Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	SKF
	Product Type	Roller Bearing
	Inside Diameter	20 mm
	Race Width	20mm
	Bore Type	Parallel
	Roller Material	Carbon Chrome Steel
	Cage Material	Reinforced Polyamide 66
	Limiting Speed	22000rpm
	Maximum Speed - Oil	19000rpm
	Maximum Speed - Grease	13000rpm
	Standards/Approvals	ISO - F6 (Fw), Radial internal clearance, table
	End Type	Open
	Series	NK 20/20
	Outside Diameter	28 mm
	Static Load Rating	25.5kN
	Bearing Material	Steel
	Dynamic Load Rating	16.5kN
	Number of Rows	1
	Race Type	Grooved
	Bearing Type	Needle

	Select all
	Brand SKF
	Product Type Roller Bearing
	Inside Diameter 20 mm
	Race Width 20mm
	Bore Type Parallel
	Roller Material Carbon Chrome Steel
	Cage Material Reinforced Polyamide 66
	Limiting Speed 22000rpm
	Maximum Speed - Oil 19000rpm
	Maximum Speed - Grease 13000rpm
	Standards/Approvals ISO - F6 (Fw), Radial internal clearance, table
	End Type Open
	Series NK 20/20
	Outside Diameter 28 mm
	Static Load Rating 25.5kN
	Bearing Material Steel
	Dynamic Load Rating 16.5kN
	Number of Rows 1
	Race Type Grooved
	Bearing Type Needle

COO (Country of Origin):: SK

SKF Needle Roller Bearing, 20mm Inside Diameter, 28mm Outside Diameter - NK 20/20

This needle roller bearing is designed for enhanced performance in various mechanical applications. Featuring a 20mm inside diameter and a 28mm outside diameter, it is a high-load needle roller bearing constructed from durable steel. This product is notable for its compact dimensions and lightweight design, making it an ideal choice for space-constrained setups in automation and machinery.

Features & Benefits

• Dynamic load rating of 16.5 kN allows for reliable operation

• Reference speed of 19,000 r/min ensures efficient performance

• Limiting speed of 22,000 r/min optimises machinery function

• Designed without an inner ring for maximum efficiency

• Made from steel for durability in demanding conditions

Applications

• Used for high-performance in automation systems

• Ideal for rotary requiring minimal radial space

• Suitable for mechanical systems with constrained design options

• Effective in electric motors and various industrial machinery

What are the benefits of using this design without an inner ring?

The absence of an inner ring allows for a more compact assembly, freeing up space for other components, which is particularly beneficial in systems where space is limited. This design also contributes to reduced weight and enhances the overall efficiency of the assembly.

How does the static load rating influence selection?

A static load rating of 25.5 kN indicates the capacity of the bearing to withstand external forces when stationary, which is crucial for applications where the bearing may be subjected to heavy loads during rest periods.

What factors should be considered when determining the operational limits?

Considerations should include the dynamic and static load ratings, reference and limiting speeds, and the thermal environment in which the bearing will operate. Additionally, compatibility with lubricants and shaft tolerances is essential for optimal performance.

SKF NK 20/20 20 mm I.D Roller Bearing Needle, 28 mm O.D

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