SG 7.1 Seat and Guide Machine model suitable for small to mid range cylinder heads


The standard valve seat and guide machine


This is a medium sized seat and guide machine and a must have for any sized engine job shop. It is the most reliable and economical Cylinder Head Seat & Guide Machine on the market today.  This machine utilizes fixed carbide centering pilots. Rottler combines precision carbide centering pilots with a light weight air float workhead to give you perfect centering with the valve guide - every time. Great choice for shops machining small to medium cylinder heads for motor vehicles and trucks, motorcycles and power sports engines.  

Key Features

  • Robins patented spring free tooling
  • Unique cylinder head fixtures
  • Lapping and sharpening units
  • Chatter free finish
  • Carbide pilots and all angle inserts available

Technical Specifications

Cylinder head size

32" x 10"  x 6”

Spindle tilt

± 15 degrees

Spindle stroke

6.70” (175 mm)

Spindle speed

50 - 440 RPM



Surface finish

0.5 -1.25 µ mRa

Micro fine feed


Spring free adaptors


Constant varying speed