NUP2218  ECP Cylindrical Roller Bearings by SKF
NUP2218  ECP Cylindrical Roller Bearings by SKF

SKF

Cylindrical Roller Bearings SKF NUP2218 ECP

Technical data
 
Inner diameter
90 mm
Outer diameter
160 mm
Width
40 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
Fixed bearing
Temperature range
-30 to +120 °C
Version
Explorer
Weight
3,284 kg
Scale quantity Your discount Unit price
2 14,08 € 267,57 €
5 28,17 € 253,48 €
281,65 €
exkl. MwSt, zzgl. Versandkosten

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Cylindrical Roller Bearings SKF NUP2218 ECP
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Cylindrical Roller Bearings SKF NUP2218 ECP

The SKF NUP2218 ECP single-row cylindrical roller bearing, measuring 90x160x40 mm, serves as a fixed bearing designed to accommodate high radial loads and provide axial guidance on both sides.

The NUP2218 ECP cylindrical roller bearing is an open rolling bearing in the SKF Explorer design with an optimised internal construction. This design features a 90 mm cylindrical bore, an outer diameter of 160 mm and a width of 40 mm. Typical applications are found in mechanical engineering for shaft mountings subject to high radial loads. Thanks to its cylindrical rollers, the bearing transmits high radial forces whilst maintaining stable guidance.

What is the NUP2218 ECP cylindrical roller bearing suitable for as a fixed bearing?

Design engineers primarily use this design where shafts need to be axially guided under high radial forces. As a fixed bearing, the NUP design absorbs axial forces from both directions, as it features two fixed flanges on the outer ring and one fixed flange together with a loose flange disc on the inner ring. In appropriate bearing arrangements, this roller bearing locks the shaft in the axial direction whilst simultaneously withstanding high radial loads.

What features does the polyamide cage of the ECP variant offer?

The suffix ECP denotes the combination of optimised internal geometry and a lightweight polyamide cage. This cage guides the rollers quietly and is suitable for dynamic loads. The bearing is designed for a temperature range of -30 to +120 degrees Celsius. As this is an open bearing without an integrated seal, the lubrication supply and any external seals must be adapted to the specific housing environment.

What makes the NUP2218 ECP cylindrical roller bearing stand out?

This single-row cylindrical roller bearing combines optimised roller geometry with the NUP fixed-end design. It features fixed flanges on the outer ring and a fixed flange and a loose flange disc on the inner ring. As a result, the bearing can accommodate high radial loads whilst simultaneously guiding shafts in both axial directions.

What are the main dimensions of the NUP2218 ECP bearing?

The bearing has an inside diameter of 90 mm, an outside diameter of 160 mm and a width across flats of 40 mm. These dimensions define the installation space for mounting on the shaft and in the housing. The outer ring is designed without a lubrication groove or lubrication bore.

What does the ‘fixed bearing’ design mean in the context of this cylindrical roller bearing?

As a fixed bearing, the component limits the axial displacement of the shaft relative to the housing in both directions. The flanges on the inner and outer rings transmit the axial forces directly via the end faces of the cylindrical rollers. The design thus counteracts any axial displacement of the shaft during operation.

What are the tolerance classes for the SKF bearing?

The model is manufactured to a dimensional accuracy of tolerance class P0 or Standard (ABEC 1). In terms of running accuracy, the bearing meets the tighter tolerance class P6 (ABEC 3). This classification ensures precise concentricity in standard mechanical engineering applications.

What is the operating temperature range for this bearing?

The operating temperature range is specified as -30 to +120 degrees Celsius. The built-in polyamide cage sets the upper limit of this range. When designing the system, care should be taken to ensure that the selected lubricant is suitable for the relevant operating temperature.

How is the open cylindrical roller bearing lubricated?

As the bearing is supplied without its own sealing washers, lubrication is provided via the surrounding housing system using grease or lubricating oil. External housing seals protect the raceways from dirt and moisture and keep the lubricant within the system.

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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