Professional engine valve manufacturing machines supplier!


+0086-512-66294696+86 181 3697 7277

CNC Valve Head & Seat Grinding Machine CNC Valve Head & Seat Grinding Machine

Valve Head & Seat Grinder is special purpose machine for engine valve. It is suitable for grinding head OD, chamfer and rough grinding seat face. We have two types: Single station and double station grinding machine. Double station grinding machine can process two pcs engine valve at the same time, increase the efficiency. suitable for mass production and connection production.

Warranty time :
  • One Year
Wheel :
  • CBN Wheel
Spindle :
  • Mechnical spindle
Delivery time :
  • 90 working days
Share this:
  • Model: MUG-B
  • Brand: Tianzhijiao
  • Code: 8460909000
  • Product Description
  • FAQ


Valve Head & Seat Grinding Machine

Product Description

Valve Head & Seat Grinding Machine is special purpose machine for engine valve. It is used for grinding OD, rough grinding seat face of engine valve. Ranging from stem diameter:5 mm to 8 mm, Head diameter: 20 mm to 50 mm, Overall length: 80 mm to 150 mm. The machine can be single production and also can be connection production. Our equipment are continually ungrade with latest technologies in processing engine valve. 

We have two types this machines. one type is single station valve grinding machine, another types is double station valve grinding machine. It can process 2 PCS engine valve at the same time. Increase the quantity and efficiency. Suitable for mass production.

Technical Parameter 

Before Processing 
Processing range  Head diameter: 20-50 mm, Stem diameter: 5-8 mm, Length: 80-150 mm 
Material  21-4N, 4Cr10Si2Mo, Imported SUH:3, SUH:35, etc. Hardness: 35-45 HRc
Stem run out: 0.01 mm, Head run out : 0.1 mm
Seat Angle  45-60 degree
Grinding allowance  Within 4 mm 
After Processing 
Processing accuracy 
Head run out
Within ±0.03 mm, Sampling and using special inspection tool to measure 50 pieces
Seat run out  Within ±0.05 mm, Sampling and using special inspection tool to measure 50 pieces
Roughness  Within Ra1.6
Cycle time  Within 7s/piece ( according to valve size )
Wheel size 
CBN Wheel  380*160*20 mm
Wheel speed  m/s 80-140
Air pressure  0.4-0.6 Mpa 
Water discharge 
10 KW 
Current  380V/50Hz 
Machine size 
2000x2100x2000 mm
Machine Weight 
2000 kg 

Main Features

  • HT250 machine bed and feeding slider, tempering heat treatment to eliminate stress and it is not easy to deformation.

  • Feeding of parts is controlled by double servo motor to achieve the action control of the amount of cutting and automatic cycle.

  • Adjustment the amount of grinding is controlled by touch screen.

  • Speed of CBN Wheel: 80-140 m/s 

  • Feed guide rail, slider and ball screw are lubricated automatically by electrical filling pupm.

  • All sealed sheet metal except for loading & unloading parts (We can install safety door lock system, it is up to the customer needs).

  • With automatic loading & Unloading mechanism.

  • The rail can meet different size valve and easy to adjust


Valve Head & Seat Grinding Machine is special purpose machine for engine valve. it is used to process engine valves (inlet valves and exhasut valves) in Lawn machine, cars, motorcycles, trucks, boat and other engine valves.


How does our machine work?


Q: How to pay?

A: 40% T/T in advance, the balance paid before shipment 

Q: How long is the delivery time?

A: 90 working days after we receive the payment 

Q: What is the capacity of engine valve production line?

A: The capacity of this line is 3500~4000 pieces/8 hour. 7000~8000 pieces/2 shaft/day. The real capacity is up to the size of engine valve and the skill of operator.

Q: How Many people are needed from raw material to ready valve?

A: We can provide completely engine valve production line from raw material to ready valve. We can alsp provide technical support for processing engine valve. it will need 15~20 people for this line. Our machining line just need 2~3 people. (it is up to the skill of operator).

Q: What can we do for customer?

A: Firstly, we are professional manufacturer for cnc engine valve grinding machine. We have more than ten years experience in processing engine valve grinding machine. Our technology adapt Japan and Taiwan technology and through many years innovation, the technology has mature.

Now, we have successfully developed fully automatic engine valve production line. And also put into use. Get good praise from our customer.
1. We can set up complete automatic engine valve production line according to customers needs.
2. We can make upgrade proposal according to customer real conditions.

3. Provide technical training for how to operate and install. 
4. All machines have one year warranty. Within warranty period, Any questions except for man-made damage we offer the cost.
5. We can set up operation standard, technical guidence.


Contact Us