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

Single row tapered roller bearings

4T-639/632 - NTN

4T-639/632

Tapered roller bearing, pressed steel cage

The single row tapered roller bearing is available in metric dimensions (ISO 355 and JIS B 1512 standards) and in inches (ABMA standard, metric series including J). The single row in tapered roller bearing range, is the most widely used and is generally mounted in opposition.

This kit contains the following reference(s)

Documentation

Product information

PRODUCT DEFINITION
BrandNTN
d - Internal diameter63,5 mm
D - External diameter136,525 mm
B - Bearing/Inner ring width41,275 mm
C - Outer ring width31,75 mm
T - Total width41,275 mm
d1 - External diameter inner ring99,3 mm
a - Charge load application point29,875 mm
Mass2,85 kg
undefined
PRODUCT PERFORMANCE
C - Dynamic load215 kN
C0 - Static load262 kN
Cu - Fatigue limit load31,9 kN
A2 - Rating life coefficient1
e - Coefficient0.36
Y0 - Static axial load coefficient0.91
Y2 - Upper axial load coefficient1.66
N lim - Oil lubrication limit speed3800 tr/min
N lim - Grease lubrication limit speed2800 tr/min
Tmin - Min operating temperature-40 °C
Tmax - Max operating temperature120 °C
ABUTMENT
da max - Max shoulder diameter IR74 mm
db min - Min IR shoulder diameter81 mm
Da max - Max shoulder diameter OR118 mm
Db min - Min OR shoulder diameter125 mm
ra max - Max fillet radius3,5 mm
r1a - Max fillet radius3,3 mm
undefined