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DPL/DPL-J

PORTAL LATHE FOR WHEELSET REPROFILING AND BRAKE DISC TURNING

Specifically designed and manufactured for high accuracy railway wheel reprofiling, plus brake disc machining.
It features the latest smart manufacturing technology to maximize your throughput.
See this machine in action
Technology
Roller type portal lathe
Dpl 0
Full cast iron machine structure

Best performance against temperature variations. Guarantees machine stability and rigidity.

Friction rollers
  • 6 friction rollers (3 on each wheel), with wheel flange contact
  • Lower rollers lift the wheelset up to the tailstock height
  • Pressure automatically adjusted to suit the cutting conditions
Tailstocks

Two tailstocks are hydraulically actuated and include a mechanical blocking system for the best performance.

X and Z carriages
  • Three linear guideways (Z) with recirculating roller box bearings, actuated by servomotor and gearbox
  • Houses the cutting tools, measuring system, and video-cameras
  • Suction nozzles that remove chips, fumes, and mist
Wheel measuring system

Mounted on retractable support, protected from chips or impacts. It measures:

  • Initial measurement
  • Final measurement
  • Option to add brake disc wear measurement
Swarf treatment (crusher and conveyor)

Provides efficient chip removal for proper machine operation.

Technology DPL-J
Jaw type portal lathe
Dpl j
Full cast iron machine structure

Best performance against temperature variations. Guarantees machine stability and rigidity.

Clamping chucks
  • Spindle motor power = 2 x 110 hp (2 x 81 kW)
  • Transmission via belt pulley and gearboxes
  • The 4 axial clamping jaws are located on both heads
  • Roller bearings designed for high loads, adequately sealed and lubricated
Center points

Both centers (hydraulically actuated) guarantee a fixed and repetitive wheelset alignment.

A hydraulic clamping bush locks the center, guaranteeing the correct position.

X and Z cross slides
  • The Z axis rides on 3 INA RUE-65 linear guides, providing great rigidity and precision
  • Hardened slideways guide the X axis
  • The X and Z axes are driven by an Ø3.14" (80 mm) ball screw
Wheel measuring system

Mounted on a retractable support, protected from chips or impacts. It measures:

  • Initial measurement
  • Final measurement
  • Option to add brake discs´ wear measurement
Swarf treatment (crusher and conveyor)

Provides efficient chip removal for proper machine operation.

Customization
Configure your DPL/DPL-J
Wheel machining
  • Measuring (1) (6)
  • Rolling profile (2)
  • The inner side of the wheel (3)
  • External face of the wheel (4)
  • End-of-life groove (5)

In addition, the brake disc machining tool allows machining:

  • Brake discs located on the wheel (1)
  • Brake discs located on the axle (2)
Technical data
DPL DPL-J
Track gauge mm 1000/1676 1000/1676
Min. / max. wheel diameter mm 640/1400 640/1400
Min. / max. brake disc diameter mm 300/1100 300/1100
Drive type - Friction rollers Clamping chuck + Jaws
Max. chip section per tool post mm2 18 35
Wheel Ø difference mm < 0,15 < 0,15
Wheel circularity – Radial runout mm < 0,1 < 0,1
Lateral wobble of the rim of the wheel – Axial runout mm < 0,2 < 0,2
Wheel profile geometry mm < 0,2 < 0,2
Surface roughness µm Ra <6,3 Ra <6,3
DPL DPL-J
Track gauge in 39.4/66 39.4/66
Min. / max. wheel diameter in 25/55 25/55
Min. / max. brake disc diameter in 11.8/43.3 11.8/43.3
Drive type - Friction rollers Clamping chuck + Jaws
Max. chip section per tool post in2 0.028 0.05
Wheel Ø difference in ≤ 0.006 ≤ 0.006
Wheel circularity – Radial runout in ≤ 0.0039 ≤ 0.0039
Lateral wobble of the rim of the wheel – Axial runout in ≤ 0.0079 ≤ 0.0079
Wheel profile geometry in ≤ 0.0079 ≤ 0.0079
Surface roughness µin Ra <0.24 Ra <0.24
Workpieces

Wheelset

Service
We offer services to keep your DPL/DPL-J in the best condition
  • Yearly preventive maintenance, calibration, and customized plans managed by a seasoned team
  • We are prepared to assist you remotely. We respond and manage your request worldwide

 

DPL
ESTARTA
Digital
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Catalog DPL
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Catalog DPL-J
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