V block
A V-Block is a precision metalworking tool used to securely hold cylindrical or round workpieces (like rods, shafts, or pipes) during machining, inspection, or marking operations. It features a V-shaped groove (usually 90°) on its top surface that supports the round object, ensuring stable positioning and accurate alignment. V-Blocks are commonly made of hardened steel or cast iron and are often used in pairs with clamps to prevent workpiece movement during operations such as drilling, grinding, or measurement.
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Product Details
Key Features
1. Precision-ground surfaces – Ensures accurate alignment and stability of round workpieces.
2. V-shaped groove (typically 90°) – Securely holds cylindrical parts in place.
3. High hardness material – Usually made from hardened tool steel or cast iron for durability.
4. Magnetic or non-magnetic types – Magnetic V-Blocks help in holding ferromagnetic parts without clamps.
5. Available in pairs – Used together for longer shafts to ensure balance.
6. Clamping mechanism – Many V-Blocks include clamps to hold the workpiece firmly.
7. Corrosion-resistant finish – For longevity and dimensional stability.
8. Variety of sizes and tolerances – Available in standard and precision grades.
9. Accurate squareness and parallelism – Ensures repeatable measurements.
10. Ease of use – Simple setup for inspection, marking, or machining tasks.
Customer Ratings
5.0/5
Based on 2 reviews
Customization product
I’ve been using this product for several months now, and it stands out as one of the best tools for customization in manufacturing. Whether you're working with metal, plastic, or composites, this tool adapts easily to different workflows and materials. Highly recommended for teams looking for precision, efficiency, and customization all in one.
Frequently Asked Questions
Q1. What is a V-Block used for?
A1. A V-Block is used to hold round or cylindrical workpieces securely for
machining, measuring, or inspection operations.
Q2. Why is it called a “V-Block”?
A2. The tool is named after its V-shaped groove, which supports cylindrical
parts firmly and prevents rolling.
Q3. What materials are V-Blocks made from?
A3. Common materials include hardened tool steel, alloy steel, or cast iron.
For inspection-grade tools, hardened steel with precision ground surfaces is
preferred.
Q4. What are magnetic V-Blocks?
A4. Magnetic V-Blocks have built-in magnets to hold ferromagnetic workpieces
without using mechanical clamps — useful for fast setups.
Q5. How are V-Blocks used in inspection?
A5. They hold round parts steady so that dimensions like diameter,
concentricity, and run-out can be accurately checked with gauges or
micrometers.
Q6. Can V-Blocks hold non-cylindrical parts?
A6. While designed for round workpieces, some custom V-Blocks can hold
hexagonal or irregular shapes depending on groove design.
Q7. What is the difference between a regular and a precision
V-Block?
A7. Precision V-Blocks have tighter manufacturing tolerances (on flatness,
squareness, and parallelism), making them ideal for metrology or tool-room work.
Q8. Do all V-Blocks come with clamps?
A8. Not always — standard sets usually include clamps, but magnetic types or
inspection-grade V-Blocks might not require them.
Q9. How do you maintain a V-Block?
A9. Keep surfaces clean and free from oil or chips, store in a dry environment,
and periodically check accuracy using a surface plate and square.
Q10. Where are V-Blocks commonly used?
A10. They are widely used in tool rooms, inspection departments, machine shops,
metrology labs, and manufacturing industries dealing with shafts, bearings, and
cylindrical parts.
