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Valve Groove & Tip Radius Grinding Machine Valve Groove & Tip Radius Grinding Machine

Valve groove & tip radius grinding machine is special purpose machine for engine valve. It is suitable for grinding groove and tip radius of inlet valve and exhaust valve. Using CBN wheel. Driven by servo control system. more accuracy.

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Product Description

Valve Groove & Tip Radius Grinding Machine is special purpose machine and used for grinding groove and tip radius of engine valve. The machine can be single production and also can be connection production. our equipment is continually upgraded with latest technologies in processing engine valve. 

We have two types this machine. Single station grinding machine and double station grinding machine. Double station grinding machine is with the same function with single station grinding machine. But it can process 2 PCS engine valve at the same time. Suitable for mass production. 


Forming grinding: Stem end chamfering and groove can be processed at the same time and guarantee the consistency of products. 



How does our machine work?

Main Features


Mechanical Spindle 

6000 rpm high-speed spindle. Adapts Germany FAG precision bearing. High accuracy and easy to maintenance and changeover

One year warranty

control system

Control system 

Adapts Mitsubishi PLC Control system, Mitsubishi motion system & Mitsubishi touch screen 

All parameters can be set and display on touch screen

Can store more sets program, you can choose according to different process technology

Head face positioning

Feeding way & Positioning way 

Precision sliding table composed of linear guide. Moving according to air cylinder;

Head face of engine valve positioning ,roller clamping assist.

loading system

Loading & unloading systemLoading & unloading system

The rails can meet different size valves and easy to adjust

The rest actions should carry out with grinding except for loading & unloading system 

Loading & unloading system has proper protection measures and don't affect the operator to change the fixture, wheel and other toolings

If the loading & unloading system is out of order, the machine will ring and stop the cycle.


Feed Slide

With X-axis and Y-axis, easy to operate through the touch screen. 

Technical Parameter

Before Processing 
Processing range Stem Diameter: 5-8 mm, Head diameter: 20-50 mm, Length: 80-150 mm 
Material 21-4N, 4Cr10Si2Mo, Imported: SUH:3,SUH:35, Hardness: 25-45 HRc
Stem Run out : 0.02 mm, Head run out : 0.05 mm
Grinding allowance0.5-3 mm
After processing 
Processing accuracy 
Groove accuracy Within ±0.015 mm, Sampling and using special inspection tool to measure 50 pieces
Position of groove Within ±0.02 mm,Sampling and using special inspection tool to measure 50 pieces
Roughness Within Ra 1.6
Cycle time 6s/piece ( according to valve size )
Air Pressure 

0.4-0.6 Mpa 

Water diacharge 
CBN Wheel 
Wheel Speed 
80-120 m/s 
Machine Size 
2000*2100*2000 mm
Machine Weight 



groove and tip

Valve Groove & Tip Radius Grinding Machine is a special-purpose machine for engine valves. 

It is suitable for grinding groove and tip radius of the inlet valve and exhaust valve.


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