3CP plunger pump
3CP1211CS
- 18.9Flow, l/min
- 117Pressure, bar
- 1750Speed, rpm
- 4.3Power, kW
60 Hz Rated at a motor speed for 60 Hz mains (North America, parts of South America and Asia).

Specification
- Flow
- 18.9 l/min
- Pressure
- 117 bar
- Speed
- 1750 rpm
- Absorbed power
- 4.3 kW
- Plunger
- 18 mm
- Shaft
- Solid, Ø16.5 mm
- Weight
- 6.7 kg
Kits
Valves4
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 30982 | Valve kit, NBR (STD) | 1 | |
| 31216 | Valve kit, FPM (.0110) | 1 | |
| 31217 | Valve kit, EPDM (.0220) | 1 | |
| 76690 | Valve kit, FFKM (.0770) | 1 |
Seal kits6
Exploded view
Parts list
Positions are the balloon numbers on Cat Pumps' exploded view.
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 5 | 92538 | Screw, HHC Sems (M6 x 16) | 8 |
| 8 | 46901 | Cover, Bearing | 1 |
| 10 | 14028 | O-Ring, Cover, Bearing | 2 |
| 11 | 43222 | Seal, Oil, Crankshaft | 1 |
| 15 | 14480 | Bearing, Ball | 2 |
| 20 | 48730 | Rod Connecting | 3 |
| 25 | 48805 | Crankshaft, Single-End (M15) | 1 |
| 30 | 48259 | Cover, Bearing, Blind | 1 |
| 32 | 46798 | Cap, Oil Filler | 1 |
| 33 | 14179 | O-Ring, Oil Filler Cap | 1 |
| 37 | 92241 | Gauge, Oil, Bubble with Gasket | 1 |
| 38 | 44428 | Gasket, Flat, Oil Gauge | 1 |
| 40 | 92538 | Screw, HHC Sems (M6 x 16) | 4 |
| 48 | 25625 | Plug, Drain (1/4" x 19 BSP) | 1 |
| 49 | 23170 | O-Ring, Drain Plug | 1 |
| 50 | 46939 | Cover, Rear | 1 |
| 51 | 14041 | O-Ring, Rear, Cover | 1 |
| 53 | 48644 | Crankcase | 1 |
| 64 | 46615 | Pin, Crosshead | 3 |
| 65 | 48807 | Rod, Plunger | 3 |
| 70 | 46839 | Seal, Oil, Crankcase | 3 |
| 75 | 48809 | Slinger, Barrier, Flat | 3 |
| 88 | 45697 | Washer, Keyhole (M18 x M10) | 3 |
| 90 | 46976 | Plunger (M18 x 43) | 3 |
| 97 | 76729 | Washer, Flat (Not shown, use with 76730) | 3 |
| 98 | 46730 | Washer, Seal | 3 |
| 99 | 48201 | Retainer, Plunger | 3 |
| 100 | 46541 | Retainer, Seal | 3 |
| 106 | 44053 | Seal, Low-Pressure with SS-Spring | 3 |
| 110 | 48556 | Manifold, Inlet | 1 |
| 117 | 119034 | Screw, HSH (M8 x 35) | 4 |
| 125 | 44652 | Seal, High-Pressure with SS-Support | 3 |
| 143 | 17547 | O-Ring, Adapter, Inlet Valve, Rear | 3 |
| 150 | 44060 | Adapter, Inlet Valve | 3 |
| 154 | 43893 | O-Ring, Adapter, Inlet Valve, Front | 3 |
| 155 | 26089 | O-Ring, Adapter, Discharge Valve, Rear | 3 |
| 157 | 48810 | Adapter, Discharge Valve | 3 |
| 159 | 26089 | O-Ring, Adapter, Discharge Valve, Front | 3 |
| 164 | 44058 | Seat | 6 |
| 165 | 44001 | O-Ring, Seat | 6 |
| 166 | 543669 | Valve | 6 |
| 167 | 44056 | Spring | 6 |
| 168 | 44055 | Retainer, Spring | 6 |
| 185 | 48558 | Manifold, Discharge | 1 |
| 186 | 15847 | Lockwasher (M10) | 6 |
| 188 | 87950 | Screw, HSH (M10 x 35) | 2 |
| 189 | 87952 | Screw, HSH (M10 x 55) | 4 |
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 4.3 kW. Order the one you pick wound for 60 Hz and your supply voltage.
| Motor | kW | rpm | Frame | Class | A at 400 V | Suppliers |
|---|---|---|---|---|---|---|
| RNE 132Sa4 | 5.5 | 1450 | IEC 132S | IE3 | 10.6 | |
| RN 132Sa4 | 5.5 | 1430 | IEC 132S | IE1 | 11.4 | |
| RN 112b4 uprated | 5.5 | 1420 | IEC 112 | IE1 | 12.2 |
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 112, 28 mm shaft (RN 112b4) No Cat Pumps flange listed for this motor.
- IEC 132, 38 mm shaft (RNE 132Sa4, RN 132Sa4) No Cat Pumps flange listed for this motor.
Coupling
The flexible coupling joins the motor shaft to the pump shaft inside the flange.
- IEC 112, 28 mm motor shaft No Cat Pumps coupling listed: you need one for a 28 mm motor shaft to 16.5 mm pump shaft.
- IEC 132, 38 mm motor shaft No Cat Pumps coupling listed: you need one for a 38 mm motor shaft to 16.5 mm pump shaft.
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