LM Stroke Precautions on Use

Handling

1. Do not disassemble the parts. This will result in loss of functionality.
2. Take care not to drop or strike the LM Stroke. 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. With the model ST LM Stroke, intrusion of foreign matter can cause abnormal wear and reduce service life. If there is a risk of foreign material intruding, use a seal or another protective option suited to the usage conditions and surrounding environment. A highly abrasion-resistant synthetic rubber seal (model ST...UU) and dust-proof felt seal with low seal resistance (model ST... DD) are available for the model ST.
2. If foreign material such as cutting chips adheres to the product, replenish the lubricant after cleaning the product.
3. 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.
4. If the product is used in an environment where cutting chips, coolant, corrosive solvents, water, etc., may enter the product, use bellows, covers, etc., to prevent them from entering the product.
5. Micro-strokes tend to obstruct oil film to form on the raceway in contact with the rolling element, and may lead to fretting corrosion. Take consideration using grease offering excellent fretting prevention. It is also recommended that a stroke movement corresponding to the length of the ball cage be made on a regular basis to make sure oil film is formed between the raceway and rolling element.
6. Do not use undue force when fitting parts (pin, key, etc.) to the product. This may generate pressure marks on the raceway, leading to loss of functionality.
7. Insert the shaft straight through the opening. Inserting the shaft at an angle can introduce foreign matter, damage internal components, or cause balls to fall out.
8. Using this product with any balls removed may result in premature damage.
9. Please contact THK if any balls fall out; do not use the product if any balls are missing.
10. If an attached component is insufficiently rigid or mounted incorrectly, the bearing load will be concentrated at one location and performance will decline significantly. Make sure the housing and base are sufficiently rigid, the anchoring bolts are strong enough, and the component is mounted correctly.

Lubrication

1. Thoroughly wipe off anti-rust oil and feed lubricant before using the product.
2. Do not mix different lubricants. Mixing greases using the same type of thickening agent may still cause adverse interaction between the two greases if they use different additives, etc.
3. 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.
4. When lubricating the product, apply grease directly on the raceway and stroke the product several times to let the grease spread inside.
5. The consistency of grease changes according to the temperature. Take note that the slide resistance of the LM Stroke also changes as the consistency of grease changes.
6. After lubrication, the slide resistance of the LM Stroke 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. Excess grease may scatter immediately after lubrication, so wipe off scattered grease as necessary.
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.
10. The model ST LM Stroke can be lubricated with either oil or grease. Select the appropriate option in accordance with the DN value. THK recommends lithium grease no. 2.

Storage

When storing the LM Stroke, enclose it in a package designated by THK and store it in a room while avoiding high temperature, low temperature and high humidity.

Disposal

Dispose of the product properly as industrial waste.