Table of Contents
Advertisement
6.4 Maximizing Bearing Lifespan
The Importance of Bearing Lifespan
Bearings are a key element to sustained pump operation. Throughout the lifespan of any pump, the be-
arings experience the majority of operation based wear and tear and are often the first point of failure.
Without regular bearing maintenance, mechanical failure becomes inevitable. This leads to complications
and consequences to further pump operation as well as significant losses in production from maintenance
downtime. Bearing lifespan is an important tool in maximizing lifespan across the system as well as avoi-
ding costly repairs.
Bearing Types Across
Pump
Ball Bearing
( SKF )
VT-70
7305 BECBY
VT-104
7207 BECBY
VT-130
7209 BECBY
ViscoTwin
Table 1:
Pump Bearing Configuration
The
line of
Processtec
configurations, each with their own specifications. All bearings used in
SKF high-performance bearings with the exception of the needle bearing used in the Model VT-70, produ-
ced by KOYO.
Measured Impact of Each Variable
Introduction
The following analysis was performed on a standard 7207 BECBY bearing in a test by SKF high-perfor-
mance bearings. The constants for the models are as follows:
Pump: VT-104
Direction: Front in / Top Out
Exit Pressure: 25 bar
Supply Pressure: 2 bar
Radial Load: 3 kN
Total Axial Load: 14 kN
Page 108
ViscoTwin
Pump Line
Needle Bearing
( FAG / KOYO )
NKJ 40/30
NA 6910
NA 6912
ViscoTwin
G8 pumps are equipped with two different types of bearings in varying
r/min: 1500
Number of bearings in Tandem: 2 sets of 2 bearings in tandem
Axial Load per Bearing: 7 kN
Operating Temperature: 80° C
Nc specifications: Slight-typical contamination
Lubrication Viscosity: 100 mm²/s @ 40° C and 40 mm²/s @ 100° C
Applicable Area of the
Top of the Spindle
0.0037 m
2
0.0060 m
2
0.0113 m
2
ViscoTwin
6. GEEK'S CORNER
Applicable Area of the
Front of the Spindle
0.0050 m
2
0.0079 m
2
0.0133 m
2
pumps are produced by
PROCESSTEC INC. 2022
Advertisement
Table of Contents
