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Crankshaft Grinding Machines

STH 1500 S
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STH 1500 S

STH 1500 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 1500 S
Maximum distance between centers

1600 mm

Maximum distance between self centering chucks

1550 mm

Maximum weight admitted on the centers

250 kg

Maximum weight admitted with steady rest

500 kg

Height of centers over table

275 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

550 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 power1,5 kw AC motor
Wheelhead motor power1 kw servo motor
Table movement motor power1 kw servo motor
Coolant unit motor power0,09 kw kw AC motor
CODESTANDARD EQUIPMENTSADET / QUANTITY
STD 13310 inch touch screen panel

1

STD 134PLC system for touch screen panel and servo motors

1

STD 135X axis servo motor

1

STD 136

Y axis servo motor

1

STD 137X axis handwheel encoder

1

STD 138Y axis handwheel encoder

1

STD 139Remote access device

1

STD 140Steady rest capacity diameter 30 ÷ 160 mm thickness

2

STD 141     Grinding wheel face and radius dresser with 1.5 carat diamond

1

STD 142Shaft centering device with dial gauge

1

STD 143Crank pins arm measuring device

1

STD 144Self centering chuck diameter 200 mm

2

STD 145Head displacement checking device with dial gauge

1 

STD 146Pair of flanges for grinding wheel

2

STD 147Static grinding wheel balancer with rotating plates

1 set

STD 148Grinding wheel diameter 710x203x22 mm

1 

STD 149Grinding wheel static balancing shaft

1

STD 150Grinding wheel extractor and bushing threaded hub protection

1

STD 151Wheel head and table slide ways lubrication system

1 set

STD 152Pneumatic  system

1 set

STD 153Coolant system

1 set

STD 154Set of service tools

1 set

STD 155Spot light 

1

STD 156Balancing nuts and rubbers

10

STD 157Operating manual

1

CODEOPTIONAL EQUIPMENTSADET / QUANTITY
SR 0051Continuous journal sizing gauge (Ø 25-110 mm)

 1

SR 0052Measuring fork range from (Ø 100-200 mm)

1

SR 0053Self centering chuck diameter 200 mm

1

SR 0054Steady rest capacity diameter 30 ÷ 160 mm thickness

1

SR 0055Crankshaft counter balance in front weights (require 2 pcs)

1

SR 0056Crankshaft counter balance back weights (require 2 pcs)

1

SR 0057Portable super finisher with grinding belt

1

SR 0058Grinding belt for superfinisher 20 mm thickness

1

SR 0059Grinding belt for superfinisher 25 mm thickness

1

SR 0060Grinding belt for superfinisher 30 mm thickness

1

SR 0061Tapered center with removing bushes (require 2 pcs)

1 set

SR 0062Sheared center with removing bush 

1

SR 0063Driving dog capacity diameter (Ø 20÷75 mm) (require 2 pcs)

1 set 

SR 0064Driving dog capacity diameter (Ø 70÷140 mm) (require 2 pcs)

1 set

SR 0065Cathplates (require 2 pcs)

1 set

SR 0066Pair of flanges for grinding wheel

1

SR 0067Grinding wheel dresser diamond (1.5 carat)

1

SR 0068Grinding wheel 710x203x18 mm

 1

SR 0069Grinding wheel 710x203x20 mm

1

SR 0070Grinding wheel 710x203x24 mm

1

SR 0071Grinding wheel 710x203x26 mm

1

SR 0072Grinding wheel 710x203x28 mm

1

SR 0073Grinding wheel 710x203x30 mm

1

SR 0074Grinding wheel 710x203x32 mm

1

SR 0075Grinding wheel 710x203x34 mm

1

SR 0076Grinding whee l710x203x36 mm

1

SR 0077Grinding whee l710x203x38 mm

1

SR 0078Grinding wheel 710x203x40 mm

1

SR 0079 Grinding wheel 710x203x50 mm

1

SR 0080Spot light

1


DIMENSIONS

Length

3600 mm

Hight

1600 mm

Width

1950 mm

DIMENSIONS WITH PACKING

Length

3750 mm

Hight

1900 mm

Width

2100 mm

WEIGHTS
Without packing

4300 kg

With packing

5100 kg