Introducing the new SKF Explorer spherical roller bearing for high speed applications.
From design to driveline. Imagine how much more you could do.
Imagine getting 6-pole motor performance from a 4-pole motor
Traditionally, gearbox designers, integrators and
industries have responded to the demand for
increased performance with bigger machines.
For the irst time, the new SKF Explorer spherical
roller bearing for high speed applications is making
a new dimension of gearbox design possible. Up to
50% faster than comparable bearings on the
market, it enables a higher level of performance.
Faster gearboxes allow for the design of lighter
motors that deliver powerful performance with
lower energy consumption for end users.
With its robustness and cage strength, this new
SKF Explorer spherical roller bearing is designed for
longer service life and fewer equipment failures or
shutdowns – even in the most challenging
industries.
Now, designers have more lexibility to design
equipment that optimizes driveline performance
without vast R&D investment. They are also able to
deliver greater eficiency to customers. End users
could start seeing 6-pole motor performance from
a 4-pole motor.
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om
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Robust solution
with reliable
performance
50%FASTER THAN
ANYTHING
COMPARABLE
VA991 spherical roller bearing
• SKF Explorer performance class
• SKF CC bearing design
• Hardened cage
• Hardened guide ring
• Improved oil low
• Validated performance
Now you can get the same performance
from a motor with potentially lower
manufacturing and running costs. All
made around a bearing with robustness
and cage strength designed for longer
uptime and service life, fewer
equipment failures or shutdowns even
in the most challenging industries.
The SKF Explorer spherical roller
bearing for high speed applications is
the start of a new gearbox performance
level. Entire drivelines will beneit in
speed and eficiency with a bearing
capable of running up to 50% faster.
Features include:
• Robust, wear-resistant hardened
cage and guide ring - designed to
withstand high speeds, shock loads
and load variations.
• Validated performance at high
speeds - constructed of the highest
quality steel, the new SKF Explorer
spherical roller bearing for high speed
applications withstands greater
acceleration and deceleration than
standard bearings.
• Improved oil low - the larger W33
groove allows for better oil low
through the bearing.
Beneits across the whole driveline
• Design lexibility
• Superior strength
• More uptime
• Energy savings
For industries worldwide
• Mining, Mineral Processing & Cement
• Metal
• Pulp & Paper
Imagine...
- Getting 6-pole performance from a
4-pole motor.
- Not having to invest in bigger, heavier
or more costly equipment.
- More design lexibility and fewer
equipment failures.
It’s all possible with the new SKF
Explorer spherical roller bearing for high
speed applications.
A new spherical roller bearing. A new performance.
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More speed. Superior strength.
SKF’s long track record of reliability
continues with the SKF Explorer
spherical roller bearing for high speed
applications. The bearings have proved
their robustness, even at high speed,
which means that you can expect more
uptime.
The VA991 is designed and validated for
industrial gearboxes using SKF BEAST
advanced modelling. It has also
undergone functional and comparative
tests under gearbox operating
conditions.
This new solution has been designed to
overcome design limits reached in large
industrial gearboxes, such as grinding
mill or unwinder applications.
VA991 variant limiting speed and motor compatibility
Bearing size
Shaftdiameter
Bearing series223 232 240 241Limiting speed
– mm r/min
24 120 3 90026 130 3 60028 140 3 40030 150 3 10032 160 2 90034 170 2 70036 180 2 700 2 40038 190 2 500 2 30040 200 2 400 2 500 2 10044 220 2 100 2 200 2 600 1 90048 240 1 900 2 000 2 500 1 70052 260 1 800 1 800 2 200 1 50056 280 1 600 1 700 2 100 1 30060 300 1 600 1 900 1 20064 320 1 400 1 800 1 10068 340 1 60072 360 1 600
Standard spherical roller bearing limiting speed and motor compatibility
Bearing size
Shaftdiameter
Bearing sizes223 232 240 241Limiting speed
– mm r/min
24 120 2 60026 130 2 40028 140 2 20030 150 2 00032 160 1 90034 170 1 80036 180 1 700 1 60038 190 1 600 1 50040 200 1 500 1 700 1 40044 220 1 400 1 500 1 700 1 20048 240 1 300 1 300 1 600 1 10052 260 1 100 1 200 1 400 95056 280 1 100 1 100 1 400 90060 300 1 000 1 200 80064 320 950 1 200 70068 340 1 10072 360 1 000
Motor compatibility of different sizes of the VA991 variant range and electric motor speeds with different pole numbers and electric grid frequencies.
VA991 bearing
Improved oil low through
W33 groove
Hardened guide ring
Robust and wear-resistant
hardened cage €30 000 - 50 000 per hour Cost of downtime from failure of less robust bearing
E-motor speed
E-motor type
Electric grid
1 800 4-pole 60 Hz1 500 4-pole 50 Hz1 200 6-pole 60 Hz1 000 6-pole 50 Hz900 8-pole 60 Hz750 8-pole 60 Hz
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® SKF is a registered trademark of the SKF Group.
© SKF Group 2018The contents of this publication are the copyright of the publisher and may not be reproduced (even extracts) unless prior written permission is granted. Every care has been taken to ensure the accuracy of the information contained in this publication but no liability can be accepted for any loss or damage whether direct, indirect or consequential arising out of the use of the information contained herein.
PUB 51/P2 17441 EN · September 2018
Certain image(s) used under license from Shutterstock.com.
In almost every industry, SKF has experts to help you work on
solutions to increase your rotating equipment performance and
lower costs. Find out about SKF payback modelling to see how
easily you could upgrade to new gearbox and motor technology
with the new SKF Explorer spherical roller bearing for high
speed applications.
www.skf.com/IMAGINE