Spring Operated Brakes

Modular brake clutch system are protected to transfer the power of the movement speed in a very short term without loosing any power or to control the left out movement.

YBF (spring operated brake) series has a compact design. Spring operated brakes with two friction surfaces. By means of several pressure springs the brake friction is generated when no current is applied.

The brakes are electromagnetically released while braking. The rotor which is axially movable on the hub is pressed against the counter friction face by means of the springs via the armature plate.

In case of braking an air gap Slü occurs between the armature plate and the stator. To release the brake the coil of the stator is exited by means of DC current. The resulting magnetic flux causes the armature plate to be pulled towards the stator. Thus, motor is released. The brake torque can be reduced via the adjuster nut.

YBF brake systems has an special electronical circuit which can switch 4 times per second sensitively. This number varies depending on the size of brakes. There are no magnetic fields on body now so, there are no danger for braking delays.

Assembly:

1. Appropriate brake cover attach to the engine.
2. Fit the gear on the engine shaft with key and ring.
3. Gear is fixed with the appropriate wedge.
4. Applications without cooling, pistons rings or gear is blocked out.
5. Lining navel attach to the gear.
6. Brake body is fixed to the engine brake cover with fixing screw.
   

   YBF Code	YBF 01	YBF 02	YBF 03	YBF 04	YBF 05	YBF 06	YBF 07	YBF 08	YBF 09	YBF 09A	YBF 10	YBF 11
   Recommended Air Gap (Slü max.)	0.2	0.25	0.25	0.3	0.3	0.3	0.4	0.4	0.4	0.4	0.5	0.5

7. To adjust the air gap between stator body and armature, turn the adjustment tube to the counter clock side during the fixing operation.
8. Check the air gap (Slü) again.
9. Montage operation, engine cooling fan have to fit the extention shaft to fix engine shaft with fixing screw.

Calculation Method:

Example Calculation:

YBF - Spring Operated Brake's Selection Table:

Adjustment Torque Distance:

	YBF Code	0 mm	1 mm	2 mm	3 mm	4 mm
		Rated torques (Nm) related to the relative speed 100 rpm
	YBF-01	8	7	6	5	4
	YBF-02	16	14	12	9	7
	YBF-03	37	35	32	27	24
	YBF-04	50	48	46	42	40
	YBF-05	80	70	60	50	45
	YBF-06	160	155	145	130	115
	YBF-07	250	240	200	175	150
	YBF-08	420	400	360	320	300
	YBF-09	600	580	500	470	425
	YBF-09A	800	-	-	-	-
	YBF-10	1600	-	-	-	-

YBF are in the same body can get various torque values. For the various torque values take out some springs or adjust with torque adjustment screws.

Recommended Air Gap Values:

At the standard and high torque settings work space size can be vary. This dimensions as shown table. For the air gap (Slü) adjustment consider these values as given table.

Brake Wights:

Electrical Circuits Diagrams:

YBF there are two ways when applicate the DC voltage on to the brake stator. To switch bridge rectifiers, AC (~) or DC ( + - ) electrical connection. To decrease braking time DC must be switched.