Warner Electric FC-G-C410 User Manual

P-2065-WE
SM409gb - rev 01/09

Centrifugal Brakes

FC-G-C410

Service Manual

We, WARNER ELECTRIC EUROPE, 7, rue Champfleur, B.P. 20095, F-49182 St Barthélemy d’Anjou Cedex
declare that the torque limiters made in our factory from St Barthélemy d’Anjou,

and hereafter designated : FC-G-C410

are exclusively designed for incorporation into a machine and to be assembled with other equipments to create a machine. The operation of
the product is submitted to the conformity of the complete equipment, following the provisions of the machinery directive 98/37/EC Drawn up

in St Barthélemy d’Anjou, July 2002
E. PRAT, General Managing Director

1 Technical specifications

8

10

3

2

9

7

1

6

4

5

“A”

L

1 Hub
2 Inertia Block
3 Spring
4 Axle

5 Spacer

2 Warner Electric Europe • [phone] P-2065-WE • 2/13

6 Flange
7 Fixing Screws
8 Closing Washer
9 Safety Ring

10 Drum

Fig. 1

The FC-G - C140 centrifugal brake is a device

operating with delayed actuation that is to say, the

pressure between the friction surfaces is achieved by
the centrifugal force resul ting from the rotation of the

driving input. The engagement or disengagement is
therefore driven only by action upon the input side.

The device has no wear adjustment ; it operates only

in dry conditions ; the friction is of cast-iron-against­packing type.

Example of description for a centrifugal device used

as brake with a zero torque at n = 1650 revolutions
per minute and a nominal torque of 20 m, daN for N
= 2700 revolu tions per minute.

Centrifugal brake, type FC 20 G - 1650/2700

4 ASSEMBLY

On our devices, hub  and drum  bores have

usually a H7 tolerance.

It can be mounted horizontally, vertically or in any

other position.

2 DESCRIPTION

The device consists of two main parts:

2.1 - The driving part includes:

- a hub  fixed on the driving-shaft by means of a
key ;

- one, two or three sets of inertia-blocks 
depending on the type) which are made integral
with the hub  by means of the teeth ;.

- springs , which draw the inertia-blocks  back

into the “disengaged or de-braked” position, are
articulated on the axles , are laterally kept

in position by the spacers  and the flanges
 and are fixed on the inertia-blocks  by means
of the screws .

- a closing-washer , centered on the hub 
and laterally kept in position by the safety-ring .

For fitting the device on the shaft, we advise to use

the js6 tolerance.

The width of the hub  is key groove has the P9

tole rance.

The g6 tolerance is quite proper for the

centering designed to receive the drum .

The shaft should not fall out of alignment with the

drum by a greater value than the one showed in
picture 3, while it should not be more eccentric than
in picture 2.

0,2 max.

2. 2 - The fixed part includes

- a drum  centered on the driven member (clutch
use) or the frame o the machine (brake use) and
fixed by means of screws.

3 OPERATION

The device is rated to a zero torque for rotation

speeds of the driving-shaft below “n” revolutions per
minute, the iner tia-blocks  being kept back by the
release springs .

For speeds greater than “n”, the inertia-blocks  are

pushed into contact with the drum  as a result of
the centrifugal force and the torque gradually grows
until it reaches its nominal value for “N” revolutions
per minute.

When the speed decreases, the torque gradually

decreases until it reaches its zero value for speeds
equal to or under “n” revolutions per minute.

NOTE - “n” and “N” values are engraved on every

device after the name of the type

Fig. 2

0,1 max.

100

Fig. 3

Warner Electric Europe • [phone] P-2065-WE • 2/13 3