Koken Kogyo Co., Ltd.'s Company Profile and Products

The standard penetration test, which mainly measures the hardness of the ground, is an indispensable measurement method for fut...

• Meters & Instruments

• Soil Hardness Testers

KOKEN's rod handling system RHS-1/1B Washizuri No. 1 is a rod attachment/detachment auxiliary device based on linear motion tha...

• Conveyors

• Carriers

KOKEN's rod handling system RHS-2 Washizuri No. 2 is a rod attachment/detachment auxiliary device based on linear motion that e...

• Conveyors

• Carriers

RPD-180C is a model in which the engine of RPD-160C has been replaced with an engine that complies with Tier 4 Final emission r...

• Agricultural Materials

• Excavators

The RPD-40C is a new core model of the compact RPD crawler that packs the high-speed drilling performance of the Arrow Drill se...

• Agricultural Materials

• Excavators

The RVD-50C is a model equipped with a vibrating head instead of the percussion head of the RPD-50C/50TT.

• Agricultural Materials

• Excavators

This is a large arrow drill with the most power among Koken's RPD rotary percussion drills. Equipped with the powerful large-di...

• Agricultural Materials

• Excavators

RPD-100NTH was born as our new high power standard type percussion drill. Equipped with a high-output, high-performance KD950B ...

• Agricultural Materials

• Excavators

RPD-75DR is our new standard type percussion drill. The guide cell has a length adjustment mechanism that can be used for a var...

• Agricultural Materials

• Excavators

RPD-75SL-H2 is equipped with the standard KD-610 type drill head, and uses a shortened guide cell that uses a cylinder instead ...

• Agricultural Materials

• Excavators

RPD-75SL-H3 is equipped with the standard KD-610 type drill head, and uses a shortened guide cell that uses a cylinder instead ...

• Agricultural Materials

• Excavators

The RPD-75SHF punch is a new lineup of the popular RPD-75 series. A telescoping guide cell arm for flexible installation of va...

• Agricultural Materials

• Excavators

RPD-75R2-DFC is a new lineup of the popular RPD-75 series. Mainly targeting the needs of the anchor method, it combines a larg...

• Agricultural Materials

• Excavators

The RPD-60R3-SP1 was created with the aim of simplifying slope anchor scaffolding by reducing the weight of the drill body, and...

• Agricultural Materials

• Excavators

Among the lightweight and compact arrow drill series designed to reduce construction costs by simplifying work scaffolding for ...

• Agricultural Materials

• Excavators

The new Arrow Drill RPD-30LK has succeeded in reducing weight by incorporating light alloy into major parts such as the drill h...

• Agricultural Materials

• Excavators

RPD-20L was created in response to the need for smaller and lighter anchors at construction sites. The dry weight of the main u...

• Agricultural Materials

• Excavators

This is the largest model of the Bigman BM series. It has the ability to ream and dig up to 6m in diameter, and has achieved nu...

• Agricultural Materials

• Excavators

When introduced in 1993, it was the largest model capable of reaming with a maximum diameter of 4750 mm. In order to take advan...

• Agricultural Materials

• Excavators

The BM-100N has long been the core of the BM series since its introduction in the late 1960s. The BM-150A is a monumental model...

• Agricultural Materials

• Excavators

The BM-100N has long been the core of the BM series since its introduction in the late 1960s. The BM-150A is a monumental model...

• Agricultural Materials

• Excavators

This model was created after requests were made primarily from China to create a machine that utilizes the power swivel type's ...

• Agricultural Materials

• Excavators

This is the latest model of long horizontal boring that KOKEN has cultivated since its Seikan tunnel investigation boring. Hori...

• Agricultural Materials

• Excavators

The midget drill series is compact and lightweight, making it effective for construction work in narrow spaces.It enables a var...

• Agricultural Materials

• Excavators

The midget drill series is compact and lightweight, making it effective for construction work in narrow spaces.It enables a var...

