Design Guidelines for Cylindrical Joints

According to VDI 2230 Guidelines

Cylindrical Joints
Item	Guidelines for design	Disadvantages	Advantages
1	Preloads: Preloads as high as possible *Higher strength grade *Exact tightening method *Low coefficients of friction	Low Preloads	High preloads (Choose tightening method with small tightening factor)
2	Eccentricity of the bolt: Aim to obtain the lowest possible Eccentricity of bolt positions	Large eccentricity	Minimal eccentricity
3	Eccentricity of the load introduction: Minimal eccentricity causes smaller additional bolt forces	Large eccentricity	Minimal eccentricity
4	Height of load introduction: Introduce the load as close to the interface as possible	Load introduction of the upper region	Load introduction in the vicinity of the interface
5	Rigidity bolt - cylinder: The resilience of the bolt should be as high as possible, compared to the resilience of the clamped part. (If need be, with reduced body diameter bolts)	Thin small cylinder (for given nominal diameter)	G = dW+hmin

Note: Due to the fact that fastening applications differ greatly, the above information is for guidance only and is correct to the best of our knowledge. The customer must satisfy themselves with the performance of the fastener and validity of the data. TR Fastenings will not be held responsible for any failure that may occur from the use of this information.