Contact Angle, Surface Interface Tools

Friction Tester

Triboster TSf series

The Triboster TSf series, consisting of two different models, is designed for computer-controlled analysis of the static and kinetic coefficient of friction (COF). The versatile models with a linear reciprocating sample stage can be used for all kinds of samples with different shapes, due to sample holders which are specially designed according to the sample. Both models feature the unique patented crank-shaped biaxial balance technology for accurate and reliable measurements.

Measurements with different loads, speeds, contact probe geometries, and measurement methods, as well as options, allow customers to set up the instruments to meet their special needs.


Biaxial balance technology

  • Minimization of the effects of inertia and other external forces to the load cell during the measurements, ensuring exact and reliable results.


  • Measurement of the coefficients of friction in both ways of stage travel.

Automatic contact probe lift-up function

  • Measurement of the coefficients of friction in only one way of stage travel. The contact probe is lifted automatically after one stroke to avoid contact with the sample when the stage returns.

Up to seven measuring routines

Depending on the Triboster model, a variety of different measuring routines are available to ensure the most possible flexibility in determining specific characteristics of the samples. Available measuring routines are:

  • Standard repetition: Measuring the coefficients of friction repeatedly on the same measuring area in up to 12 cycles
  • Continuous static friction: Measuring up to 50 data of coefficients of static friction in one stroke by the stop-and-go movement of the stage
  • Repetition dependency: Measuring the coefficients of friction repeatedly on the same measuring area in 100 to 10.000 cycles
  • Multi-sample: Measuring the coefficients of friction for different samples or different areas for one sample for easy comparison
  • Load-dependency: Measuring the coefficients of friction depending on different normal loads
  • Speed-dependency: Measuring the coefficients of friction depending on different speeds
  • Time-interval dependency: Analyzing the influence of adhesion to the coefficients of friction depending on up to 4 different contact times in one way, by use of the counterpart lift-up function and the stop-and-go movement of the stage


  • Heater type temperature-controlled sample stage for measurements from ambient to +180℃
  • Jacket type temperature-controlled sample stage for measurements from +10 to +70℃
  • A wide variety of contact probes with different geometries
  • Different weights in the range from 50 to 2000g
  • Special holder for measurements of pencils

Lubrication oil

  • Friction, wear-resistance, and longevity of oil lubricated metallic surfaces
  • Dependence of friction on temperature


  • Longevity and peel resistance of manicures
  • The smoothness of hair before and after treatment with hairdressing
  • The friction of surfaces from production machines, to improve flow properties of powders and to prevent powder adhesion


  • Functionality and effectiveness of powder lubricants


  • The durability of and damage to papers or the surfaces of printing media during the printing process
  • Friction between paper sheets to each other, and between paper sheets and each part of the printer’s paper feed mechanism for its optimization

Rubbers & Plastics

  • Friction and wear of tires against road surfaces
  • Stick-slip-effect between wiper blades and wet windshields
  • Functionality and persistence rubbers for table tennis rackets
  • Durability and functionality of the rubber surface of paper-feed or pick-up rollers


  • Smoothness depending on textile weave pattern
  • The efficiency of softening and smoothening agents on textiles
  • Slippage of different kinds of fabrics on each other
  • Slippage of stockings on insoles

Paints & Coatings

  • The strength of plating layers and coated surfaces against scratching, continuous rubbing, sliding, etc.
  • Friction and wear of coated surfaces against each other


  • The friction of materials from artificial joints, valves of artificial hearts and implants
  • The friction of catheters submerged in water and the durability of the catheter’s coatings.


  • Extensibility of car polish or wax on the car body and their effectiveness after drying
  • Sliding characteristics between clothing fabrics and seat belts and car seats materials
  TSf series
Measuring mode linear reciprocating
Display resolution coefficient of friction: 0.0001
Friction force range standard: 0 to 1000gf (9.8N), option: 0 to 2.000gf (19.6N)
Normal load range

standard: 100 to 1.000g (in steps of 50g)
optional:  200 to 2.000g (in steps of 100g)
Stage travel distance 1 to 80mm (in steps of 1mm)
Stage travel speed 0.1 to 100mm/sec
Stage travel cycles

TSf-503: max 10.000

TSf-303: max 12
Measuring routines

TSf-503: - standard repetition
               - continuous static friction
               - repetition dependency
               - multi-sample
               - load-dependency
               - speed-dependency
               - time-interval dependency

TSf-303: - standard repetition
Maximum sample size 180x100x30mm
Sample stage size 180x100mm
Measuring temperature

standard: ambient
optional:  jacket type: +10 to +70℃
               heater stage: ambient to +180℃
Instrument dimensions 310x600x420mm
Approximately weight 29.0kg
Electric power:
Power consumption

50/60 Hz
60W 125VA
Operating environment

temperature: +10 to +35℃, humidity: 30-80%RH (non-condensing)
positioned away from sources of electrical noise and vibration



Functions and measurement routines

For more detailed information please Contact Us.

Automatic contact probe lift-up function

Used for measurements of the static and kinetic coefficients of friction in only one direction (one-way-measurement).

Continuous static friction

Used for measurements with the focus on static friction, generally measured with slow speeds up to 1.0mm/s.

Time-interval dependency

Used to evaluate the influence of adhesion between the sample and the contact probe or attached specimen.