Shrink Discs 3-part External clamping devices

Product catalog Description of function Three part shrink disc of the types TAS 30.. & TAS 52.. The main function of a shrink disc is the safe connection of a shaft with a hub by means of friction. For example, between a drive shaft and a transmission hollow shaft. The shrink disc generates a backlash-free connection by pressing the hub onto the shaft. This connection is mainly used to transmit torque. The shrink disc only provides the required forces, and transfers no forces or moments between shaft and hub by itself. Therefore, the force flow does not pass through it. It is installed by sliding...

Clamping length for shrink discs The clamping length l of the shrink disk at the junction lK (between shaft and hub), should be chosen to be somewhat wider to minimize the stress concentration at this point. An excessively wide connection increases the tendency to fretting corrosion, because the pressure decreases outward. The pressure is distributed approximately at an angle between 15° - 20° through the hub. This is largely dependent on the hub wall thickness and stiffness of the shaft. A good approximation can be made from the following equation: Clamping length of the contact area: lK = 0,316...

Product catalog The calculation of the values, given in the catalogue, are based on the following assumptions and simplifications: Transmissible torque A shrink disc connection is capable of transmitting torque, bending moment and axial force. Alternatively, the transmissible torque Mmax is specified in the product data. If such loads occur simultaneously then they must be added vectorially to the resultant moment Mres. The formula below applies to the resulting moment: At different load cases, these are individually checked against Mmax ! Mres is determined for combined loads as follows: Mres=...

The calculation of the values, given in the catalogue, are based on the following assumptions and simplifications: Bending moment Here the situation is similar to the radial forces. However the pressure is greatest at the ends of the connection in this case. Again, the amount and stiffness are important. This leads to the following approximation: Mg Apw = 4,5 ■ UW >K As before, the modified pressures results from: The conditions for minimum and maximum pressure are the same as before. It should be noted that there could be a change in pressure due to radial force! Shaft and hub calculation The...

Nominal diameter of the shrink disc Shaft diameter Maximal transmittable torque Outer diameter Length of the inner ring Excess length Width of the shrink disc Pitch circle diameter Attachment size Tightening torque of the clamping screws Number of clamping screws Size of the clamping screws Permitted rotational frequency Average Pressure to the hub Moment of inertia • Discs galvanized • without washers TAS Schafer GmbH • OsterfeldstraUe 75 • 58300 Wetter

Product catalog TAS Schafer GmbH • OsterfeldstraGe 75 • 58300 Wetter

Nominal diameter of the shrink disc Shaft diameter Maximal transmittable torque Outer diameter Length of the inner ring Excess length Width of the shrink disc Pitch circle diameter Attachment size Tightening torque of the clamping screws Number of clamping screws Size of the clamping screws Permitted rotational frequency Average pressure to the hub Moment of inertia d < 140 Discs galvanized without washers d > 140 Discs painted with washers Dimensions H & e in unlocked position Hexagon head bolts are used as standard. Upon request we provide all sized shrink discs with hexgon socket head bolts...

Product catalog TAS Schafer GmbH • OsterfeldstraGe 75 • 58300 Wetter

d [mm] Nominal diameter of the shrink disc dW [mm] Shaft diameter Maximal transmittable torque Outer diameter Length of the inner ring Excess length Width of the shrink disc Pitch circle diameter Attachment size Tightening torque of the clamping screws Number of clamping screws Size of the clamping screws Permitted rotational frequency pN [N/mm2] Average pressure to the hub I [kgm2] Moment of inertia Design of the shrink disc d < 140 Discs galvanized without washers d > 140 Discs painted with washers Dimensions H & e in unlocked position Hexagon head bolts are used as standard. Upon request we...

Product catalog Please note: All values refer to shrink disk design HALF! Please provide us the dimension of „y" or the length of screws. Otherwise we can not provide appropriate screws! (see ordering information) Applies to shrink disc design HALF-G: • The required screw length is: Screw length (3051 Light-Range) - l1 + 2 a + y (rounded up to standard lengths) Applies to shrink disc design SPLIT: • The design consists of 1x HALF-D + 1x HALF-G • Delivery is possible with or without screws • Maximum transmittable torque: Mges = 2 Mmax • The required screw length: Screw length (3051 Light-Range)...

Nominal diameter of the shrink disc Shaft diameter Maximal transmittable torque Outer diameter Length of the inner ring Excess length Width of the shrink disc Pitch circle diameter Attachment size Tightening torque of the clamping screws Number of clamping screws Size of the clamping screws Permitted rotational frequency Average pressure to the hub Moment of inertia d < 115 Discs galvanized without washers d > 115 Discs painted with washers Dimensions H & e in unlocked position Hexagon head bolts are used as standard. Upon request we provide all sized shrink discs with hexagon socket head bolts...

Product catalog TAS Schafer GmbH • OsterfeldstraGe 75 • 58300 Wetter

3071 Half/Split (Standard-Range) HALF-D Split Used symbols Nominal diameter of the shrink disc Shaft diameter Maximal transmittable torque Outer diameter Length of the inner ring Excess length Width of the shrink disc Pitch circle diameter Attachment size Tightening torque of the clamping screws Number of clamping screws Size of the clamping screws Permitted rotational frequency Average Pressure to the hub Moment of inertia Design of the shrink disc d < 115 Discs galvanized without washers d > 115 Discs painted with washers Dimensions H & e in unlocked position Deviation from the standard shaft...