| The high-speed dental drill ball bearings which are for the high-speed dental hand piece,can rotate at the speed of |
| 400,000 rpm, replaceable with the dental hand pieces produced in Japan, Germany and UK etc. At the |
| normal working condition, the clinical service life is no less than six months.The high-speed dental drill |
|
| ball bearing is a kind of precision micro bearing, thus the careful installation and use, meticulous operation |
| and elaborate maintenance are needed, otherwise its performance and working life will be affected directly. |
| For instance, the damage of ball and groove by the impulsive load during the assembly, bearing |
|
| contamination and improper lubrication etc., all these will lead to the lower speed, higher vibration and noise, fracture |
| of cage and shorter service life of the bearing.With regard to the bearing installation, the interference fit of the shaft |
| and bearing bore is preferred to be within 0-2um. The roundness deviation of the shaft shall be less than 2um. When |
| the shaft is pressed into the bearing bore, the acting force shall be directly on the end face of inner ring. The force |
| shall not pass through the ring raceway groove or the steel ball, otherwise the bearing precision will be damaged. |
| After a pair of bearings are installed on the turbine, the bearing and the turbine shall be cleaned, then drop the lubricating oil. |
| At the moment, they can be mounted in the head (Never use the alcohol or acetone as the cleaning liquid). In order to |
| ensure the high speed, after mounting in the head, apply some axial preload on the pair of bearings. The load is 1-2N. |
| After the finish of installation, the shaft shall not have the axial moving. The rotation of the bearing shall be flexible. |
| If the axial preload is too tight or loose, replace the washer or add or remove the gasket, so as to ensure the correct preload, |
| in case of the revolution skidding or top-like rotation of steel ball at the high speed.The maintenance of turbine head is very |
| important for the normal working and long service life of the bearing. In the clinical use in the hospital, besides the daily disinfection, |
| the daily cleaning and maintenance shall be done to the turbine head. Before the use, demount it and apply the cleaning liquid. |
| Then mount it, and fix the drill bit by hand instead of rotating. Ventilate the compressed air for some seconds. Use it after the |
| bearing is cleaned and lubricated by the compressed air. |
|
|
|
| GJP Code |
Dimensions |
Speed Limited |
Air pressure |
Noise |
| d |
D |
B |
rpm |
MPa |
dB |
| S418FMCKHH |
3.175 |
6.35/7.5 |
2.78 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| S418FMCKH |
3.175 |
6.35/7.5 |
2.78 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| S418FMCKW |
3.175 |
6.35/7.5 |
2.78 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| S418MCKHH |
3.175 |
6.35 |
2.78 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| S418MCKH |
3.175 |
6.35 |
2.78 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| S418MCKK |
3.175 |
6.35 |
2.78 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| S418MCK |
3.175 |
6.35 |
2.38 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| C93KXA6 |
3.175 |
6.35/5.97 |
2.38 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
| PA-S03(SET) |
3.175 |
6.35/5.97 |
2.78 |
350000 to 400000 |
0.2 to 0.25 |
not more than 70dB |
