Hapo FRONT – Shoulder Exoskeleton for Work With Arms in Front

The Hapo FRONT exoskeleton is designed for repetitive “arms in front” movements, that is, all tasks done with arms stretched or half-stretched at chest height. It supports the shoulders, arms and elbows to lastingly relieve the upper limbs, which are particularly loaded in these held positions.

When the arms are held in front for long periods, the shoulder muscles work statically to fight gravity. This continuous load generates rapid fatigue and, in the long term, promotes pain and shoulder musculoskeletal disorders (MSDs). The Hapo FRONT returns part of this effort through its leaf springs, reducing the load borne by the shoulders with every movement.

Many trades are concerned. In industry and production, it accompanies assembly, screwing, quality control and all bench tasks done with arms in front. In logistics, it relieves sorting, packing and wrapping operations. In crafts, it helps with precision work held out in front: cutting, sanding, assembling, small repairs.

Production lines and repetitive workstations are prime areas of application: wherever the same movement, arms forward, is repeated hundreds of times a day, the Hapo FRONT brings measurable relief. It also suits maintenance activities and certain care or service tasks involving prolonged horizontal arm holding.

The common point of all these uses is the forward arm posture, distinct from work with arms overhead (for which the Hapo UP is more suitable) and from head-up work (covered by the Hapo NECK). Correctly identifying the workstation's dominant posture is essential to choosing the right model: the Hapo FRONT specifically targets efforts at chest height and in front.

Its value is reinforced by the possibility of adjusting the assistance level: a standard version and more supportive versions let you adapt the help to the real load on the arms and to the user's feel. This modularity helps target the need of each workstation precisely.

As with any exoskeleton, the Hapo FRONT is part of a prevention approach that complements ergonomic workstation design, task rotation and training. It does not remove effort, but it lightens a significant part of it, helping reduce shoulder fatigue and preserve the upper limbs over time.

In short, the Hapo FRONT is the ally of repetitive arms-in-front movements in industry, logistics, crafts and maintenance: it supports shoulders, arms and elbows to limit fatigue and prevent upper-limb MSDs.

The Hapo FRONT exoskeleton offers an adjustable assistance level, which lets it adapt to the real load on the arms and each user's feel. The standard version provides assistance of up to about 2 kg per arm, and more supportive versions (on the order of 4 kg and 6 kg) are available for greater needs.

This assistance is delivered by leaf springs that return part of the effort at the shoulders and arms when they are held in front. In practice, the device “carries” a fraction of the weight of the arms and the tools held, thereby relieving the shoulder muscles that, without it, work continuously against gravity.

The ability to choose the assistance level is a real advantage. Not all tasks need the same support: precision work with light tools does not call for the same help as an operation with heavier tools. By adapting the assistance to the load, you avoid both undersizing (insufficient support) and oversizing (assistance too strong, which could hinder the movement).

The right setting is important for comfort and effectiveness. Well-calibrated assistance relieves the shoulders without disturbing precision or freedom of movement; it should accompany the movement, not constrain it. During a trial at the workstation, it is therefore recommended to test the suitable level with the users concerned, taking into account the tools handled and the duration of the arms-forward phases.

It should be stressed that this assistance is entirely mechanical and passive: it depends on no battery and stays constant throughout the shift. The chosen level of support is available at all times, with no drop in power, which guarantees regular help over the whole working day.

The expected benefit is a reduction in shoulder and arm fatigue on repetitive chest-height tasks. By lightening static effort, the Hapo FRONT helps limit the accumulation of tension responsible, in the long run, for pain and upper-limb musculoskeletal disorders (MSDs).

As with any exoskeleton, it is complementary support: it replaces neither workstation design, nor task rotation, nor good ergonomic practice. But by providing adjustable, well-targeted assistance, it is an effective tool for preserving the shoulders.

In short, the Hapo FRONT offers adjustable assistance, about 2 kg per arm in the standard version and up to 4 or 6 kg depending on the version, to match the needs of each workstation precisely and lastingly relieve the upper limbs.

The Hapo FRONT is a passive exoskeleton. It works solely through leaf springs, with no motor, no battery and no electronics. The support of the shoulders, arms and elbows during “arms in front” work is therefore purely mechanical in origin: the springs return part of the effort at the moment the arms are held forward.

