Crankshaft Miller

Crankshaft Miller GPM Series (Internal Type)

Crankshaft Miller GPM Series (Internal Type)

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Machining Part

GPM-F Series

  • Machining of Pin Journal , Main Journal, side/outer diameter of counter weight, and these compound machining.

GPM-U Series

  • Machining R-Groove of Pin Journal, outer diameter of pin journal and semi-finish machining of width
    (High accuracy spec machine)
Pin Journal Machining
Main Journal Machining
Pin, Main JournCompound al Machining

Features

Compared with External Miller

  • Highly Rigid Machine
    • High Rigidity:Fixed outer cutter
    • Highly rigid work support : Used by Stationary chuck
    • Komatsu NTC unique swing arm design
  • High Work Efficiency
    • No need crane: Light weight, small size cutter
  • Highly Economical Machine
    • Long tool life: High rigidity of machine
    • Reduction of running costs: 8 corner inserts are usable.

High Rigidity Cutter

Rigidity:2.5 times of external cutter

Stationary Chuck makes High Rigidity of cutter support

Two times rigidity : Compared with workpiece rotating type

Unique swing arm design

Light weight, small size cutter (About 10kgs for GPM170)

System Integration

The latest system, with its high productivity and reliability, can be provided for the primary machining portion of the crankshaft production line.

System Integration

Specification

Main Specification

[mm]

Items Contents GPM170F-5 GPM190F-5 GPM200F-5 GPM240F2-3 GPM320F2-3
Processing
Capacity
Max. Length of Workpiece 600 750 950 950 (1300) 1500
Max. Swing Diameter 180 200 (190) 210 240 320
E-d/2 25 30 (35) 25 35 45
Suitable Workpiece –3.5L –5.5L –7L –12L –32L

[mm]

Items Contents Unit GPM170F-5 GPM190F-5 GPM200F-5 GPM240F2-3 GPM320F2-3
Number of
main spindle
2 (1) 2 (1) 2 (1) 2 (1) 2 (1)
Cutter Inner Diameter mm 190 210 (200) 220 250 330
Primary
Dimension
A Width mm 4000 4300 4900 6400 6800
B Depth mm 3370 3570 3570 4000 4680
C Work Height mm 1150 1200 1200 1400 1720
D Height mm 2050 2150 2150 2550 3050
Machine Weight kg 17000 20500 21500 33000 60000

Layout

Layout

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