| Composite Brake Blocks |
| NON ASBESTOS BASED RAILWAY COMPOSITE BRAKE BLOCKS: |
|
Non Asbestos Composition Railway Brake Block is a rigid molded Product having short filaments of Synthetic Man made Mineral Fiber and organic Fibers with highly thermally stable Phenolic Powder Resin as a binder and fused in a matrix which contributes to the strength and performance in the terms of Friction / wear properties suitable for use in Diesel / Diesel-Electric / Hydrostatic Shunting / Main Line Locomotives, Freight & Rolling Stock . This product meets the requirement of U.I.C. Specification Dynamometer and in compliance with the European Conformance  mark. |
(European conformance CE mark) |
| APPLICATION : |
|
| It is used in Air Brake Systems ( Radial Block / Tread Breaking ) for Rail Application |
| TECHNICAL DATA : |
|
| Average mean Co-efficient of friction for Design Purpose :
As per customer standards & specification |
| RECOMMENDED MATING SURFACE |
|
| Good Quality Forged Wheel / Cast Wheels / Tyred Wheel |
| BRINELL HARDNESS OF THE MATING SURFACE |
|
| 200 Minimum : As per customer standards & certification |
| MACHINING DATA OF MATING SURFACE |
|
| Carbide Tipped Tools are generally recommended for use on this material for Drilling, turning and boring. |
| RECOMMENDED OPERATING RANGE |
|
| Max Temperature centigrade |
: |
400oC |
| Max Continuous Operating Temp |
: |
300oC |
| Max Brake Shoe Force |
: |
4.0 Tons |
|
| Diagram showing correct fitment of CBB with
Brake Head |
 |
Note : It may be noted that the key should always be in contact with the 3 points (A, B & C)
shown in the figure to ensure proper fitment. |
|
| Technical Features of Composite Brake Blocks |
|
| SI NO |
Application |
Type |
| 1 |
EMU |
AF ‘K’ type |
| 2 |
Freight |
‘L’ type |
| 3 |
Coaching |
‘L’ type |
| 4 |
Coaching |
AF ‘K’ type |
5 |
Locomotive |
‘L’ type |
| 6 |
Coaching |
‘K’ type |
| 7 |
Freight |
‘K’ type |
| 8 |
Coaching (MG) |
‘L’ type |
| 9 |
Freight (BLC) |
‘L’ type |
| 10 |
Locomotive |
‘K’ type |
| 11 |
EMU |
‘K’ type |
| 13 |
DMRC |
‘K’ type |
| 13 |
HYUNDAI ROTEM |
'K' type |
| 14 |
BOMBARDIER |
'K' type |
|
|
| Avoid the following |
| • |
Mix up of ‘K’ blocks and ‘L’ block. |
| • |
Hammering the CBB on clamp or backplate. |
| • |
Using improper brake heads ie., if the lugs of CBB do not seat in the grooves-discard. |
| • |
Dropping blocks roughly while handling. |
| • |
Removing blocks with minor cracks from service. |
| • |
Storing the blocks on radius side. |
| • |
Taper wearing of blocks along the arc. |
| • |
Lug portion coming down from the head. |
| |
|
|
| Get optimum life from your CBB |
| • |
Mix up of ‘K’ blocks and ‘L’ block. |
| • |
Hammering the CBB on clamp or backplate. |
| • |
Using improper brake heads ie., if the lugs of CBB do not seat in the grooves-discard. |
| • |
Dropping blocks roughly while handling. |
| • |
Removing blocks with minor cracks from service. |
| • |
Storing the blocks on radius side. |
| • |
Taper wearing of blocks along the arc. |
| • |
Lug portion coming down from the head. |
| |
|
|
