Outline of Spherical Bushing Unit
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Outline of Spherical Bushing Unit - 1

less OUTLINE OF SPHERICAL BUSHING UNIT Outline of Spherical Bushing Unit SPHERICAL BUSH SET Spherical Bushing Set I For opration of spherical bushing unit (1) Assembly and fixing method of unit © Insert the unit at the specified position of the shaft. @ Fix the inner ring and the shaft with set screws. © Fix the case with bolts. 0 Make sure that the mating part for the unit is suitable for operating conditions. 镕 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.) SBSF (Inner Ring Flange Type) SBSS (Inner Ring Straight Type) SBSR (@ , Outer Ring Only) SBSF SBSS C (2) Fixing method of shaft and inner ring © 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) @ 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. (3) For thrust load © If thrust load is applied, use the flange type inner ring. Solid lubricant is embedded at one side of the outer ring. @ When a flange type is used, make assembly so that the flange area may match the solid lubricant surface at the side. Recommended mating post tolerance is g6 fft To minimize thrust from the inner flange type bushi lubricant is embedded on the outer ring edge. գ^ Stopper pin for outer ring (SUJ2 1pce) is attached. No. Description Qty Material and remark © Inner ring 1 S45C Outer ring 1 Bronze with graphite oilless type(SO#50SP2) © Hexagon socket head screw 2 SCM435 (4) For greasing Grease groove is provided at the outer ring. Greasing can improve wear resistance and durability. Inner ring Outer ring Case No. Catalog No. d d Tolerance d1 Tolerance D1 C S J M Ma f D Tolerance d1 Tolerance h 20 + 0.021 0 28 0 0.013 43.5 31 18.3 8.3 5 4 4 47 ח0.080 0.105 28 +0.061 +0.040 20 204 SBSF SBSS Outer ring SBSR 25 33 0 ח 0.016 47.5 34 19.7 8.7 4 52 0.100 ח0.130 33 +0.075 +0.050 22 205 30 40 57.5 38.1 22.2 9.7 6 5 5 62 40 25 206 30 35 + 0.025 50 67.5 42.9 25.4 11.9 6 6 72 50 27 207 40 60 74.5 49.2 30.2 15.7 7 80 60 29 208 40 45 0 65 0 0.019 79.5 49.2 30.2 15.7 8 7 85 ח0.120 65 +0.090 +0.060 29 209 50 70 84.5 51.6 32.6 17.6 10 8 90 0.155 70 30 210 50 (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. (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. Order Catalog No. d 35 35 c D 137 138

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