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NA0-50X68X20 - NTN

NA0-50X68X20

Needle roller bearing, machined-rings, separable, with inner ring

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Technical datasheet

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Specs

PRODUCT DEFINITION

d - Internal diameter 45 mm
D - External diameter 68 mm
C - Width of bearing, drawn cup or outer ring 20 mm
F - Under roller diameter 55 mm
E - Upper roller diameter 60 mm
rs - Min fillet radius 0,6 mm
Lubrication hole on outer ring No
Lubrication hole on inner ring No
Radial clearance class CN
Precision class P0
Mass 0,23 kg
Brand NTN
Product classification image

PRODUCT PERFORMANCE

Cr - Dynamic load rating 28,8 kN
C0r - Static load rating 66,5 kN
Nlim - Grease lubrication limit speed 4800 tr/min
Nlim - Oil lubrication limit speed 7500 tr/min
Tmin - Min operating temperature -20 °C
Tmax - Max operating temperature 120 °C

ABUTMENT

da min - Min shoulder diameter IR 54 mm
db - Shoulder diameter IR 59,4 mm
Da max - Max shoulder diameter OR 64 mm
Db - OR smooth shaft shoulder diameter 55,8 mm
ras max - Max shaft & housing fillet radius 0,6 mm