Transmittable forces

Transmittable forces

In conjunction with the lubrication, the plastic coating of the guide bushings ensures easy-running, low-wear guidance. However, the good sliding properties of the bushing have a detrimental effect on the transmittable forces. Therefore the table values "transmittable forces" are guideline values without commitment.

F: Maximum admissible clamping force.

C: Required functional installation space
Spieth clamping sleeves must be clamped using the controlled applicaton of force. The clamping force cannot be applied in relation fo the coamping path. To prevent premature blocking, a "free" functional path "C" must be provided.

M: Transmittable torque at Fa = 0.

Fa: Transmittable axial force at M = 0.
Fa-values are calculated in accordance with:

M	= Transmittable torque (table) [Nm]
d1	= Shaft diameter [mm]

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M and Fa: If both torque and axial force act simultaneously on a clamping sleeve, the following formula must be used to check whether the resulting torque Mr can be transmitted:

M	= Transmittable torque (table) [Nm]
Mr	= Resulting torque [Nm]
Me	= Required torque [Nm]
Fae	= Required axial force [N]
d1	= Shaft diameter [mm]

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If it is not possible to apply the clamping force F, the following formula is used to calculate approximately which torque Mred can be transmitted with the given clamping force Fgeg(<F).

Mred	= Reduced transmittable torque [Nm]
M	= Transmittable torque (table) [Nm]
Fgeg	= Given clamping force (<F) [N]
F	= max. permissible clamping force (table) [N]

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If you wish to determine the necessary clamping force for a transmittable torque Mred <M, the following approximated relation applies:

Ferf	= Required clamping force [N]
Mred	= Reduced transmittable torque [Nm]
F	= max. permissible clamping force (table)
M	= Transmittable torque (table) [Nm]

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