• Agricultural Materials

• Excavators

A lineup of ground improvement machines dedicated to the existing pile burying method, which has a guide cell equipped with two...

This is a lineup of ground improvement machines dedicated to the existing pile burying method, which has a guide cell equipped ...

Groundwater at deep depths of over 1,500 meters can be used for hot springs and geothermal energy. Speed ​​Spa Drill SSD4000 ha...

• Agricultural Materials

• Excavators

This is a top drive specification of a large truck-mounted water well drilling machine.

• Agricultural Materials

• Excavators

This is the top model 1800-39 with a remote control device installed. It is effective in saving labor at the site. A complete s...

KMP (A) -VM1800W-40 is a version of the popular 1800W-39 series whose steps have been changed from a ladder type to a stair typ...

Centralized control from the control panel allows for highly accurate mixing with fewer operations. This VM1800 is the top mode...

Centralized control via the control panel allows for high-precision mixing with fewer operations. This VM1500 is the core model...

The MMP series consists of a cement hopper, lightweight mixer, agitator, and tube pump. This MMP-10A is a basic model consistin...

The MMP series consists of a cement hopper, a lightweight mixer, an agitator, and a tube pump, but this MMP-10A-C does not come...

The MMP series consists of a cement hopper, lightweight mixer, agitator, and tube pump. This MMP-10A250S is the largest model i...

The new grout pump "MG-40FV-HB" is based on the well-established MG-40FV type inverter pump, but the entire unit has been recon...

• Pumps

• Mortar Pumps

The new grout pump “MG-60FV-THS Seiryu” is based on the popular MG-40FV-THSR type inverter pump, and is equipped with a powerfu...

• Pumps

• Mortar Pumps

The new grout pump "MG-40FV-THSR" is based on the well-established MG-40FV type inverter pump, but the entire unit has been rec...

• Pumps

• Mortar Pumps

KOKEN's MG series grout and boring pumps have been used by many people for their stable performance and excellent durability si...

KOKEN's MG series grout and boring pumps have been used by many people for their stable performance and excellent durability si...

The MG pump series has been used by many people for a long time, and in response to many requests, more compact and simplified ...

The MG pump series has been used by many people for a long time, and in response to many requests, more compact and simplified ...

The MG pump series has been used by many people for a long time, and in response to many requests, more compact and simplified ...

The MG pump series has been used by many people for a long time, and in response to many requests, more compact and simplified ...

The MG pump series has been used by many people for a long time, and in response to many requests, a variable displacement type...

The MG pump series has been used by many people for a long time, and in response to many requests, a variable displacement type...

The MG pump series has been used by many people for a long time, and in response to many requests, a variable displacement type...

The MG pump series has been used by many people for a long time, and in response to many requests, a variable displacement type...

KOKEN's tube pump for grouting and boring has a simple structure that uses rollers to compress a rubber tube, discharges fluid,...

• Pumps

• Tubing Pumps

KOKEN's tube pump for grouting and boring has a simple structure that uses rollers to compress a rubber tube, discharges fluid,...

• Pumps

• Tubing Pumps

KOKEN's tube pump for grouting and boring has a simple structure that uses rollers to compress a rubber tube, discharges fluid,...

• Pumps

• Tubing Pumps

KOKEN's ultra-high pressure triple plunger pump PG-150NEW has been further improved by incorporating user feedback. Can be used...

• Pumps

• Pump Plungers

KOKEN's ultra-high pressure triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining

• Pumps

• Pump Plungers

KOKEN's ultra-high pressure triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro min...

• Pumps

• Pump Plungers

KOKEN's triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining

• Pumps

• Pump Plungers

KOKEN's triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining *The photo is M...

• Pumps

• Pump Plungers

KOKEN's triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining *The photo is M...

• Pumps

• Pump Plungers

KOKEN's triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining *The photo is M...

• Pumps

• Pump Plungers

KOKEN's triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining *The photo is M...

