Hi-Tek Blog

400 HP Industrial Fan

A 400 HP industrial fan is completely rebuilt in our shop. A new shaft was machined, the spherical roller bearings were replaced and the bearing clearances were set. The blower wheel buckets were flame-spray hard-coated to prevent further wear. The fan wheel was balanced and the housing was cleaned and painted. The fan has been in service for 4 years without any further attention.

400 HP Industrial Fan

11000 pound Fluid Friction Dynamometer Rotor

11000 pound fluid friction dynamometer rotor resting in our soft bearing high speed balancer. The rotor will be balanced at 1500 rpm. Soft bearing balancers are particularly suited for high precision balancing as they do not have structural resonance problems. This soft bearing machine can easily balance large rotors below ISO g1.0.

11000 pound Fluid Friction Dynamometer Rotor

Large Permanent Magnet Motor / Generator Rotor

Large Permanent Magnet Motor / Generator Rotor being loaded into our custom balancing machine. Under the blue coating there are hundreds of high power neodymium magnets. Permanent Magnet Rotors can create extreme inductive forces in the balancing machine support structure and confuse balancing readouts. HI-TEK has the knowledge how to prevent electromotive forces from damaging the machine and affecting its accuracy.

Large Permanent Magnet Motor / Generator Rotor

What is cylindrical grinding?

Cylindrical grindingIn our shop we have many types of machines to help us work on equipment of all sizes as well as individual machine parts. Our shop includes a cylindrical grinder, which is a machine that is used to help shape the outside of an object with a specific technique. The concept for cylindrical grinders was first introduced in the 1830s and improved upon for many decades after. To qualify as cylindrical grinding, there are four essential conditions that must be met Continue reading “What is cylindrical grinding?”