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Crankshaft Grındıng Machınes

STH 2200 S
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STH 2200 S

STH 2200 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 2200 S
Maximum distance between centers 

2250 mm

Maximum distance between self centering chucks

2000 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 wheel810 mm
Maximum grinding diameter with new wheel

200 mm

Maximum head offset

140 mm

Minimum grinding wheel thickness18 mm
Maximum grinding wheel thickness

60 mm

Diameter of the chucks

200 mm

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

600 mm

Maximum quill traverse on tailstock 

25 mm

Air pressure for heads displacement 8 bar
Wheelhead fast feed with servo motor 

200 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 power7.5 kw AC motor
Headstock motor power 1.5 kw AC motor
Wheelhead motor power1 kw servo motor
Table movement motor power 1.5 kw servo motor
Coolant unit motor power0.09 kw AC motor
 CODESTANDARD EQUIPMENTS QUANTITY
STD 26710 inch touch screen panel 1
STD 268PLC system for touch screen panel and servo motors                     

1

STD 269X axis servo motor 

1

STD 270Y axis servo motor 

1

STD 271X axis handwheel encoder

1

STD 272Y axis handwheel encoder 

1

STD 273Remote access device

1

STD 274Steady rest capacity diameter 30  ÷  160 mm thickness

2

STD 275Grinding wheel face and radius dresser with 1.5 carat diamond

1

STD 276Shaft centering device with dial gauge

1

STD 277Crank pins arm measuring device 

1

STD 278Self centering chuck diameter 200 mm 2
STD 279Head displacement checking device with dial gauge

1

STD 280Pair of flanges for grinding wheel

2

STD 281Static grinding wheel balancer with rotating plates

1 set

STD 282Grinding wheel diameter 810x203x22 mm

1 

STD 283Grinding wheel static balancing shaft 

1

STD 284Grinding wheel extractor and bushing threaded hub protection

1

STD 285Wheel head and table slide ways lubrication system 

1 Set

STD 286Pneumatic system

1 Set

STD 287Coolant system 

1 Set

STD 288Set of service tools

1 Set

STD 289Spot light

1

STD 290Balancing nuts and rubbers 

11

STD 291Operating manual

1

CODEOPTIONAL EQUIPMENTS QUANTITY
SR 0213Continuous journal sizing gauge (Ø25 - 110 mm)1
SR 0214Measuring fork range from (Ø100 - 200 mm)

1

SR 0215Self centering chuck diameter 200 mm

1

SR 0216Steady rest capacity diameter 30  ÷ 160 mm thickness

1

SR 0217Crankshaft counter balance in front weights (require 2 pcs)

1 Set

SR 0218Crankshaft counter balance back weights (require 2 pcs)

1 Set

SR 0219Portable super finisher with grinding belt 

1

SR 0220Grinding belt for superfinisher 20 mm thickness 

1

SR 0221Grinding belt for superfinisher 25 mm thickness 1
SR 0222Grinding belt for superfinisher 30 mm thickness 

1

SR 0223Tapered center with removing bushes (require 2 pcs) 

1 Set

SR 0224Sheared center with removing bush 

1

SR 0225Driving dog capacity diameter (20÷75 mm ) (require 2 pcs)

1 Set

SR 0226Driving dog capacity diameter (70÷140 mm ) (require 2 pcs)

1 Set

SR 0227Cathplates (require 2 pcs)

1 Set

SR 0228Pair of flanges for grinding wheel 

1

SR 0229Grinding wheel dresser diamond (1.5 carat)

1

SR 0230Grinding wheel diameter 810x203x18 mm 

1

SR 0231Grinding wheel diameter 810x203x20 mm

1

SR 0232Grinding wheel diameter 810x203x24 mm 1
SR 0233Grinding wheel diameter 810x203x26 mm 

1

SR 0234Grinding wheel diameter 810x203x28 mm 1
SR 0235Grinding wheel diameter 810x203x30 mm 

1

SR 0236Grinding wheel diameter 810x203x32mm 

1

SR 0237Grinding wheel diameter 810x203x34 mm 

1

SR 0238                 Grinding wheel diameter 810x203x36 mm 

1

SR 0239Grinding wheel diameter 810x203x38 mm 

1

SR 0240Grinding wheel diameter 810x203x28 mm 

1

SR 0241Grinding wheel diameter 810x203x28 mm 

1

SR 0242Spot light

1



DIMENSIONS

Length

4400 mm

Height

1650 mm

Width

2100 mm

DIMENSIONS WITH PACKING

Length

4550 mm

Height

1860 mm
Width

2250 mm

WEIGHT
Without packing

5300 kg

With packing

6300 kg