Brief Introduction to the Developed Products and Technologies

Bearings which are applicably to the medical equipment that requires high precision,such as gamma knife, CT machine, X-ray machine, cardiovascular angiography (DSA) etc.,are typically with the characteristics of large-size, thin-wall, long service life, high rotation accuracy (P5 or higher),low vibration noise, small starting friction torque, large number of mounting holes with high precision .Such bearings are special and with high technology and accessional value.

The main technical specifications are as follows:

1 The overall size and tolerance of various types of bearings meet the customer’s requirements;

2 The rotating precision achieves P5 and higher, which reaches the advanced level of similar products abroad;

3 The bearing clearance meets the requirements;

4 The bearing operates smoothly and the noise level meets the customer’s requirements;

5 The service life exceeds the customer’s requirement of 200×106 revolutions;

6 The precision of the mounting holes all meet the customer’s requirements.

Some technical parameters are introduced as follows: bearings for high precision CT scanner, bearings for SGS source device of super gamma knife.

Bearings for CT scanner

The structure of four-point contact ball is adopted with the following major technical parameters:

1 Overall dimension: Φ680mmXΦ865mmX55mm;

2 Bearing rotation speed:60rpm (now is 180~300 rpm);

3 Service life: 200X10６revolutions;

4 Rotation precision:P5 (high precision);

5 Noise level: less than 70dB;

6 Friction torque:4N·m;

7 Sealing performance: oil leak-free.

Bearings for SGS source device of super gamma knife

The structure of cross cylindrical rollers is adopted with the following major technical parameters:

1 Overall dimension: Φ1000mmXΦ1400mmX200mm;

2 Outer diameter difference of each set of bearing: not more than 0.02mm;

3 Bearing precision: P5;

4 Gear precision after teeth grinding :grade 7.

5 The location range of the mounting holes is strictly required to be less than Φ0.01mm.The noise level of bearing under high rotation speed is less than 70dB.