Standard_Parts_Catalogue

Page 1113 | 3.2 Mounting, Positioning, Leveling with Screws, Clamping and Supporting Elements 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 1 2 d 1 F7 l 1 d 2 n6 d 3 l 2 ... ,0 ... ,1 ... ,2 ... ,3 ... ,4 ... ,5 ... ,6 ... ,7 ... ,8 ... ,9 B 21 - - - - B 21,5 - - - - 20 36 45 30 34 5 B 22 - - - - - - - - - 20 36 45 30 34 5 - - - - - B 22,5 - - - - 20 36 45 35 39 5 B 23 - - - - B 23,5 - - - - 20 36 45 35 39 5 B 24 - - - - B 24,5 - - - - 20 36 45 35 39 5 B 25 - - - - B 25,5 - - - - 20 36 45 35 39 5 B 26 - - - - - - - - - 20 36 45 35 39 5 - - - - - B 26,5 - - - - 25 45 56 42 46 5 B 27 - - - - B 27,5 - - - - 25 45 56 42 46 5 B 28 - - - - B 28,5 - - - - 25 45 56 42 46 5 B 29 - - - - B 29,5 - - - - 25 45 56 42 46 5 B 30 - - - - - - - - - 25 45 56 42 46 5 - - - - - B 30,5 - - - - 25 45 56 48 52 5 B 31 - - - - B 31,5 - - - - 25 45 56 48 52 5 B 32 - - - - B 32,5 - - - - 25 45 56 48 52 5 B 33 - - - - B 33,5 - - - - 25 45 56 48 52 5 B 34 - - - - B 34,5 - - - - 25 45 56 48 52 5 B 35 - - - - - - - - - 25 45 56 48 52 5 B 36 - - - - - - - - - 30 56 67 55 59 5 B 37 - - - - - - - - - 30 56 67 55 59 5 B 38 - - - - - - - - - 30 56 67 55 59 5 B 39 - - - - - - - - - 30 56 67 55 59 5 B 40 - - - - - - - - - 30 56 67 55 59 5 B 41 - - - - - - - - - 30 56 67 55 59 5 B 42 - - - - - - - - - 30 56 67 55 59 5 Guide bushings DIN 172 / DIN 179 are characterized by the tight dimensi- onal and positional tolerances in connection with the hardened and finely machined surface. As a result, they are suitable for extremely universal use in many applications. Holes with tolerance H7 are recommended for installing the bushings. In connection with the outer diameter of the bushing with a tolerance of n6, use of a transition adapter is recommended. For guide applications, combination with the guide pins GN 771.1 is recommended. see also... • Guide Bushings GN 172.1 (with Conical Bore) → Page 941 • Guide Bushings GN 179.1 (with Conical Bore) → Page 941 • Guide Pins GN 771.1 → Page 1114 • Indexing Plungers GN 817.3 (for Precision Locating) → Page 935 • Indexing Plungers GN 817.5 (for Precision Locating) → Page 938 Information • Steel Hardened (HRC 62 ±2) • Fit sizes d 1 , d 2 ground • ISO Fundamental Tolerances → Page 2151 • RoHS Specification • Other bores d 1 • Bore d 1 both-sided rounded (Type B) On request DIN 172 / DIN 179 Guide Bushings continued 1 d 1 2 l 1 3 Type How to order (With collar) 1 2 3 DIN 172 -B4,7-16-A 1 d 1 2 l 1 3 Type How to order (Without collar) 1 2 3 DIN 179-B32,5-45-A