COF Tester / Coefficient of friction tester / Peel tester
![Friction Peel](https://www.rycobel.com/assets/uploads/site/images/_767xAUTO_fit_center-center_80_none/friction-peel.jpg)
The friction coefficient or COF is a number that indicates the degree of friction between two surfaces.
A distinction is made between static friction coefficient and the dynamic friction coefficient. The static coefficient of friction is the ratio between the maximum friction force before the surfaces start to move in relation to each other and the normal force.
The dynamic coefficient of friction is the ratio between the frictional force and the normal force as the surfaces move relative to each other already.
Coefficient of Friction Testing Equipment
![Fp2255 Cof](https://www.rycobel.com/assets/uploads/site/products/friction-peel-tester-reibungsprüfgerät/_767xAUTO_fit_center-center_80_none/FP2255_COF_2022-01-25-140129_lntq.jpg)
FP-2260 Friction/Peel tester - Coefficient of friction tester (COF)
Application: paper & pulp, cardboard
Property: adhesion & tack, coefficient of friction testing, seal strength
![Htm](https://www.rycobel.com/assets/uploads/site/products/horizontale-zugprüfung-zugprüfmaschine-horizontal/_767xAUTO_fit_center-center_80_none/HTM.png)
Horizontal tensile machine
Application: paper & pulp, cardboard
Property: coefficient of friction testing, tensile - universal testing machine (utm)
![Coefficientof Friction RL COF B](https://www.rycobel.com/assets/uploads/site/products/rycolab-coefficient-of-friction-tester-cof-tester-2/_767xAUTO_fit_center-center_80_none/CoefficientofFriction_RL-COF-B.jpg)
Rycolab Coefficient of Friction Tester - COF Tester
Application: paper & pulp, cardboard
Property: coefficient of friction testing
![Inclined Plane COF Tester RL COF A](https://www.rycobel.com/assets/uploads/site/products/rycolab-reibungspruefgeraete-cof-tester-inclined-plane/_767xAUTO_fit_center-center_80_none/Inclined-Plane-COF-Tester_RL-COF-A.jpg)
Rycolab Inclined Surface Coefficient Of Friction Tester
Application: paper & pulp, cardboard
Property: coefficient of friction testing
COF Sleds
![Cof sled standard 2](https://www.rycobel.com/assets/uploads/site/products/cof-sled/_767xAUTO_fit_center-center_80_none/cof_sled_standard_2.jpg)
COF Sled
Application: cof sleds
Property: coefficient of friction testing
![Cof sled spring 1 3](https://www.rycobel.com/assets/uploads/site/products/spring-cof-sled/_767xAUTO_fit_center-center_80_none/cof_sled_spring_1_3.jpg)
Spring COF Sled
Application: cof sleds
Property: coefficient of friction testing
![Heatedcofsled](https://www.rycobel.com/assets/uploads/site/products/heated-platen-cof-sleds/_767xAUTO_fit_center-center_80_none/heatedcofsled.jpg)
Heated Platen COF Sleds
Application: cof sleds
Property: coefficient of friction testing
![Sled open 1](https://www.rycobel.com/assets/uploads/site/products/ez-sled-for-cof-testing/_767xAUTO_fit_center-center_80_none/sled_open_1.jpg)
EZ-Sled for COF Testing
Application: cof sleds
Property: coefficient of friction testing
![3ball sed](https://www.rycobel.com/assets/uploads/site/products/self-adjusting-sled-for-cof/_767xAUTO_fit_center-center_80_none/3ball_sed.jpg)
Self Adjusting Sled for COF
Application: cof sleds
Property: coefficient of friction testing