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NA4840 - NTN

NA4840

Needle roller bearing, machined-rings, with inner ring, double-side ribs

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Technical datasheet

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Specs

PRODUCT DIMENSIONS

Internal diameter (d) 200 mm
External diameter (D) 250 mm
Width of bearing, drawn cup or outer ring (C) 50 mm
Under roller diameter F 220 mm
Min fillet radius (rs) 1,5 mm
Max axial offset s max 1,5 mm
Lubrication hole on outer ring Yes
Hole diameter (k) 3,5 mm
Lubrication hole on inner ring No
Radial clearance class CN
Precision class P0
Mass 5,84 kg
Brand NTN
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PRODUCT PERFORMANCE

Dynamic load rating (Cr) 231 kN
Static load rating (C0r) 705 kN
Nlim (grease) 1200 tr/min
Nlim (oil) 1800 tr/min
Min operating temperature (Tmin) -20 °C
Max operating temperature (Tmax) 120 °C

ABUTMENT

Min shoulder diameter IR (da min) 208 mm
Max shoulder diameter OR (Da max) 242 mm
Max shaft & housing fillet radius (ras max) 1,5 mm