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TOA-TONE BORING CO.,LTD.

"NP" series is the pump with high performance and durability recommending with confidence.

During drilling work by drilling machine, circulation fluid is generally used for the purposes of the protection of drilled hole from caving, removal of cuttins, reduction of rotating resistance of drill rod, cooling and cleaning of drill bit. Circulation fluid is water-based mud mainly mixed with fresh water and bentonite and it is important to select a proper drilling pump with enough discharge to enable drilling work efficiently.
There are two types of circulation pump. The one is rotary type and the other is reciprocating type. Because of easy control of discharge volume and superior usability under high pressure condition, reciprocating type pump is popularly used. Among verious reciprocating pumps, double acting piston pump which has suction and discharge valve at both ends of piston and can discharge double volume at one stroke piston motion by pushing and pulling the piston is the most popular pump.

Product introduction

Model
Name
Guideline of Application
Borehole
Installation of
Underground
Thermal Energy
Geothermal
Exploration
Investigation of
Construction
Works
Scientific
Investigation
Development
of Hot Spring
Development
of Groundwater
Development
of Mineral
Resources
Cast-in-Place Pile
Construction
Landslide
Prevention
Work
NP-
200
           
NP-
400
       
NP-
700
   
NP-
1000
   
NP-
1400
     

Drilling and grout pump("NP" series)

Since NP pump is duplex double acting piston type, suction and discharge motions are done at two times under one reciprocating motion of the piston. Twin cylinders mechanism has a larger discharge volume and has a wide discharge volume and pressure range compared with other type pump. NP series pump is selectable from five models (NP-200, NP-400, NP-700, NP-1000 and NP-1400). Four models except NP-200 can be equipped with transmission.
NP series pump is used as drilling pump in many cases and also as grout pump injecting cement milk or distributing turbid water.

We can offer the equipment with "Only One" features upon customer's request.

Model Name NP-200
Type Duplex Double Acting Piston pump
Piston
Diameter
mm 89 73 60
Discharge
Volume
L/min 210170 140110 9070
Max. Discharge
Pressure
MPa 2.32.8 3.44.4 5.46.9
No. of
Stroke
rpm 12095 12095 12095
Input Shaft
Rotation Speed
rpm High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed
600475 600475 600475
Stroke
Length
mm 75
Inlet
Diameter
mm 65
Outlet
Diameter
mm 38 or 25
Weight w/o
Power Unit
kg 550
Dimensions
(L×W×H)
With Power Unit
mm 2400×560×1245
Power UnitkW 11
Model Name NP-400
Type Duplex Double Acting Piston pump
Piston
Diameter
mm 114 102 89 73
Discharge
Volume
L/min 395335 310260 230195 150130
Max. Discharge
Pressure
MPa 2.22.5 2.63.1 3.54.2 5.46.3
No. of
Stroke
rpm 10085 10085 10085 10085
Input Shaft
Rotation Speed
rpm High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed
470400 470400 470400 470400
Stroke
Length
mm 100
Inlet
Diameter
mm 75 or 65
Outlet
Diameter
mm 50 or 38
Weight w/o
Power Unit
kg 980
Dimensions
(L×W×H)
With Power Unit
mm 2790×670×1435
Power UnitkW 18.5
Model Name NP-700
Type Duplex Double Acting Piston pump
Piston
Diameter
mm 140 127 114 102 89
Discharge
Volume
L/min 730615 600505 480405 375315 280235
Max. Discharge
Pressure
MPa 1.92.2 2.32.6 2.83.3 3.64.2 4.85.7
No. of
Stroke
rpm 9580 9580 9580 9580 9580
Input Shaft
Rotation Speed
rpm High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed
470395 470395 470395 470395 470395
Stroke
Length
mm 130
Inlet
Diameter
mm 100 or 75
Outlet
Diameter
mm 65 or 50
Weight w/o
Power Unit
kg 1600
Dimensions
(L×W×H)
With Power Unit
mm 3040×830×1575
Power UnitkW 30
Model Name NP-1000
Type Duplex Double Acting Piston pump
Piston
Diameter
mm 165 152 140 127 114
Discharge
Volume
L/min 1050865 890730 740610 605500 480395
Max. Discharge
Pressure
MPa 2.42.8 2.73.3 3.34.0 3.34.9 5.16.2
No. of
Stroke
rpm 8570 8570 8570 8570 8570
Input Shaft
Rotation Speed
rpm High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed
420345 420345 420345 420345 420345
Stroke
Length
mm 150
Inlet
Diameter
mm 125
Outlet
Diameter
mm 75 or 65
Weight w/o
Power Unit
kg 2700
Dimensions
(L×W×H)
With Power Unit
mm 3770×950×1905
Power UnitkW 55
Model Name NP-1400
Type Duplex Double Acting Piston pump
Piston
Diameter
mm 190 178 165 152 140
Discharge
Volume
L/min 14301145 1240990 1060845 895715 740590
Max. Discharge
Pressure
MPa 2.42.9 2.63.3 3.13.9 3.74.7 4.55.7
No. of
Stroke
rpm 7560 7560 7560 7560 7560
Input Shaft
Rotation Speed
rpm High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed High SpeedLow Speed
370295 370295 370295 370295 370295
Stroke
Length
mm 175
Inlet Diametermm 150
Outlet
Diameter
mm 100 or 75
Weight w/o
Power Unit
kg 3400
Dimensions
(L×W×H)
With Power Unit
mm 4530×1080×2170
Power UnitkW 75

TOA-TONE BORING CO.,LTD.

TOA-TONE BORING CO.,LTD.
NP-200
TOA-TONE BORING CO.,LTD.
NP-400
TOA-TONE BORING CO.,LTD.
NP-700
TOA-TONE BORING CO.,LTD.
NP-1000
TOA-TONE BORING CO.,LTD.
NP-1400