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 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