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R50 Series Universal Torque Sensor with Jacobs chuck

Made in the USAThe R50 Series Universal Torque Sensor measures in both directions with a capacity range from 7 to 1150 Ncm. The robust aluminum housing and the ability to use it as a portable as wel as a, in combination with a torque test bench, fixed device make the R50 suitable for a large variety of applications.

The R50 torque sensor contains a Jacobs chuck for measuring samples up to 12.7 mm in diameter (depending on the capacity) and is compatible with the Series 7i, 5i and 3i torque Indicators (sold separately).

Thanks to the unique Plug & Test technology, sensors can be interchanged easily. The internal PCB saves the calibration and configuration of the sensor.
The R50 can, be used in combination with a digital Indicator and a TSTM-DC motorized torque test stand to form a complete torque test system.

We are happy to assist you in finding the most suitable configuration for your needs. Please contact us for more information.  

  • Compatible with the Series 7i, 5i and 3i digital indicators
  • Rugged aluminum housing
  • Unique Plug & TestTM connector holds all calibration and configuration data
  • NIST-traceable certificate of calibration included
  • Measures from 7 Ncm up to 1150 Ncm

Plug & Test® Smart Force & Torque Sensors

General information

Mark-10 M7I, M5I, and M3I indicators are used in combination with Plug & Test® sensors and can therefore accommodate numerous force and torque measurement requirements, from 1 N to 50 kN (0.25 to 10,000 lbF) of force, and from 7 Ncm to 550 Nm (10 ozFin to 5,000 lbFin) of torque.

Plug & Test® sensors can be used handheld or mounted to a fixture or test stand for more accurate and repeatable testing results.
The sensors are separately calibrated therefore they can be disconnected from one indicator and connected to another without the need for re-calibration or re-configuration as this is stored in the PCB located inside the smart connector.


System accuracy is determined by the combination of Indicator and sensor combined. To determine the total system accuracy the accuracy value of the sensor is added to the value of the indicator.
As the Indicators have different accuracy values the total system accuracy may vary between the different indicator/sensor combinations. Indicator Model Accuracy M7I / M5I ±0,1% of full scale M3I ±0,2% of full scale.

Example 1 Model MR01-100 sensor with Model M5I Indicator MR01-100 ±0,15% of full scale + M5I ±0,1% of full scale = Total ±0,25% of full scale This translates into a fixed error of up to: 0,25% x 500 N = 1,25 N

Example 2 Model MR50-50Z sensor with Model M3I Indicator MR50-50Z ±0,35% of full scale + M3I ±0,2% of full scale = Total ±0,55% of full scale This translates into a fixed error of up to: 0,55% x 50 Ncm = 0,275 Ncm

Because accuracy is defined as a percentage of full scale, the fixed error is possible anywhere on the scale from 0 to the capacity. As such, this value represents an increasingly large error as percentage of reading towards the low end of the scale. It is, therefore, recommended that a sensor is selected with capacity as close as possible to the expected load. The resolution may be different for some sensors depending on whether a M7I, M5I, or M3I indicator is being used. For example, a Series R01 force sensor will display finer resolution when connected to a M5I indicator than when connected to a M3I indicator.


Capacity x Resolution With Models 5i and 7i Indicators
MR50-10Z-7 x 0,00570 x 0,057 x 0,005700 x 0,5-10 x 0,005-
MR50-20Z-14 x 0,01140 x 0,114 x 0,011400 x 1-20 x 0,01-
MR50-50Z-35 x 0,02350 x 0,236 x 0,023600 x 2-50 x 0,02-
MR50-121,35 x 0,001135 x 0,1---1 x 0,0005192 x 0,112 x 0.005
MR50-505,7 x 0,005570 x 0,5---4 x 0,002800 x 0,550 x 0.02
MR50-10011,5 x 0,011150 x 1---8 x 0,0051600 x 1100 x 0.05

