The Importance of Proper Drawbar Pull Force

Here at High Speed Technologies we know proper drawbar pull force is essential for maintaining rigid tool capture. And rigid tool capture is essential for precise high-speed machining and good surface finish quality.  Inadequate drawbar tension allows slight movement of the tool holder within the interface surface. This can damage the taper and add as [...]

2017-08-09T18:01:51+00:00August 9th, 2017|Drawbar|

How to Replace CNC Spindle Bearings Part 3

PART 3 of How to replace damaged bearings on a precision CNC spindle Installing Angular Contact Bearing and Preload This is the third in a five part series of tips and suggestions for replacing bearing in a precision CNC spindle.  This series is specifically for the DIY person with limited resources. It is not a comprehensive description [...]

2017-08-09T17:52:19+00:00June 20th, 2016|How to Replace CNC Spindle Bearings|

How to Replace CNC Spindle Bearing Part 2

PART 2 of How to replace damaged bearings on a precision CNC spindle Angular Contact Bearing Installation and Lubrication This is the Second in a five part series of tips and suggestions for replacing bearing in a precision CNC spindle.  This series is specifically for the DIY person with limited resources. It is not a comprehensive description [...]

2017-08-09T17:51:38+00:00June 13th, 2016|How to Replace CNC Spindle Bearings|

What is Preload?

Axial Preload for Angular Contact Bearings Preload is the load generated from the axial or radial interference within a bearing resulting in elastic deformation between rolling elements and the raceway. In other words, preload is the amount of force exerted against the rolling elements without the application of any external forces. Proper preload [...]

2017-08-09T17:57:21+00:00April 7th, 2016|Spindle Repair Questions|

What is ABEC 7?

HST only uses top name brand ABEC 7 bearings ABEC ratings have to do with the quality and precision of the bearing. It is an industry accepted standard developed by the Annular Bearing Engineering Committee (ABEC) of the American Bearing Manufacturers Association (ABMA). There are five (5) ABEC classifications 1, 3, 5, 7, [...]

2017-08-09T17:57:06+00:00April 6th, 2016|Spindle Repair Questions|

What is ISO 1940/1 G0.4.?

ISO 1940/1 is an international standard used for qualifying the balance of rotating rigid bodies. The standard also specifies the method for verifying residual imbalance. G0.4 is a particular balance grade within the overall standard. Compliance with this standard requires that the maximum residual imbalance falls within certain limits dependent on the overall mass of [...]

2017-08-09T17:56:52+00:00April 6th, 2016|Spindle Repair Questions|