NSK angular contact ball bearing axial 35TAC72CSUHPN7C
Professional installation of ball screw bearings
Why is the installation of ball screw bearings so important?
Ball screw bearings play a central role in the functionality of CNC machines. Incorrect installation can not only impair efficiency but also lead to costly damage.
Step-by-step installation instructions
1. Cleaning the bearings
Before installation, the bearings must be thoroughly cleaned. Use brake cleaner or thinner to completely remove the manufacturer's anti-rust oil. This oil can interfere with the adhesion of the grease, resulting in reduced performance.
Note: Ensure no residue remains after cleaning. Use compressed air to blow the bearings dry, but do not rotate them with the air to avoid damage.
2. Lubrication of the bearings
Over-lubrication of ball screw bearings is just as damaging as insufficient lubrication. Never completely fill the bearings with grease, as this:
- Generates excessive heat.
- The service life of grease and bearings is significantly shortened.
3. Consultation with the machine manufacturer
If you are unsure how to install the bearings correctly, always refer to the instructions provided by your machine manufacturer or CNC dealer. These will provide detailed information tailored to your machine.
Common installation mistakes and how to avoid them
Inadequate cleaning
Failure to remove the rust protection oil prevents optimal grease adhesion.
Improper use of compressed air
Rotating the bearings with compressed air causes mechanical damage and reduces their service life.
Incorrect amount of grease
Too much or too little lubricant will impair bearing performance. Follow the manufacturer's recommendations.
Tips for extending the lifespan
Use of suitable lubricants
Use high-quality grease specially developed for ball screw bearings.
Protection against contamination
Prevent the bearings from coming into contact with dust, moisture and other foreign substances.
Regular maintenance
Check bearings regularly to detect wear or damage early.
Conclusion
Precise installation of ball screw bearings is critical to the performance of your machines. Careful cleaning, proper lubrication, and following the manufacturer's specifications can prevent damage and extend bearing life.
Do you have questions?
Contact a CNC expert or your machine manufacturer for support and further instructions!
What does the suffix mean
The expert's advice
RS, 2RS, 2RSH, 2RS1, RSR, 2RSR, E, EE, LLU, LLB, DU, DDU
These suffixes indicate whether the bearing is equipped with one or two rubber seals. For 123 ball bearings, the number 2 indicates that the bearing is sealed on both sides.
C3, C4
Indicates increased internal clearance. Often referred to as high-speed capability, this indicates that the bearing is designed for high speeds and moderate temperatures. Caution: A bearing with increased internal clearance will not perform optimally at low speeds. We recommend consulting the technical data sheet for the bearing in question to verify the speed limit.
ZZ, 2Z, ZR, Z
These suffixes indicate whether the bearing is equipped with one or two metal baffles for dust protection. For 123 ball bearings, we mark whether the bearing is sealed on both sides with ZZ seals.
TN9, TVH, TVP, G15
These suffixes indicate that the cage that keeps the balls spaced apart in the bearing is made of polymer material, usually glass fiber reinforced polyamide.
ABEC
The ABEC standard is used to classify bearings based on their machining tolerances. However, it is often criticized for not taking into account certain critical technologies that ensure a bearing's functionality, efficiency, and service life. Therefore, 123Kugellager does not use this standard.
BHT / VT
This suffix indicates that the bearing is designed for very high operating temperatures. The exact temperature is usually indicated after this suffix. Caution: These bearings are not suitable for all applications and require high temperatures to ensure optimal service life.
