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Crankshaft Grinding Machines

STH 1500
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STH 1500

STH 1500  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 1500
Maximum distance between centers

1600 mm

Maximum distance between self centering chucks1550 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 AC motor
CODESTANDARD EQUIPMENTSADET / QUANTITY
STD 101PLC system for servo motor

1

STD 102X axis servo motor

1

STD 103Y axis servo motor

1

STD 104Y axis handwheel encoder

1

STD 105X axis handwheel encoder

1

STD 106

Steady rest capacity diameter 30÷160 mm thickness

2

STD 107Grinding wheel face and radius dresser with 1.5 carat diamond

1

STD 108Shaft centering device with dial gauge

1

STD 109Crank pins arm measuring device

1

STD 110Self centering chuck diameter 200 mm

2

STD 111Head displacement checking device with dial gauge

1

STD 112Pair of flanges for grinding wheel

2

STD 113Static grinding wheel balancer with rotating plates

1 Set 

STD 114Grinding wheel diameter 710x203x22 mm

1

STD 115Grinding wheel static balancing shaft

1 

STD 116Grinding wheel extractor and bushing threaded hub protection

1 

STD 117Wheel head and table slide ways lubrication system

1 Set 

STD 118Pneumatic system

1 Set

STD 119Coolant system

1 Set

STD 120Set of service tools

1 Set

STD 121Spot light

1 

STD 122Balancing nuts and rubbers

10

STD 123Operating manual

1 



 





                                                                                                                          
CODEOPTIONAL EQUIPMENTSADET / QUANTITY
SR 0010Continuous journal sizing gauge (Ø 25-110 mm)

1

SR 0011Measuring fork range from (Ø100-200 mm)

1

SR 0012X-Y axis digital readout by linear encoders (Turkish Product)

1

SR 0013Self centering chuck diameter 200 mm

1

SR 0014Steady rest capacity diameter 30÷160 mm thickness

1 

SR 0015Crankshaft counter balance in front weights (require 2 pcs)

1 Set

SR 0016Crankshaft counter balance back weights (require 2 pcs)

1 Set

SR 0017Portable super finisher with grinding belt

1

SR 0018Grinding belt for superfinisher 20 mm thickness

1

SR 0019Grinding belt for superfinisher 25 mm thickness

1

SR 0020Grinding belt for superfinisher 30 mm thickness

1

SR 0021Tapered center with removing bushes (require 2 pcs)

1 Set

SR 0022Sheared center with removing bush

1 

SR 0023Driving dog capacity diameter (Ø20 ÷ 75mm)  (require 2 pcs )

1 Set

SR 0024Driving dog capacity diameter (Ø70 ÷ 140mm)  (require 2 pcs )

1 Set

SR 0025Cathplates (require 2 pcs)

1 Set

SR 0026Pair of flanges for grinding wheel

1

SR 0027Grinding wheel dresser diamond (1.5 carat)

1

SR 0028Grinding wheel diameter 710x203x18 mm

1

SR 0029 Grinding wheel diameter 710x203x20 mm

1

SR 0030Grinding wheel diameter 710x203x24mm

1

SR 0031Grinding wheel diameter 710x203x26 mm

1

SR 0032Grinding wheel diameter 710x203x28 mm

1

SR 0033 Grinding wheel diameter 710x203x30 mm

1

SR 0034Grinding wheel diameter 710x203x32 mm

1

SR 0035Grinding wheel diameter 710x203x34 mm

1

SR 0036Grinding wheel diameter 710x203x36 mm

1

SR 0037Grinding wheel diameter 710x203x38 mm

1

SR 0038

Grinding wheel diameter 710x203x40 mm1
SR 0039Grinding wheel diameter 710x203x50 mm

1

SR 0040Spot light 1
DIMENSIONS

Length

3600 mm

Hight

1600 mm

Width

1950 mm

DIMENSIONS WITH PACKING

Length

3750 mm

Hight

1900 mm
Wİdth

2100 mm

WEIGHTS
Without packing4300 kg
With packing

5100 kg