Rexroth Tightening System 350 System Documentation - Rhino ...

9 Tightening Processes Tightening Technology | Bosch Rexroth AG 243/3169.4 Example parameterizationsPrg_Loosen_Retight programTable 9–4: Explanation of the tightening program Prg_Loosen_Retight.Step Parameters ExplanationStart 1, A - Start of tightening programScrew in 2, A Target function: Angle 1400° Bolt is screwed inAdditional function: Speed 120 rpm Positive speed, as positive direction of rotation of the spindleMonitoring function: AngleA–: 1350°, A+: 1450°Angle of turn monitoringTightening 1 * 3, A Target function: Torque 10 Nm Tightening of parts with 10 Nm until screw head is flushAdditional function: Speed 30 rpm Positive speed, as positive direction of rotation of the spindleMonitoring function: TorqueT–: 9.5 Nm, T+: 10.5 NmTorque monitoringLoosen 4, A Target function: Angle 360° Bolt is loosened by one revolutionAdditional function: speed –100 rpm Negative speed, as negative direction of rotation of the spindleMonitoring function: AngleA–: 350°, A+: 370°Angle of turn monitoringTightening 2 5, A Target function: Torque 12 Nm Tighten the parts with 12 NmAdditional function: Speed 18 rpm Positive speed, as positive direction of rotation of the spindleMonitoring function: TorqueT–: 11.5 Nm, T+: 12.8 NmTorque monitoringEnd 6, A - End of the tightening program* Note: First tightening in the loosening/retightening process is approx. 10% below the end tightening torque.System 350 | 3 608 878 040/05.2008