• English
  • Français
  • Deutsch
  • Italiano
  • Español
  • Português do Brasil
  • Polski
  • Русский
  • Türkçe

Needle roller bearing, machined-ring, with inner ring

NA4840 - NTN

NA4840

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

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter200 mm
D - External diameter250 mm
C - Width of bearing, drawn cup or outer ring50 mm
F - Under roller diameter220 mm
rs - Min fillet radius1,5 mm
s - Max axial offset1,5 mm
Lubrication hole on outer ringOui/Yes
k - Hole diameter3,5 mm
Lubrication hole on inner ringNon/No
Radial clearance classCN
Precision classP0
Mass5,84 kg
undefined
PRODUCT PERFORMANCE
Cr - Dynamic load rating231 kN
C0r - Static load rating705 kN
N lim - Grease lubrication limit speed1200 tr/min
N lim - Oil lubrication limit speed1800 tr/min
Tmin - Min operating temperature-20 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da min - Min shoulder diameter IR208 mm
Da max - Max shoulder diameter OR242 mm
ras max - Max shaft & housing fillet radius1,5 mm