1. Introduction

• • Using locking assemblies can make the manufacturing and installation of main engine parts easy. The processing of shaft and hub for installing locking assemblies does not like shrink fit which needs high accuracy manufacturing tolerance. When install locking assemblies, we do not need heating , cooling , or compression device.We only need to tighten bolts according to the requirement torque. Its adjustment is convenient and we can adjust hub to the location needed on the shaft. Locking assemblies also can be used to couple parts which welding performance is poor.
• • The life length of locking assemblies is long and its strength is high.Locking assemblies depend on friction to transmit and no key slot weakens for coupled parts.It also has no relative motion. It can not bring abrasion during working.
• • When locking assemblies are over loading , it will lose coupling effect.It can prevent device from damage.
• • The coupling of locking assemblies can endure multiple loads.Its structure can be made to many types.We also can use many locking assemblies in series according to installed loading.
• • The dismantle of locking assembly is conventient and it has good interchangeability.Because locking assemblies can couple hubs which have larger fit clearance, only tightening bolts can dismount coupled parts when dismantle.When locking , tight coupling can make contact face non-rust and the dismounting is convenient.

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• Applying Scene

Locking assemblies Z4 type is comprised by different taper open biconical inner ring ，open biconical outer ring and two biconical clamp rings .Use hexagon socket head cap screw to tighten. Compared with Z2 type ，its junction surface is long and centering precision is high . It applies to situations where rotating precision is high and transmissible load is large.

1. 
   Outline Dimension