E59 01 03 04 02 05 a +0,01 b +0,01 PUNCH WITH EJECTOR PIN, STEPPED, SHORT POINT Material: HSS Order No 268.3. Hardness: Shaft 64 ± 2 HRC Head 52 ± 5 HRC Description of FIBRO materials for tool and die components see at the beginning of Chapter E. Execution: Punch head hot upset-forged. Shaft and shoulder precision plunge-ground. Key flats parallel with longest size of shape, unless otherwise specified. Note: With kerf ≤ 0.04 mm, FIBRO rounds off sharp edges for shape 01 and shape 02 if the punch and piercing die bushing are ordered together. This reduces the fitting time and the risk of an edge break during operation. d1 +0,01 +0,4 k R9,5 +0,8 l 1 l 2 d2 h6 +0,2 d3 268. d 2 m5 19 radiussed d1 d2 d3 k l2 amin l1 60 71 80 90 100 1.6 - 4.9 5 8 5 7 1.6 ● ● ● ● ● 2.3 - 5.9 6 9 5 7 2.3 ● ● ● ● ● 3.2 - 7.9 8 11 5 13 3.2 ● ● ● ● ● 4.8 - 9.9 10 13 5 13 4.8 ● ● ● ● ● 4.8 - 12.9 13 16 5 13 4.8 ● ● ● ● ● 5.5 - 15.9 16 19 6.4 13 5.5 ● ● ● ● ● 5.5 - 19.9 20 23 6.4 13 5.5 ● ● ● ● ● 6.5 - 24.9 25 28 6.4 13 6.5 ● ● ● ● ● 268. Punch with ejector pin, stepped, short point Ordering Code (example): Punch with ejector pin, stepped, short point = 268.3. Shaft diameter d2 13 mm = 1300. Length l1 60 mm = 060. Cutting form FORM square = 01. Cutting form width a 4.8 mm = 0480. Cutting form length b 4.8 mm = 0480 Order No = 268.3. 1300. 060. 01. 0480. 0480
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