• Pumps

• Pump Plungers

KOKEN's triple plunger pump series. ■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining *The photo is M...

• Pumps

• Pump Plungers

This is an inverter-controlled chemical pump for acid- and alkali-resistant two-liquid injection equipped with a ceramic spraye...

• Pumps

• Chemical Feed Pumps

■Main uses ・Jet grouting method ・High pressure injection ・Hydro mining

• Machining / Machine Tools

• Kneaders

Adopts a high-precision air mortar calculator with a dedicated CPU, and also has a guide function, allowing you to set high-pre...

• Meters & Instruments

• Flowmeters

Adopts a high-precision air mortar calculator with a dedicated CPU, and also has a guide function, allowing you to set high-pre...

• Meters & Instruments

• Flowmeters

Adopts a high-precision air mortar calculator with a dedicated CPU, and also has a guide function, allowing you to set high-pre...

• Meters & Instruments

• Flowmeters

Adopts a high-precision air mortar calculator with a dedicated CPU, and also has a guide function, allowing you to set high-pre...

• Meters & Instruments

• Flowmeters

Adopts a high-precision air mortar calculator with a dedicated CPU, and also has a guide function, allowing you to set high-pre...

• Meters & Instruments

• Flowmeters

Adopts a high-precision air mortar calculator with a dedicated CPU, and also has a guide function, allowing you to set high-pre...

• Meters & Instruments

• Flowmeters

HRC-120K was manufactured primarily for the purpose of controlling cement flow rate in grouting methods. By using a switching v...

• Meters & Instruments

• Flowmeters

This is a high-precision flow meter that measures and records grout flow rate and pressure during grout injection work of PC st...

• Meters & Instruments

• Flowmeters

A water meter that automatically measures water to a preset value. Water volume can be detected with higher accuracy than water...

• Meters & Instruments

• Water Meters

Displays the amount of cement milk or mortar injected into the fixed end of the anchor wire and manages it by printing.

• Meters & Instruments

• Flowmeters

Mainly used in small-scale survey drilling, it also includes machine status, feedback from the formation, and warning systems.

• Meters & Instruments

• Data Loggers

DDR-13 mainly records machine conditions and feedback from the strata during ground improvement methods.

• Meters & Instruments

• Data Loggers

■Corresponding strata (soft rock) Mudstone, limestone, sandstone, etc.

■Corresponding strata (soft rock) Mudstone, limestone, sandstone, etc.

■Supported strata (soft rock ~ medium hard rock) Conglomerate, quartz trachyte, hard sandstone, etc.

■Supported strata (soft rock ~ medium hard rock) Conglomerate, quartz trachyte, hard sandstone, etc.

■Supported strata (medium hard rock to hard rock) Hard limestone, basalt, rhyolite, crystalline schist, etc.

■Supported strata (medium hard rock to hard rock) Hard limestone, basalt, rhyolite, crystalline schist, etc.

■Supported strata (hard rock to super hard rock) Rhyolite, granodiorite, silica, etc.

■Supported strata (hard rock to super hard rock) Rhyolite, granodiorite, silica, etc.

*Rod lengths are also available in 1.5m and 2.0m.

*Rod lengths are also available in 1.5m and 2.0m.

*Rod lengths are also available in 1.5m and 2.0m.

*Rod lengths are also available in 1.5m and 2.0m.

By using it in conjunction with the arrow arm (separate item), you can reduce the labor involved in handling the rod.

This is the part that connects the drill head and cleaning swivel.

This is a part that controls drilling/cooling water during drilling. A special spanner is also available.

Boring rods are roughly divided into two types depending on the pipe shape. One is an upset wall rod, which has a thin wall oth...

Boring rods are roughly divided into two types depending on the pipe shape. One is an upset wall rod, which has a thin wall oth...

F series boring rods are for large diameter drilling. The tapered screws are processed and are stronger than straight screws, m...

Three-cone bits are broadly divided into tip insert types for hard rocks and tooth types for soft rocks, and the tooth and tip ...