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NA4840 Needle roller bearings with machined rings, with an inner ring

Short Description:

The Needle Roller Bearings are bearings with machined rings made of bearing steel that have a low sectional height and a high load carrying capacity. The outer ring has stable, high rigidity and can be used even for light alloy housings. The Machined Needle Roller is made from Chrome Steel and can be used with or without an inner ring. This type with an inner ring uses a shaft as the raceway surface, making its design more compact.


Product Detail

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NA4840 Needle roller bearings with machined rings, with an inner ring detail Specifications:

Material : 52100 Chrome Steel

Type : single row

Limiting Speed : 2000 rpm

Weight : 5.80 kg

 

Main Dimensions:

Bore Diameter (d) : 200 mm

Raceway diameter inner ring (F) : 220 mm

Outer diameter (D) : 250 mm

Width (B) : 50 mm

Chamfer dimension outer ring (r) min. : 1.5 mm

Permissible axial displacement from the normal position of one bearing ring relative to the other (S) : 1.5 mm

Dynamic load ratings (Cr) : 260 KN

Static load ratings (Cor) : 720 KN

 

ABUTMENT DIMENSIONS

Smallest permissible abutment diameter shaft, bearings with flanges (da) min. : 208 mm

Abutment diameter housing (with flanges) (Da) max. : 242 mm

Fillet radius (ra) max. : 1.5 mm

NA BEARING DRAWING

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