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Plug Gauge

Plug Gauge
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Plug Gauge

Product catalog summary
Introduction
DIATEST is a leader in precision engineering, adhering to DIN EN ISO 9001 standards to ensure high-quality products. The company focuses on precision from design to final product.
Technical Description
Plug gauges (BMD) are high-precision instruments used for detecting dimensional deviations and shape defects in bores. They are suitable for both manual and automated systems, offering ease of handling and superior precision.
Basic Plug Gauge Types
The document describes various plug gauge types, including those for through and blind bores, automatic gauging, and special-purpose gauges, each designed for specific measurement needs.
Special Models and Customization
DIATEST offers customized solutions for special measurement problems, with options for special markings and design modifications based on customer requirements.
Design and Material Characteristics
Plug gauges are made from materials like spring steel, carbide, and gauge steel, with options for hard chrome coating. Special designs include OCR and ZHML cylinders.
Technical Data and Maintenance
Dimensions are in millimeters, with technical modifications possible for performance improvement. Maintenance involves minimal cleaning and greasing, with specified gauging accuracy and permissible deviations.
Measurement Range and Extensions
The standard measurement range can be extended for larger bore tolerances, with specific series offering different maximum ranges.
Indicators and Gauging Pressure
Plug gauges are compatible with various indicators, with recommended gauging pressures provided for different series.
Gauging Contacts
Different materials for gauging contacts are available, including hard chrome, ceramic, carbide, ruby, and diamond, each suited for specific conditions.
Protective Covers
Protective covers are available to protect mechanical parts, with options based on nominal diameter and type.
Specifications
The document outlines specifications for BMD plug gauges, focusing on nominal diameters of 25.0 mm and above, with specific types and order suffixes.
Service Life
The service life of the gauges can reach up to 1,000,000 measurements under optimal conditions, depending on factors like workpiece surface quality and gauging pressure.
Gauging Pressure
BMDs without inherent gauging pressure have a range of 0.2 – 1.7 N, with options for retracting gauging contacts for sensitive surfaces.
Toleranced Connecting Length (AT0)
This option adjusts dimensions to avoid readjustment issues when changing plug gauges, requiring a setting ring.
Reduced Cylinder Diameter Tolerance (MZ)
This option minimizes production tolerances to reduce axial and radial errors, suitable for small bore tolerances.
Inspection Plug Gauge (BM)
Available on request, this gauge measures minimum bore diameter and indicates actual diameter and shape defects.
Basic Plug Gauge Types
Includes general-purpose gauging, through bores, and blind bores, each with specific features to facilitate insertion and prevent jamming.
Special Features and Options
Options like entry grooves and beveled cylinders enhance performance and prevent jamming, with customization available.
Order Codes and Examples
Detailed order codes and examples ensure precise specification for different applications.
Specifications
Details on indicator holders, threading options, and temperature stabilization features are provided, highlighting specific models and their unique features.
Procedures
Instructions for replacing indicator stems, adjusting gauging pressure, and installing BMD plug gauges are outlined to ensure accuracy.
Standards and Recommendations
Recommendations include using holders with spring tension and ensuring gauging pressure is adjusted on the same plane as the workpiece.
Key Data from Tables
Tables list holder models, clamping bore sizes, and order numbers, specifying marking strips and adapters for BMD plug gauges.
Critical Information
Important notes include ensuring sufficient probe cable length, removing protective bellows for certain models, and maintaining specific dimensions with adapters.
Overview
The document provides specifications and instructions for depth extensions, floating holders, and small measurement fixtures used with BMD plug gauges.
Depth Extensions
  • Series 4: Designed for Series 4 BMD plug gauges, temperature stabilized, and suitable for automatic measurement.
  • Series 6: Temperature stabilized for lengths of 80 and above, compatible with BMD plug gauges with air supply.
  • Series 10: Temperature stabilized, combinable, with air supply options.
  • TVT Extensions: Used with specific holders, with limitations on probe extensions.
Depth Stops
Used to limit measuring depths, available in different models and sizes with options for special threading.
Small Measurement Fixtures
Used for stationary measurements, adaptable for different BMD plug gauge series, and customizable.
Floating Holders
Compensate for positioning errors, available in different sizes and configurations, with options for anti-impact protection.
Key Features and Recommendations
  • Temperature stabilization is critical for accuracy.
  • Pressure springs help counteract gauging pressure in overhead work.
  • Floating holders should not be clamped too tightly.
  • Special models are available upon request.
Floating Holder for Multiplane Plug Gauges
Designed for Type ME-BMD plug gauges, featuring anti-impact protection and weight compensation options.
Carbide Pressure Needles
Replaceable needles marked with notches for identification, with part codes for various options.
Setting Rings
Used to calibrate measuring devices, available in sizes conforming to DIN 2250-C standards.
General and Technical Abbreviations
A comprehensive list of abbreviations for BMD plug gauge components and configurations is provided.
Contact Information
Contact details for DIATEST offices in various countries are provided, including phone numbers, fax numbers, and email addresses.
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Catalog excerpts

