18 Frame block-style plunger pump
1810
- 11.4Flow, l/min
- 689Pressure, bar
- 1500Speed, rpm
- 15.32Power, kW
50 Hz Rated at a motor speed for 50 Hz mains (UK, Europe, Africa, Australia, most of Asia).

Specification
- Flow
- 11.4 l/min
- Pressure
- 689 bar
- Speed
- 1500 rpm
- Absorbed power
- 15.32 kW
- Plunger
- 11 mm
- Shaft
- Solid, Ø30 mm
- Weight
- 27.2 kg
Kits
Seal kits3
| Part number | Description | Per pump | Suppliers |
|---|---|---|---|
| 76810 | Seal kit, NBR (STD) | 1 | |
| 76811 | Seal kit, FPM (.0110) | 1 | |
| 76827 | Seal kit, PTFE (.0710) | 1 |
Valves2
Exploded view
Parts list
Positions are the balloon numbers on Cat Pumps' exploded view.
| Pos | Part number | Description | Qty |
|---|---|---|---|
| 5 | 49651 | Screw, HHC Sems (M8 x 20) | 8 |
| 8 | 134805 | Cover, Bearing | 2 |
| 9 | 855043 | Shim, Split, 2-Piece | 2 |
| 10 | 11340 | O-Ring, Cover, Bearing | 2 |
| 11 | 43495 | Seal, Oil, Crankshaft | 2 |
| 12 | 855044 | Shim, Split, 2-Piece | 2 |
| 15 | 39060 | Bearing, Roller | 2 |
| 20 | 48600 | Rod, Connecting | 3 |
| 25 | 43494 | Crankshaft, Dual-End (M30) | 1 |
| 32 | 43211 | Cap, Oil Filler | 1 |
| 33 | 14177 | O-Ring, Filler Cap | 1 |
| 37 | 92241 | Gauge, Oil, Bubble with Gasket | 1 |
| 38 | 44428 | Gasket, Flat, Flexible | 1 |
| 40 | 92542 | Screw, HHC Sems (M6 x 20) | 4 |
| 48 | 25625 | Plug, Drain ( 1/4" x 19 BSP) | 1 |
| 49 | 23170 | O-Ring, Drain Plug | 1 |
| 50 | 133576 | Cover, Rear | 1 |
| 51 | 44834 | O-Ring, Rear Cover | 1 |
| 53 | 134889 | Crankcase (Includes: 54) | 1 |
| 54 | 27488 | Pin, Guide | 2 |
| 64 | 43507 | Pin, Crosshead | 3 |
| 65 | 48892 | Rod, Plunger, Short | 3 |
| 69 | 126592 | Washer, Seal | 3 |
| 70 | 43500 | Seal, Oil, Crankcase | 3 |
| 75 | 43506 | Slinger, Barrier | 3 |
| 90 | 76595 | Assembly, Plunger, M11 x 80, with Stainless Steel Holder | 3 |
| 95 | 31585 | Stud, Plunger (M6 x 20) | 3 |
| 100 | 995590 | Retainer, Seal | 3 |
| 106 | 76111 | Seal, Low-Pressure | 3 |
| 110 | 76840 | Block, Housing | 1 |
| 116 | 31545 | Washer, Flat (M10) | 4 |
| 117 | 31695 | Screw, HSH (M10 x 100) | 4 |
| 121 | 31565 | Ring, Cylinder Sealing | 9 |
| 122 | 31485 | O-Ring, Front Cylinder, Smaller | 3 |
| 123 | 31475 | O-Ring, Rear Cylinder, Larger | 3 |
| 124 | 76490 | Cylinder | 3 |
| 127 | 76310 | Assembly, V-Packing with Bronze Cylinder Support | 3 |
| 134 | 76350 | Valve, Inlet | 3 |
| 135 | 76115 | Retainer, Inlet Spring | 3 |
| 136 | 31575 | Spring, Inlet Valve | 3 |
| 164 | 76915 | Seat, Ball Assembly with Ceramic Ball | 3 |
| 185 | 76885 | Manifold, Inlet/Discharge, Block-Style | 1 |
| 188 | 31692 | Screw, HSH (M10 x 140) | 8 |
| 250 | 855046 | Protector, Shaft with 2-Stainless Steel Screws | 1 |
| 76850 | Block, Housing, Flushed | 1 | |
| 76495 | Cylinder | 3 |
Motor
A 4-pole motor of at least 15.32 kW drives this pump at 1500 rpm.
| 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 Cat Pumps flange listed for this motor.
- IEC 180, 48 mm shaft (RN 180Ma4) No Cat Pumps flange listed for this motor.
Coupling
The flexible coupling joins the motor shaft to the pump shaft inside the flange.
- IEC 160, 42 mm motor shaft No Cat Pumps coupling listed: you need one for a 42 mm motor shaft to 30 mm pump shaft.
- IEC 180, 48 mm motor shaft No Cat Pumps coupling listed: you need one for a 48 mm motor shaft to 30 mm pump shaft.