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This section provides an overview for eccentricity measuring instrument as well as their applications and principles. Also, please take a look at the list of 17 eccentricity measuring instrument manufacturers and their company rankings. Here are the top-ranked eccentricity measuring instrument companies as of February, 2025: 1.SIKORA International Corp., 2.Marposs, 3.Zumbach Electronics Corp..
Table of Contents
An eccentricity measuring instrument is used to measure the eccentricity, bending, or runout of a shaft or other object.
Eccentricity is defined as the misalignment of the center of a workpiece compared to the center point where it should be. In addition to workpiece eccentricity, runout, bending, concentricity, and coaxiality can also be measured.
Eccentricity is usually measured using a dial gauge. Center holes machined on both sides of the workpiece are clamped at both centers of the measuring instrument. The dial gage is set at the point to be measured and the workpiece is rotated for measurement.
In addition to the dial gauge method, there are other measurement methods such as reflective and transmissive methods using lasers and optics.
Eccentricity measuring instruments are used to measure the eccentricity of rotating cutting tools, various arbors, crankshafts, gears, piston heads, etc. Eccentricity measuring instruments are also used to measure the eccentricity of lenses.
Parallelism between the top of the eccentricity measuring instrument table and both centers is assured. The structure is rigid to prevent errors caused by the weight of the workpiece or deviations over time.
The purpose of using eccentricity measuring instruments is usually to check accuracy after machining, such as cutting or grinding. In the case of bending measurement, it is used to check distortion after heat treatment.
By placing the dial gauge on the end face of a workpiece with a multi-stage shaft shape, it is also possible to measure the squareness of the end face with respect to both centers.
Measurement of Center Standards
The centers of eccentricity measuring instruments are usually made of hardened steel. When used on hard workpieces or for frequent measurements, a carbide center with a carbide brazed tip may be used.
For workpieces with an inside diameter machined instead of a center hole at the edge of the workpiece, an umbrella type center is used. A center with the same bevel angle as the chamfer angle of the bore machining part is required.
A dial gauge is applied to the outer surface of the workpiece and the change in position of the workpiece outer surface is read while the workpiece is rotated slightly. This is the center-based eccentricity measurement.
Measurement of Outer Diameter Standard
Instead of clamping by both centers of eccentricity measuring instruments, the outer diameter of a workpiece is placed on two sets of rollers and supported by two sets of rollers at both ends of the workpiece, for a total of four rollers. Eccentricity can be measured by rotating the workpiece. The measurement value is based on the outside diameter.
There is also an eccentricity measuring instrument that can measure eccentricity by placing one side of the workpiece on a set of two rollers and attaching a roller for clamping to the top of the roller, thereby enabling single-handed measurement. For cylindrical shapes with inside diameter processing, where the coaxiality of the inside diameter with respect to the outside diameter is to be measured, a dial gage can be placed on the inside diameter and rotated to make the measurement.
In either case, the span of the two rollers must be adjusted according to the size of the workpiece diameter.
Laser Eccentricity Measuring Instrument
Runout of the outer diameter during rotation can be measured. Using a reflective laser displacement meter, a laser is shone on the outer surface of the rotating object and the reflected wave is detected to measure the distance variation. A sampling rate of at least 10 times the rotational speed is required.
Transmission-type laser dimensional measuring instruments can also be used for measurement. The laser is applied to the circumferential direction of the outer surface of the rotating body, and the p-p value of the runout is measured by the receiver. A sampling speed of at least 10 times the rotational speed is required.
In addition, using a transmission-type 2-D laser dimensional measuring instrument, positional variations at multiple points can be measured. Runout of V-grooves and protrusions cut on the circumference can be measured.
Optical Eccentricity Measuring Instrument
This method measures the eccentricity of convex and concave lenses. There are two types: reflective and transmissive. The reflective eccentricity measuring instrument measures the eccentricity between the outer diameter of the lens under test and the spherical center of the lens using the reflective method.
The transmission eccentricity measuring instrument measures the transmission eccentricity of a lens. Transmission eccentricity is the amount by which transmitted light deviates from the optical axis. The optical axis is the line connecting the spherical centers of both sides of the lens.
First, on the table of the eccentricity measuring instrument, set the left and right centers at the desired positions according to the length of the workpiece and lock each of them. One of the left and right centers is designed to move in and out by operating a lever.
By operating this lever, the workpiece is set with the center retracted, and the workpiece is clamped by returning the lever. The force of the spring enables the workpiece to be supported with constant holding force.
The dial gauge is placed on the outer surface of the workpiece, and the workpiece is rotated. The change in the pointer obtained at that time is the eccentricity.
*Including some distributors, etc.
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Magnetic Analysis Corp., founded in 1928 and located in Elmsford, New York, is an American manufacturer providing instruments, solutions, and systems for nondestructive testing (NDT). The company offers eddy current testing (ECT) and multichannel ultrasonic testing (UT) instruments, designed for bars, tubes, and pipes, as well as eddy current and ultrasonic rotaries for testing round bars and tubular products. It also provides ultrasonic velocity measurement equipment, used for testing automotive parts, along with rail wheel testers. The company further offers flux leakage testing instruments for defect detection in hot rolled black steel bars and flaw identification in heavy wall magnetic tubing.
