Articles About measurement

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1 How To Use a Hand-Held Micrometer to Measure Miniature and Instrument Ball Bearings (December 2013)

For the most accurate measurements, miniature and instrument ball bearing dimensions should be measured with a calibrated air gauge. A good second option is a calibrated optical comparator. On occasion, it may be necessary to use a calibrated, hand-held micrometer to double-check a measurement or for simple verification while working in the field.

2 Smart Couplings Remove Guesswork from Measurements in Machinery Applications (March 2020)

Quite often, the collection of precise data in drive technology applications can be problematic. Data monitoring in a rotating drivetrain is difficult because a direct networking cable connection is often not an available option. Nothing sends shivers down the spine of for example, a production line manager or a system integrator like uncertainty. That's why achieving precise measurement of things like torque and other parameters in machinery applications is, while daunting, a dearly desired goal, especially if those measurements are only available at the drive and motor.

3 Inexpensive Methods to Measure the Performance Characteristics of a Linear Motion Device (December 2013)

This article describes a series of tests that can be performed by the average user, with little experience, and without sophisticated measuring instruments, to quickly determine the most important performance characteristics of linear motion systems.

4 Acoustic Analysis of Electric Motors in Noisy Industrial Environment (June 2016)

This paper presents a method for the acoustic analysis of electric motors in noisy industrial environments. Acoustic signals were measured via acoustic camera 48-microphone array, which has the capability to localize a sound (or sounds) source and, in turn, separate those sounds from intrusive background noise. These acoustic analysis results are then compared with vibration measurements; vibration monitoring is a well-known and established technique used in condition monitoring, and in this work vibration measurements were used as a reference signal for assessment of the value of the acoustic measurements. Vibration signals were measured by piezoelectric accelerometers. Two induction motor cases were examined — a healthy motor case, and a combination of static eccentricity with soft foot case. As shown, acoustic analysis appears to be a valuable technique for condition monitoring of electric motors — particularly in noisy industrial environments.

5 Gear Span Measurements (August 2017)

A reader is looking for the best reference materials with formulas for gear measurements over pins.

6 Effect of Assembly Errors in Back-to-Back Gear Efficiency Testing (December 2015)

As gear efficiency is improved in small steps, it is important to be able to distinguish actual improvements from scatter that can occur while testing. An FZG back-to-back gear test rig was used to investigate how the assembly and re-assembly of the same test setup affects the measurements. A spread in torque loss between one assembly and another of the same test setup were observed. Rig conditions also affected the spread in input torque. With knowledge of how the spread in torque loss varies due to assembly, test results could be distinguished between changes due to assembly and actual differences between tests.

7 Experimental Determination of Oil Rheology Parameters to be Implemented in Power Loss Predictions of Gears and Rolling Element Bearings (April 2019)

Rheology models express the way tribological conditions translate to shear stress of the lubricant and friction force on the interacting surfaces. Due to the complexity of the lubricant rheology, the friction coefficient is usually obtained experimentally either under the same operating conditions or by curve fitting in a properly chosen friction map. The current study aims at determining the rheological parameters of a lubricant based on friction measurements carried out on a commercial, readily available ball-on-disc machine.

8 Dude - Where's My Preload (August 2014)

Many of us have been there; the bearings had the correct preload. You know it, you were there, and you personally saw the measurements. Now, the testing is done and the preload is gone. Not a little gone, not sort of gone - gone, gone. Finger pointing ensues. Suppliers are dragged in by their wrinkly Polo collars. You know the drill. Losing preload in a tapered roller bearing (TRB) system over the life of your application can be a troublesome problem, particularly for gear sets that are prone to noise or severe applications that rely on a very rigid and stable system.

9 Wind Turbine Field and Test Rig Testing as Part of the Design Process for Gearboxes (September 2014)

The growth of worldwide energy consumption and emerging industrial markets demands an increase of renewable energy shares. The price pressure coming from coal, oil, nuclear and natural gas energy - combined with enormous worldwide production capacities for components of wind turbines - make wind energy a highly competitive market. The testing and validation of gearboxes within the test rig and the turbine environment attract a strong focus to the needs of the industry. The following contribution sums up the typical process requirements and provides examples for successful system and component verifications based on field measurements.

