PR-Series

Precise complete machining

Precise complete machining

The horizontal boring mills of the PR-series with floor plate and RAM are the ideal machine tools for the machining of large work pieces. Besides allowing stable heavy roughing, they also allow highly precise finishing and optimal 5-side-machining of work pieces up to 250 t.

Flexibility, efficiently applied

The integration of floor plates, variable clamping tables and trunnion devices as well as efficient and automatic changing of different additional milling units or heavy tools via a pick-up-station guarantees the efficient machining of the work pieces.

Classification

  • P  Floor type
  • C  With automatic tool changer
  • R  With RAM

Type range

  • I, II, III

Boring spindle diameters available

  • 130, 150, 162, 180, 200, 262 mm

 

 

The advantages of the PR-series at one glance

  • Promotes both rough machining and high precision super finishing consecutively
  • Double hydrostatic guideways completely enclosing the RAM
  • Dynamically controlled hydrostatic systems
  • Extremely rigid and heavily ribbed column
  • Compensation of spindle and RAM droop as well as of column tilt
  • Length compensation of boring spindle and RAM (option)
  • Temperature-controlled hydrostatic oil for thermal stability of the machine

The PR 130 / PR 150 / PR 160 / PR 180 design

The robust machine bed with a double pinion drive with zero backlash within the gear rack as well as the strongly ribbed column result in extreme stiffness. Optionally, the guide ways are designed either with regulated hydrostatics or preloaded linear-compact roller guides.

Moreover, various features provide precision for all applications: hydrostatic guides, a triple RAM sag compensation, a double precision spindle bearing with permanent lubrication and a thermic monitoring of the spindle bearing in the RAM.

The PR 200 / PR 260 design

The cast beds of the PR 200 and PR 260 are strongly ribbed and promote vibration damping, with guide ways which are amply dimensioned. Water cooled AC-motors allow a sufficient driving power of the boring spindle and high feed forces in all axes.

X-, Y- and Z-axes are hydrostatic, so that even during the heaviest roughing operations the highest precision is achieved without friction or wear. The RAM is hydrostatically guided as well, and manufactured with a spindle bearing, using a preloaded high precision spindle and a cylinder roller bearing.

Options

For the machines of the PR-series, there are numerous options available, to adapt them perfectly to the particular application:

Automatic tool changer

The tool magazines can accommodate up to 200 tools. The tool change can be efficiently carried out either horizontally or vertically.

Automatic accessory change from the pick-up station

A comprehensive range of milling heads, NC facing heads, support bearings, spindle extensions and special tools can be changed fully automatically and focusing on time and efficiency.

Process monitoring

The optimization of the machining processes results from active tool monitoring and automatic tool measurement, torque and collision monitoring as well as an operating data acquisition system and remote diagnostics using teleservice.

CNC-controls

Four variants are available: Siemens 840 D sl, Heidenhain iTNC 530, Heidenhain TNC 640 or Fanuc 31iB.

Technical complete solutions

The PR-series is flexibly applicable, due to rotary and traversing tables allowing up to 250 t, tilting tables with positional rotary axis of 0°-90° as well as sine tables and fast rotating tables, including a broad spectrum of milling heads.

Comprehensive range of equipment

You can choose from our broad spectrum of prefix aggregates as well as rotary, traversing and tilting tables.

Technical data PR130/150
Boring spindle  
Diameter mm
130 / 150
Drive power,
max.
kW
63
Torque,
max.
Nm
3,100
Engine speed range, stepless, max. min-1
5...5,000
Traverses  
X-axis mm
4,000
Extension in steps of mm
1,000
Y-axis mm
2,000
Extension in steps of 500 mm up to max. mm
4,500
Z-axis mm
1,100
W-axis mm
750
Feed / Rapid traverses  
Feed range of all axes mm/min
10,000
Rapid traverse of the linear axes, max. mm/min
32,000
Technical data PR150/160/180
Boring spindle  
Diameter mm
150 / 162 / 180
Drive power,
max.
kW
84
Torque,
max.
Nm
7,500
Engine speed range, stepless, max. min-1
5...3,500
Traverses  
X-axis mm
4,000
Extension in steps of mm
1,000
Y-axis mm
2,500
Extension in steps of 500 mm up to max. mm
6,500
Z-axis mm
1,500
W-axis mm
1,000
Feed / Rapid traverses  
Feed range of all axes mm/min
10,000
Rapid traverse of the linear axes, max. mm/min
28,000
Technical data PR200/260
Boring spindle  
Diameter mm
200 / 262
Drive power,
max.
kW
128
Torque,
max.
Nm
19,000
Engine speed range, stepless, max. min-1
5...2,200
Traverses  
X-axis mm
4,000
Extension in steps of mm
1,000
Y-axis mm
3,000
Extension in steps of 500 mm up to max. mm
10,000
Z-axis mm
1,700
W-axis mm
1,400
Feed / Rapid traverses  
Feed range of all axes mm/min
8,000
Rapid traverse of the linear axes, max. mm/min
20,000

     

  • P  Floor type
  • C  With automatic tool changer
  • R  With RAM
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