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Certified Lubrication Specialist Program Information

CLS Program Information Applicants taking the exam must attest to three years minimum experience in the field of lubrication. Further, in the event of a failed exam, a one-year waiting period will be required before retaking the examination.

What is a Lubrication Specialist? A Lubrication Specialist is an individual who might be designated a "Lubrication Engineer" by his/her employer. The job description for a Lubrication Specialist includes but is not limited to the following:

  • Evaluates and selects the proper lubricants to use. Recommends changes in lubricants.
  • Assists in purchasing lubricants by identifying which companies and products can be used interchangeably in a cost-effective manner.
  • Conducts lube surveys; specifies lubricants and procedures to those buying or installing new equipment.
  • Trains lubricators and assembles work lists for them to use. Establishes lube frequencies on all equipment. Designs or modifies all types of lubricant dispensing systems.
  • Develops and implements Quality Assurance and Used Lubricant analysis programs.
  • Oversees oily waste collection, reclamation or disposal. Converts as much usage as is economical to bulk.
  • Consolidates lubricant inventories to the fewest possible products.
  • Maintains records of lubricants by application throughout the plant.
  • Troubleshoots and problem solves supposed lubrication failures to identify root cause. Identifies corrective action to take and follows up.

Certification recognizes those individuals who possess current knowledge of lubrication fundamentals and theory. Certification is obtained by scoring at least 70% on a three-hour exam with 150 questions chosen at random from a stockpile of questions covering the following subjects:

  • Lubrication Fundamentals
  • Fluid Conditioning
  • Storage, Handling and Application of Lubricants
  • Monitoring and Reducing Consumption of Lubricants
  • Gears
  • Bearings
  • Seals
  • Fluid Power
  • Lubricant Manufacturing
  • Pneumatics
  • Transportation Lubricants
  • Metalworking
  • Solvents and Cleaners
  • Problem Solving
  • Lubricant Analysis
  • Lubrication Programs

All candidates will be notified regarding their exam results as soon as possible. Exams grades are stated as having passed the exam, scoring 70% or above, or not achieving the required 70% needed to pass. No other description will be given regarding the grade status.

The reference materials listed will help you review and understand the subject areas that are covered by the exam. Practical experience of the candidate is of equal importance. Knowing the reference material ONLY will not guarantee passing the exam.

Neither STLE, nor its CLS Committee, approve or endorse any independent education or training programs, or publications by individuals or organizations. Those listed here are in common usage. The list is not meant to be all-inclusive or exclusive, but rather to represent a reasonable cross-section of industry consensus.

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