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TE 88 MULTI-STATION FRICTION & WEAR TEST MACHINE

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TE 88 MULTI-STATION FRICTION & WEAR TEST

MACHINE

Background

The TE 88 Multi-Station Friction and Wear Test Machine is design for wear testing of materials

under high contact pressures in pin on disc, block on ring or reciprocating pin on plate modes.

In reciprocating mode the machine can perform tests in the ASTM F 732 geometry, in Pin on

Disc mode according to ASTM G 99, and in Block on Ring Mode according to ASTM G 77. The

machine may be supplied with one, two and three Pin on Disc, Block on Ring or Reciprocating

Pin on Plate test stations. It incorporates an integrated SUPERSLIM Serial Link Interface Module

and COMPEND 2000software running on a host PC.

TE 88/BU Base Unit

The base unit comprises an a.c. variable speed gear-motor and a control and data acquisition

system. These are transferred between the Pin on Disc, Block on Ring and Pin on Plate modules,

depending on the tests configurations required.

TE 88/LFW Load/Friction/Wear Measurement Assembly

For each test station installed, a load/friction/wear assembly is required. These are transferred

between the Pin on Disc, Block on Ring and Pin on Plate modules, depending on the tests

configurations required.

The loading beam is pivoted at one end and a pneumatic bellows is used to apply a load at the

other end. The bellows system presents a constant inertial stiffness over the whole load range

and thereby reduces the inertia effects on test data. A force transducer mounted on the bellows

allows the applied load to be measured. Load is adjusted by means of a manually set precision

regulator.

The load beam pivot is trunnion mounted and restrained from movement, when in the

horizontal position, by pads mounted on the load application bracket. A strain gauge force

transducer mounts on the load beam and fits between these pads when the arm is horizontal

thus allowing the friction signal to be sensed.

The transducer output connects to a strain gauge amplifier module and the output from this

may be connected direct to the interface for uni-directional friction measurements (pin on disc

and block on ring tests). The output may also be passed through a true rms/dc converter and

then connected to the interface to give averaged friction readings in reciprocating pin on plate

mode.

An LVDT is mounted in contact with the underside of the load beam. As the pin or block wears,

the vertical movement of the load beam is detected by the transducer. Wear of up to 1.5 mm at

the contact can be measured. The LVDT is self-powered and plugs directly into the interface.

TE 88/R Reciprocating Pin on Plate Module

The TE 88/R module can accommodate up to three test stations. Flat plate specimens are

mounted in a reservoir to retain lubricating fluid with a lid to avoid spillage and reduce

evaporation during long-term tests. Each station is fitted with electrical heating (for

temperatures up to 400°C) and a thermocouple. The reservoirs are mounted on a common

plate, which is located by ball bushings on a linear bearing assembly. The plate is reciprocated

by variable throw crank.

TE 88/P Pin on Disc Module

The TE 88/P module can accommodate up to three pin on disc test stations. A heated non-

rotating fluid enclosure is provided with each test station allowing tests to be performed in fluid

environments with a temperature limit of 200°C. A lid is provided to minimise fluid splashing. A

thermocouple is fitted to the lower part of the enclosure to monitor and control the

temperature.

TE 88/B Block on Ring Module

The TE 88/B module can accommodate up to three test stations. The ring specimen is mounted

on a horizontal test shaft. Test may be performed under ambient conditions.

TE 88/TW Thrust Washer Test Adapter

TE 88/TW adapted is used in conjunction with the TE 88/P Pin on Disc Module and allows tests

to be performed using thrust washer test specimens in accordance with ASTM D3702. A force

transducer is included for measurement of torque.

TE 88/HT High Temperature Pin on Disc Test Adapter

An optional higher temperature air heating system TE 88/HT is available for use with ONE

station of Pin on Disc module only. The TE 88/P heated fluid enclosure is replaced by a stainless

steel enclosure with inlet and outlet ports.

Hot air from a electrically heated blower unit is then directed into the inlet port and a chimney

directs the exhaust upwards from the outlet port. The temperature of the disc specimen is

measured using an optical pyrometer.

Control and Data Acquisition

The TE 88 has PC based sequence programmable control and data acquisition. This is provided

by an integrated Serial Link Interface Module and COMPEND 2000 software running on a host

PC, operating under Windows. Data is stored to hard disc in standard spread sheet compatible

file formats (.csv or .tsv).

