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Crankshaft Grinding Machines

STH 1800
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STH 1800

STH 1800  Crankshaft Grinding Machine ; is designed for precise grinding of crankshafts and cylindrical parts and to obtain the desired size and surface quality. The main body is completely one piece, the table and the wheelhead are made of high quality gray cast iron. The pneumatic (air assisted) operation of the work heads and the ability to adjust the spindle rotation speeds to the variable speed have made the operation of the machine extremely easy. Wheelhead movement; Servo motor and ball screw system, the right and left movement of the table is made by servo motor and rack gear system.

Since the table movement speeds can be adjusted as desired, cylindrical  spindles can be grinded in the machine. All functions of the machine are done via the the control panel. X and Y axis movements working at serial speed thanks to the joystick arms.

In addition, the manual movement of both axis is made with the handwheel encoders on the control panel and the movement of the two axis can be seen on the digital screen. In this way, it is ensured that the work is done quickly and precisely.

 

TECHNICAL SPECIFICATIONSSTH 1800 
Maximum distance between centers

1900 mm

Maximum distance between self centering chucks1850 mm
Maximum weight admitted on the centers


300 kg

Maximum weight admitted with steady rest

600 kg

Height of centers over table

300 mm

Maximum diameter admitted on steady rest

130 mm

Maximum diameter of grinding wheel

710 mm

Maximum grinding diameter with new wheel

200 mm

Maximum head offset

140 mm

Minimum grinding wheel thickness

18 mm

Maximum grinding wheel thickness

50 mm

Diameter of the chucks

200 mm

Workheads rotation speeds (stepless)10÷100 rpm
Workheads rotation speeds (stepless)

600 mm

Maximum diameter admitted on table

25 mm

Maximum quill traverse on tailstock8 bar
Air pressure for heads displacement

150 mm

Wheelhead fast feed with servo motor

150 mm

Wheelhead maximum centesimal feed with handwheel encoder

1 mm

Wheelhead manual feed with handwheel encoder turn0,005 mm 0,01 mm 0,10 mm

Wheelhead feed with handwheel encoder (between two scales)

0 ÷ 5 mm

Table feed with handwheel encoder3000 mm/1' (one turn)
Fast automatic table traverse speed5,5 kw AC motor
Grinding wheel motor power1,5 kw AC motor
Wheelhead motor gücü
1 kw servo motor
Table movement motor power
1 kw servo motor
Coolant unit motor power0,09 kw AC motor
CODESTANDARD EQUIPMENTSADET / QUANTITY
STD 168PLC sistem dokunmatik ekran ve servo motorlar için

1

STD 169X axis servo motor 

1

STD 170 Y axis servo motor

1

STD 171Y axis handwheel encoder

1

STD 172X axis handwheel encoder

1

STD 173

Steady rest capacity diameter 30 ÷ 160 mm thickness

2

STD 174Grinding wheel face and radius dresser with 1.5 carat diamond

1

STD 175 Shaft centering device with dial gauge 

1 

STD 176Crank pins arm measuring device 

1

STD 177Self centering chuck diameter 200 mm 

2

STD 178 Head displacement checking device with dial gauge

1

STD 179 Pair of flanges for grinding wheel 

2

STD 180Static grinding wheel balancer with rotating plates

1 Set

STD 181Grinding wheel diameter 710x203x22 mm

1 

STD 182Grinding wheel static balancing shaft

1 

STD 183Grinding wheel extractor and bushing threaded hub protection

1 

STD 184 Wheel head and table slide ways lubrication system 

1 Set

STD 185Pneumatic system 

1 Set 

STD 186 Coolant system 

1 Set 

STD 187Set of service tools 

1 Set

STD 188Spot light

1  

STD 189Balancing nuts and rubber 

10

STD 190Operating manual

1 

                                                                                                                          
CODEOPTIONAL EQUIPMENTSADET / QUANTITY
SR 0091 Continuous journal sizing gauge ( Ø 25 - 110 mm )1
SR 0092Measuring fork range from ( Ø 100-200 mm)

1

SR 0093X - Y axis digital readout by linear encoders (Turkish Product)

1

SR 0094 Self centering chuck diameter 200 mm

1

SR 0095Steady rest capacity diameter 30 ÷160 mm thickness 

1

SR 0096 Crankshaft counter balance in front weights (require 2 pcs)

1 Set

SR 0097Crankshaft counter balance back weights (require 2 pcs) 1 Set
SR 0098Portable super finisher with grinding belt 

1

SR 0099Grinding belt for superfinisher 20 mm thickness

1

SR 0100Grinding belt for superfinisher 25 mm thickness 

1

SR 0101Grinding belt for superfinisher 30 mm thickness 

1

SR 0102Tapered center with removing bushes (require 2 pcs)

1 Set

SR 0103Sheared center with removing bush 

1

SR 0104Driving dog capacity diameter ( Ø 20 ÷ 75 mm ) (require 2 pcs)

1 Set

SR 0105Driving dog capacity diameter ( Ø 70 ÷ 140 mm ) (require 2 pcs)

1 Set

SR 0106Cathplates (require 2)

1 Set

SR 0107Pair of flanges for grinding wheel 

1

SR 0108Grinding wheel dresser diamond (1.5 carat)

1

SR 0109Grinding wheel diameter 710x203x18 mm

1

SR 0110Grinding wheel diameter 710x203x20 mm

1

SR0111
Grinding wheel diameter 710x203x24 mm
1
SR 0112
Grinding wheel diameter 710x203x26 mm

1

SR 0113
Grinding wheel diameter 710x203x28 mm

1

SR 0114                         

Grinding wheel diameter 710x203x30 mm 1
SR 0115Grinding wheel diameter 710x203x32 mm 

1

SR 0116 Grinding wheel diameter 710x203x34 mm

1

SR 0117Grinding wheel diameter 710x203x36 mm

1

SR 0118 Grinding wheel diameter 710x203x38 mm1
SR 0119Grinding wheel diameter 710x203x40 mm

1

SR 0120 Grinding wheel diameter 710x203x50 mm

1

SR 0121Spot light 

1

DIMENSIONS

Length

3900 mm

Height

1600 mm

Width

1950 mm

DIMENSIONS WITH PACKING

Length

4050 mm

Height

1800 mm
Width

2100 mm

WEIGHTS
Without packing4800 kg
With packing

5700 kg