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Cylinder boring machine
The AC170 boring machine has been manufactured to recondition cylinder blocks of motor cars and trucks with a diameter of 35 ÷170 mm. The excellent qualities of finishing and precision are ensured by the combination of a tested mechanic structure with new innovative technical solutions, which enhance the performance and versatility of the machine.
All machine parts supplied with the standard equipment, such as the fast cylinder centering device with scanning level on the boring bar and the centesimal dial indicator, the clear and straightforward control panel, as well as the depth of boring control dial gauge, can ease and speed up the work. Moreover, the adjustable boring bar's rotation speed provide for the best finishing.

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Standard equipment
  • Adjustable spindle speed with digital indicator
  • Adjustable boring bar feed
  • Adjustable table feed (only model ACF)
  • Tool setting dial indicator with magnetic base
  • Depth of boring device with dial indicator
  • Precision centering device with dial gauge
  • Adjustable control stop
  • PV0160 Pair of parallel supports
  • Wrench set
  • Instruction manual
Boring range
35 ÷170 mm
Max Vertical travel of the head
670 mm
Max distance from head to table
940 mm
Distance from spindle center to column
290 mm
Spindle rotation speed (adjustable)
75÷700 rpm
Spindle feed
0÷175 mm/min.
Table surface
1040x370 mm
Max longitudinal table travel
1000 mm
Max transverse table travel
200 mm
Spindle motor power
1.5 kW
Rapid head feed motor power
0.37 kW
Dimensions (LxWxH)
1030x1020x2000 mm
Net weight
1150 Kg
Gross weight
1330 Kg
Accessories and spare parts
PV1516 60° - 90° V-block blueprinting mounting fixture
PV0025 Pair of fast clamping column 
PV0007 Pair of parallel supports  H=49mm
PV0160 Pair of parallel supports
Comec B03560 boring spindle
Ø 35÷60 mm L = 330 mm boring kit with dial gauge adjustment
Comec B06085 boring spindle
Ø 60÷85 mm L = 320 mm boring kit with dial gauge adjustment
Comec C03560 boring spindle
Ø 35÷60 mm L = 330 mm boring kit with pre-setting system
Comec C06085 boring spindle
Ø 60÷85 mm L = 320 mm boring kit with pre-setting system
Comec C85170 boring spindle
Ø 85÷170 mm L= 360 mm boring kit with pre-setting system
Comec B85170 boring spindle
Ø 85÷170 mm L = 360 mm boring kit dial gauge adjustment
V-block adjustable universal fixture