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When It Comes To The Precision Bore Machining Of Small Engines, Sunnen Gives You More.
More machines. More tooling. More abrasives, automation and gaging. More honing oils. More precision. More choices. And it’s all backed by Sunnen’s worldwide team of domestic sales representatives and international subsidiaries and distributors.

For low- to mid- to high-volume production runs, we've got the "right" high precision bore machining system for your exact requirements. For all the facts, please use the convenient "Contact Us" form at left. A Sunnen representative will contact you to schedule a FREE consultation/needs analysis

Custom, High Precision, High Production Bore Machining Systems
Sunnen's precision honing systems are designed and engineered to be easily customized and/or automated to meet your specialized high-production, small engine bore machining requirements.

From concept to production, we'll work with you every step of the way to make sure all your needs and exact specifications are met. It's our commitment to Total Service and Quality Assurance.


SV-310 Vertical Honing Machines
The SV-310 delivers mid- to high-volume manufacturers the lowest cost per honed part. Both systems can be automated or customized to meet your exact requirements.

Bore Diameter Ranges (I.D.):
• SV-310: 19 mm – 200 mm (.75 inch – 8 inch)
• SV-500: 19 mm – 300 mm (.75 inch – 12 inch)

SV-3 Vertical Honing Machine
The SV-3 is perfect for the bore sizing and finishing of larger, heavier and odd-shaped parts. Automatic size control ensures extreme precision and consistent bore sizing results. And, the system's vertical design saves valuable floor space.

Bore Diameter Range (I.D.):
12,7 mm – 203.2 mm (.500 inch – 8 inch)

SV-1010 Vertical Honing Machine
The SV-1010 delivers mid- to high-production manufacturers the lowest cost per honed part, while delivering precision bore tolerances. The SV-1010 can be automated or customized to your exact bore size and finish specifications.

Bore Diameter Range (I.D.):
3 mm - 65 mm (.120 - 2.56 inch)

KGM-5000NT KROSSGRINDING® System
No other mid- to high-production bore sizing and finishing machine on the market today delivers the precision roundness, straightness, bore size and finish as the KGM-5000NT. The system is capable of holding the industry's tightest production-environment tolerances.

Bore Diameter Range (I.D.):
MMT Tooling: 5,46 mm - 32 mm (.215 inch - 1.260 inch)
KROSSGRINDING® Tooling: 3,81 mm - 32 mm (.150 inch - 1.260 inch)

ML-5000 Automatic Honing Machine
The Sunnen ML-5000 horizontal power stroked high precision bore sizing and finishing machine is up to six times faster than I.D. grinding and can be set up in half the time. It can be automated for mid- to high-production applications.

Bore Diameter Range (I.D.):
Manual Stroking: 1,5 mm - 165,1 mm (.060 inch - 6.500 inch)
Power Stroking: 1,5 mm - 101,6 mm (.060 inch - 4.000 inch)