Tests are defined by a sequence of steps, each step containing set-point, data recording rates

and alarm level information. Set-points may be adjusted by step change or ramp. The test

sequence is followed unless interrupted by the operator or an alarm. Set-points may also be

adjusted manually using on screen toggles.

Purchasing Examples

ONE Station Pin on Disc, Block on Ring, Reciprocating Pin on Plate Machine with Wear

Transducer:

TE 88/BU Base Unit

TE 88/LFW Load/Friction Measurement Assembly

TE 88/R-1 Reciprocating Pin on Plate Module

TE 88/P-1 Pin on Disc Module

TE 88/B-1 Block on Ring Module

THREE Station Reciprocating Pin on Plate Machine:

TE 88/BU Base Unit

TE 88/LFW Load/Friction Measurement Assembly

TE 88/LFW Load/Friction Measurement Assembly

TE 88/LFW Load/Friction Measurement Assembly

TE 88/R-3 Reciprocating Pin on Plate Module – Three Test Stations

ONE Station High Temperature Pin on Disc Machine:

TE 88/BU Base Unit

TE 88/LFW Load/Friction Measurement Assembly

TE 88/P-1 Pin on Disc Module – One Test Station

TE 88/HT High Temperature Pin on Disc Test Adapter

TE 88 MULTI-STATION FRICTION & WEAR TEST MACHINE

Technical Specifications

TE 88 Base UnitInterface: Serial Link Interface ModuleSoftware: COMPEND 2000Motor: 2.2 kW ac

TE 88/LFW Load/Friction Measurement AssemblyNormal Load: 10 to 1,000NSignal Conditioning: Strain Gauge Amplifier ModuleFriction Force Range: 500 NSignal Conditioning: Strain Gauge Amplifier Module

RMS/DC Converter ModuleWear: LVDTRange: 1.5 mmResolution: 1 µmSpecimen Holder: 8 mm and 5.5 mm diameter pinsOptional Holders: 10 mm and 6 mm diameter balls

TE 88/R Reciprocating Pin on Plate ModuleContact Configurations: Pin on Plate

Ball on PlateNumber of Stations: ThreeTemperature Range: Ambient to 400°CHeating Power: 800 WTemperature sensor: k-type thermocoupleStroke/Frequency: Up to 25 mm at 2 Hz

Up to 50 mm at 1 Hz

TE 88/P Pin on Disc ModuleContact Configurations: Pin on Disc

Ball on DiscOptional Configuration: Thrust WasherNumber of Stations: One, Two or ThreeDisc Diameter: 75 mmTrack Radius: 0 to 35 mmFluid Temperature: Ambient to 200°CHeating Power: 800 WTemperature sensor: k-type thermocoupleRotation Speed: 30 to 1,000 rpmSliding Velocity: 0.12 to 4 m/s

TE 88/B Block on Ring ModuleContact Configurations: Block on Ring

Ball on RingNumber of Stations: One, Two or ThreeRing Diameter: 80 mmRotation Speed: 30 to 1,000 rpm

TE 88/TW Thrust Washer Test AdaptersThrust Washer: 1.125 inch O/D according to ASTM D 3702

2 inch O/D according to ASTM D 3702

TE 88/HT High Temperature Pin on Disc Test AdapterTemperature Range: up to 400°CAir Heating Power: 2.8 kWTemperature sensing: Optical Pyrometer

Automatically Controlled Parameters Rotational Speed

Test Duration

Manually Controlled Parameters Load

Measured Parameters Friction

Load

TemperatureWearRotational SpeedNumber of RevolutionsTest DurationSliding SpeedOscillating FrequencyFriction CoefficientSliding Distance

ServicesElectricity: 220/240V, single phase, 50 Hz, 3 kW

110/120 V, single phase, 60 Hz, 3 kWClean, dry air: 4 cfm at 8 bar (120 psi)

InstallationBench-mounting machine: 1,300 x 720 x 850 mm high, 250 kgBench-mounting cabinet: 530 x 530 x 350 mm high, 40 kgPacking Specifications: 1.25 m

3, GW 271 kg, NW 193 kg