JKS-200-type lock of the machine is a lightweight portable models. It is simple operation, easy handling, using high pressure hand pump for the power source, more suitable for field work and no power hose assembly with power production. Third, the main technical parameters 1. Specifications: JKS-200 type 2. Cylinder thrust: 47T 3. pump displacement: 30ml 4. Hydraulic oil: Summer YB-N46 winter YB-N32 5. shrink tube range: φ6-φ32 6. Single Weight: 100kg 7. Volume: 600 × 500 × 370mm Fourth, use and maintenance 1. Lock tube should be preceded by the corresponding mold put clockwise installed, and the nose cone and two exposed piston rod Wipe clean. 2. pressure off before unloading handle 10 (clockwise off), while closing the rewind switch 7. Then begin by pressing a pressure lever, with the increase of discharge of oil, the need to observe the changes in pressure gauge pointer, when the general withholding hose, the pressure must not exceed 20MPA. 3. Until the tubing lock should rewind switch 7 unloading the mold open, remove the hose. (Note: The vertical position to facilitate the rapid unloading). 4. Once the work is completed must take the machine clean, cover well with plastic sheeting.