Other Component Testing

Component testing of piston rings, brakes, clutches, slip rings and other machine elements, on component rigs or in model tests that reproduce their real contact conditions.

  • Friction monitoring

    Floating liner-type friction measuring technique

  • Rotational velocity

    Up to 2200 rpm

  • Stroke length

    Maximum 90 millimeters

  • Temperature control

    Heated oil and cylinder liner up to 80°C

Piston ring – cylinder liner tribometer setup
Piston ring – cylinder liner tribometer setup
Schematic of the piston ring – cylinder liner test

Component tests in our network

We choose the setup that matches your component. Bearings, gears and seals have their own pages: see bearing testing, gear testing and seal testing.

Test setupWhat it showsStandard
Piston ring – cylinder liner tribometerFriction of piston ring and cylinder liner in a full component setup–
Brake tribometer (double pin-on-disc)Friction and wear of brake material pairs–
Wet clutch test rigFriction and wear of wet clutch friction materials–
Slip ring test rigSlip rings and sliding electrical contacts under realistic operating conditions–
Ring-on-ring friction rigsDrive and friction elements with liquid media at different temperatures–
Oscillating (SRV-type) tribometersModel tests of brake fluids, synchronizers and other component contactsDIN 51834-5, ASTM D8227

What we measure

  • Friction, recorded during the test
  • Wear of the component surfaces
  • Temperature and, for electrical contacts, contact resistance
  • Surfaces after the test, with 3D surface topography and SEM/EDX

Key component test standards

These are the methods most often used in this field. Where no standard fits your application, we propose a test closer to your operating conditions. Search all standards in our test standards finder.

Piston ring and cylinder liner

StandardTestWhat it measures
ASTM G181Piston ring and cylinder liner friction testLubricated friction of ring and liner materials
ASTM G206Guide: wear volume of piston ring segmentsWear volume of ring segments tested against flat coupons

Engine tests for lubricant qualification

StandardTestWhat it measures
ASTM D8111Sequence IIIHOil thickening, piston deposits and ring sticking at high temperature
ASTM D6891Sequence IVACamshaft lobe wear
ASTM D8256Sequence VHLow-temperature sludge and varnish
ASTM D8226Sequence VIFEffect of engine oil on fuel economy
ASTM D8279Sequence XTiming chain wear (elongation)
ASTM D7549Caterpillar C13Piston deposits, ring sticking and oil consumption
ASTM D5966Roller follower wear, light-duty diesel engineWear of roller follower axles
ASTM D7422Mack T-12Piston ring and liner wear and lead corrosion in an EGR diesel engine
ASTM D7484Cummins ISBValve train wear (crossheads and camshaft)

Hydraulic pumps

StandardTestWhat it measures
ISO 20763Vane pump test of hydraulic fluidsAnti-wear properties of hydraulic fluids
ASTM D7043Constant volume vane pump testPump wear with petroleum and non-petroleum hydraulic fluids
ASTM D6973High-pressure vane pump testPump wear with petroleum hydraulic fluids

Transmissions and brakes

StandardTestWhat it measures
ASTM D8227SRV synchronizer testFriction of transmission fluids against synchronizer materials
ISO 4925Brake fluidsSpecification and test methods for brake and clutch fluids
DIN 51834-5SRV brake fluid testFriction-induced noise of brake fluids in an EPDM–metal contact
SAE J2522Inertia dynamometer brake effectiveness testFriction coefficient of disc and drum brake materials
JASO T903Four-stroke motorcycle oil specificationWet clutch friction of motorcycle engine oils

Industries

  • Automotive: engines, transmissions, clutches and brakes
  • Railway: wheel–rail contact and flange lubrication

One contact, the whole European network

i-TRIBOMAT is the single entry point to more than 130 tribometers and more than 250 experts across Europe. You do not need to find, compare and coordinate several laboratories: we do it for you.

  • One contact and one offer for the whole programme
  • Independent choice of setup: we match your application to the right test, not to the equipment we happen to own
  • One consistent report and, on request, your results in your own online database (see Data-Driven Services)
  • Confidentiality covered by a single agreement

Frequently asked questions

Can you test my own component?

Often yes, depending on its size and the available rigs. Send us a drawing and your operating conditions and we will tell you which test is possible.

Component test or model test?

A model test on a tribometer is faster and cheaper and is good for ranking materials and lubricants. A component test confirms the result under real conditions. We often combine both.

How do I start?

Send us a short description of the component, the lubricant and the operating conditions, and the question you want answered. We reply with a test proposal and an offer.

Or write to office@i-tribomat.eu. See also all tribological characterisation services.