Manufacturing and Sales：Drilling and grout pump

HOME > Manufacturing and Sales > Drilling and grout pump

Development of
Renewable Energy

Construction Works and
Scientific Investigation

Development of
Natural Resources

Environmental Investigation and
Measure for Soil and Groundwater

Housing Ground
Improvement Work

Foundation Work

Landslide Prevention Work

Action for new market

Drilling Tools

Drilling and grout pump

Mud Mixer

DTH Hammer

Drilling lubricants

"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
Model Name	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	210	170	140	110	90	70
Max. Discharge Pressure	MPa	2.3	2.8	3.4	4.4	5.4	6.9
No. of Stroke	rpm	120	95	120	95	120	95
Input Shaft Rotation Speed	rpm	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed
Input Shaft Rotation Speed	rpm	600	475	600	475	600	475
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 Unit	kW	11

Model Name		NP-400
Type		Duplex Double Acting Piston pump
Piston Diameter	mm	114		102		89		73
Discharge Volume	L/min	395	335	310	260	230	195	150	130
Max. Discharge Pressure	MPa	2.2	2.5	2.6	3.1	3.5	4.2	5.4	6.3
No. of Stroke	rpm	100	85	100	85	100	85	100	85
Input Shaft Rotation Speed	rpm	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed
Input Shaft Rotation Speed	rpm	470	400	470	400	470	400	470	400
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 Unit	kW	18.5

Model Name		NP-700
Type		Duplex Double Acting Piston pump
Piston Diameter	mm	140		127		114		102		89
Discharge Volume	L/min	730	615	600	505	480	405	375	315	280	235
Max. Discharge Pressure	MPa	1.9	2.2	2.3	2.6	2.8	3.3	3.6	4.2	4.8	5.7
No. of Stroke	rpm	95	80	95	80	95	80	95	80	95	80
Input Shaft Rotation Speed	rpm	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed
Input Shaft Rotation Speed	rpm	470	395	470	395	470	395	470	395	470	395
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 Unit	kW	30

Model Name		NP-1000
Type		Duplex Double Acting Piston pump
Piston Diameter	mm	165		152		140		127		114
Discharge Volume	L/min	1050	865	890	730	740	610	605	500	480	395
Max. Discharge Pressure	MPa	2.4	2.8	2.7	3.3	3.3	4.0	3.3	4.9	5.1	6.2
No. of Stroke	rpm	85	70	85	70	85	70	85	70	85	70
Input Shaft Rotation Speed	rpm	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed
Input Shaft Rotation Speed	rpm	420	345	420	345	420	345	420	345	420	345
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 Unit	kW	55

Model Name		NP-1400
Type		Duplex Double Acting Piston pump
Piston Diameter	mm	190		178		165		152		140
Discharge Volume	L/min	1430	1145	1240	990	1060	845	895	715	740	590
Max. Discharge Pressure	MPa	2.4	2.9	2.6	3.3	3.1	3.9	3.7	4.7	4.5	5.7
No. of Stroke	rpm	75	60	75	60	75	60	75	60	75	60
Input Shaft Rotation Speed	rpm	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed	High Speed	Low Speed
Input Shaft Rotation Speed	rpm	370	295	370	295	370	295	370	295	370	295
Stroke Length	mm	175
Inlet Diameter	mm	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 Unit	kW	75

TOA-TONE BORING CO.,LTD.

NP-200

NP-400

NP-700

NP-1000

NP-1400