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NHDP 120-C plunger pump

NHDP8512CR

Part number 1.904-640.0

  • 8.5Flow, l/min
  • 120Pressure, bar
  • 1450Speed, rpm
  • 1.9Power, kW

50 or 60 Hz The maker gives figures for both supplies.

Hawk NHDP 120-C pump

Specification

Flow
8.5 l/min (10.1 l/min at 60 Hz)
Pressure
120 bar
Speed
1450 rpm (1740 rpm at 60 Hz)
Absorbed power
1.9 kW (2.3 kW at 60 Hz)
Max water temperature
65 °C
Shaft side
Right
Shaft
Solid
Inlet
1/2” G
Outlet
3/8” G
Weight
8.6 kg
Oil
0.4 litres, SAE 10W40

Kits

Extraordinary maintenance6

Part numberDescriptionPer pumpSuppliers
1.099-738.0Plunger, 16 mm3 
1.099-740.0Plunger oil seal kit1 
1.904-249.0Valve plug assembly6 
1.904-740.0Complete manifold1 
1.905-622.0KIT crankcase seals1 
1.905-742.0Connecting rod and plunger rod assembly3 

Ordinary maintenance2

Part numberDescriptionPer pumpSuppliers
1.904-739.0Plunger seals Ø16 mm1 
1.905-617.0Complete valve kit1 

Optional parts1

Part numberDescriptionPer pumpSuppliers
9.853-424.0Threaded brass plug G1/41 

Tools2

Part numberDescriptionPer pumpSuppliers
1.904-744.0Tool-kit1 
1.905-591.0Tool-kit extraordinary1 

Exploded view

Hawk exploded view of the NHDP 120-C pump, with position numbers
Hawk's drawing. The numbers match the positions in the parts list below. Open the picture to zoom in.

Parts list

Positions are the balloon numbers on Hawk's exploded view. A part with no number of its own comes in the kit shown beside it.

PosPart numberDescriptionQtyIn kit
1 9.850-369.0 Crankcase1
2 9.853-555.0 Nhd plus cylinderhead spacer1
3 Kit only Plunger oil seal3 1.099-740.0
4 Kit only O-ring Ø1.78 x 26.73 1.904-739.0, 1.904-740.0
5 Kit only "U" seal Ø16 mm3 1.904-739.0, 1.904-740.0
6 Kit only Pressore Ø16 "V" plastica (nhd)3 1.904-739.0, 1.904-740.0
7 Kit only "V" seal Ø16 mm3 1.904-739.0, 1.904-740.0
8 Kit only Support ring Ø16 mm3 1.904-739.0, 1.904-740.0
9 Kit only Copper washer G1/21 1.904-740.0
10 Kit only Brass plug G1/21 1.904-740.0
11 Kit only Cylinderhead1 1.904-740.0
12 Kit only O-ring Ø1.78 x 15.66 1.904-740.0, 1.905-617.0
13 Kit only Valve assembly6 1.904-740.0, 1.905-617.0
14 Kit only O-ring Ø1,78 x 18.776 1.904-249.0, 1.904-740.0, 1.905-617.0
15 Kit only Valve plug6 1.904-249.0, 1.904-740.0
16 Kit only Brass plug G1/41 1.904-740.0
17 Kit only Copper washer G1/41 1.904-740.0
18 Kit only Manifold stud bolt M14 x 602 1.904-739.0, 1.904-740.0
19 Kit only Lock-washer2 1.904-740.0
20 Kit only Copper washer G3/81 1.904-740.0
21 Kit only Brass plug G 3/82 1.904-740.0, 1.905-622.0
22 Kit only Valve seat6 1.904-740.0, 1.905-617.0
23 Kit only Valve plate6 1.904-740.0, 1.905-617.0
24 Kit only Valve spring6 1.904-740.0, 1.905-617.0
25 Kit only Valve cage6 1.904-740.0, 1.905-617.0
26 9.851-474.0 Screw M6 x 168
27 9.850-379.0 Bearing cover1
28 Kit only Bearing seal1 1.905-622.0
29 9.850-554.0 Crankshaft seal spacer1
30 9.851-198.0 Snap ring Ø25 mm1
31 9.850-460.0 Ball bearing1
32 9.850-223.0 Hollow shaft1
33 9.851-286.0 Oil dip stick1
34 9.850-354.0 Needle roller bearing1
35 Kit only Crankshaft seal1 1.905-622.0
36 9.851-504.0 Hexagonal screw M8 x 254
37 9.851-114.0 Washer Ø8,5 mm4
38 9.850-632.0 Motor flange1
39 Kit only Spring washer Ø6 mm10 1.905-742.0
40 9.851-491.0 Screw M6 x 204
41 Kit only Plunger bolt3 1.099-738.0
42 Kit only Bonded seal - Ø6,7 x 11 x 1 AISI 3043 1.099-738.0
43 Kit only Plunger Ø16 mm3 1.099-738.0
44 Kit only Copper spacer3 1.099-738.0
45 Kit only Plunger rod3 1.905-742.0
46 Kit only Connecting rod pin3 1.905-742.0
47 Kit only Connecting rod3 1.905-742.0
48 Kit only Connecting rod screw6 1.905-742.0
49 Kit only O-ring Ø2.62 x 111.621 1.905-622.0
50 9.850-392.0 Crankcase cover1
51 Kit only O-ring Ø1.78 x 141 1.905-622.0
52 Kit only Sight glass G3/41 1.905-622.0

Motor

A 4-pole motor of at least 1.9 kW drives this pump at 1450 rpm on 50 Hz. Single-phase motors are listed last, for a 230 V supply. On a 60 Hz supply a motor with the same poles turns it at 1740 rpm, where it takes 2.3 kW. Order that motor wound for 60 Hz and rated for at least that power.

MotorkWrpmFrameClassA at 400 VSuppliers
RNE 100a4 2.21455IEC 100IE35.9  
RN 100a4 2.21420IEC 100IE14.9  
RN 90Lc4 uprated 2.21400IEC 90LIE15.4  
RNM 90Lc4 2.21370IEC 90LSingle-phase14.5 at 230 V  
RNM 100a4 2.21430IEC 100Single-phase14 at 230 V  
RNM 112a4 2.21450IEC 112Single-phase12.5 at 230 V  

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 90, 24 mm shaft (RN 90Lc4, RNM 90Lc4) No Hawk flange listed for this motor.
  • IEC 100, 28 mm shaft (RNE 100a4, RN 100a4, RNM 100a4) No Hawk flange listed for this motor.
  • IEC 112, 28 mm shaft (RNM 112a4) No Hawk flange listed for this motor.

Coupling

The flexible coupling joins the motor shaft to the pump shaft inside the flange.

  • IEC 90, 24 mm motor shaft No Hawk coupling listed: you need one for a 24 mm motor shaft to the pump shaft.
  • IEC 100, 28 mm motor shaft No Hawk coupling listed: you need one for a 28 mm motor shaft to the pump shaft.
  • IEC 112, 28 mm motor shaft No Hawk coupling listed: you need one for a 28 mm motor shaft to the pump shaft.

Other Hawk NHDP 120-C pumps

NHDP1012CLNHDP1012CRNHDP1112CLNHDP1112CRNHDP1212CLNHDP1212CRNHDP8512C1LNHDP8512C1RNHDP8512CL