Cam Follower Precautions on Use


  1. Do not disassemble the parts. This will result in loss of functionality.
  2. Take care not to drop or strike the Cam Follower. Doing so may cause injury or damage. Giving an impact to it could also cause damage to its function even if the product looks intact.
  3. When handling the product, wear protective gloves, safety shoes, etc., as necessary to ensure safety.

Precautions on Use

  1. Use a torque wrench or a similar tool to tighten the nut when installing the Cam Follower, using the appropriate fastening torque set forth in Installation on Table1 .
  2. Do not use the product at temperature of 80°C or higher. Exposure to higher temperatures may cause the resin/rubber parts to deform/be damaged.
  3. Prevent foreign material, such as cutting chips or coolant, from entering the product. Failure todo so may cause damage.
  4. If foreign material such as cutting chips adheres to the product, replenish the lubricant aftercleaning the product.
  5. Cam Followers are designed for use under a radial load. Do not use the product under a thrust load.
  6. Micro-oscillation can prevent the lubricant from coating the surface where balls meet the raceway, which can lead to fretting. To prevent this, use a grease with superior fretting resistance. THK also recommends periodically rotating the Cam Follower at least once to ensure that the raceway and balls are coated with lubricant.
  7. Insufficient rigidity or accuracy of mounting members causes the bearing load to concentrate on one point and the bearing performance will drop significantly. Accordingly, give sufficient consideration to the rigidity/accuracy of the housing and base and strength of the fixing bolts.


  1. The Cam Follower uses lithium soap-based grease No. 2 as standard grease. (Model CFN uses urea-based grease No. 2.)
    Replenish the lubricant whenever necessary. Do not combine different lubricants. Mixing lubricants can cause adverse interaction between disparate additives or other ingredients. (See Contamination Protection and Lubrication , Contamination Protection and Lubrication .)
  2. Prior to using the product, apply lubricant between the Cam Follower and the rolling contact surface as well.
  3. CF24, CFH24 or larger Cam Followers with hexagon sockets (symbol - A, excluding SUS models) are constructed with a plug fitted into the through hole that links the hexagon socket to the greasing hole (see dimensional drawing ø d1 , ø d2 Model CF-A ) to prevent grease leakages from the hexagon socket.
    During lubrication, take care to ensure that the plug is not forced out of the hexagon socket by excessive pressure.
  4. When using the product in locations exposed to constant vibrations or in special environments such as clean rooms, vacuum and low/high temperature, use the grease appropriate for the specification/environment.
  5. The consistency of grease changes according to the temperature. Take note that the slide resistance of the Cam Follower also changes as the consistency of grease changes.
  6. After lubrication, the slide resistance of the Cam Follower may increase due to the agitation resistance of grease. Be sure to perform a break-in to let the grease spread fully, before operating the machine.
  7. Even when the unit is equipped with seals, excess grease may spatter during initial use and immediately after lubrication. If necessary, wipe off any spattered grease.
  8. The properties of grease deteriorate and its lubrication performance drops over time, so grease must be checked and added properly according to the use frequency of the machine.
  9. The greasing interval varies depending on the use condition and service environment. Set the final lubrication interval/amount based on the actual machine.


When storing the Cam Follower, enclose it in a package designated by THK and store it in a room while avoiding high temperature, low temperature and high humidity.
After the product has been in storage for an extended period of time, lubricant inside may have deteriorated, so add new lubricant before use.


Dispose of the product properly as industrial waste.