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Hi all,

I need to convert a cooling fixture from a weighted system to a plate and bolt system. I'd like to use 4 - 10mm cap screws and a pressure plate to replace 7.82kg of weight. The weights are 190mm x 70mm of contact area. The pressure plate will have flanges to accommodate the bolts. But the contact area won't change.

Assuming each bolt must provide 1/4 of the pressure of the weights, each would need to provide 1.955 kg. So, T=KFd and I used 0.2 for the K constant, 10mm for the bolt dia, and 1.955kg (19.17N) for the required Force. no lubricant and I get 0.0383 Nm.

It seems to be too little torque. Would someone be nice enough to check my work?

Thanks!!

Plastixman

I need to convert a cooling fixture from a weighted system to a plate and bolt system. I'd like to use 4 - 10mm cap screws and a pressure plate to replace 7.82kg of weight. The weights are 190mm x 70mm of contact area. The pressure plate will have flanges to accommodate the bolts. But the contact area won't change.

Assuming each bolt must provide 1/4 of the pressure of the weights, each would need to provide 1.955 kg. So, T=KFd and I used 0.2 for the K constant, 10mm for the bolt dia, and 1.955kg (19.17N) for the required Force. no lubricant and I get 0.0383 Nm.

It seems to be too little torque. Would someone be nice enough to check my work?

Thanks!!

Plastixman

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