V348 series a total of six leaf spring leaf spring, the leaf spring (two code have 7C19-5560-EF specifications are 76.2*17), 7C19-5560-GD (specifications are 76.2*19), 7C19-5560-HC (specifications are 76.2*17), 7C19-5560-JC (specification 76.2*19, 76.2*17 respectively); three spring code have 7C19-5560-BD (specifications for 76.2*17, 76.2*17, 76.2*21), 7C19-5560-DD (specifications are 76.2*14, 76.2*14, 76.2*19). V348 series spring material are 51CrV4, spring loading of length 1368, 694 front expansion length, ear diameter mounting Φ 16.2 hanging front, ear diameter mounting Φ 14.2 hanging back. The series of spring are few leaf spring, and high stress, load stress up to 750Mp