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NA49/28R - NTN

NA49/28R

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

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Technical datasheet

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Specs

PRODUCT DEFINITION

d - Internal diameter 28 mm
D - External diameter 45 mm
C - Width of bearing, drawn cup or outer ring 17 mm
F - Under roller diameter 32 mm
rs - Min fillet radius 0,3 mm
s - Max axial offset 0,8 mm
Lubrication hole on outer ring Yes
k - Hole diameter 2,5 mm
Lubrication hole on inner ring No
Radial clearance class CN
Precision class P0
Mass 0,098 kg
Brand NTN
Product classification image

PRODUCT PERFORMANCE

Cr - Dynamic load rating 24,8 kN
C0r - Static load rating 33,5 kN
Nlim - Grease lubrication limit speed 8500 tr/min
Nlim - Oil lubrication limit speed 13000 tr/min
Tmin - Min operating temperature -20 °C
Tmax - Max operating temperature 120 °C

ABUTMENT

da min - Min shoulder diameter IR 30 mm
Da max - Max shoulder diameter OR 43 mm
ras max - Max shaft & housing fillet radius 0,3 mm