TIANZHIJIAO engine valve groove grinding machine is used for grinding groove and tip chamfer of engine valve with the follow features:
1.φ380 CBN Grinding wheel Wheel speed: 80-140m/s 
2.With automatic loading & unloading mechanism 
3.Using Mechanical spindle. The speed can be adjusted
4.The Rail can be adjusted to meet different size engine valve.
5.Mitsubishi, Siemens controller can be choose 
6. There are two types machine can do this process. another one is double station groove grinding machine. It can process groove, tip chamfer and stem end face at the same time. more effieicncy and suitable for mass production
 

TIANZHIJIAO engine valve head & seat grinding machine is used for grinding head diameter, rough grinding seat face of engine valve with the follow features:
1.φ380 CBN Grinding wheel Wheel speed: 80-140m/s 
2.With automatic loading & unloading mechanism 
3.Using Taiwan Mechnical Spindle
4.The Rail can be adjusted to meet different size engine valve.
5.Mitsubishi, Siemens controller can be choose 
6.Double station valve head & seat grinding machine can process two pieces engine valve at the same time.

TIANZHIJIAO engine valve stem end grinding machine is used for grinding stem end face of engine valve with the follow features:
1.φ 300 CBN WHEEL  Wheel speed：Above 50m/s
2.With automatic loading & unloading mechanism 
3.Using mechanical spindle 
4.The Rail can be adjusted to meet different size engine valve
5.Mitsubishi, Siemens controller can be choose 

TIANZHIJIAO engine valve seat grinding machine is used for grinding seat face of engine valve with the follow features:
1.φ 600 Resin Wheel  Wheel speed: 60m/s
2.Automatic dressing and compensation 
3.Using Taiwan Mechnical Spindle 
4.With automatic loading & unloading mechanism 
5.The rail can be adjusted to meet the different size engine valve 
6.Mitsubishi, Siemens controller can be choose