It is almost a certainty that we can repair your spindle to like new condition. HST has over 100,000 spindle repairs in our data base and over 30 years of experience. The chances are very good that we’ve repaired a spindle similar to yours. Our technicians understand the theory behind spindle design. They are fully […]
Perhaps. But there are many factors to consider when replacing the bearings on a machine tool spindle.
If you have a production critical machine down, HST can offer our emergency spindle repair service or what we call Quick Turnaround (QTA) service. Your spindle will move to the front of the line. Evaluation and quoting are completed within 24 hours. A normal comprehensive repair is usually 2-3 business days ARO. If the spindle […]
The short response to that question is “probably not”.
Tom M. a maintenance supervisor at GSO &M sent us the above question. Some of our original response to the question above was incorrect. We recently received an email from a reader who pointed out our error. It is our desire to publish correct and accurate information. So please accept our apology and note the […]
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 […]
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, […]
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 […]
Trim balance is the final balance procedure done to a spindle after assembly and during full speed testing. This is procedure is necessary for two reasons. One, often additional components are attached to the shaft after assembly into the housing. Their imbalance will not be compensated for by the adjustments made on the Balancing Machine. […]
Imbalance is caused by the displacement of the center of mass from the rotational axis which is a function of eccentricity in the distribution of the rotating mass. It is measured in units of mass and distance, e.g., gram-millimeters or gmm. Imbalance is considered in single plane modes and dual plane modes. Balancing is the […]