10 Finite Element Evaluation of Bearing Instrumentation Method (December 2014)

This paper presents an evaluation of measurements being taken on a 750 kW wind turbine gearbox being tested by the National Renewable Energy Laboratory (NREL). High-speed stage gears and bearings have been identified as critical components of the gearbox; during gearbox testing, these components were instrumented and tests were developed to evaluate loads on high-speed tapered roller bearings (TRBs). In this paper an advanced finite element-based contact modeling procedure has been applied to model the high-speed stage with the bearings fully modeled in order to evaluate strain levels. A major conclusion is that the strains of the slotted grooves are at such a level that they have acceptable signal-to-noise levels. This was verified by the results of the initial experiments presented here.

News Items About measurement

1 Fredericks Tilt Sensor Ensures Precise Measurements (February 2, 2016)
The Fredericks Company, a manufacturer of tilt and vacuum measurement products, introduces the 0729-1760-04 ±10° Dual Axis RS-...

2 K-Beam Accelerometers Support Single and Triaxial Measurements (October 14, 2011)
Kistler, a worldwide supplier of precision sensors, systems and instrumentation for the dynamic measurement of pressure, force, torque an...

3 ASTM Proposes X-Ray Diffraction for Stress Measurement of Aerospace Bearings (September 2, 2010)
X-ray diffraction has become a popular means of residual stress measurement in the aerospace materials field over the last 50 years. A pr...

4 FAG Industrial Offers Torque Measurement Service (January 28, 2008)
FAG Industrial Services is offering customers torque measurement capability that monitors complete drive components. Measurements can be ...

5 Sensor Connection Expands Measurement and Control Instruments (December 7, 2016)
The Sensor Connection a division of Harold G. Schaevitz Industries LLC, has expanded its line of measurement and control instrumentation ...

6 Taylor Hobson Offers Bearing Measurement Tool (August 6, 2014)
A precision surface measurement tool featuring an industry-leading high-speed column drive, precision positioning and 4 mm roundness and ...

7 EPC Mounting Brackets Turn Shaft Encoders into Linear Measurement Solution (January 31, 2018)
Encoder Products Company (EPC) has introduced a new linear measurement solution: a bracket that fits all of EPC’s Size 25 Shaft Enc...

8 Adams Company Invests in Gear Measurement System (October 7, 2010)
The Adams Company, a custom manufacturer of bevel, helical, spur, worm gears and shafts, are continuing to acquire the latest equipm...

9 Klingelnberg Offers Complete Measurement of Complex Components (May 31, 2019)
Whether turning blanks, ground workpieces, or rolling bearings – Klingelnberg Precision Measuring Centers of G variant – the ...

10 Schaeffler's TorqueSense Offers Long-Term Stability with Measurement Module (March 17, 2020)
In order to achieve maximum efficiency in industrial drivetrains and processes, it is essential to have precise knowledge of the torque a...

11 Measurement Specialties Acquires Encoder Devices (December 1, 2003)
Measurement Specialties Inc. acquired the assets of Encoder Devices LLC for $4.4 million. According to the company’s press releas...

12 alpha & Wittenstein Increase Measurement Accuracy (February 18, 2008)
New sensor technology from alpha & Wittenstein integrates torque and force sensors into the housing of servo gear reducers, enabling ...

13 Sensors Offer Rotational and Angular Measurement (October 28, 2011)
Pepperl+Fuchs recently introduced PMI360DV Rotational Measurement Sensors with analog output.  Available in three models to satisfy ...

14 Micro-Measurements Introduces Lightweight Hybrid Sensors (September 27, 2017)
The Micro-Measurements brand of Vishay Precision Group, Inc. has introduced a new range of miniature, lightweight hyb...

15 Heidenhain Metrology Unit Offers Reliable Basic Measurement of 1D Values (May 19, 2020)
With its rugged industrial design, Heidenhain’s new shop-floor hardened Gage-Chek 2000 evaluation electronics box is now available....

16 Measurement Specialties Releases XP5 Sensor (January 20, 2014)
Measurement Specialties has released the rugged XP5, a miniature pressure sensor with SanShift technology that eliminates zero shifts cau...

17 Mayr Offers Coupling with Integrated Torque Measurement (May 29, 2013)
The torque-measuring shaft coupling ROBA-DSM is based on the tried-and-tested backlash-free shaft coupling ROBA-DS. This torque measureme...

18 Mayr Couplings Provide Accurate Measurement Results (April 12, 2016)
Essential components for torque measuring flanges in test benches are shaft couplings, which reliably compensate for any shaft misalignme...