arrow_back_ios

Main Menu

See All Acoustic End-of-Line Test Systems See All DAQ and instruments See All Electroacoustics See All Software See All Transducers See All Vibration Testing Equipment See All Academy See All Resource Center See All Applications See All Industries See All Insights See All Services See All Support See All Our Business See All Our History See All Our Sustainability Commitment See All Global Presence
arrow_back_ios

Main Menu

See All Actuators See All Combustion Engines See All Durability See All eDrive See All Production Testing Sensors See All Transmission & Gearboxes See All Turbo Charger See All Industrial electronics See All S&V Signal conditioner See All DAQ Systems See All Power Analyser See All S&V Hand-held devices See All High Precision and Calibration Systems See All Test Solutions See All nCode - Durability and Fatigue Analysis See All ReliaSoft - Reliability Analysis and Management See All Test Data Management See All DAQ Software See All Drivers & API See All Utility See All Vibration Control See All Acoustic See All Current / voltage See All Displacement See All Load Cells See All Pressure See All Strain Gauges See All Vibration See All Torque See All LDS Shaker Systems See All Vibration Controllers See All Power Amplifiers See All Accessories for Vibration Testing Equipment See All Training Courses See All Acoustics See All Asset & Process Monitoring See All Custom Sensors See All Data Acquisition & Analysis See All Durability & Fatigue See All Electric Power Testing See All NVH See All Reliability See All Smart Sensors See All Vibration See All Weighing See All Automotive & Ground Transportation See All Calibration See All Installation, Maintenance & Repair See All Support Brüel & Kjær See All Release Notes See All Compliance See All Our People
arrow_back_ios

Main Menu

See All QuantumX See All LAN-XI See All SomatXR See All MGCplus See All CANHEAD See All Optical Interrogators See All GenHS See All API See All Microphone Cartridges See All Microphone Sets See All Microphone Pre-amplifiers See All Sound Sources See All Acoustic Calibrators See All Special Microphones See All Accessories for acoustic transducers See All Experimental testing See All Transducer Manufacturing (OEM) See All CCLD (IEPE) accelerometers See All Charge Accelerometers See All Rotating See All Non-rotating (calibration) See All Electroacoustics See All Noise Source Identification See All Environmental Noise See All Sound Power and Sound Pressure See All Noise Certification See All Industrial Process Control See All Structural Health Monitoring See All Electrical Devices Testing See All Electrical Systems Testing See All Grid Testing See All High-Voltage Testing See All Vibration Testing with Electrodynamic Shakers See All Structural Dynamics See All Machine Analysis and Diagnostics See All Dynamic Weighing See All Calibration Services for Transducers See All Calibration Services for Handheld Instruments See All Calibration Services for Instruments & DAQ See All On-Site Calibration See All Resources See All Software License Management

NTN-SNR - Digital weighing in the production of bearings

NTN-SNR, France

Introduction

Why bearing manufacturer NTN-SFR turned to digital load cells from HBK for production control.

chevron_left
chevron_right

Time and space as critical factors for machine design

One of the first French companies that used our load cells was NTN-SNR, an internationally known manufacturer of bearings and guides with activities in all the markets (automotive, aerospace, agriculture, railways, industrial equipment for quarries, mines, etc.). The application focuses on checking the exact quantity of grease injected into the bearings. This quantity is critical, since the service life of the bearing – and indeed the safety of the equipment on which it is installed – is dependent on it (overheating could be dangerous). The quantity of grease is metered by means of a piston pump; but for greater safety, NTN-SNR prefers to check this by double weighing the bearing, before and after greasing. Until then, the double weighing of the bearings had been performed using high-precision laboratory balances. As this inspection station was a bottleneck in the production process, NTN-SNR looked for a better solution and purchased a machine that performs both the injection of the grease and the double weighing of the bearings. It was on this machine that the FIT transducer was installed. The machine was designed and manufactured by BEA. With two challenges to address, recalls Philippe Viallet, who manages the company:
“First there was the imperative of time: The whole operation (greasing and double weighing) had to be completed within a few seconds. Then there was also the question of space.”
INTERNAL USE - Case Study  snr snr_fit7a_02

NTN-SNR bearing

Why bearing manufacturer NTN-SNR turned to digital load cells from HBK

With the launch of its FIT7A digital load cell, HBK has opened a new chapter in dynamic weighing and industrial metering applications. With its higher precision (Class C4 according to OIML R 60), this load cell enables the extension of strain gauge technology to applications reserved until now for electromagnetic force compensation technologies (EFC). And that while maintaining the key benefits of strain gauge transducers, namely sturdiness proven over decades of use under rough industrial conditions, a high sampling rate (180 weighings/min.) and above all a price less than 60% of that of the EFC technology. With the FIT7A, HBK is underlining its know-how in the field of digital strain gauge transducers. At the very beginning of the 2000s, HBK was the first manufacturer to bring a dynamic load cell with onboard electronics to the market. And the French industries were among the very first to adopt this technology.

Illustration of a FIT7 load cell in isometric perspective

FIT7A Digital Load Cell

For this machine, the technical solutions chosen at that time appear audacious today. Even though the integration of digital techniques into the sensors already appeared inevitable, the FIT digital load cell from HBK was nevertheless an unprecedented step for dynamic load cells. It needed a great deal of confidence to install this on a critical production machine that had to operate without interruption, around the clock.

For Philippe Viallet, this choice demonstrated higher confidence in the manufacturer than the confidence shown in the technology.

INTERNAL USE - Case Study  snr snr_fit7a_03

The FIT7A load cell installed under the inspection point

INTERNAL USE - Case Study  snr snr_fit7a_01
INTERNAL USE - Case Study  snr snr_fit7a_04

Bearing greasing inspection point

Long-time proof of reliability

According to Philippe Viallet, "HBK was a specialist for load cells who we had known for a long time and who had never been in the habit of making promises lightly. Furthermore, the transducer was based on the strain gauge technology that had very much proved its worth when it came to sturdiness. As we know now, the future proved them right – the FIT load cell has kept all its promises. In effect, for an equipment supplier, an application that has functioned for more than 10 years constitutes proof of reliability, particularly on a machine intended for production around the clock. This assurance of a long service life therefore induced NTN-SNR to renew its confidence in the latest version of the digital load cell, the FIT7A, for installation on a new machine:

“When a concept has proved its worth in the field, you gain precious time by duplicating this type of installation for future projects, while ensuring a solid technical basis.”

That is how a customer’s confidence in HBK and its dynamic weighing solutions has grown, and how it has perpetuated over time. This positive experience and the success of an audacious project culminating in the satisfaction of the users makes us want to offer innovative and ever more efficient solutions in the field of dynamic weighing.

About the customer

NTN SNR Roulements 74010 Annecy - France

About the integrator:

BEA Etudes et Réalisations 74960 Grand Gevrier - France
INTERNAL USE - Case Study  snr NTN-logo
Philippe Viallet

Technology used

Other case studies

Showing 9 of 513 items
No more result to load