RTM Friction Tester (Tire)

RTM Friction Tester (Tire)

(2 đánh giá)

Model: FR-7225

Ueshima - Japan

12 months

FR-7225 RTM Friction Tester enables to evaluate friction characteristics of tire tread compound on material testing basis, and can be tested in Dry, Wet, Ice conditions on ring shaped road surface. Test is performed by pressing specimen on constantly rotating ring shaped wheel at free rolling condition, or with slip ratio applied in 0 to +/- 95% range and measuring the friction force. Also, max. 30deg. slip angle can be applied on the specimen against it’s tangential line.

FEATURES                                                                         

Friction test at Dry, Wet, Ice conditions can be performed with one equipment.

Traction (Acceleration, Braking) test changing slip ratio during 1 test can be performed.

Friction force(Rolling Resistance) Measurement at free rolling condition can be performed.

Max. 30deg. slip angle can be applied between sample and test road. (Automatic setting)

Specimen taken from actual tire tread can be glued on the sample for testing.

Chamber and water temperature can be controlled individually.

Ice road surface can be made in the test chamber.

 OUTLINE      
RTM Friction Tester enables to evaluate friction characteristics of tire tread compound on material testing basis, and can be tested in Dry, Wet, Ice conditions on ring shaped road surface. Test is performed by pressing specimen on constantly rotating ring shaped wheel at free rolling condition, or with slip ratio applied in 0 to +/- 95% range and measuring the friction force. Also, max. 30deg. slip angle can be applied on the specimen against it’s tangential line.

TEST CONDITIONS                            

Road condition (Dry, Wet, Ice)

Slip ratio (road based)

Load

Speed

Temperature chamber, water temperature

APPLICATIONS                           

Traction (Acceleration, Braking)Measurement

Rolling Resistance Measurement

Cornering Force Measurement

 

SOFTWARE FUNCTIONS                            

Test condition setup and test start command

Making a µ-S curve by data acquisition

Making a Torque-Time curve by a free-rolling test

Making a Fy-Time curve by a free-rolling test

Making a µ-Time curve in a constant slip ratio test

Specification

Name

RTM Friction Tester

Model

FR-7225

Sample

Columnar shape   Dia.80mm, W16mm

Sheet shape   W10mm x L300mm x T2mm(to glue actual tread on to test sample)

Road

Thickness: 30mm, Width: 50mm, dia. of the road center: 700mm (outer dia.: 750mm)

Road surface

Safety walk, Ice

Road speed

4 - 400r/min (Approx. 0.5 - 50km/h)

Sample speed

35 - 3500r/min (Approx. 0.5 - 50km/h)

Torque detection

20Nm capacity torque meter(Dry/Wet), 1Nm(Ice), measurement error: ±1%FS

Torque meter to be replaced depending on test condition

Slip angle

±30deg. against road surface tangential line (automatic setting)

Slip ratio

0 - ±95% automatic setting (25km/h max. for negative slip ratio)

Load detection

Load cell capacity 200N, measurement accuracy: ±1%FS

Lateral force detection

100N capacity load cell (Dry/Wet), 20N(Ice), Accuracy±1%FS

Load cell to be replaced depending on test condition

Loading part

Feedback control with air servo with the load range of 20 - 150N±1%FS

Test chamber temp.

-10°C - +60°C±2°C

Road temp.

No temperature control (Surface temperature is monitored.)

Water temp.

5°C - 40°C(around the valve)for Wet

Surface temp.

Measured with non-contact surface temperature sensor

Refrigeration

with defrosting device(Temperature changes when defrosting)

Compressed air

0.5MPa - 0.8MPa dry clean air, to be connected with φ8 one-touch connector

Power supply

3 Phs. 200V 75A 50Hz/60Hz  terminal connection

Water

Tap water (15A): 5L/min (for Wet/Ice),

Chiller water for refrigerator (20A):30L/min(25°C or below)

Road drain(32A), Chiller water drain(20A)

Service Condition

(1) Temp: 5 - 40°C

(2) Humidity: 35 - 80%RH

Dimensions, Weight

Dimensions 1400(W)×1800(D)×1760(H)mm, Weight Approx 1,400kg

 

 

 

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