---
title: "Round Aluminum Extrusion"
slug: "round-aluminum-extrusion"
updated: 2025-03-17T19:58:58Z
published: 2025-03-17T19:58:58Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vention.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Round Aluminum Extrusion

## Overview

Featuring M8 x 1.25 mm tappable ends, a lightweight design, and anti-rotation holes, the round extrusion is launching alongside a new part ecosystem that will let you build entirely new types of Vention assemblies.

Round extrusion components are compatible with all existing Vention parts. Combine them with 45 x 45 mm, 45 x 90 mm, and 90 x 90 mm T-slot profiles to create mounting arms, custom end-of-arm tooling, rotary systems, and ergonomic handles.

## Round extrusion applications

### Mounting arms

Round extrusions provide a flexible and customizable solution for mounting cameras, scanners, or other sensors. Lightweight and low-profile, these extrusions are perfect for mounting parts at different angles or in tighter spaces.

| ![Two cameras, mounted with round extrusions on adjustable arms.](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-extrrusion-camera-mount.png) ***Two cameras, mounted with round extrusions on adjustable arms.*** |
| --- |

### Custom end-of-arm tooling

The robot’s payload includes the weight of end-of-arm tooling, so keeping weight low is a top priority for custom tooling design. With its low weight and high strength, the new round extrusion ecosystem lets you maximize load capacity.

| ![Vacuum gripper (custom end-of-arm tooling example).](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-extrusion-end-of-arm-tool.png) ***Vacuum gripper (custom end-of-arm tooling example).*** |
| --- |

### Rotary work stations

Construct rotating assemblies using the round extrusion pillow bearing ([MO-BR-007-0001](https://vention.io/parts/20mm-pillow-bearing-self-aligning-1090)).

These bearings are particularly helpful in applications like assembly jigs that require access on all sides. The self-aligning plastic bushings in each pillow bearing provide a maintenance-free solution.

| ![Rotating assembly supported by two pillow bearings.](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-extrusion-rotisserie-cart.png) ***Rotating assembly supported by two pillow bearings.*** |
| --- |

### Ergonomic handles

Round extrusions are great in any application where ergonomics are a factor, such as door handles. Mount round extrusions, using their tapped ends, directly onto Vention assembly plates, gussets, and tooling plates.

| ![Sliding door handle composed of three round extrusions linked together.](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-extrusion-door-handle.png) ***Sliding door handle composed of three round extrusions linked together.*** |
| --- |

  

## Round extrusion ecosystem

A [new ecosystem of parts](https://vention.io/parts-library?category=SF&sub_category=RX#f-ec_category=SF%7CSF-RX) supports the round extrusion, although current parts are also fully compatible.

### Round extrusion

Made of strong, lightweight 6005-T5 aluminum, and anodized in Vention blue—like all our extrusions—round extrusions ([ST-EXT-008-XXXX](https://vention.io/parts/20mm-od-round-aluminum-extrusion-180mm-1098)) have a tough, wear-resistant finish. They’re easy to attach to standard Vention parts, thanks to a center hole that can be tapped for an M8 bolt.

| ![Round extrusion section.](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-extrusion-section-drawing.png) ***Round extrusion section.*** |
| --- |

| **Diameter** | 20mm |
| --- | --- |
| **Material** | 6005-T5 |
| **Yield stress** | 240 MPa |
| **Area moment of inertia** | 6469.72 mm4 |
| **Torsional constant** | 10,492 mm4 |
| **Profile area** | 208.47 mm2 |
| **Weight per 45 mm length** | 25 g |

Table 1: round extrusion specifications

### Round-to-round angle connector

Connect two round extrusions together at various angles with the round-to-round angle connector ([ST-GP-004-0005](https://vention.io/parts/round-to-round-angle-connector-1093)). Two pins on each connector half prevent the extrusion from rotating axially—relative to the connector—crucial for a secure connection that won’t come loose. To connect two round extrusions with the angle connector:

1. Tap one end of each extrusion.
2. Attach a connector half to each tapped extrusion end.

| ![](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-to-round-step-1.png) |
| --- |
3. Fasten the two connector halves together with one M8 x 16mm Screw (HW-FN-003-0014) screw and one M8 nut (HW-FN-031-0001).

| ![](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-to-round-step-2.png) |
| --- |

| **Max axial torque** | 15 Nm |
| --- | --- |
| **Max joint torque*** | 5 Nm |
| **Connection angle (measured from parallel)** | ±75° |

Table 2: round-to-round angle connector specifications

*Ideally, both ends of a round extrusion should be supported. If this is not possible, limit the torque placed on the joint (max 5 Nm) to prevent the joint from slipping. This can be done by keeping the load small or the lever arm short

### Round extrusion holder

If you need to attach your round extrusion assembly to a square extrusion, such as the Vention 45-mm square extrusion, one solution is the round extrusion holder ([ST-SP-004-0001](https://vention.io/parts/round-extrusion-holder-1094)).

It has two mounting options: perpendicular, or parallel to the square extrusion. When mounting perpendicularly, you can use the built-in pin to hold the extrusion in one of four positions.

| ![Round extrusion holder.](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/round-extrusion-holder-assembly.png) ***Round extrusion holder.*** |
| --- |

**Note:** Round extrusion holder will resist a max of 12.5 Nm of torque before slipping.

### Self-aligning pillow bearing and shaft collar

Round extrusions, with their accompanying pillow bearings and shaft collars, can be used to great effect when designing for rotary applications.

Pillow bearings ([MO-BR-007-0001](https://vention.io/parts/20mm-pillow-bearing-self-aligning-1090)) are self-aligning plastic units that require no additional lubrication. Shaft collars ([HW-SC-001-0003](https://vention.io/parts/collar-for-20mm-round-extrusion-1092)) hold the shaft in place axially.

| ![Shaft, bearing and collar assembly.](https://cdn.document360.io/3eee4d14-5ca0-4ea6-b426-1c19393e6a5e/Images/Documentation/pillow-bearing-and-shaft-collar-with-callouts.png) ***Shaft, bearing and collar assembly.*** |
| --- |

**Note:** Each shaft requires two shaft collars for axial fixing.

| **Max axial force** | 5000 N |
| --- | --- |
| **Max radial force** | 10000 N |
| **Max rotational speed** | 2880 deg/s |
| **Max angular misalignment permitted** | ±20° |

Table 3: pillow bearing specifications