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Grinding of rods for shock absorbers

Piston rods

General characteristics

Piston rod diameter 25,15 - 28 mm
Piston rod length 375 mm
Material SAE 1045
Hardness 54 HRC
Throughfeed rate 3 - 4 m/min
Type of dresser Multipoint (21)
Coolant 3%, synthetic or semi-synthetic

 

 

Grinding process

 RoughingFinish
Machine Cincinnati 3-500 Cincinnati 3-500
Grinding wheel AA70O8R3-P OL240/400MB1-P
Wheel dimensions 610 x 508 x 304,8 610 x 508 x 304,8
Regulating wheel A80RL A180RL
Wheel dimensions 355,6 x 508 x 152,4 / 2 355,6 x 508 x 152,4 / 2
Stock removal 0,25 – 0,35 mm 0,05 – 0,06 mm
Dressing frequency 2000 units 2000 units
     
Surface roughness (Rz) 3,5 – 5,0 μm 0,4 – 0,6 μm
Lifespan 250.000 units 250.000 units

 

 

Piston rods

General characteristics

Piston rod diameter 22 mm.
Piston rod length 380
Material SAE 1045
Hardness ≥ 50 HRC
Throughfeed rate 3,5 m/min
Type of dresser Multipoint (21)
Coolant 3%, synthetic or semi-synthetic

 

 

Grinding process

 RoughingFinish
Machine Estarta 327 MDA Estarta 327 MDA
Grinding wheel AA90/240MB-P AWA240/401/701-P
Wheel dimensions 650 x 500 x 304,8 650 x 500 x 304,8
Regulating wheel A80RL A180RL
Wheel dimensions 350 x 500 x 203,2 350 x 500 x 203,2
Stock removal 0,12 mm 0,02 mm
Dressing frequency 1500 units 1500 units
     
Surface roughness (Ra) <0,3 µm <0,06 µm
Lifespan 300.000 units 300.000 units