- Cage
- Polyamide cage
- Clearance
- Normal radial clearance
- Running accuracy
- Dimensional accuracy P0/PN or ABEC 1, running accuracy P6 or ABEC 3
- Current insulation
- No current insulation
- Bore
- Cylindrical bore
- Outer ring
- Without groove/lubrication holes
- Version2
- Improved interior construction
- Design
- Floating bearing, inner ring removable on both sides
- Temperature range
- -30 to +120 °C
- Version
- Explorer
- Weight
- 3,389 kg
| Scale quantity | Your discount | Unit price |
|---|---|---|
| 2 | 12,76 € | 242,27 € |
| 5 | 25,51 € | 229,52 € |
Cylindrical Roller Bearings SKF NU220 ECP
The SKF NU220 ECP single-row cylindrical roller bearing, as an open idler bearing, accommodates high radial loads and compensates for axial changes in shaft length.
The NU220 ECP cylindrical roller bearing is an open, single-row roller bearing from SKF in the Explorer design, intended for demanding industrial applications. The design features a bore of 100 mm, an outer diameter of 180 mm and a width of 34 mm. Thanks to its cylindrical rollers, the roller bearing transmits high radial forces. The outer ring has solid flanges, whilst the inner ring is flangeless. This geometry allows for axial displacement of the shaft relative to the housing.
What is the NU220 ECP cylindrical roller bearing suitable for in operation?
This rolling bearing is suitable for mounting positions subject to high radial loads where thermal length changes in the shaft occur. Typical applications are found in general mechanical and plant engineering under purely radial loads. As it is a NU-type non-locating bearing, the bearing accommodates purely radial loads. The flangeless inner ring can be removed from either side, which facilitates the separate installation of the inner and outer rings in confined spaces.
What are the features of the polyamide cage and the ECP design?
The suffix ECP denotes an optimised internal design featuring a lightweight polyamide cage. This cage guides the rollers quietly and is suitable for a temperature range of –30 to +120 degrees Celsius. Dimensional accuracy complies with tolerance class P0 (ABEC 1), whilst running accuracy is manufactured to P6 (ABEC 3). As the bearing is of open design and the outer ring has no lubrication groove, the bearing housing requires external sealing and a targeted supply of lubricant.
What are the dimensions of the NU220 ECP cylindrical roller bearing?
The bearing has a bore of 100 mm, an outer diameter of 180 mm and a width across flats of 34 mm. These dimensions enable it to be fitted precisely onto suitable shafts and into housing bores in mechanical engineering applications. Before fitting, check the dimensional tolerances of the shaft and the bearing housing.
What does the NU design designation mean for this roller bearing?
In the NU design, the outer ring has two fixed guide flanges, whilst the inner ring has no flanges. This allows the inner ring to be removed from either side. The bearing acts purely as a non-locating bearing, transmits high radial forces and compensates for axial changes in shaft length without constraint within the raceway.
What is the temperature range for which the bearing is designed?
The NU220 ECP cylindrical roller bearing can be used within an operating temperature range of -30 to +120 degrees. This operating range is made possible by the integrated polyamide cage and the thermal stability of the bearing rings. Select the lubricant appropriate for the actual operating temperature at the respective bearing location.
What is the bearing clearance for this version?
This model features standard radial bearing clearance. This design is suitable for standard mounting fits and moderate temperature differences between the inner and outer rings during operation. In the event of thermally induced expansion, the clearance ensures that the roller elements can move freely.
How is the open cylindrical roller bearing sealed and lubricated?
As this design does not feature any integrated seals, sealing must be achieved via the surrounding housing structure. The bearing has no groove or lubrication bore in the outer ring. Grease or lubricating oil is therefore supplied directly via the housing chamber at the bearing location.
What are the tolerance classes for the NU220 ECP?
This roller bearing combines dimensional accuracy in accordance with Class P0 or ABEC 1 with increased running accuracy in accordance with Class P6 or ABEC 3. This provides you with standardised mounting dimensions for the shaft and housing seats, whilst also ensuring greater concentricity during operation.
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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