3. Descripon
This manual pro
vides step by step instrucons for the removal and inseron of the
mechanical bearing on the nEXT730D/930D/1230H pump.
3.1 Supplied equipment
Bearing exchange video training is available on the Edwards Vacuum Channel on
YouTube.
nEXT730/930D Bearing kit part no. B8J200827
nEXT1230H Bearing kit part no. B8M200827
▪ Grooved ball bearing 8x23x15
▪ O-Ring 35x3 FKM
▪ Grease syringe with 0.4 ml LVO 821 grease
nEXT730/930D Bearing exchange tool kit part no. B8J200845
nEXT1230H Bearing exchange tool kit part no. B8M200845
Figure 1 Special Tools
No. Special tools
1 Bearing preload measurement and seng tool
2 Bearing pr
ess bolt
3 Bearing extractor
4 Rotor xaon tool incl. rubber pad, Ø approx. 45 mm, approx. 2 mm thick,
with a hole in the center Ø approx. 13 mm
5 Gauge holder for measuring the axial play
6 Reset tool
06/2021 - ©Edwards Limited
Page 8300872820_002_C2
B8J203880_C
300872820_002_C2 - Descripon