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Crankshaft Grındıng Machınes

STH 1800 S
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STH 1800 S

STH 1800 S Nc Control 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 touch screen on 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 S
Maximum distance between centers 

1900 mm

Maximum distance between self centering chucks 1850 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 thickness18 mm
Maximum grinding wheel thickness

50 mm

Diameter of the chucks 

200 mm

Workheads rotation speeds (stepless)10÷100 rpm
Maximum diameter admitted on table

600 mm

Maximum quill traverse on tailstock 

25 mm

Air pressure for heads displacement8 bar
Wheelhead fast feed with servo motor 

150 mm

Wheelhead maximum centesimal feed with handwheel encoder                                      

150 mm

Wheelhead manual feed with handwheel encoder turn

1 mm

Wheelhead feed with handwheel encoder (between two scales)0.005 mm,  0.01 mm,  0.10 mm

Table feed with handwheel encoder (one turn)

0 ÷5 mm

Fast automatic table traverse speed 3000 mm/1ʹ 
Grinding wheel motor power5.5 kw AC motor
Headstock motor power 1.5 kw AC motor
Wheelhead motor power 1 kw servo motor
Table movement motor power 1 kw servo motor
Coolant unit motor power 0.09 kw AC motor
CODESTANDARD EQUIPMENTS QUANTITY
STD 20010 inch touch screen panel

1

STD 201PLC system for touch screen panel and servo motors

1

STD 202X axis servo motor

1

STD 203Y axis servo motor

1

STD 204X axis handwheel encoder

1

STD 205

Y axis handwheel encoder

1

STD 206Remote access device

1

STD 207Steady rest capacity diameter 30 ÷ 160 mm thickness

2 

STD 208Grinding wheel face and radius dresser with 1.5 carat diamond

1

STD 209Shaft centering device with dial gauge 

1

STD 210Crank pins arm measuring device 

1

STD 211 Self centering chuck diameter 200 mm

2

STD 212Head displacement checking device with dial gauge 

1 

STD 213Pair of flanges for grinding wheel 

2 

STD 214Static grinding wheel balancer with rotating plates

1 Set

STD 215Grinding wheel diameter 710x203x22 mm 

1 

STD 216Grinding wheel static balancing shaft 

1 

STD 217Grinding wheel extractor and bushing threaded hub protection

1 

STD 218Wheel head and table slide ways lubrication system 

1 set

STD 219Pneumatic system 

1 set

STD 220Coolant system

1 set

STD 221Set of service tools 

1 set

STD 222Spot light

1 

STD 223Balancing nuts and rubbers

10 

STD 224Operating manual

1 


                                                                                                                          
CODEOPTIONAL EQUIPMENTS QUANTITY
SR 0132Continuous journal sizing gauge ( Ø 25-110 mm)

1

SR 0133Measuring fork range from ( Ø 100-200 mm)

1

SR 0134Self centering chuck diameter 200 mm

1

SR 0135Steady rest capacity diameter 30 ÷ 160 mm thickness

1

SR 0136Crankshaft counter balance in front weights (require 2 pcs)

1 

SR 0137Crankshaft counter balance back weights (require 2 pcs)

1 

SR 0138Portable super finisher with grinding belt  

1 

SR 0139Grinding belt for superfinisher 20 mm thickness

1

SR 0140Grinding belt for superfinisher 25 mm thickness 

1

SR 0141Grinding belt for superfinisher 30 mm thickness

1

SR 0142Tapered center with removing bushes (require 2 pcs)

1 set

SR 0143Sheared center with removing bush

1

SR 0144Driving dog capacity diameter ( Ø 20 ÷ 75 mm) (require 2pcs)

1 set

SR 0143Driving dog capacity diameter (Ø70÷140 mm) (require 2pcs)

1 set

SR 0146Cathplates  (require 2 pcs)

1 set

SR 0147Pair of flanges for grinding wheel

1

SR 0148Grinding wheel dresser diamond (1.5 carat)

1

SR 0149Grinding wheel 710x203x18 mm 

1

SR 0150Grinding wheel 710x203x20 mm 

1

SR 0151Grinding wheel 710x203x24 mm 

1

SR 0152Grinding wheel 710x203x26 mm 

1

SR 0153Grinding wheel 710x203x28 mm 

1

SR 0154Grinding wheel 710x203x30 mm

1

SR 0155Grinding wheel 710x203x32 mm

1

SR 0156Grinding wheel 710x203x34 mm

1

SR 0157Grinding wheel 710x203x36 mm

1

SR 0158Grinding wheel 710x203x38 mm

1

SR 0159Grinding wheel 710x203x40 mm

1

SR 0160Spot light1




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
Wİth packing

5700 kg