Post By GrahamK
Post By zahaby
Post By chokkidog
Post By chokkidog
What are the differences between Toper TKMX and TKMSX models ?
What are the differences between Toper TKMX and TKMSX roasters ?
And what is the material of Toper TKMX drum ? is it stainless-steel of cast-iron ?
According to the interweb:
Toper Shop Type Coffee Roasting Machine
TKM-SX Series Advanced technologies and digital roasting
SX is the “super series” of the world-famous X model of Toper to which modern technology and high capacity options are added. SX series roasters have 4 alternative models with capacity options of 10 - 90 kgs/h.
Equipped with digital control panel, TKM-SX series super roasters are both compatible with computerized Profile Roasting System and advanced control and support options like automatic feeding.
While I do not know for certain regarding stainless vs cast-iron, and someone with Toper experience would have a more definitive answer, I doubt stainless steel would be used in professional thermal transfer style roasters. Stainless steel is not one of the better thermal conductors.
Last edited by GrahamK; 18th November 2018 at 12:20 PM.
Thanks very much Graham
More info and model range of the differences between X and SX can be found here Toper TKMSX Model Shop Roasters Turkey Beverage Processing Machinery
Toper use carbon steel for their drum manufacturing. SS is uncommon in big roasters but Brambati and Mill City, for example, use SS drums in their commercial roasters and there are a few home roasting devices using SS.
There are full cast iron drums and double walled cast iron with an outer, cast, drum and inner drum of steel. Some cast iron roasters have only the end plates and drum yoke of cast iron.
Some manufacturers are playing around with a layer of copper sandwiched between steel layers for the drum ( Ghibli for one).
Last edited by chokkidog; 18th November 2018 at 01:42 PM.
Thanks very much Chokkidog,
Another question please, What are the differences between carbon-steel , cast-iron and SS drum ? and which is better ?
Carbon steel has a much higher thermal conductivity compared to stainless steel. ( CS-54, SS-26)
SS drums use 430SS the most common type which has the following properties :
The practical differences between the two? Carbon steel is cheaper to produce and easier to heat and cool but has low latent heat retention, stainless requires more energy
to heat up but higher latent heat retention. In roasting terms, this might suggest it's easier to control the response of carbon steel to heat inputs but that stainless steel
might behave more like cast iron than what carbon steel does, by functioning as a heat bank.
There is no real advantage of any drum material over another outside of cost, each has their pros and cons and each requires particular application of knowledge to make it perform.
As far as measurable results go... all types of drum materials have featured in recent years, by winning roasters, in the Golden Bean Overall Champion Australian Roaster award.
It just goes to show... it's not how big it is .... it's how you use it that counts.
Thanks very much again for all the valuable information ...