What should be the appropriate distance between the coupling pulleys?

The axial clearance between the two end faces of the coupling is generally 2 to 6 mm.

The axial clearance between the two end surfaces of the coupling is generally 2–6 mm

Different types of couplings have varying requirements; standards such as SH/T3538 and HG20203 specify the alignment requirements for couplings

It is generally 2 to 4 mm, which is one thousandth of the outer diameter of the coupling

The answer is different; I heard someone say it’s 1-5mm

Different types of couplings have different requirements; don’t the manufacturers provide you with instruction manuals?

1. It is related to the type of coupling; different couplings have different requirements. For specific details, refer to GB50231, SH/T3538, and HG20203； 2. Check whether the coupling has an intermediate section; generally, coupling types with elastic diaphragms do not have any issue with gaps, as they are fully connected. However, during assembly, a gap of around 5 MM must be left depending on the specifications, in order to create pre-tension that helps absorb vibrations. Domestic products are represented by Wuxi Chuangming’s products ； 3. For toothed and rigid couplings, the clearance must be set strictly in accordance with the instructions provided by the manufacturer. The performance of products from different manufacturers varies; I encountered a mixer whose toothed coupling had an excessively small assembly clearance at the time of manufacture, which resulted in severe vibration and excessive load on the motor. (The coupling was of foreign origin, but it was assembled following the general requirements for domestic products, which led to the aforementioned problems.) This post was last edited by zhanong on 2009-3-9 18:31]

Different couplings have different requirements; please refer to the standards

The axial clearance between the two end faces of the coupling is generally 2 to 6 mm. This is usually the number

The coupling we are using now is from Wuxi Chuangming, model TD6-523. If the wheel spacing is 2~6 mm, it’s probably too small! ! ! This post was last edited by §FeiXiong§ on 2009-3-10 12:16.]

Excuse me, do you have these standards? I searched on the forum but couldn’t find them. Could you share them with me?

Different types of couplings have varying requirements. Generally, we require that there be no more than 10 steps

There is no fixed standard depending on the model and performance of different couplings, but generally 3-5 threads is a suitable range

I found an empirical formula for elastic diaphragm couplings: pitch between the pulleys = sheet thickness 1 + sheet thickness 2 + length of the extended section + 0–0.4 mm. I wonder if this is feasible in practical applications?

Different types of couplings have different requirements; generally, 2~4 MM is required.

The shaft exhibits radial movement and axial play during operation; the spacing between couplings is generally 2-4 mm

I wonder what type of coupling you are using, and what is the rotational speed?

According to direct measurements, but it is usually 2-4MM