Closures are critical components that protect the bearing interior from contaminant ingress. myonic offers a variety of sealing solutions, from basic shields to advanced Filmoseal technology, to meet different application requirements.
Closures in the form of shields or seals are used to:
- Prevent contamination during handling or assembly of the ball bearings
- Protect the inside of the ball bearing during operation
- Retain lubricant and reduce its loss to a minimum
myonic Standard Closures - Type "V, Z, X"
myonic manufactures high-precision closures stamped from stainless steel material. These closures do not contact the rotating bearing part and provide basic protection against external contamination.
This ensures that neither the frictional torque, noise development nor the operating temperature of the ball bearing increases.
This type of closure does not guarantee complete protection against external contamination from dust or the ingress of liquids.
Our standard closures are identified by one of the following letters: "V", "Z", "X". Depending on the requirements of the application, we can supply either permanently mounted or removable covers.
Standard Closure Type Comparison
| Code | Name | Contact Type | Protection Level | Friction Impact | Application |
|---|---|---|---|---|---|
| L | Open | No closure | Minimal | None | Clean environments, high-speed operation |
| V | Single-side shield | Non-contact | Basic | Very low | Light contamination environments |
| Z | Double-side metal shield | Non-contact | Standard | Low | General industrial environments |
| X | Enhanced shield | Non-contact | Enhanced | Low | Moderate contamination environments |
| S / S2 | Removable shield | Non-contact (snap ring fixed) | Basic | Very low | Applications requiring regular maintenance/cleaning |
| SB | Flanged removable shield | Non-contact (snap ring fixed) | Basic | Very low | Flanged bearings, removable |
Figure: Standard metal shield structure (V, Z type)
Figure: Removable shield structure (X type)
Non-Contact Design
Clearance maintained between shield and inner ring, no additional friction, suitable for high-speed applications.
Stainless Steel Material
Corrosion and wear resistant, matching bearing service life, no additional replacement needed.
Cost-Effective Solution
Compared to contact seals, standard shields are more economical and easy to maintain.
Filmoseal - myonic Proprietary Capillary Seal Technology (Type "F")
Filmoseal is an innovative sealing technology exclusively developed by myonic, combining the low-friction characteristics of shields with the high-efficiency protection of seals.
This is a capillary seal known as "Filmoseal", which was designed exclusively by myonic and is marked with the code letter "F" after the bearing type and before the size specification.
myonic developed "Filmoseal" to combine the advantages of a contactless cover with the practical effect of a seal through the capillary effect of an oil film. This is achieved by the sophisticated design of the shields and the special groove in the ball bearing inner ring.
Filmoseal Technical Advantages
| Characteristic | Traditional Seal | Standard Shield | Filmoseal |
|---|---|---|---|
| Protection Effectiveness | Excellent | Standard | Excellent |
| Frictional Torque | High | Very low | Low |
| Heat Generation | Significant | None | Very low |
| Speed Capability | Low-medium | High | Medium-high |
| Lubricant Retention | Excellent | Standard | Excellent |
Figure: Filmoseal capillary seal principle
Working Principle
This design increases the circulation of the lubricant within the ball bearing, reduces lubricant loss, and significantly reduces external contamination.
The use of an oil impenetrable PTFE seal in the outer ball bearing ring also helps to prevent lubricant loss. This non-contact seal is recommended in cases where high speeds or protection against contamination are required or if the ball bearing is exposed to high centrifugal forces.
"Filmoseal" from myonic is particularly effective with a rotating outer ball bearing ring, as the hermetic seal between the cover washer and the outer ball bearing ring prevents any loss of lubricant without increasing friction, noise or temperature.
Application Recommendation: Filmoseal is particularly suitable for precision equipment requiring long-term maintenance-free operation in clean but non-dust-free environments, such as medical instruments, optical devices, and precision measuring instruments.
Special Seals from myonic
myonic develops special seals and closures that meet the highest customer requirements.
For further information, please contact our sales engineers or technicians.