This paper studied the precision variation of fine shafting under the low temperature environment in detail from the aspects of material science and assembly clearance, concluded valid method to guarantee the precision of shafting under the low temperature environment.

In view of the current difficulties for measuring and valuating the assembly clearances between car door and car side , the real measurement data of car door and car side have been fitted with the aid of virtual computer assembly technique.

Aiming at laggard and low automatization degree of clearance measure method on axial assembly clearance between half shaft assembly and rear axle housing in automotive rear axle assembly,a new type clearanceometer was developed.

This paper introduced the tolerance clearance for sleeve jointing tubes with an inorganic and three organic bonding agents.

The impact of the fit clearances of kinematic pairs on the performance of the liquid-jet hammer;

Based on finite element method,stiffness characteristics were investigated under different whirling angle,pedestal parameters,and fit clearance,to present guidance for design of elastic ring.

The effect of fit clearance between hoping strips and blades orifices on the stress distribution on blade was explored.

The results show that the clearance of spool and valve body should be controled within 0 007 mm, error of centralization of throttle valve within 30%.

The clearance between oil distribution axle and rotor of radial piston pump can directly influence the performance and life of pump.