Alternator GCM1

This alternator is modified for motorsport demand and splash protected. The stator windings are handmade and optimized for higher current output; the rotor is extra fine balanced and double impregnated. Clockwise and anticlockwise versions are possible, modifications are available on request.

Features

  • 140 A
  • 3,400 g
  • Clockwise or anticlockwise rotation
  • Special lightweight aluminum pulley available

Application

Ambient temperature range

-30 to 90°C

Vibration protection

high

Installation without rubber mounting.

Technical Specifications

Mechanical Data

Case material

aluminum

Weight

3,400 g

Current regulator unit

integrated

Max. rotations

18,000 x 1/min

Diameter

108 mm

Length without shaft stub

128 mm

Distance between mounting points

154 mm

Electrical Data

Rated current

140 A

Output voltage

13.5 V

Cut-in speed

3,000 x 1/min

Coupling

screws

Battery B+

M6

Tightening torque at B+

14 Nm

Control lamp D+

flat-pin connector, see drawing

Characteristic

Rpm [1/min]

IG [A] at 90°C

2,000

0

2,500

6

3,000

32

3,500

51

4,000

63

5,000

80

6,000

90

7,000

98

8,000

105

9,000

111

10,000

116

12,000

121

15,000

127

18,000

131

Installation Notes

Typical lifetime: max. 50 h according to Bosch Motorsport standard validation program

For application with severe conditions and/or high volume, please, contact your Bosch Motorsport counterpart in order to define the most appropriate validation program.

An external cooling can contribute to increase the performance. It will only be effective if the incoming air is 30°Kelvin cooler than the ambient air. Otherwise, the restriction of airflow will negate any cooling benefits. If these conditions are met, the cooling air should be distributed over the center axis at the rear of the alternator for optimal cooling. The alternator fans are not able to generate negative pressure. It is possible to use external blower to support the alternator. Debris at alternator cooling area can reduce cooling effect. This could also shorten the alternator service life. Installation without rubber mounting.

Ordering Information

 

Alternator GCM1

Application, Rotation Direction and

Order number: on request

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