Comec ACF170 Cylinder Boring Milling Machine

Stock #1450New Machine; Call for Pricing

The cylinder boring/resurfacing machine ACF170 includes both main reconditioning operations of automotive and truck cylinder blocks - boring and resurfacing - in one single machine, with performances that are usually available only on higher level models. Despite its compact dimensions, the technical features of this machine ensure considerable work capacities, thanks to the wide longitudinal and transverse table feed and to the vertical feed of the head. The excellent qualities of finishing and precision are obtained by combining a tested mechanical structure with innovative technical solutions, which improve the performance and versatility of the machine.

Browse other cylinder boring machines.

Images may show the product equipped with optional accessories



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 30÷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 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

3/8” CBN/PCD insert tool holder

CBN insert Comec

1/2” CBN Insert for cast iron


1/2” PCD Insert for aluminium

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


1/2” CBN or PCD milling plate dia. 320 mm (available only for ACF)

1/2”CBN/PCD insert tool holder

3/8” CBN Insert for cast iron

3/8” PCD Insert for aluminium

V-block adjustable universal fixture