Sumitomo General Catalog 2025-2026

For Cylinder Head Cutting PCD Rotating Tools

Automotive Components

Tool Lineup for Cylinder Head Machining

 PCD Reamer for Solenoid Hole Machining Multi-blade/multi-stage high-precision reamers ensure coaxial accuracy. hining

 PCD Reamer for Spark Plug Hole Machining High-precision coaxial machining is realised by increasing the number of teeth at the machining start section (second stage).

AL

 PCD Cutter for Cam Grooving Staggered blades are used to lower cutting resistance and achieve high-precision grooving with less chatter.

 PCD Reamer (1-ute) for Valve Lifter Hole Machining

Guide pad design with attention to rotation balance realises high-precision hole nishing.

 PCD Reamer for HLA Hole Machining Special 2 blade design can handle large lateral holes, preventing cutting edge drops.

 PCD Endmill for Spring Shim Machining Cutting edges has a chipbreaker function, preventing chips from entering the water jacket. ning

Improves chip evacuation and achieves a high cylindricity using a design ideal for machining of thin-wall parts and blind holes.  Finishing

D Cutting Conditions Machine

Horizontal Machining Centre

 PCD Ball Endmill

Coolant

Emulsion-type water-soluble oil

for Cam Half-Rounding The use of PCD increases machining accuracy and reduces machining load in later processes.

Spindle Speed (min -1 )

5,000

Feed Rate (mm/min)

1,700

0.34

Feed Rate (mm/rev)

0.5

Allowance (mm/diameter)

*HLA: Abbreviation for hydraulic lash adjuster

 PCD Reamer for Cam Sensor Hole Machining The cutting force is reduced, improving the cutting speed and accuracy. r

 PCD Reamer for Parent Metal Hole Machining The use of a high-rigidity body enables high-coaxial nishing of guide holes and shim holes before press-tting.

 PCD Endmill for Valve Throat Machining Simultaneous roughing of the parent metal insert section and throat machining.

Achieves a good balance between coaxiality and cylindricity with a high rigidity shank and high cutting edge precision.  Parent Hole Finishing

D Cutting Conditions Machine

Horizontal Machining Centre

Coolant

Emulsion-type water-soluble oil

 PCD Endmill for Valve Throat Machining Achieves longer tool life in throat machining through high-precision runout and contour accuracy.

Spindle Speed (min -1 )

6,000

Feed Rate (mm/min)

2,880

0.48

Feed Rate (mm/rev)

0.6

Allowance (mm/diameter)

AL3

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