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Press-fitting (Rolled bushing) Oiles Drymet LF PTFE multi-layer bearings with back metals Housing chamfer For the housing chamfer, either a round chamfer or a tapered chamfer is recommended. In case of a C-surface chamfer, (more than C1.0) make sure there is no burr. Smoother press-fitting is possible by applying small amount of grease or lubricant. Press-fitting jig Generally, as shown in the figure 1, a mandrel is used for the press-fitting. However use of a guide ring facilitates easier press-fitting. Use of a guide ring prevents damage of a bushing at the time of press-fitting, The dimension of a guide ring should be calculated from the table below. Inner diameter of the guide ring should be the size so that the bushing can be inserted by hands. Length of the guide ring should be more than one-third of the bushing, or if possible, it should be the same length as the bushing. Dimension of bushing I.D. D0 O.D. D1 Length L Dimension of mandrel ※1d0=D0−(0.05 to 0.10) ※2d1=D1−(0.20 to 0.30) R≧L The dimension of mandrel should be calculated from table below. Load Load Mandrel Bushing Guide ring Housing Regular press-fitting Press-fitting with guide ring L R D0 d0 d1 D1 D1+(10 to 15) C1.0 Inner diameter of the guide ring should be the size that bushing can be inserted by hands. The length of the guide ring should be more than one-third of the bushing, or if possible, it should be the same length as the bushing. The dimension of guide ring should be calculated from table below. Dimension of bushing Up to φ40 φ42 to φ60 Over φ65 Guide ring O.D. D1+(10 to 15) Guide ring I.D. D1+(0.1 to 0.3) D1+(0.2 to 0.5) D1+(0.5 to 1.0) Figure 1 Figure 2 Figure 3 ※1 Techmet B Standard Type (TCB) should be Do-(0.25 to 0.30). ※2 Use of flange bushings should be the same size of flange. 149Selection Guide Product Air Bearings Metallic Bearing Multi-layer Bearing Plastic Bearing Information Technical Corporate Profi le Information Slide Shifter