Name: Aluminium strut profile 80x120L
Brand: Bosch Rexroth
SKU: 3842993201

AL Modular System · C10 profiles

Aluminium strut profile 80x120L

The 80x120L has three 10 mm slots on each 120 mm side and two on each 80 mm side. Unlike tall, narrow profiles, it stays rigid sideways too (Iy = 192.8 cm⁴) and in torsion (It = 119 cm⁴): you use it for machine bases, gantries and posts loaded from several directions. You receive it as a full bar or cut to length.

Cross-section 80x120 mm10 slots C10Ix 389.2 cm⁴6.9 kg/m6070 mm bar or cut to length

Why choose it

Stiff in two directions

Ix = 389.2 cm⁴ and Iy = 192.8 cm⁴: withstands vertical and lateral loads.

Torsionally stiff

It = 119 cm⁴, much more than a tall, narrow profile like the 40x160L.

Ten slots

Three slots per 120 mm side and two per 80 mm side.

Choose it if…

The load comes from several directions.
You are building machine bases or gantries.
You want a lightweight profile that is rigid in torsion.

Choose another solution if…

You need more upright stiffness with less weight: Aluminium strut profile 40x160L →
A square profile is enough for you: Aluminium strut profile 80x80L →

Not sure which profile to choose? Open the guide with the profile table →

Technical data

Property	Value
Code	3842993201 (full bar) · 3842993201L (cut to length)
Section	80x120 mm, lightweight (L)
Slot	C10 (10 mm), 10 slots: 3 per 120 mm side, 2 per 80 mm side
Cross-sectional area	25.6 cm²
Weight	6.9 kg/m
Moment of inertia	Ix = 389.2 cm⁴ · Iy = 192.8 cm⁴
Section modulus	Wx = 64.9 cm³ · Wy = 48.2 cm³
Torsion	It = 119 cm⁴ · Wt = 29.1 cm³
Slot load capacity	7000 N with T-nut · 12000 N with sliding block (static limit, largest thread)
Bar length	6070 mm
Minimum cut length	50 mm
Alloy and finish	EN AW-6063 (AlMgSi) extruded, anodised E6/EV1, 12 µm
Cover cap	Cover cap 80x120, signal grey or black ESD

Ix applies with the 120 mm side vertical.

Downloads

MGE catalogue pages 15 Download PDF

Related products

Cover cap for profileCover cap 80x120

T-nutT-nut C10

Standard sliding blockSliding block C10

T-boltT-bolt C10

Aluminium strut profile 80x80LProfile 80x80L

Aluminium strut profile 80x160LProfile 80x160L, taller

Any other questions?Read the 11 FAQs →

Need help with your profile parts list?

Send us a sketch or the parts list: we will give you codes, accessories and cut lengths.

Request a quote Call +39 0434 572757

Specifications

Brand	Bosch Rexroth
Section mm	80x120
Slot mm	10
Cross-section area cm²	25.6
Moment of inertia Ix / Iy cm⁴	389.2 / 192.8
Section modulus Wx / Wy cm³	64.9 / 48.2
Max length mm	6070
Alloy	EN AW-6063 (Al MgSi)
Production method	Extrusion
Surface treatment	Anodising E6/EV1, 12 µm, 300 HV
Coefficient of thermal expansion	23.4 × 10⁻⁶ 1/K (+20…100 °C)
Tensile strength	245 N/mm²
Yield strength	195 N/mm²
Elongation at break	10%
Modulus of elasticity E	70000 N/mm²
Brinell hardness	75 HB
Straightness tolerance	max 0.75 mm/m
Torsion tolerance	max 0.70 mm/m
Torsion factor It cm⁴	119.00
Torsion factor Wt cm³	29.10
Min length mm	50
Length	6070
Weight	6.9 kg/m
Material	Anodized aluminium

The 40x160L is stiffer upright (Ix = 466.7 cm⁴) and lighter (5.5 kg/m), but sideways it has only 37.2 cm⁴ and in torsion 25.8 cm⁴. The 80x120L has Iy = 192.8 cm⁴ and It = 119 cm⁴: choose it when the load comes from several directions.

The dedicated 80x120 cover cap in PP, signal grey or black ESD: a single cover cap covers the whole cross-section.

From the side it is much less rigid (Iy = 37.2 cm⁴) and in torsion it has It = 25.8 cm⁴. If the load comes from several directions, consider the 80x120L or 80x160L, which are rigid sideways too.

It is the width of the profile slot and determines which accessories you use. Slot C6 (6 mm) is for 20 series profiles, C8 (8 mm) for the 30 series, C10 (10 mm) for profiles from the 40 series upwards. Nuts, screws, brackets and cover caps are chosen by slot: each accessory's product page shows the right one.

Yes. You can order the full bar or the piece cut to the length you need: we do the cutting ourselves, in our workshop. Each profile's product page shows the maximum bar length and the minimum cut length.

Look at the moments of inertia Ix and Iy: the higher they are, the less the profile deflects under load. For the same section, “L” profiles are lightened and deflect a little more. For long spans or high loads move to a larger section or a tall profile (e.g. 45x90 instead of 45x45). If you send us drawing and loads, we will check the choice.

The T-nut is inserted from the front into the slot, even in an assembled structure, and positions itself when you tighten the screw: it is the standard choice for fixing accessories. The sliding block withstands higher forces, but normally has to be inserted from the profile end before closing the frame; spring versions stay where you put them.

The simplest way is the bracket, which joins two profiles at 90° with screws and nuts in the slot, without machining. For end, T, 45° or three-way connections there are dedicated connectors, some of which require profile machining as stated on their product page.

Yes, for several accessories (for example cover caps, hinges and nuts) there are conductive ESD versions, indicated in the name or variant. Tell us which EPA area you work in and we will confirm the components to use.

On each product page you will find the MGE catalogue pages to download as PDF, with dimensioned drawings and technical data; the Specifications tab shows the data for the variant you have chosen.

Yes. Send us the parts list or a sketch with dimensions: we give you codes, quantities and cut lengths and prepare the kit with profiles already cut and the accessories.