Plug Gauge-2

Page 3 DIATEST – Expertise for precision and safety 4 Technical description 9 Basic plug gauge types 10 Basic type - Standard 11 Basic type for through bores 12 Basic type for blind bores 13 Plug gauges for automatic gauging 14 Special-purpose plug gauges 19 PA for measuring parallel wall gaps 20 Multiplane plug gauges Page 22 Basic types with compressed air supply 23 Indicator holders 26 Indicator holders with adjustable spring pressure 28 Electrical probe holders 31 Special gauge holders 33 Holders for Analodig indicators 34 Adapters 36 Right-angle attachments 37 Depth extensions 40 Depth stops...

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Plug Gauge-3

DIATEST DIATEST Superior quality for reliable Competence for precision and safety DIATEST performance High-volume engineering does not work without precision. To achieve highest possible safety in production, precision is necessary starting from design to final product. Here the trademark DIATEST stands for quality. Gauges with repeatability to 0.001 mm/0.00005“ guarantee exact results. DIATEST bore gauges are manufactured according to DIN EN ISO 9001. Using state-of-the-art manufacturing engineering the highest quality standards are achieved. Our products withstand technological demands, no...

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Plug Gauge-4

TA-KW SO-ZL Plug gauges (BMD) are selfindicating, self-centering, highprecision measurement instruments. These easy-to-use gauges are suitable for both static and dynamic measurements. They can be used for manual detection of dimensional deviations and shape defects errors in bores in serial measurement at the machine but may also be installed in measuring equipment and automated systems. A broad range of applications, ease of handling, superior precision and rugged construction are combined in a highly costeffective system. A wide selection of basic types in the standard program, supplemented...

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Plug Gauge-5

Superior quality for reliable Technical description DIATEST performance Delivery times Delivery times are quoted ex factory. Express orders should allow for the weekday on which goods can be shipped. Repairs Please allow approx. 10 – 15 days for repairs or general reconditioning. General reconditioning includes functional testing and replace-ment of damaged parts. The hard chrome coating on plug gauge cylinders will be renewed as needed (this option is not automatically included in the general overhaul service). A cost estimate will be provided on request. Maintenance No special maintenance is...

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Plug Gauge-6

Measurement range limitation MB-B A reduction of the standard measurement range can be requested in orders for Series 6, Series 10 and Series FB. Order suffix: MB-B and max. desired measurement range. Sample order for max. measurement range of +0.1 mm instead of 0.2 mm: BMD-S10-CR-35.0-MB-B+0.1 Washers can also be used to reduce the measurement range. DIATEST offers a line of washers for this purpose: BMD Series 6 US-6 BMD Series 10 US-10 Indicators, gauging pressure Plug gauges can be used with nearly all mechanical and electronic indicator units with Ø 8h and 3/8“ stem. Gauging pressure has...

