OUTLINE OF SPHERICAL BUSHING UNIT Outline of Spherical Bushing Unit OILLESS SPHERICAL BUSH SET Spherical Bushing Set RoHS q For operation of spherical bushing unit 　(1) Assembly and fixing method of unit q Insert the unit at the specified position of the shaft. w Fix the inner ring and the shaft with set screws. e Fix the case with bolts. 　　　 SBSF (Inner Ring Flange Type) SBSS (Inner Ring Straight Type) SBSR (w , Outer Ring Only) Make sure that the mating part for the unit is suitable for operating conditions. Be careful that there is no foreign matter or step on the mounting surface. • When three units or more are used, align the shaft correctly. (The tolerance should be +/-0.25 mm.) • 　(3) For thrust load q If thrust load is applied, use the flange type inner ring. Solid lubricant is embedded at one side of the outer ring. w When a flange type is used, make assembly so that the flange area may match the solid lubricant surface at the side. 　(2) Fixing method of shaft and inner ring q Fix the inner ring at the position where the flange does not come in contact with the outer ring end. Fix it with the clearance of 0.1 mm as a guideline. If interference between the inner ring flange and the outer ring end due to thermal expansion/shrink of the shaft is concerned, adjust the clearance appropriately. (One straight type screw per position is used) w If the unit is used at a place or environment where vibration or impact is applied, provide seating at the set screw position of the shaft with a file or borer. Recommended mating post tolerance is g6 Bronze with graphite oilless type(SO#50SP2) Stopper pin for outer ring (SUJ2 1pce) is attached. 　(4) For greasing Grease groove is provided at the outer ring. Greasing can improve wear resistance and durability. To minimize thrust from the inner flange type bushing, solid lubricant is embedded on the outer ring edge. e Hexagon socket head screw 2 　(6) Measures for heat generation If the unit is used at high temperature, thermal expansion (thrust direction) of the shaft occurs. If the flange type inner ring is used, it is recommended to design the flange outside. 　(5) Accuracy and design of shaft The recommended tolerance of the mating shaft is g6. Since the inner ring slides with the outer ring, material and hardness of the shaft is not particularly important. Heat treatment of the shaft surface is not required either. Outer ring SBSF SBSS Outer ring SBSF SBSR Slide Unit