Zumbach Electronics Corp., founded in 1957, is a manufacturer of on-the-line measuring, monitoring and control systems. The company in Hauptstrasse, Orpund Schweiz, offers maintenance, repair and calibration, training, support & consultation, and spare part delivery. They have 11 international subsidiaries and representatives in 40+ countries. Their products include a Laser surface velocimeter, KW fault detector, MSD led device, Steelmaster, and calibrator. These are used in wire & cable, rubber, steel cold or hot, optical fibre, non-ferrous and plastic industries.
Marposs S.p.A. is headquartered in Bentivoglio, Italy. The company serves industries such asa aerospace, semiconductors, machine tooling, and biomedical as a manufacturer and as a service provider. The company’s products vary by industry but include tools for gauging, profiling, and monitoring, as well as data management systems and machines for testing and automation. The company’s services include after sales service, customer training, original spare parts, retrofit and upgrade of existing machinery, and project management consulting services.
Teclock, founded in 1950 and based in Okaya, Nagano, Japan, is a distinguished manufacturer of precision measuring instruments. Its instruments has a high dimensional accuracy with a smallest scale of 0.0005mm. Its product lineup includes dial indicators, lever testers, thickness gauges, depth gauges, and calipers. The company also offers height gauges, stands, handy durometers, and micrometers. The company also provides a Cloud-based IoT measurement solution, enabling the seamless digitization and analysis of measurement data.
SEIKOH GIKEN Co., Ltd., a company founded on June 7, 1972, and headquartered in Chiba, Japan, is a manufacturer and supplier of optical components and equipment. The company specializes in the development and production of fiber optic connectors, fusion splicers, and related products for the telecommunications and data communication industries. Their products are used for fiber optic connections in various applications, including telecommunication networks, data centers, and optical sensing systems. The company also offers customer services including prompt and responsive communication to address inquiries and technical assistance.
SIKORA International Corp., established in 1973, is a manufacturer of measuring and control technology in Bremen, Germany. The company's products and services ensure quality and optimize production processes in various industries. The company's measuring control technology measures and controls parameters such as diameter, eccentricity, ovality, and thickness. Its inspection systems detect defects such as cracks, inclusions, and voids. Its analysis and sorting systems classify and sort products based on quality characteristics.
S.A.M.A. Italia S.r.l., established in 1994 and located in Viareggio, Italy, is a manufacturer of measuring and control instruments through its brand SAMA Tools. The company offers a wide range of products, including climate chambers, salt spray cabinets, calipers, micrometers, weighing systems, and more. It also offers instruments for environmental and workplace safety monitoring and control. Its products can help in monitoring and controlling environmental and safety conditions. The company has achieved ISO 9001 and ISO/IEC 17025 certification. It serves industries such as manufacturing, quality control, and more.
Tosei America Inc., founded in 2009 and located in Cincinnati, Ohio, is a manufacturer of automatic measuring equipment for production lines of precision automotive parts, bearings, and electronic products. The company provides a range of products, including gages, micrometers, digital measuring instruments, laser interferometers, and automatic measuring systems. Their products cater to diverse industries such as automotive, bearings, and the electronics industry. These products are used to ensure adherence to industry standards, detect defects or variations, and verify the reliability and precision of the produced components.
Proton Products, established in 2000 and headquartered in Buckinghamshire, England, is a manufacturer of instrumentation and process control products. The company offers a wide range of products such as speed and length measurement systems, spark testers, laser gauging systems, and more. It also offers tension measurement systems, extrusion control, wire preheating, lump and neck detection, and more. Its product helps manufacturers maintain consistent tension levels in their production processes, ensuring good quality output. The company has achieved ISO 9001:2015 certification for its quality management systems. It serves various industries, including wire and cable, web converting, and more.
MABUCHI S&T Inc. founded in 1950 and based in Tatsuno, Kamiina, Nagano, Japan, is a manufacturer and supplier of products in the optical, electronic, and life science fields. The company's product range includes spherical lens, aspherical lens, prisms, equipment, related materials, health products, and agitation products. These products find applications in optical instrumentation and health and wellness solutions. They primarily serve industries such as optics, electronics, and life sciences. Beyond its product manufacturing, the company offers consultation services, technical support, and product customization.
Ranking as of February 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | SIKORA International Corp. |
11.8%
|
| 2 | Marposs |
8.0%
|
| 3 | Teclock |
8.0%
|
| 4 | Novatechrus Ltd. |
7.5%
|
| 5 | Zumbach Electronics Corp. |
7.5%
|
| 6 | Proton Products |
7.1%
|
| 7 | Magnetic Analysis Corp. |
6.6%
|
| 8 | Handan Nihao Welding Material Production Equipment Co.,Ltd. |
6.1%
|
| 9 | SEIKOH GIKEN Co., Ltd. |
6.1%
|
| 10 | Sci-Mach Industrial |
5.7%
|
Derivation Method
The ranking is calculated based on the click share within the eccentricity measuring instrument page as of February 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
Japan
|
5 | 38.5% |
|
Italy
|
2 | 15.4% |
|
United States of America
|
1 | 7.7% |
|
Switzerland
|
1 | 7.7% |
|
Germany
|
1 | 7.7% |
|
India
|
1 | 7.7% |
|
China
|
1 | 7.7% |
|
Russia
|
1 | 7.7% |
41 products found - Page 1
41 products - Page 1
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