Delivery: ex stock/3 weeks | Warranty: 24 months Metal Bellows Coupling MODEL 8690 Highlights R ated torques from 0 ... ±0,5 N·m to 0 ... ± 200 N·m A daptation to the required shaft diameter A ccurate transmission of angle and torque S uitable for dynamic and static application Options Keyways F inely balanced version Applications S imple assembly and safe integration of torque sensors C ompensation of shaft diameter Product description Even after careful alignment of the shaft ends of the sensors with the shaft ends of the plant; slight axial, angular or lateral shift must be anticipated. These interfere with the measurement and can lead to damage on the sensor in the event of high speeds. Rated torque ≥ 2 N·m The 8690-type steel bellow coupling is fastened, using a clamping hub per torque transmission, to the sensor and plant shafts. The facility-side bore is adapted to the existing shaft diameter, which means that the torque sensor can be mechanically integrated without further adaptations. A stainless steel bellow transmits the torque between the clamping hubs without backlash. Through its highly elastic but stiff material properties, a lossless transfer of the torque transmission is guaranteed. Axial, angular and lateral shifts caused by assembly and construction are effectively compensated. burster Sensors and Process Instruments – Technical changes reserved. All data sheets at www.burs

Nominal torque [N·m] from 0 … Mechanical values Possible bore diameter D1/D2 (H7) Screws E ISO 4029 / 4762 Distance between centers F Distance G Environmental conditions Operating temperature range Installation Tightening torque Other Overload protection briefly 150 % of nominal torque hub: aluminium; bellows: steel Max. speed in finely balanced design on request burster Sensors and Process Instruments – Technical changes reserved. All data sheets at w

Dimensional drawing Model 8690 For detailed dimensions, you can find the CAD data of the sensor on our website www.burster.de Mounting The couplings have two different attachment systems: To rated torque 0.5 N·m: The coupling has two radial set screws (ISO 4029). The screws are forming an angle of 120°. The screws are arranged at an angle of 120° to each other and press directly on the shaft. With integrated disassembly nut. Mounting instructions From rated torque 1 N·m: The connection between the shaft and coupling is made with a clamping hub. Only one radially arranged clamping screw (ISO 4762)...

Order Code Nominal torque ore sensor-side D1, specify two digits in mm B B ore facility-side diameter D2, specify two digits in mm ithout keyway W inely balanced design F burster Sensors and Process Instruments – Technical changes reserved. All data sheets at www.b