The carbon steel vee block pair is a very useful inspection support designed for positioning and checking cylindrical components. The 90° vee blocks allow shafts, pins, spindles, tubes and other round components to be supported in a stable way, creating a practical geometric reference for dimensional inspections, comparative measurements and marking operations.
Supplied as a pair, these vee blocks can be used either to support a single component on two separated contact points or to inspect two different parts independently. In the first case, the pair configuration is useful when the component must remain aligned during inspection or when the support needs to be distributed more evenly along the length of the part. In the second case, it allows separate inspections to be carried out more practically. This makes the pair especially suitable for workshop inspections, metrology room applications and component preparation activities.
The 90° vee geometry is designed to correctly accommodate a wide range of diameters. In practice, the vee block helps maintain the cylindrical component in a stable position, reducing the risk of rolling and simplifying the use of indicators, height gauges and other inspection instruments. For this reason, the vee block pair is frequently used as a support base during checks of concentricity, runout, straightness or simple dimensional inspections on round components.
The carbon steel construction is important because the vee block must maintain stable geometry over time. For this type of instrument, the stability of the supporting surfaces is fundamental, especially when used as a reference during repetitive inspections. The 1/100 tolerance makes the support suitable for technical applications requiring a good level of support accuracy.
From an operational point of view, these 90° vee blocks are also very practical during marking and component preparation operations. A shaft or tube correctly positioned on a vee block pair can be checked, marked or compared more easily than on a generic support surface. This helps maintain a more organized and consistent workflow during daily inspections.
The different available sizes allow the most suitable version to be selected according to the diameter of the component to be supported. The vee block base dimensions cover diameters from 5 mm up to 75 mm, with a 90° vee designed to adapt to different applications. This makes the carbon steel vee blocks a versatile solution for both small components and larger cylindrical parts.
In summary, the carbon steel vee block pair 90° is a very practical inspection accessory whenever cylindrical components need to be supported and checked using a stable, repeatable and technically correct reference.
Applications
- Support of shafts, pins, spindles and cylindrical components
- Indicator inspections on round parts
- Runout and concentricity verification on cylinders
- Marking operations on shafts, tubes and turned components
- Stable support during dimensional inspections in workshops
- Use with surface plates and comparative instruments
- Positioning of cylindrical components during preparation operations
- Inspections on components within the usable diameter range of the vee block
FAQ – Carbon steel vee block pair 90°
What is a carbon steel vee block pair?
It is an inspection support used to position and check cylindrical components in a stable way.
What is a pair of 90° vee blocks used for?
It is used to support shafts, pins, tubes and other cylindrical components during dimensional inspections, comparative checks and marking operations.
Why are vee blocks supplied as a pair?
Because they can either support a single component more effectively along its length or allow separate inspections on two different parts.
What does a 90° vee mean?
It means the upper groove has a 90° vee geometry suitable for correctly supporting cylindrical components of different diameters.
What types of components are most commonly inspected using vee blocks?
They are mainly used on shafts, pins, spindles, tubes, rollers and turned or ground cylindrical components.
Why are vee blocks useful with an indicator?
Because they help keep the cylindrical component stable and make runout, concentricity and comparative inspections easier.
What advantage does carbon steel provide?
It provides long-term geometric stability, an important characteristic when the vee block is used as a reference for repetitive inspections.
What does the 1/100 tolerance indicate?
It indicates the geometric accuracy level of the vee block, useful for technical applications requiring reliable support accuracy.
Can these vee blocks also be used for marking operations?
Yes, they are also very useful during marking operations because they maintain the cylindrical component in a stable position on the workbench or surface plate.
How is the correct vee block size selected?
The correct size is selected according to the diameter of the component to be supported, verifying that it falls within the minimum and maximum usable range for that model.
Are vee blocks only used in metrology rooms?
No, they are commonly used both in metrology rooms and in workshops during inspections, part preparation and comparative checks.
What are the most common mistakes when using vee blocks?
The most common mistakes are supporting dirty or burred components, using a vee block not suitable for the component diameter or incorrectly positioning the pair on the surface plate.
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| Product code | A (mm) | B (mm) | C (mm) | Min. diam. (mm) | Max diam. (mm) | V
mm |
Tolerance |
| SA6400-01 | 75 | 40 | 40 | 5 | 26 | 26 | 1/100 |
| SA6400-02 | 100 | 45 | 45 | 5 | 30 | 30 | 1/100 |
| SA6400-03 | 150 | 55 | 55 | 5 | 42 | 40 | 1/100 |
| SA6400-04 | 200 | 70 | 70 | 5 | 56 | 50 | 1/100 |
| SA6400-05 | 250 | 85 | 85 | 5 | 75 | 62 | 1/100 |
