>150 A
5,600 g
Clockwise rotation
Steel pulley
Multifunctional regulator
The B5 alternator is typical for Cup racecars. Ro-bustness
increase for motorsport use. Free-runningpulley for reduction of
wear.The multifunctional regulator with special developedASIC by
Bosch controls the output voltage at B+ con-nection.Three-arm
design allows the use of a clamping arm.
Application
Application >122 A at 6,000 rpm/80°CMax. ambient temperature
105°C, high current only with
supported cooling airMax. ambient temperature(short-term)
120°C, high current only withsupported cooling air
Rotating direction Clockwise
Technical Specifications
Mechanical Data
Body material Cast AluminumWeight w/o pulley 5.6 kgMax.
rotations 13,000 x 1/minMoment of inertia 26 kg*cm2
Outer diameter w/o screw 156 mmLength w/o pulley 172 mmBattery
B+ connection M8Tightening torque at B+ 15 Nm
Electrical Data
Regulating voltage 14.4 VTemperature compensation -10 mV/K
High temperature cut off de-rating
-250 mV/K
Excitation resistor (L) ExternalCut-in-speed 1,400 x 1/min
Characteristic
Rpm [1/min] IG [A] at 80°C2,000 754,000 1146,000 1238,000
12510,000 12612,000 12713,000 127.5Please note: Measured with
U=13.1 V and t=20 min
Bosch Motorsport | Alternator B5
Alternator B5
Bosch Motorsport | Alternator B5 3 | 3
Represented by:
Europe:Bosch Engineering GmbHMotorsportRobert-Bosch-Allee 174232
AbstattGermanyTel.: +49 7062 911 9101Fax: +49 7062 911
[email protected]
North America:Bosch Engineering North AmericaMotorsport38000
Hills Tech DriveFarmington Hills, MI 48331-3417United States of
AmericaTel.: +1 248 876 2977Fax: +1 248 876
[email protected]
Asia-Pacific:Bosch Engineering Japan K.K.Motorsport18F Queen’s
Tower C, 2-3-5 MinatoMirai Nishi-ku, Yokohama-shiKanagawa
220-6218JapanTel.: +81 45 650 5610Fax: +81 45 650
5611www.bosch-motorsport.jp
Australia, New Zealand and SouthAfrica:Robert Bosch Pty.
LtdMotorsport1555 Centre RoadClayton, Victoria, 3168AustraliaTel.:
+61 (3) 9541 [email protected]
© Bosch Engineering GmbH 2020 | Data subject to change without
notice| , V, 22. Jun 2020
