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)
Eccentricity of the bolt: Aim to obtain the lowest possible Eccentricity of bolt positions   Large eccentricity Minimal eccentricity
Cylindrical Joint Diagram 1 Cylindrical Joint Diagram 2
Eccentricity of the load introduction: Minimal eccentricity causes smaller additional bolt forces   Large eccentricity   Minimal eccentricity
Cylindrical Joint Diagram 3 Cylindrical Joint Diagram 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  
Cylindrical Joint Diagram 5 Cylindrical Joint Diagram 6
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  
Cylindrical Joint Diagram 7 Cylindrical Joint Diagram 8

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.