NU208  ECP Cylindrical Roller Bearings by SKF
NU208  ECP Cylindrical Roller Bearings by SKF

SKF

Cylindrical Roller Bearings SKF NU208 ECP

Technical data
 
Inner diameter
40 mm
Outer diameter
80 mm
Width
18 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
0,367 kg
Scale quantity Your discount Unit price
25 2,76 € 52,38 €
35 5,51 € 49,63 €
55,14 €
inkl. MwSt, zzgl. Versandkosten

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Cylindrical Roller Bearings SKF NU208 ECP
In Stock

Cylindrical Roller Bearings SKF NU208 ECP

The SKF NU208 ECP cylindrical roller bearing, a single-row idler bearing (40x80x18 mm), offers high radial load-carrying capacity in a compact design.

The SKF NU208 ECP cylindrical roller bearing is an open, single-row roller bearing with a cylindrical bore for purely radial loads. In the SKF Explorer version, the design features an optimised internal geometry. With dimensions of a 40 mm bore, 80 mm outer diameter and 18 mm width, the bearing can withstand high forces. Thanks to its standard radial clearance, this variant is suitable for common fit conditions in mechanical and plant engineering.

What is the NU208 ECP cylindrical roller bearing suitable for in operation?

This single-row cylindrical roller bearing is primarily used in bearing arrangements where high radial forces act and axial displacement must be compensated for. As a loose bearing of the NU design, the inner ring can be removed from both sides. This allows the component to compensate for thermal length changes in the shaft during operation without any constraint. Typical applications are found in industrial bearing arrangements with high radial loads that require precise shaft guidance and separate ring mounting.

What are the advantages of the polyamide cage and the NU design?

The integrated polyamide cage guides the cylindrical rollers quietly and reduces the weight of the rolling element assembly. The permissible operating temperature range is from –30 to +120 degrees Celsius. As the inner ring has no flanges, it can be fitted onto the shaft separately, which simplifies assembly. Please note that the open bearing has no integrated seals and should therefore be lubricated via the housing and protected from dirt.

What are the dimensions of the NU208 ECP cylindrical roller bearing?

The bearing has an inner diameter of 40 mm, an outer diameter of 80 mm and a width of 18 mm. These measurements define the standardised dimensions of the bearing. The single-row component is designed as a non-locating bearing and is operated without integrated seals.

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 is manufactured without flanges. This allows the inner ring to be removed from both sides and fitted separately. During operation, this geometry enables axial shaft expansion to be compensated for without constraint directly within the bearing.

What are the key features of the polyamide cage in the ECP version?

The suffix ‘ECP’ stands for a polyamide cage and an optimised internal design. The polyamide cage dampens vibrations, reduces operating noise and is characterised by its low weight. The bearing is designed for a temperature range of -30 to +120 degrees Celsius.

What are the tolerance classes for the NU208 ECP cylindrical roller bearing?

The component combines dimensional accuracy in accordance with tolerance class P0/PN (equivalent to ABEC 1) with enhanced running accuracy in accordance with P6 (equivalent to ABEC 3). This combination ensures low-vibration operation and guarantees a precise fit in the housing and on the shaft.

How is the open cylindrical roller bearing lubricated?

As the open bearing is supplied from the factory without either seals or lubricant, lubrication is provided via the housing design. Depending on the operating conditions, either greases or oils are suitable. The outer ring has no groove or lubrication bore, which is why lubricant must be applied from the side.

What makes the SKF Explorer version stand out?

SKF’s Explorer version is based on an optimised internal design of the cylindrical roller bearing. The rollers and raceways feature an improved profile that reduces edge stresses and promotes even load distribution during rolling contact. This ensures smooth force transmission under high radial loads.

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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