CK plunger pump
CKD 7.5/44 S
Part number 291900
- 28.4Flow, l/min
- 300Pressure, bar
- 1750Speed, rpm
- 16.3Power, kW
60 Hz Rated at a motor speed for 60 Hz mains (North America, parts of South America and Asia).

Specification
- Flow
- 28.4 l/min
- Pressure
- 300 bar
- Speed
- 1750 rpm
- Absorbed power
- 16.3 kW
- Shaft
- Solid, Ø24 mm
Exploded view (PDF, Udor)Dimensions (PDF, Udor)Data sheet (PDF, Udor)
Kits
Valves1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| KIT 3 | Valve kit |
Plungers1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| KIT 6 | Plunger kit |
High pressure seals1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| KIT 10 | High pressure seal kit |
Low pressure seals1
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| KIT 17 | Low pressure seal kit |
Parts list
The parts that come in this pump's service kits, by Udor part number.
Motor
Rated at 1750 rpm, the speed of a 4-pole motor on a 60 Hz supply. The motors below are listed with their 50 Hz figures and are at least 16.3 kW. Order the one you pick wound for 60 Hz and your supply voltage.
| Motor | kW | rpm | Frame | Class | A at 400 V | Suppliers |
|---|---|---|---|---|---|---|
| RN 180Ma4 | 18.5 | 1465 | IEC 180M | IE1 | 37 | |
| RN 160Lb4 uprated | 18.5 | 1420 | IEC 160L | IE1 | 38 |
The contactor and overload relay for each motor are on the motor's page.
Flange
The flange bolts the pump to the face of the motor. It depends on the motor's IEC frame.
- IEC 160, 42 mm shaft (RN 160Lb4) No Udor flange listed for this motor.
- IEC 180, 48 mm shaft (RN 180Ma4) C15
Coupling
The flexible coupling joins the motor shaft to the pump shaft inside the flange.
- IEC 160, 42 mm motor shaft No Udor coupling listed: you need one for a 42 mm motor shaft to 24 mm pump shaft.
- IEC 180, 48 mm motor shaft No Udor coupling listed: you need one for a 48 mm motor shaft to 24 mm pump shaft.
Gearbox for engine drive
Other Udor CK pumps
CKC 17/30 SCKC 17/36 SCKC 21/30 SCKC 21/36 SCKC 26/30 SCKC 26/35 SCKC 30/30 SCKC 34/25 SCKC 38/20 SCKC 42/20 SCKC 50/20 SCKD 4.5/51 SCKD 5.5/44 SCKD 5.5/51 SCKD 6.0/51 SCKD 6.0/51 T MICKD 7.5/44 T MICKD 8.5/40 SCKD 9.5/36 SCKD 9.5/36 T MICKD 11.0/32 SCKD 12.0/30 S