NSK Case Study
Application
Dust Extraction Fan
Cost Savings: $95,323
An ore preparation plant was experiencing high temperatures within a dust extraction fan. The bearing temperature was cooled down at considerable cost by using compressed air. NSK Engineering conducted an Application Review including a temperature survey revealing major issues with the sealing. Operating at high speed caused the seal lip to burn off and over-lubrication contributed to the high running temperature. NSK recommended using NSKHPS Spherical Roller Bearings with SNN Pillow Blocks and labyrinth seals, along with recommendations for correct lubrication intervals and amounts. A trial was conducted resulting in a considerable temperature reduction and significant cost savings by removal of the compressed air.
PDF DownloadKey Facts
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Dust extraction fan application |
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High bearing temperatures in operation |
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Extraordinary measures – compressed air – required to countermeasure temperature rise |
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Incorrect lubrication amounts and frequencies |
Dust Extraction Fan
Value Proposals
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NSK engineering conducted an Application Review including a Temperature Survey and a Bearing Condition Report |
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NSK engineering recommended NSKHPS Spherical Roller Bearings in combination with SNN Pillow Blocks and labyrinth seals |
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Modifications to lubrication amounts and intervals |
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Trial conducted, with NSK Engineering overseeing the installation and implementation |
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The customer benefited from increased productivity, reduced maintenance costs and the elimination of compressed air, resulting in a significant cost savings |
Product Features
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Manufactured from grade 200 cast iron |
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High precision bore for optimum bearing seating |
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Split block design allows for easy mounting and dismounting of pre-assembled shafts |
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Available for shaft diameters from 20 to 140 mm and/or 3/4” to 5 1/2” |
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Threaded lubrication hole(s) on the cap and 1 drainage outlet on the base |
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Dimples on the housing surface facilitate additional holes for sensors, lubrication, mounting bolts or locating pins |
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Large oil bath to maximize oil change intervals |
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Good heat transfer |
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Contact and non-contact seal options |
SNN Pillow Block and
NSKHPS Spherical Roller Bearing
NSKHPS Spherical Roller Bearing
Cost-Savings Breakdown
| Before | Cost | NSK Solution | Cost | |||
|---|---|---|---|---|---|---|
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Compressed air to cool bearings | $95,323 | Eliminate need for compressed air | $0 | ||
| Total Costs | $95,323 | Total Costs | $0 | |||
| Before | Cost | |
|---|---|---|
|
Compressed air to cool bearings | $95,323 |
| Total Costs | $95,323 | |
| NSK Solution | Cost | |
|---|---|---|
|
Eliminate need for compressed air |
$0 |
| Total Costs | $0 | |
Your Partner for Machine Optimization
Our AIP Added Value Program is based around a simple proposition: ‘improvement pays’. By working with you throughout the AIP Value Cycle, we will help you achieve improvements in machine reliability, productivity and performance, all of which carry a tangible and measurable cost benefit – and we have the tools to prove it! That’s what we mean by improvement pays.