Capacity x Resolution With Model 3I Indicator
MR50-10Z7 x 0.0057 x 0.00510 x 0,01-
MR50-20Z14 x 0,0114 x 0,0120 x 0,02-
MR50-50Z36 x 0,0536 x 0,0550 x 0,05-
MR50-12135 x 0,1-192 x 0,212 x 0,01
MR50-50570 x 0,5-800 x 150 x 0,05
MR50-1001150 x 1-1600 x 2100 x 0,1

Dimensions-R50 Series

ModelAChuck Size RangeChuck Key Size
MR50-10Z4,82 [122,4]0,062-0,375 [1,6 - 9,5] KGA
MR50-20Z4,82 [122,4]0,062-0,375 [1,6 - 9,5] KGA
MR50-50Z4,82 [122,4]0,062-0,375 [1,6 - 9,5] KGA
MR50-125,19 [131,8]0,078 - 0,5 [2,0 - 12,7]KK
MR50-505,19 [131,8]0,078 - 0,5 [2,0 - 12,7]KK
MR50-1005,19 [131,8]0,078 - 0,5 [2,0 - 12,7]KK
Dimensions in "with [mm] behind Chuck size range is including key


AC1007 Table Stand for R50 Jacobs Chuck Grip

  • Table Stand for R50 Jacobs Chuck Grip

More details

AC1007 Table Stand for R50 Jacobs Chuck Grip 126118

Category Torque Accessories

Grips & Attachments for torque gauges and torque test stands. Universal torque grips and special attachments for specific applications.

More details

Category  Torque Accessories 0

Cic-Torque Torque Instrument Calibration

  • Short turnaround
  • Easy planning of calibration

More details

Cic-Torque Torque Instrument Calibration 127043

Accuracy:± 0.35% of full scale + 1 digit + indicator
Weight:from 0.6 kg
Shipping weight1,4 kg
Warranty:3 years

Related Products

Series-3I Force/Torque Indicator

  • Interchangeable force and torque sensors through Plug & Test® technology (sensors are sold separately)
  • High-speed 2.000 Hz sampling rate
  • Ultra-compact size

More details

Series-3I Force/Torque Indicator

Series-5I Advanced Digital Force/Torque Indicator

  • Interchangeable force and torque sensors through, separately sold, Plug & Test® technology
  • High-speed 7.000 Hz sampling rate
  • USB, RS-232, Mitutoyo, and analog outputs

More details

Series-5I Advanced Digital Force/Torque Indicator

Series-7I Advanced Force/Torque Indicator

  • Interchangeable force and torque sensors through Plug & Test® technology (sensors are sold separately)
  • High-speed 14.000 Hz sampling rate
  • Continous data capture of up to 5.000 data points, at up to 14.000 Hz, downloadable to a PC
  • 5 units of measurement, plus Coefficient of Friction and user-defined unit with configurable name

More details

Series-7I Advanced Force/Torque Indicator

TSTM-DC Advanced Motorized Vertical Torque Test Stand

  • No speed variation with load
  • Maximum load: 11.5 Nm / Upgrade to 22.0 Nm is optional
  • Speed range: 0.01 - 15.00 RPM (0.05-90°/s)

More details

TSTM-DC Advanced Motorized Vertical Torque Test Stand


Buy Now

MR50-10Z - Torque Sensor - 7 Ncm
€ 983,00 
MR50-20Z - Torque Sensor - 14 Ncm
€ 983,00 
MR50-50Z - Torque Sensor - 35 Ncm
€ 983,00 
MR50-12 - Torque Sensor - 135 Ncm
€ 906,00 
MR50-50 - Torque Sensor - 570 Ncm
€ 906,00 
MR50-100 - Torque Sensor - 1150 Ncm
€ 906,00 

20-1025 Chuck key, for 1/2” Jacobs chucks, size KK
€ 9,00 
20-1025-1 Chuck key, for 1/4” & 3/8” Jacobs chucks, size KGA
€ 9,00 
AC1007 Mounting kit, R51/TT03, table top
€ 120,00 
All mentioned prices are excluding VAT & excluding shipment costs.
Availability: Available: 1 - 3 days, Delivery time: 1 - 3 weeks, special order request

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