Clamping planks with T-slots, available in either steel or cast iron, allow modular fixtures to be mounted with extreme rigour. In the Bonanomi precision mechanical workshop, we manufacture them in sizes from 200x200 up to 10,000x2,500 mm.

Also known as T-slot plates, base plates or fixture plates, clamping planks are part of the clamping systems for machine tools and are used for the workholding of mechanical parts on machine tools.

T-Slot Clamping Planks for Precision Mechanics 

Clamping planks are precision mechanics products machined from rolled steel or cast iron plates. They are machined for clamping by means of T-slots or grids of threaded holes, to which hardened bushings (zero point) can be added for greater positioning accuracy.

The thickness of the planks varies according to production requirements and the size of the T-slots. Want to know which material best suits your clamping planks? Read our article on the differences between cast iron and steel.

Modular and Customised Clamping Planks

Clamping planks manufactured by the Bonanomi precision mechanical company can be produced for modular use: you start with a single module and then add others of the same type or with a different layout.

The product can also be used to customise existing surfaces, recreating a support surface according to functional specifications as workpiece geometries change or as the products to be machined vary. The planks can be used on both horizontal and vertical machine tables (for example, to recreate the work surface of a large 3000x1000 clamping square), on 3 to 6 axis machining centres or on palletised machining centres.

Counterbored holes are used to fix the planks to the machine table, and the planks can be supplied with alignment keys for geometric alignment with the X and Y axes.

On request, we can also supply vacuum surfaces such as vacuum tables or hydraulic clamping systems.

The difference from Clamping Plates

The main difference from our clamping plates, the flagship of our production, is the reduced thickness and the absence of levelling systems. If required, these can be reproduced with special levelling systems.

Clamping planks are available in sizes from 200x200 up to 10,000x2,500 mm.

As an alternative to our standard precision mechanics products shown in the catalogue, Bonanomi can manufacture any size, using any material, to best meet the needs and requirements of the end customer. Contact us to request custom clamping planks.

Bonanomi Clamping Planks in the Express Shop

Request Bonanomi clamping planks in our Express Shop: choose the size you are interested in and wait for our formal quotation.

No clamping planks are currently available, but you can still contact us to tell us about your requirements!

Not Just Clamping Planks: Discover Other Bonanomi Products

The Bonanomi precision mechanical company offers third-party machining services and manufactures clamping cubes and towers, clamping squares and clamping plates, surface plates, control blocks and cylinders, control rules, dressing plates, support and levelling columns, test benches and parallel boxes.

Frequently Asked Questions

What are clamping planks and what are they used for?

Clamping planks are precision mechanics products machined from rolled steel or cast iron plates. Thanks to their T-slots or grids of threaded holes, they allow modular fixtures to be mounted with extreme rigour.

What is the difference between clamping planks and clamping plates?

Clamping planks are thinner than clamping plates and are not equipped with levelling systems. On request, clamping planks can also be fitted with special levelling systems.

Which clamping systems are available on the planks?

The planks can be machined with T-slots or with grids of threaded holes. Hardened zero point bushings can be added to the holes to ensure greater positioning accuracy.

Which sizes and materials are available?

Bonanomi manufactures clamping planks from 200x200 up to 10,000x2,500 mm, in steel or cast iron. The planks are modular: you start with a single module and can add others with the same layout or a different one. On request, we manufacture custom clamping planks in any size and material.