Valve Seats Boring BV120


Heavy – duty Valve Seat Boring Machine Model: BV120 , this machine makes use of special steel and 

spheroidal graphite cast iron , its body are special heat treated , the rigidity , stability much improved 

along with the working life. It is equipped with one heavy duty spindle , rated power is 2.5 kW , outside 

diameter is Φ 90 mm , maximum torque is 42 N.M. . Moreover , the triple air-float patented work head , 

and the air floating table , and other…… Thanks to that , it is really easy to operate , although this is

 a heavy machine. Designed for the valve seats from the smallest to the bigger diameter. This machine 

can repair any existing engine, from the micro-engine up to the big stationary engine, machining capacity 

from 18mm to 120 mm. To reach the requirements of high precision machining for valve guides with a

 small diameter of 4mm.

Main Specifications 



Type of Drive System

Air / Electric

Max. Length of Cylinder Head


Max. Width of Cylinder Head

500 mm

Max. Height of Cylinder Head

450 mm

Max. Boring Dia.

18 – 120 mm

Work Head Longitudinal Floating Travel

990 mm

( with optional parking area : 450 mm )

1440 mm

Work Head Cross Floating Travel

40 mm

Sphere – Cylinder Travel

9 mm

Floating inclination angle of Spindle


Table Travel

160 mm

Vertical Travel of Spindle

200 mm

Power of Spindle

2.5 kW Spindle Motor

Max. Torque of Spindle Motor

42 Nm

Spindle Speed

100 – 800 rpm stepless

Power of Tools Grinder

0.27 kW

Tools Grinder Rotation Speed

2800 rpm

Clamper Rotary Angle

+ 42°/ -15°

Required Rated Air Pressure

6 Bar / 85 PSI

Required Max. Air Flow

400 L / Min

Required Continuous Air Flow

60 L / Min

Length of Machine

1685 mm

Width of Machine

1050 mm

Max. Height of Machine

2180 mm

Min. Height of Machine

1980 mm

Roughness of Finishing

Ra 0.6

Package Size ( L×D×H )

1860×1150×2200 mm


1700 Kg


2000 Kg

SJMC Machine Tools CO.,LTD               联图二维码.png联图二维码 (3).jpg      

ADD:16/F,Jincheng House,NO.511 Tianmu West Road,Shanghai China 

Tel:  +86 21 53550166Fax: +86 21 63805455

Cell:+86 1391672837 (24h)/Mr.Leo

Mail:   /                                                         

WhatsApp: +86 13916728373

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