GB/T 2861.1-1990 A-type guide pin for die guide device GB/T2861.1-1990 Standard download decompression password: www.bzxz.net
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National Standard of the People's Republic of China Guide unit for press tools Guide pillars, type A Subject content and scope of application GB/T 2861.1--90 Replaces GB2861.1--81 This standard specifies the materials, heat treatment, technical conditions, structural types and specifications of die guide units , type A guide pillars. This standard applies to die sliding guide die frames. Reference standards GB/T 12446 Technical conditions for die frame parts GB 6991 Technical conditions for high-quality carbon structural steel Materials, heat treatment, technical conditions, structural types and specifications of guide pillars 3.1 Material: 20 steel GB699. Heat treatment: carburizing depth 0.8~1.2mm, hardness HRC58~62.3.2 3.3Technical conditions are in accordance with GB/T12446. 3.4 Structural type and specifications are shown in the figure and table. Approved by the State Administration of Technical Supervision on July 23, 1990, implemented on May 1, 1991 3.5Marking example: bzxz.net R is determined by the manufacturer. GB/T2861.1—90 The rest 63 GB 115- 8 Type A guide pillar with diameter d=20mm, limit deviation h5 and length L=120mm: Guide pillar A20h5×120 GB/T 2861.1 Basic dimensions Limit deviation (h5) GB/T 2861.1-90 Basic dimensions Limit deviation Basic dimensions Additional notes: Limit deviation (h6) GB/T 2861.1-90 Basic dimensions This standard is proposed by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Mold Standardization. 55 Limit Deviation This standard was drafted by the Mold Branch of Guilin Electrical Science Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Wang Huachang and Jia Guangwei. This standard is entrusted to the Mold Branch of Guilin Electrical Science Research Institute of the Ministry of Machinery and Electronics Industry for interpretation. (h6) Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.