Built-in Spindle Motor achieving
high performance machine tool spindle<BUILT-IN SPINDLE MOTOR
B+-B series

Built-in Spindle Motor achieving high performance machine tool spindle< BUILT-IN SPINDLE MOTOR B+-B !
FANUC BUILT-IN SPINDLE MOTOR B+I-B !
Features¡B+I-B series oﬀers high power up to high speed range and is suitable for every kind of machine
tool spindle.
¡Large torque at low speed and high power at high speed achieved by speed range control¡Suitable model available for every kind of machine tool spindle from a wide range of line-up¡High response, high precision, high eﬃciency and lower motor
loss achieved by Spindle HRV Control¡Larger torque and higher power due to eﬃcient heat radiationof stator resin mold (Option)¡Stator with or without cooling jacket selectable for statorresin mold¡Even larger torque and higher power with copper-bar rotor(Some models)¡Water cooling available in addition to conventional oil cooling¡S6 short-time rated output equal to S3 available due toFANUC original spindle control

FANUC BUILT-IN SPINDLE MOTOR B+S-B !
Features¡B+S-B series has two types of motor: IPM type (interior magnet) is suitable for turning withlarge torque at low speed and SPM type (surface magnet) is suitable for milling with highspeed rotation.
¡Compact size and large torque achieved with strong
neodymium magnets¡Low torque ripple achieved by optimizing
magnetic circuit design¡High speed and high power achieved by using Sub Module SM¡Larger torque and higher power due to eﬃcient heat radiationof stator resin mold
¡Stator with or without cooling jacket selectable for statorresin mold¡Water cooling available in addition to conventional oil cooling2System conﬁguration< SERVO AMPLIFIER@+-B series/#+-B series
Sub Module SM(only B+S-B series)<BUILT-IN SPINDLE MOTOR
B+I-B series/B+S-B series@+BZ SENSOR / @+CZ SENSOR

Stator resin mold (B+I-B series : Option, B+S-B series : Standard)¡Larger torque, higher power or lower temperature rise due to eﬃcient heat radiation of
stator resin mold (Necessary to increase chiller capacity)[Example]
WithoutResin Mold

With Resin Mold

Without Resin Mold

34%

34%With Resin Mold

Continuous rated output

Temperature rise at the same output

Output speciﬁcation with water cooling¡Larger torque, higher power or lower temperature rise due to higher the heat removal withwater cooling (Necessary to increase chiller capacity)[Example]

Water cooling
Oil cooling

Oil cooling

25%

20%

Water coolingContinuous rated output

Temperature rise at the same output
3

Service & Support
Excellent Maintenance Services

FANUC service team delivers customer trust and conﬁdence
based on direction of service Maximizing Uptime",
Global Service" and Lifetime maintenance".

Conforming to the spirit of Service First , FANUC provides lifetime maintenance to its products
for as long as they are used by customers, through more than 260 service locations supporting
more than 100 countries and regions throughout the world.

Maximizing Uptime

GlobalServiceLifetime
Maintenance

FANUC ACADEMYFANUC ACADEMY operates versatile training courses to develop skilled engineers eﬀectively in several days.

●● Overseas Aﬃliated Companies

FANUC America Corporation
FANUC Europe Corporation, S.A.
BEIJING-FANUC Mechatronics CO., LTD
KOREA FANUC CORPORATIONTAIWAN FANUC CORPORATIONFANUC INDIA PRIVATE LIMITED

Headquarters 3580, Shibokusa, Oshino-mura,
Minamitsuru-gun Yamanashi, 401-0597, JAPAN
Phone: (+81)555-84-5555 https://www.fanuc.co.jp/

Phone: (+1)248-377-7000
Phone: (+352)727777-1
Phone: (+86)10-6298-4726
Phone: (+82)55-278-1200
Phone: (+886)4-2359-0522
Phone: (+91)80-2852-0057• All speciﬁcations are subject to change without notice.
• No part of this catalog may be reproduced in any form.
• The products in this catalog are controlled based on Japan's Foreign Exchange and Foreign Trade Law". The
export from Japan may be subject to an export license by the government of Japan. Further, re-export toanother country may be subject to the license of the government of the country from where the product is
re-exported. Furthermore, the product may also be controlled by re-export regulations of the United States
government. Should you wish to export or re-export these products, please contact FANUC for advice.

https://www.fanucamerica.com/
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2005

Built-in SP Bi-B(E)-07c, 2023.5, Printed in Japan