Mechanical seal work should pay attention to the problem 1. Install Considerations When a. To be very careful to avoid the installation bias arising from the installation (1) on the gland coupling alignment should be carried out after the bolts should be evenly branched 250ZJ-I -A78 mechanical seal, preventing the gland end surface deflection, check the point of the mechanical seal with a feeler, the error is less than 0.05 mm. (2) Check the gland and the shaft or sleeve diameter with the gap (ie, concentricity), surrounded uniformly, with the feeler points tolerance is not greater than 0.01 mm. b. spring compression according to the provisions 250ZJ-I-A70 mechanical seals, does not allow too large or too small phenomenon, requiring error 2.00 mm. Excessive face pressure to increase and accelerate the wear face. Too small will cause less than the pressure seal and can not play a role. c. After ring installation 250ZJ-I-A73 mechanical seal, the ring is pressed against the rear springs should automatically rebound Second, the mechanical seal installation and use requirements 1. Mechanical seal machine accuracy requirements (to pump mechanical seal for example) radial (1) Install mechanical seal shaft (or sleeve) does not exceed the maximum runout 0.04 ~ 0.06mm. (2) axial movement of the rotor does not exceed 0.3mm. (3) locating the seal cavity and seal cap combined face shaft (or sleeve) surface runout tolerance maximum of 0.04 ~ 0.06mm. 2. unanimously confirmed that the seal (1) Make sure the seal is installed with the requirements of the model. (2) carefully before installation and assembly drawing control, the number of parts are complete. (3) and the coil spring transmission of mechanical seals, which have left the spring, right-handed points, subject to the spin axis always choose. 250ZJ-I-A78 mechanical seals, mechanical seals, wear-resistant slurry pump supplied by Anguo City Pump Co., Ltd. Shi Yuan. Anguo Shi Yuan Pump Co., Ltd. (www.shiyuanbeng.com) strong, credible, in Baoding centrifugal pump industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Shiyuan water pump into the brilliant and you work for a better future!