Jaw Crusher Tension Rods

The tension rod is a key auxiliary component in jaw crushers, connecting the swing jaw’s lower part to the frame, and functioning to tension the toggle plate and absorb impacts via a spring. It comprises a high-strength rod body, tension spring (60Si2Mn), adjusting nut, and connecting pins, with materials like 40Cr (tensile strength ≥800 MPa) for the rod. Manufacturing involves forging and precision machining of the rod (with heat treatment to 240–280 HBW), spring coiling/heat treatment (38–42 HRC), and strict quality checks (MT/UT for defects, dimensional verification, and tension testing). Quality control ensures stable performance under load, with a 1–2 year service life, critical for crusher safety and operational stability.