Northland Tool Blog
Spindle Vibration Monitoring & Analysis

Spindle Vibration Monitoring & Analysis

What Is Vibration Analysis? What Is Spindle Vibration Analysis? Causes of Spindle Vibration Why Is Spindle Vibration Analysis Important? Spindle Vibration Analysis Tools & Software Can I Do A Spindle Vibration Analysis Myself?   What Is Vibration Analysis? In manufacturing, vibration analysis is a process for measuring the vibration levels and frequencies of machinery and its components while in operation. The analysis is performed both during machine repair troubleshooting and as a part of preventive maintenance. Vibration analysis determines whether there are defect frequencies that need to be addressed.

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The Complete Guide to Spindle Runout: How to Test, Measure & Reduce

The Complete Guide to Spindle Runout: How to Test, Measure & Reduce

Written by: Christian Stark

What Is Spindle Runout? Types of Spindle Runout The Effects of Spindle Runout How To Measure Spindle Runout Correct Your Spindle Runout Today What Is Spindle Runout? In machining, runout refers to inaccuracies in a tool or piece of equipment that cause it to spin off its ideal axis.

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Delaying Spindle Service Causes More Damage, Costly Repairs

Delaying Spindle Service Causes More Damage, Costly Repairs

Written by: Peter Ivas

Running this spindle too long caused deformed ball bearings and damage to the outer race Damage to the outer race is consistent with prolonged operation after spindle exhibited initial signs of needing to be rebuilt   Every spindle rebuilt by Northland Tool is backed by a 1-year warranty on parts and workmanship Over 2 years in the making A customer reached out to us over 2 years ago with a complaint that their spindle was starting to get noisy. We provided an estimated cost of $5,000 to rebuild.

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GPG: Grind-Plate-Grind Process Explained

GPG: Grind-Plate-Grind Process Explained

Written by: Peter Ivas

When a cylindrical surface, such as the OD of a shaft or the ID of a tooling taper, becomes worn or damaged, we use a process referred to as grind-plate-grind (GPG) to restore dimensions to original OEM specification. First, we pre-grind, also referred to as “green grind,”  to remove a thin layer of material and smooth any damage. Next, the part undergoes an electroplating process to apply a layer of hard chrome to the desired area. This builds up a durable surface that is slightly oversized than the final desired dimension.

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Precision Machining in a World of Microns

Precision Machining in a World of Microns

Written by: Peter Ivas

How small is a micron, and why do we work in such a small scale? Precision is defined as the quality, condition, or fact of being exact and accurate. But how close is “exact”, exactly? It all depends on the application. There is no clearly defined tolerance range for a workpiece to be considered “high precision,” but in our line of work repairing spindles, we frequently encounter specs calling for a tolerance of +/- 2 microns. A micron (μm), or micrometer, is one millionth of a meter, or 1/25,400th of an inch. That’s roughly 0.00004″.

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Southtec 2017

Southtec 2017

Written by: Northland Editor

We are having a great show at Southtec 2017. Not only have we been able to introduce our unique spindle repair service, we have Kent Queensbury from Lion Precision demonstrating The Spindle Check system. If you have not seen this amazing technology yet contact us and we will be happy to give you a demonstration. This is a must have tool in your arsenal.

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Hardinge T42 Four Pack

Hardinge T42 Four Pack

Written by: Northland Editor

Our customer wanted to requalify his Hardinge T42 spindles to make sure he continued to hold the very tight tolerances required for his customers products. As this took all four machines down at once we rush repaired them with grinding work and hand carried the spindles back within days of receiving them.

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Ball Cage Manufacture

Ball Cage Manufacture

Written by: Northland Editor

Many spindle rebuilders do not have the equipment or skill to manufacture the ball cages that are essential for proper preload of the bearings. The practice of reusing ball cages is usually done because they have no other option. They have not invested in the machinery and skill sets needed to manufacture parts correctly. One of the more common failures we see from other rebuilders is a ball cage that no longer functions freely. This causes excessive preload to the bearing set as the spindle experiences thermal growth. That eventually causes premature bearing failure. Don’t get short changed on your next repair.

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Spindle Actuator Repair

Spindle Actuator Repair

Written by: Northland Editor

This is a drawbar actuator that the walls of the ID had been scored and allowed hydraulic fluid to seep around the seals and contaminate the spindle bearings causing premature bearing failure. We were able to rework the ID in our grinding department saving our customer several thousands of dollars.

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Manufacturing Spindle Parts

Manufacturing Spindle Parts

Written by: Northland Editor

Since you can’t go to the local parts store and buy a front spindle housing and the lead times from the OEM can be measured in months not days, if they will even sell you the part. We manufacture replacement parts here to keep you up and running. Northland Tool manufactured this part, with micron tolerances, in 4 days and had our customer up and running in less than 7 days.

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