NU318  ECP Cylindrical Roller Bearings by SKF
NU318  ECP Cylindrical Roller Bearings by SKF

SKF

Cylindrical Roller Bearings SKF NU318 ECP

Technical data
 
Inner diameter
90 mm
Outer diameter
190 mm
Width
43 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
5,25 kg
Scale quantity Your discount Unit price
2 12,75 € 242,19 €
5 25,50 € 229,44 €
254,94 €
exkl. MwSt, zzgl. Versandkosten

18 ready to ship

Cylindrical Roller Bearings SKF NU318 ECP
In Stock

Cylindrical Roller Bearings SKF NU318 ECP

The SKF NU318 ECP cylindrical roller bearing offers high radial load-carrying capacity with dimensions of 90 × 190 × 43 mm as a separable loose bearing.

The NU318 ECP cylindrical roller bearing is a single-row rolling bearing in the SKF Explorer performance class with an optimised internal design. The open bearing design is suitable for applications that primarily need to transmit high radial forces. With a bore of 90 mm, an outer diameter of 190 mm and a width of 43 mm, this component serves as a robust bearing unit. The polyamide cage guides the cylindrical rollers and contributes to smooth running.

What is the NU318 ECP cylindrical roller bearing suitable for in operation?

This cylindrical roller bearing is suitable for applications where high radial loads must be supported at medium to high speeds. Due to the NU design, the inner ring has no flanges and can be removed from both sides. This allows the bearing to accommodate axial length changes of the shaft relative to the housing without constraint within the bearing. The component thus functions purely as a non-locating bearing in the mechanical drivetrain.

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

The suffix ECP denotes the optimised internal design in combination with a polyamide cage. This cage is characterised by its low weight and good damping properties. In terms of dimensional accuracy, the bearing complies with tolerance class P0 or ABEC 1, whilst its running accuracy meets tolerance class P6 or ABEC 3. The permissible temperature range is from -30 to +120 degrees Celsius. As this is an open bearing, suitable external sealing and lubrication must be provided.

What are the dimensions of the NU318 ECP cylindrical roller bearing?

The bearing has an inside diameter of 90 mm, an outside diameter of 190 mm and a width of 43 mm. These dimensions correspond to the standardised main dimensions of the NU318 series. The outer ring is designed without a lubrication groove, which is why the lubricant must be applied from the side into the rolling element chamber.

What does the NU design designation mean for this bearing?

In the NU design, the outer ring has two fixed flanges to guide the rollers, whilst the inner ring is manufactured without flanges. This allows the inner ring to be removed from either side. This feature facilitates the separate installation of both bearing rings and compensates for thermally induced linear expansion of the shaft without causing any stress.

What does the suffix ECP stand for?

At SKF, the abbreviation ECP stands for an optimised internal design combined with a polyamide cage. This material reduces friction and noise. Furthermore, this design is rated for a temperature range of -30 to +120 degrees Celsius and elastically absorbs dynamic loads during operation.

What tolerance classes does the NU318 ECP cylindrical roller bearing have?

This roller bearing combines two levels of precision: the dimensional accuracy complies with tolerance class P0 or ABEC 1, whilst the running accuracy is manufactured to class P6 or ABEC 3. This combination ensures low-vibration concentricity with standard mounting dimensions on the shaft and in the housing.

What is the clearance of the NU318 ECP cylindrical roller bearing?

The bearing is manufactured with standard radial clearance. This means that, when not installed, the radial clearance is designed for standard fits on the shaft and housing. At normal operating temperatures and with standard fit selections, the required operating clearance for low-friction roller operation remains after press-fitting.

How is the open cylindrical roller bearing lubricated?

As the bearing is supplied in an open design, the lubricant used depends on the requirements of the specific design. Depending on the speed and load, either grease or oil is used. An external housing seal is required to prevent the ingress of dirt particles.

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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