KZ642 Knorr-Bremse Compatible Twin Cylinder Compressor
1400 040 002
Summary
High-capacity water-cooled twin cylinder compressor featuring a Ø75.00 mm bore, 50 mm stroke, and 440cm³ swept volume. Designed for heavy commercial vehicle air brake systems, this unit includes an ESS feature and water-cooled valve plate for sustained performance. Compatible with Knorr-Bremse systems. Equivalent to OE Knorr-Bremse KZ642.
| EAN Code | 8699031049069 |
|---|
Ready to Order
Compatible OEM Codes
-
SCANIA
- 394441
- 1348919
- 1300366
- 10571185
-
KNORR-BREMSE
- KZ642/2X50
- KZ642/2RM
- KZ642
- 1189106
Description
What does a twin cylinder compressor do?
This twin cylinder compressor serves as a critical engine-driven component within the air brake system of heavy commercial vehicles, utilizing two piston-cylinder assemblies to generate high-volume compressed air. By providing two compression strokes per crankshaft revolution, it ensures rapid reservoir filling and stable pressure for high-demand pneumatic systems.Technical specifications and cooling
This specific unit is engineered for heavy-duty service, featuring a water-cooled design to maintain optimal thermal stability during sustained operation. It includes an ESS feature and a water-cooled valve plate to enhance durability under high pressure. Technical specifications include a Ø75.00 mm cylinder bore, a 50 mm stroke, and a 440cm³ swept volume, ensuring efficient air delivery for heavy commercial applications.Installation and maintenance guidance
For proper installation and maintenance, technicians should verify the M12x1,5 air unloader port and the M18x1,5 water inlet/outlet ports to ensure leak-free connections. Regular inspection of the water cooling circuit is essential to prevent overheating in the valve plate assembly and to maintain consistent output levels.System compatibility
Consult your authorized distributor to confirm exact fitment for your specific vehicle configuration.OE cross-reference
1400 040 002 (Twin Cylinder Compressor) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number KZ642.Technical Specifications
| Cylinder Bore | Ø75.00 |
|---|---|
| Stroke | 50 mm |
| Swept Volume | 440cm³ |
| Number of Cylinders | 2 |
| Through Drive | OK |
| Air Unloader Port | M12x1,5 |
| Water (W) or Air (A) Cooled | W |
| Water Inlet Port | M18x1,5 |
| Water Outlet Port | M18x1,5 |
| With ESS Feature | OK |
| Water Cooled Valve Plate | OK |
| Weight | 22,5 KG |
Other OEMs
KNORR-BREMSE
- KZ642/2X50
- KZ642/2RM
- KZ642
- 1189106
SCANIA
- 394441
- 1348919
- 1300366
- 10571185
Related Products
Repair Kits
Compatible Vehicles
| Brand | Model | Model Type | Engine |
|---|---|---|---|
| KNORR-BREMSE | |||
| SCANIA |
FAQ
What is the primary function of this twin cylinder compressor?
It generates high volumes of compressed air through two piston assemblies to ensure rapid reservoir filling in heavy commercial vehicle braking systems.
How does the cooling system work on this unit?
This is a water-cooled model that integrates into the engine cooling circuit via M18x1,5 ports to prevent overheating during heavy use.
What are the key technical dimensions of this compressor?
The unit features a Ø75.00 mm cylinder bore, a 50 mm stroke, and provides a swept volume of 440cm³.
Is this compressor compatible with Knorr-Bremse systems?
Yes, this unit is designed to be compatible with Knorr-Bremse systems used in heavy commercial vehicle air brake architectures.
What are the OE reference numbers of this part?
1400 040 002 directly replaces Knorr-Bremse OE number KZ642.