Wheel Diameter Measuring Gauge

Electronic gauge is designed for measuring wheel rolling circle diameter. Measurements are made directly on rolling stock without wheel set roll-out. The measurement of the diameter is performed according to the “three points” technique, without the complete wheel coverage. The gauge contains numeric display to show the value of the wheel diameter. IDK-BT gauge contains Bluetooth interface for transfer results into wheel-set wear database management system

Wheel Diameter Measuring Gauge IDK Series. Specification

Name of parameter Value
Measurement range, mm 400…1400 or on request
Measurement error, mm ±0.2
Indication discreteness 0.1mm, 0.01mm * or 0.01 inch **
Position of measurement, S, mm On request
Distance between axes of ball bearings (base), mm
and diameters measurement range, mm
122±0.5 (400…750 mm) or
200±0.5 (400…950 mm) or
250±0.5 (600…1400 mm) or
300±0.5 (720…1400 mm)
Display build-in, LED
Operating temperature, °С -5…+55
Weigh, kg <0,5

Wheel Diameter Measuring Gauge IDK-BT Series. Specification

Name of parameter Value
Measurement range, mm 400…1400 or on request
Measurement error, mm ±0.2
Indication discreteness 0.1mm, 0.01mm * or 0.01 inch **
Position of measurement, S, mm On request
Distance between axes of ball bearings (base), mm
and measurement range, mm
122±0.5 (400…750 mm) or
200±0.5 (400…950 mm) or
250±0.5 (600…1400 mm) or
300±0.5 (720…1400 mm)
Display build-in, LED
Operating temperature, °С -5…+55
Power supply – built-in rechargeable battery two AAA 1,2V
The number of measurements that can be taken before battery  recharge is not less than 1000
Weigh, kg 0,5

Wheel Diameter Measuring Gauge IDK Series. Complete Set

Name Quantity Weight, kg
Wheel diameter measuring gauge IDK series 1 piece 0,5
Charger 1 piece 0,2
Manual 1 piece  
Case 1 piece  
Calibration tools (option) on request  
Flat block RF510.11.000 -  
Reference wheel block for calibrating RF510.11.XXXX -  
Shock-resistant case on request  

Wheel Diameter Measuring Gauge IDK-BT Series. Complete Set

Name Quantity Weight, kg
Wheel diameter measuring gauge IDK series 1 piece 0,5
Charger 1 piece 0,2
RF303 – PDA (option) 1 piece 0,4
Charging device   5V 3.0A for PDA (option)    
Manual 1 piece  
Case 1 piece  
Database management system  (CD)    
Calibration tools (option) on request  
Flat block RF510.11.000 -  
Reference wheel block for calibrating RF510.11.850 -  
Shock-resistant case on request  

The measurement of the diameter is performed according to the “three points” technique, without the complete wheel coverage.

The measurement method is based on the diameter calculation by the known length of the segment chord (the distance between the ball bearings centers), which is obtained at placing the gauge onto the wheel. The suggita of the segment is measured by means of the displacement converter.

Wheel diameter measuring gauge IDK Series

Wheel Diameter Measuring Gauge. Calibration process

Wheel Diameter Measuring Gauge. Example of application

Order information for Wheel diameter measuring gauge

IDK-S/B-MIN/MAX-X-BT

Symbol Description
S Position of measurement, mm
B Base, mm
MIN Bottom of measuring range, mm
MAX Up of measuring range, mm
X Position of indication. А – Indication is at the side of side supports (figure А), В – Indication is at opposite side (figure В)
BT Bluetooth presence*

* The gauge with Bluetooth can work in autonomous regime and together with RF303 PDA or PC, with measurements saving in database/.

Example: IDK-70/250-850/1260-А-BT. Position of measurement – 70 mm; base of the gauge – 250 mm; bottom of measuring range – 850 mm; up of measuring range – 1260 mm; position of indication – А, BT – Bluetooth presence. 

idk order

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