Crankshaft processing machines

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In 1971, the company developed and sold the GPM, a machine dedicated to highly efficient crankshaft machining. In 1983, the company began production of a workpiece-fixed internal miller that enables heavy-duty cutting, and the machines that embody new ideas have achieved both dramatically high rigidity and high productivity, and are constantly evolving to meet the needs of the times.

Komatsu NTC technology

We have always been challenging ourselves, not by improving conventional construction methods, but by making improvements without any technical experience. This is where each technology is tied together to raise the bar even higher.

Internal machining method

The internal machining method, in which machining is performed without rotating the workpiece, is equipped with high machine rigidity to handle high loads.

No.1 domestic market share

The GPM series, which has the largest share of the pin miller market in Japan, is designed to reduce non-machining time, such as cutter changeovers, as well as production efficiency.

System integrade

Optimal control by crank full turnkey is available including balance measuring machine, miller, grinding machine, machining center, and transfer equipment made by Komatsu NTC.

Product lineup

Internal millers

External millers

Turning & broaching machines

■ Internal millers

Product appearance Product name Max. workpiece length
mm		 Max. work swing diameter
mm		 Max. machining capacity (E-d/2)
mm		 Target workpiece
Displacement		 Number of spindles Cutter I.D.
mm		 Machine size (W x D x H)
mm		 Machine weight
kg
GPM150 450 145 25 ～1.5L 1 Φ152 2,200 x 2,200 x 1,500 6,000
GPM170 600 180 25 ～3.5L 2 Φ190 4,000 x 3,420 x 2,050 17,000
GPM190 750 190 35 ～5.5L 2 Φ210 4,300 x 3,520 x 2,150 20,500
GPM240 950 / 1,300 240 35 ～12L 2 Φ250 6,400 x 4,000 x 2,550 33,000
GPM320 1,500 320 45 ～32L 2 Φ330 6,800 x 4,680 x 3,050 60,000

■ External millers

Product appearance Product name Max. workpiece length
mm		 Max. work swing diameter
mm		 Max. machining capacity (E-d/2)
mm		 Target Workpiece
Displacement		 Number of spindles Cutter I.D.
mm		 Machine size (W x D x H)
mm		 Machine weight
kg
GPM1100 2,600 / 4,000 440 / 512 50 / 65 ～100L 1 Φ1,150 9,400 x 5,415 x 2,900 59,000
GPM1600 6,000 / 8,000 960 100 ～1,000L 1 Φ1,600 15,250 x 9,000 x 3,350 160,000
GPM2000 13,000 1,600 180 ～3,500L 1 Φ2,000 22,000 x 7,460 x 4,000 270,000

■ Turning & broaching machines

Product appearance Product name Max. workpiece length
mm		 Max. work swing diameter
mm		 Max. machining capacity (E-d/2)
mm		 Target workpiece
Displacement		 Number of spindles Cutter I.D.
mm		 Machine size (W x D x H)
mm		 Machine weight
kg
GPR250 600 250 Φ20 2 Φ625 3,800 x 2,960 x 2,175 10,000
GPR300 700 300 Φ30 2 Φ700 4,800 x 3,000 x 3,000 20,000

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Crankshaft processing machines