HD700 Series Drifter – Minimize Noise and Maximize Performance

Drill faster and straighter with the patented HD700 series drifter

The Furukawa HD700 series drifter is designed to minimize drill noise and vibration without sacrificing performance. Incorporating a new piston design, the HD700 series drifter maximizes energy transmission and drills effectively in a variety of rock types.

Integrated Drilling System

The HD700 incorporates all-hydraulic controls for automatic adjustment of impact and feed force to accommodate changing rock conditions. A reactive dampening control system regulates the pressure based on rock hardness, providing superior drilling performance.

Dual-Damper System DDS

FRD has developed the Dual-Damper System, a first in the industry. For maximum energy transfer, active DDS minimizes the return of shock waves by keeping the bit firmly against the rock at all times during drilling.  It also minimizes percussion energy loss, and by optimizing the overall feed force, greatly improves the life of drilling accessories. An additional benefit is the greatly improved life of drilling accessories. Active DDS (U.S. Patent No. 5,896,937).

Compact Valve Design

A compact shuttle valve minimizes loss of oil pressure and maintains total power output of the drifter.

Features & Benefits
Image of HD700 drifter attached to machine | Furukawa FRD

HD700 Series Drifter

HD700 Series Drifter Features & Benefits

  • Combines powerful penetration with agility and easy operation.
  • Integrated drilling system is comprised of all-hydraulic controls and a reactive damper control system, which work together to accommodate changing rock conditions.
  • The hydraulic controls automatically adjust impact and feed force, while the damper control system regulates pressure based on rock hardness.
  • Dual damper system maximizes energy transfer to produce straighter holes.
  • Compact valve design provides rapid valve and piston response for enhanced performance.
  • Easy to maintain accumulators feature long-life diaphragms
  • Rugged, dirt-resistant in-line shuttle valve requires little maintenance.
  • New variable-stroke piston is designed to maximize energy transmission, delivering optimum drill performance in a variety of rock types.
  • Unique dual-damper system provides straighter holes and increased drill tool life.
  • Internally lubricated front-head means no oiler to fill and no bearings to grease.

HD700 Series Drifter Specifications

US StandardMetricUS StandardMetricUS StandardMetric
Max. Impact Pressure2,538 psi17.5 Mpa2,538 psi17.5 Mpa2,538 psi17.5 Mpa
Impact Energy - Long Stroke279 ft-lbs378 joules357 ft-lbs484 joules452 ft-lbs613 joules
Impact Energy - Short Stroke205 ft-lbs278 joules260 ft-lbs353 joules378 ft-lbs513 joules
Blow - Long Stroke2,250 bpm2,250 bpm2,250 bpm
Blow - Short Stroke2,500 bpm2,500 bpm2,500 bpm
Max. Impact Output - Long Stroke19.03 hp14.2 kW24.40 hp18.2 kW30.83 hp23 kW
Max. Impact Output - Short Stroke15.55 hp11.6 kW19.70 hp14.7 kW28.82 hp21.5 kW
Stroke Adjustmentvariable typevariable typevariable type
Max. Rotation Pressure2,624.5 psi18.1 Mpa2,914.5 psi20.1 Mpa2,914.5 psi20.1 Mpa
Max. Rotation Torque486.8 ft-lbs660 Nm1,045.1 ft-lbs1,417 Nm1,045.1 ft-lbs1,417 Nm
Max. No. of Rotation250 rpm190 rpm190 rpm
Flushing SystemSwivel TypeSwivel TypeSwivel Type
Flushing Volume215 psi6.1 m3/min275 psi7.8 m3/min433.5 psi12.3 m3/min
Flushing Pressure149.35 psi1.03 Mpa149.35 psi1.03 Mpa149.35 psi1.03 Mpa
The contents of these specifications are subject to change without notice.