Belts for turntables
Flat belts made of silicone with improved geometry reduce slippage, synchronization fluctuations and vibrations.
For a longer service life, free of harmful substances and in proven dimensions.
choose your turntable here
Siemens RW 150
made of silicone in one piece
premium quality made in Germany
Article ID: TT_101050_B
in stock, shipping immediately
Can a belt sound better?
After the running-in period, the smoother running of the turntable is noticeable.
The bearings work more quietly due to the lower lateral load, vibrations and noises from the drive motor are better damped.
But an even more important improvement results from smoother running.
Therefore, wow and flutter measurements were carried out on a Thorens TD125.
This refers to the speed fluctuations during the playback of analogue sound carriers such as records.
Synchronisation fluctuations make the music sound discontinuous or washed out.
A recorded 1-kHz sound with small synchronisation fluctuations (approx. 0.1%) will sound undistorted in an acoustically dead recording studio,
but in a normal listening room such fluctuations are audible.
The current tone will meet its echo, which has a slightly different pitch (Doppler effect).
What can be heard are amplitude fluctuations, to which the ear is very sensitive.
A synchronous fluctuation from 0.1% is perceptible, even though the hi-fi standard DIN 45500 allows up to 0.2%.
A memory of the spatial position due to earlier reflections is disturbed.
Source: en.m.wikipedia.org/wiki/Wow_and_flutter_measurement (englisch)
Opinions: pinkfishmedia.net/forum/threads/today-i-am-a-small-blue-thing (englisch)
Example Thorens TD125
Sintered bearing oil
High-purity sintered bearing oil with viscosity 50 for turntables, tape recorders and CD players.
Fully synthetic, produced without mineral oils, free of resinification and can also be used on plastics.
The 5ml bottle (new size) with micro-dosing needle allows the smallest dosing quantities.
Flat belt calculator
If a model is not listed yet, we will be happy to catch up.
For a new belt, the optimum dimensions should first be determined.
Dimensions of old belts of black butyl rubber differ.
Learn more about our calculator at tec-science.com:
load on bearing
Vary with the measurements when entering them into the calculator and observe the changes in the result to get a feel for the accuracy required in your measurements.
Proper pretensioning of a belt avoids slippage without increasing the lateral bearing load.
The optimum tension is determined on the free-hanging part of the belt (the trum length) based on its vibration frequency.
This is influenced by the weight of the platter and the resulting elongation in the tension strand of the belt.
In addition, the length of the run, the longer the run, the lower the vibration frequency, if the percentage pretension of the belt remains unchanged.
And also the motor speed, which is given by the transmission ratio between pulley and platter and is related to the contact area of the belt on the pulley.
The greater the transmission ratio, the smaller the contact surface on the pulley that pulls the belt.
These factors are calculated on the properties of the silicone we use.
Therefore, the dimensions cannot be compared with black belts made of butyl rubber.
Belts made of butyl rubber can be recognized by the fact that they are often advertised with terms such as fine or precision ground.
Since these belts are cut and glued from a flat material, grinding is necessary to avoid thickening.
Butyl rubber is also at a disadvantage compared to silicone in the linking of the molecular chains (cross-linking), which determine the stretchability and resilience and are responsible for the rapid wear of these belts.
In addition to the higher resistance to environmental influences of silicone, belts made of butyl rubber can be considered obsolete in material properties and in the method of manufacture.
Example Thorens TD124
Belt list turntables
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