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

High precision angular contact ball bearings

7000HVUJ84 - SNR

7000HVUJ84

In the ball bearing and high precision bearing ranges, the high precision angular contact ball bearing solves the maximum reliability constraints with increased performance in terms of rigidity, speed, capacity and precision. This bearing is recommended for demanding applications in terms of precision such as machine tool spindles. NTN is getting sub-ranges dedicated to requirements of speed, sealing, specific greasing, etc.

Documentation

Product information

PRODUCT DEFINITION
BrandSNR
d - Internal diameter10 mm
D - External diameter26 mm
B - Bearing/Inner ring width8 mm
d1 - External diameter inner ring14,65 mm
D1 - Inner diameter outer ring21,4 mm
D2 - Inner diameter outer ring23,22 mm
a - Charge load application point8 mm
α - Contact angle25 °
rs - Min fillet radius0,3 mm
r1s - Min fillet radius0,3 mm
Precision classP4
Mass0,018 kg
undefined
PRODUCT PERFORMANCE
C - Dynamic load5,3 kN
C0 - Static load2,55 kN
Cu - Fatigue limit load0,16 kN
f0 - Coefficient12.292
Axial displacement K Factor1.15
Preload level8
Axial rigidity44 N/µm
Radial rigidity94 N/µm
Tmin - Min operating temperature-30 °C
Tmax - Max operating temperature120 °C
N lim - Oil lubrication limit speed89000 tr/min
N lim - Grease lubrication limit speed58000 tr/min
BEARING FREQUENCIES
BPFO - Over rolling frequency on outer ring (60 rpm)3,801 Hz
BPFI - Over rolling frequency on inner (60 rpm)6,199 Hz
BSF - Over rolling frequency on rolling element (60 rpm)3,563 Hz
BRF - Rotational frequency – rolling element (60 rpm)1,782 Hz
FTF - Rotational frequency - cage (60 rpm)0,38 Hz
ABUTMENT
da min - Min shoulder diameter IR12,5 mm
db min - Min IR shoulder diameter12,5 mm
Da max - Max shoulder diameter OR23,5 mm
Db max - Max OR shoulder diameter23,5 mm
r1a - Max fillet radius0,3 mm
ra max - Max shaft & housing fillet radius0,3 mm
undefined

Industry Calcul Factors

Calcul factors image