Where lengths are such that avoidance of the critical speed by use of a larger tube diameter is not practical, a multiple drive shaft arrangement having intermediate shaft support bearings is recommended.

This type of arrangement is especially recommended for high speed applications whereby effective lengths exceed 70 inches and riveshaft balance is critical to the drive or driven member.

We could supply products by customization, just as Size, Marking, Packing, Color, Tolerance etc..

Please send your drawing, picture or other detail information to us.