Item No :
SR144TLZWNSize (d*D*B) :
3.175x6.35x2.78mmMaterial :
Stainless steel 440C + Si3N4 ceramic ballsLead Time :
3-5 workdaysMOQ :
50 pcsSR144TLZWN Premium High-speed Dental Drill Bearing
⚙️Key Structures and Materials:
Rolling Elements: Utilize silicon nitride (Si3N4) ceramic balls. This material has a Vickers hardness of 1500 - 2000HV, which is several times higher than that of traditional steel balls. Moreover, its density is only 60% of that of steel balls, significantly reducing centrifugal force during high-speed rotation. Additionally, its thermal expansion coefficient is only 25% of that of steel balls, ensuring dimensional stability during high-speed operation and minimizing temperature rise issues.
Outer Rings: Select refined stainless steel 440C. After vacuum heat treatment, the roundness error can be controlled within a small range, balancing wear resistance and structural strength, and can be adapted to the clinical environment of high-temperature and high-pressure sterilization.
Cages: Use special polyimide (Torlon) material. This material can operate at 260℃ for a long time and has an anti-rheological property far exceeding that of ordinary nylon, ensuring the structural stability of the bearing during long-term high-frequency vibration and ultra-high-speed operation. It can also reduce operating friction.
Rotation Speed: Adapted to the high-speed dental diagnosis needs, the rotation speed can typically reach 300,000 - 500,000 revolutions per minute, meeting the requirements for rotational speed stability in high-precision surgeries such as preparing dental cavities for implants.
⚙️Technical Parameters:
| Item No. | SR144TLZWN |
| Branding | Famous brand/RMO/Neutral/OEM |
| Sealing | OPEN, ZZ , 2RS |
| Material | Stainless steel 440C + Si3N4 ceramic balls |
| Lead Time | 3-5 days |
| Precision | ABEC-1、ABEC-3、ABEC-5、ABEC-7 |
| Cage material | Torlon |
| Shipping Port | GUANGZHOU, NINGBO, SHANGHAI |
| Payment | 100% T/T, or 30% T/T In Advance ,70% T/T After Finished Production |
Low power consumption and stability: The combination of ceramic balls and polyimide cages results in an extremely low friction coefficient for the bearing, with the temperature rise not exceeding 15°C during ultra-high-speed operation, preventing lubrication failure due to high temperatures; at the same time, the vibration value can be controlled below 0.8mm/s, and the working noise can be kept below 70dB, reducing the interference of noise during diagnosis and treatment for doctors and patients.
Durability and easy disinfection: Under normal clinical usage conditions, the service life is typically over 6 months; and it is compatible with 135℃ high-temperature and high-pressure sterilization. After 200 sterilization cycles, the performance changes such as torque still remain within a small range, meeting the strict disinfection requirements of oral medical treatment.
High precision compatibility: The processing accuracy reaches the micron level, such as the roundness error of the sleeve groove not exceeding 0.5μm, and the radial runout is stable within 5μm, which can reduce the phenomenon of drill rod swaying during diagnosis and treatment, ensuring the accuracy of procedures such as dental implants and root canal treatment.
| dental drill bearing series | ||
| Size: Bore: 3.175(0.125) OD:6.35 (0.250) width: 2.38(0.0937) |
Feature | ITEM |
| Smooth | SR144TL | |
| SR144TLZ | ||
| SR144TLN | ||
| SR144TLZN | ||
| Flanged | SFR144TL | |
| SFR144TLZ | ||
| SFR144TLN | ||
| SRF144TLZN | ||
| Stepped | SR144TLK | |
| SR144TLKZ | ||
| SR144TLKN | ||
| SR144TLKZN | ||
| Size: Bore: 3.175(0.125) OD:6.35 (0.250) Width: 2.78 (0.1094) |
Feature | ITEM |
| Smooth | SR144TLW | |
| SR144TLZW | ||
| SR144TLNW | ||
| SR144TLZNW | ||
| Flanged | SFR144TLW | |
| SFR144TLZW | ||
| SFR144TLNW | ||
| SRF144TLZNW | ||
| Flanged Unique | SFR144TLGW | |
| SFR144TLGZW | ||
| SFR144TLGNW | ||
| SRF144TLZGNW | ||
| Stepped | SR144TLKW | |
| SR144TLKZW | ||
| SR144TLKNW | ||
| SR144TLKZNW | ||
The SR144TLZWN bearing is mainly suitable for various high-speed pneumatic dental handpieces, including turbine dental drills, root canal treatment dental drills, and other core diagnostic equipment. It is widely used in comprehensive dental clinics, dental hospitals, and dental beauty institutions.
| 1. Keep clean | 2. Use with caution | 3. appropriate tool | 4. Hot-loading | 5. Be careful of rust |
| Dust will have a bad effect on the bearing, so keep the surrounding clean. | Strong impact during use can easily cause scratches and indentations. | Avoid replacing existing tools, and use appropriate tools. | Bearings are precision parts, so hot installation is recommended. | Sweat on your hands during operation will cause rust, so it is best to wear gloves. |
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