Superabrasive  Finishing of Hydraulic Valves & Systems

 

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ENGIS HONING SOLUTIONS FOR HYDRAULICS COMPONENTS

 

The quality of your hydraulic system plays a vital role in the performance and reliability of your products.  A critical factor to this performance is the fit between the spool and the valve bore.  Achieving optimal clearance between these two components results in improved performance, lower propensity for leaking, better hysteresis, fewer repairs and increased reliability.

Engis Single-Pass Bore Finishing and Multi-Stroke Honing technologies deliver superior-fitting bores.  We have over 40 years of focused experience in the development of Single-Pass technology, specifically for hydraulic applications achieving:

  • Better Quality Components
  • Better Mating of the Spool and Valve
  • Fewer Leaks
  • Better Performance

Our four Process Development labs work with you to achieve your production objectives in terms of fit, finishes and overall manufacturing cost and part quality. No other company has in-depth expertise in diamond and CBN characteristics, or the capacity to engineer complete superabrasive finishing systems as Engis. Let our drive and competitive spirit help you accomplish your goals.

Get additional information on:

  • Power Steering Housing
  • Timing Component
  • Valve Body
  • Piston Pump Cylinder Block
  • Bore Finishing Machines & Accessories
  • Lapping and Polishing Machines & Accessories
  • Product Development Assistance

LEARN MORE ABOUT
Engis Bore Finishing Systems

Bore FInishing CollageDownload Bore Finishing Flyer

 

See how Engis helped improve
productivity at Bobcat® by 300%


Single-Pass Reduces the Need for Match Grinding

To avoid potential leaking of the finished assembly and maximize performance of the hydraulic component, close mating of the spool and sleeve may require clearances of 1.27µm - 0.508µm.  This fit is often achieved by either "Match Grinding" the spool to the finished sleeve or by skilled craftsmen who hand lap the sleeve to suit the mating spool.  Engis Single-Pass Bore Finishing ensures proper fit between the spool and valve body WITHOUT Match Grinding.      Result = Save Time, Save Money.....

 

CASE STUDY - CONSTRUCTION MACHINERY MANUFACTURING

Challenge:

  • Inconsistent bore geometry
  • High down-time
  • High perishable tool cost

Engis Solution:

  • Improved quality: Cpk >1.67
  • Improved bore roundness to less than 0.2µm
  • Improved bore straightness
  • Reduced perishable tool cost to under $0.01 per part

Material: Cast Iron

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CASE STUDY - OFF-ROAD  

Challenge:

  • Inconsistent bore geometry
  • High down-time
  • High perishable tool cost

Engis Solution:

  • Improved quality: Cpk >1.67
  • Improved bore size control to better than 2µm
  • Production rate: 60 parts per hour
  • Reduced perishable tool cost to under $0.02 per part
  • Quick changeover for a large variety of part families
Material: Cast Iron
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DOWNLOADS:
Engis Hydraulics Brochure
Bore Finishing  Catalog

 

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