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Plug Gauge-7

Series 4 3.95 – 9.0 R = 0.5 Series 6 7.0 – 16.0 R = 2.0 Series 10 15.0 – 270.0 R = 2.5 Order suffix MDI Example BMD-S10-CR-35.0-MDI Not available for FB Gauging contacts, diamond (MDI) BMD series Diameter range Gauging radius BMD-ME SO-KO SO-2Z PK-ZHML Superior quality for reliable DIATEST performance Ruby gauging contacts (MRU) (extra charge) For non-ferrous metals, aluminum and alloys of both. It may be necessary to opt for diamond contact when working with very soft aluminum materials, etc. Gauging contact radii, see Table MHM Hardness, ruby: approx. 2000 HV Order suffix: MRU Example: BMD-S10-35.0-MRU...

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Plug Gauge-8

BMD without inherent gauging pressure (PG) Without an indicator, BMDs have an inherent gauging pressure of approx. 0.2 – 1.7 N. In Option PG – without inherent gauging pressure – the built-in gauge head is not pre-extended. The gauging contacts are retracted beneath the surface of the guide cylinder. This option should be selected e.g. for use with sensitive or rough workpiece surfaces. Please note: Indicator gauging pressures must be higher, as the gauge head exerts no pressure of its own. Option PG should be used in conjunction with the following accessories: Holders: MH-6-73-R Page 23 MH-10-150-R...

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Plug Gauge-9

Superior quality for reliable DIATEST performance Our Basic plug gauge types are divided into three groups: 1. Basic plug gauge for general-purpose gauging Due to its short L1 dimension, this type is not suitable for measurement from the lip of the bore. 2. Basic plug gauge for all through bores This type of plug gauge should always be used for workpieces with through bores. Another advantage is that the enlarged L1 dimension allows for reliable measurement from the lip of the bore. 3. Basic plug gauge for blind bores This type of BMD plug gauge should always be used when measurements are to...

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Plug Gauge-10

S Basic type – Standard Nominal diameter range: Ø 2.98 – 9.0 mm S4 Sample order: Bore diameter Order no. 7D6 BMD-S4-CR-7.04 Ø Z = Nom. diameter - 0.02/- 0.04 Diameters less than 2.98 with T-BMD (Page 16) Nominal diameter range: 7.0 – 20.0 S6 Sample order: Bore diameter Order no. 10H6 BMD-S6-CR-10.0 Ø Z = Nom. diameter - 0.02/- 0.04 Nom. diameter 7.0 – 8.0 > 8.0 – 20.0 Ø D 6.8 7.9 SW 6 7 Nominal diameter range: above 15.0 – 44.0 mm S10 Sample order: Bore Order no. 40 – 0.007/+0.025 BMD-S10-CR-39.993 Nom. diameter Ø 15 – 32.0 Ø Z = Nom. diameter - 0.02/- 0.05 Ø 15 – 44 mm Nominal diameter range:...

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Plug Gauge-11

Superior quality for reliable D DIATEST performance Basic type for through bores Nominal diameter range: 7.0 – 20.0 mm D6 Sample order: Bore diameter Order no. 10 + 0.04 BMD-D6-CR-10.0 Ø Z = Nom. diameter - 0.02/- 0.04 Nom. diameter 7.0 – 8.0 8.0 – 20.0 Ø D 6.8 7.9 SW 6 7 Nominal diameter range: above 15.0 – 44.0 mm D10 Sample order: Bore Order no. 42 K8 BMD-D10-CR-41.97 Nom. diameter Ø 15 – 32.0 Ø Z = Nom. diameter - 0.02/- 0.05 Ø 15 – 44 mm Nominal diameter range: above 44.0 – 70.0 mm D10 Sample order: Bore Order no. 60 JS8 BMD-D10-CR-59.977 Ø Z = Nom. diameter - 0.03/- 0.06 Ø > 44 – 70 mm...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.