## ProductsConnecting Shaft(Line Shaft)

line shaft, distance coupling, connection coupling, longtype coupling, hollow shaft, hollow shaft connection coupling, lined shaft, lengthy coupling, lengthy shaft coupling, ISO 9001, ISO 14001, Korean made components, IT components, mechanical components, motion components,motion accessories, motion control, motion control components, semi conductor components, display machine components, small sized machine components, small mechanical components, machine components, factory automation part

Connecting shaft is a compact solution which enables to transmit
motion accurately, especially when there is a longer distance
between shafts of an application.

• Why Connecting Shaft?
• How to determine the proper length(L)
• How to calculate permissible parallel misalignment
• How to calculate Torsional Stiffness

### Product Overview

#### Why Connecting Shaft?

How to transmit motion when there is a longer distance between the shafts?

It is recommended to use a connecting shaft rather than a coupling + ground shaft combination.

##### Combined set of coupling + Ground shaft
• 3 different parts (2 Couplings, 1 ground shaft) are separately needed.
• Bigger laboring required
• Hard to keep the appropriate straightness
between couplings each end and
a ground shaft
##### Connecting Shaft
• 1 Whole piece structure
• Simple installation
• Easy and handy maintenance
• The hollow shaft with high stiffness

#### How to determine the proper length(L)

##### General Side-clamp Type L(Total Length)= Ls(distance between shafts)+ 2L1

##### Side-clamp Hub Split Type L(Total Length)= Ls(distance between shafts)+ 2L3

Side-clamp Hub Split type is commonly used for connecting shaft in regards to an easier maintenance.

#### How to calculate permissible parallel misalignment ${P}_{m}=\left(L-2\left({L}_{1}+{L}_{2}\right)\right)×\mathrm{tan}\frac{{A}_{m}}{2}$
• Pm = Permissible parallel misalignment
• L = Total length
• Am = Permissible angular misalignment of connecting shaft
(= 2 x coupling’s value)
• The value calculated by the above formula is maximum permissible parallel misalignment in the allowable range of motion transmission, which means sleeves of SJCL and plate spring of SHDL may still get worn down even within the range of permissible parallel misalignment.
• The Pm value shrinks by ½ when there are both angular and parallel misalignment at the same time.
• It is recommended to use at the ⅓ value of Pm for longer lifespan, as well as keep the shafts located in line as straight as possible.
$T{S}_{L}=\frac{1}{2×\frac{1}{T{S}_{c}}+\frac{{L}_{pipe}}{T{S}_{s}}}$ (N·m/rad)
• Lpipe = Length of Pipe [ ${L}_{pipe}=\frac{L-2{L}_{4}}{1000}$ (m)]