Aluminum Flexible Coupling Coupler Helical Shaft 5mm x 8mm

(6 customer reviews)

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SKU: 12084
  1. Material: Aluminium.
  2. Bore Diameter d1: 5 MM.
  3. Bore Diameter d2: 8 MM.
  4. Torsional stiffness: Zero backlash
  5. One piece construction

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Brand: Generic
Category: 3D Printer Coupling, Best Prices
Tags: Motor Coupling, Flexible Coupling, 5x8 Coupling

This is a Aluminum Flexible Coupling Coupler Helical Shaft 5mm x 8mm.

This flexible type motor coupling can connect your driving shaft with the driven shaft while it is very efficient in eliminating any misalignment to the possible extent. Minimum backlash is another great advantage of this Aluminum Flexible Coupling Coupler Helical Shaft 5mm x 8mm.

This Flexible coupling with the outer diameter of 19mm and the length of 25mm is machined aluminum coupling.

First bore diameter is 5mm and the second bore diameter is of 8mm also.

It comes with the spiral cut in the middle along its length which makes it flexible so they can be fit to two shafts even if they are not perfectly co-linear and will help reduce binding effects. Such couplings are also known as Beam coupling, helical coupling, Flexible coupling.

Some of the important features of flexible shaft coupling are,

  1. Helical cut makes them behave like a springy in the X Y and Z linear axis but not in the rotational axis. That means that you won’t get more backlash, hence they are suitable for precision CNC work.
  2. A coupling is a device which transmits power and torque. Couplings do not normally allow disconnection of shafts during operation. However, there are torque limiting couplings which can slip or disconnect when some torque limit exceeds.
  3. By careful selection, installation and maintenance of couplings, substantial savings are possible in reduced maintenance costs and downtime.
  4. It can protect the driving and driven shaft members against harmful effects because of misalignment of the shafts, sudden shock loads, shaft expansion or vibrations etc.

Note: We also provide EasyMech Couplings which are Robu.ins new branded coupling, don’t forget to check for future use.

Motor Coupling

Features :

  1. Corrosion resistance and High Durability
  2. One piece construction with long-lasting performance
  3. Torsional stiffness: Zero backlash
  4. Low moment of inertia offering constant velocity

Package Includes :

1 x Aluminum Flexible Coupling Coupler Helical Shaft 5mm x 8mm.

Item Type:

Flexible Shaft Coupling



Bore Diameter (mm)

5 x 8

Length (mm):


Outer Diameter (OD) (mm)



4 x M3

Weight (g):


Shipping Weight 0.018 kg
Shipping Dimensions 3 × 2 × 1 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

Based on 6 reviews

5.0 overall

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  1. Dhruv Mamtora (verified owner)

    Good Product

    Dhruv Mamtora

  2. Kedar

    The product is flawless. I expected it to be bit heavier but nevertheless its a good product. The problem is, I am using 8mm lead screw so 8mm coupler is not the right choice, I will now go for 10mm coupler. I thing same should be true for motor shaft.


  3. Sumit Singh Anand (verified owner)

    No problem but flash on the top round wall.

    Sumit Singh Anand

  4. Sachin Bhangale (verified owner)

    Good quality

    Sachin Bhangale

  5. Abhay (verified owner)

    Good quality and also low price!!


  6. muhammed p (verified owner)

    accurate mechanical boring , good for the purpose , also price too attractive!!!

    muhammed p


Questions and answers of the customers

  1. 0 votes
    Q I need cad model for this components how to get it answer now
    Asked by esakinit on July 4, 2023 4:49 pm

    Sorry CAD diagram is not available 

  2. 0 votes
    Q Are there locking screws with this coupling?
    Asked by soumilbanik6 on January 19, 2023 2:13 am
    There are no answers for this question yet. Answer now
Only registered users are eligible to enter questions
Country Of Origin: China

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