Jessica is applying precision metered ultra-filtered grease in our special flow bench mini-clean room. Today there are many excellent lubricants for the full spectrum of spindle applications. The OEM should always be the first source for lubrication requirements. However, if that information is not available HST makes the following recommendations. Grease: Most spindles […]

In our data base of over 100,000 repairs we have seen a broad spectrum of failures. Some common failure causes include: Contamination Mishandling Incorrect Preload Overloaded Lubrication Imbalance Drawbar Mechanism Failures Statistical Bearing Failure For some tips on how to avoid premature failure visit our Blog under “ Spindle Tips”. Contamination Minute particulate resulted […]

A kiss grind, also sometimes referred to as a “breeze grind” is a light surface grind that will remove minor surface damage. It is typically used on tool interface surfaces such as CAT or BT tapers. Because it is a grinding process it can only remove high spots. Often taper surfaces have high spots as […]

GPG is the abbreviation for Grind – Plate – Grind. This is our process for surface restoration and it is used to restore out of tolerance critical surfaces like bearing journals to original specification.  This process is also used for restoring tool interface surfaces like CAT or HSK tapers. Our experience shows that about 35% […]