This passive technology provides constant, always-available assistance. The chosen level of support (standard, or more supportive versions) stays identical from the start to the end of the shift, without depending on a battery's charge. For repetitive tasks that span the whole day, this regularity is a decisive asset.

The absence of a motor brings the usual benefits of Hapo passive exoskeletons. There is no recharging to manage, so no electrical logistics or service interruption. The device is lighter than a motorized model (about 1.3 kg) and more robust, with good tolerance to dust, humidity and temperatures from -10 °C to +40 °C.

Maintenance is simplified too. With no electronics, there is no update, no sensor recalibration, no cell to replace: maintenance comes down to cleaning the textile and checking the straps and springs. This sobriety reduces running cost and limits downtime, a clear advantage for deployments on production lines.

On safety and simplicity, passive eliminates any electrical risk and any complex control. The user puts on the device, possibly selects the suitable assistance level, and the support works automatically as soon as the arms are held in front. This ease promotes adoption on repetitive workstations, where acceptance by operators is crucial.

A motorized model could offer stronger, controllable assistance, but with more weight, limited range and a higher budget. To relieve the shoulders and arms on repetitive chest-height movements, the Hapo FRONT's passive, adjustable assistance is the best balance between effectiveness, comfort and reliability.

In conclusion, the Hapo FRONT is a device that is entirely mechanical, battery-free and easy to maintain. Its passive design makes it a lasting tool for the prevention of musculoskeletal disorders of the upper limbs.

The Hapo FRONT shoulder exoskeleton weighs about 1.3 kg. For a device that supports the shoulders, arms and elbows during “arms in front” work, this weight stays contained and well distributed, which is essential for comfortable wear on long repetitive tasks.

This lightness comes from the device's passive design: with no motor or battery, the weight is limited to the structure, the leaf springs and the textile interfaces. The Hapo FRONT thus brings real assistance to the upper limbs without turning the equipment into extra load weighing on the body.

The distribution of weight matters as much as its absolute value. The device rests on the chest and transfers the effort in a way that avoids pressure points on the shoulders. Properly adjusted, it accompanies the movement without hindrance: the user feels the relief in the arms, not the presence of bulky equipment.

To put this weight in context, the Hapo FRONT measures around 41 cm in length, 26 cm in width and 105 cm in height, its structure running up along the trunk to support the arms in front. Despite this size, the whole stays light and preserves the freedom of movement needed for precision gestures.

Lightness is a key factor in acceptance on repetitive workstations. A device you can keep on for hours without extra fatigue will actually be worn; and it is regular use that reduces the load on the shoulders and prevents pain. Since the Hapo FRONT contains no motor, it does not heat up and stays silent throughout the shift.

This moderate weight takes nothing away from the effectiveness of the assistance, which can be adjusted (standard version up to about 2 kg per arm, more supportive versions available). Designed and made in France, the device is also built for intensive professional use, with springs sized for many cycles.

In conclusion, with its well-distributed 1.3 kg, the Hapo FRONT offers effective support of the shoulders and arms in a light and comfortable format, suited to repetitive chest-height movements: a concrete asset for the prevention of musculoskeletal disorders of the upper limbs.

The Hapo FRONT exoskeleton has a 2-year warranty. The warranty covers spring breakage and manufacturing defects in the textile elements, the two key components of its operation. It reflects the French manufacturer Ergosanté's confidence in the durability of this device dedicated to the upper limbs.

The leaf springs, which provide support for the shoulders and arms, are designed to withstand a very large number of cycles — “arms in front” movements often number in the hundreds a day — without loss of effectiveness. The textile and straps are selected to endure daily wear, friction and washing. This manufacturing quality is the first guarantee of a product made to last.

To activate coverage, it is generally recommended to register the product after purchase and keep the invoice. The warranty applies for use in accordance with the instructions: respect for conditions of use (dry environment, temperature from -10 °C to +40 °C), suitable adjustment of the assistance level and regular maintenance. Damage linked to abnormal use, alteration of the device or lack of maintenance is excluded.

The Hapo FRONT's passive design directly contributes to its reliability. With no motor, battery or electronics, the main causes of failure of motorized exoskeletons disappear: no cell that degrades, no board to replace, no software to maintain. The device is made up of mechanical and textile elements, simpler to maintain and keep in good condition over time.

This robustness has a real economic impact. For a company equipping production lines or repetitive workstations, equipment that is guaranteed for two years, reliable and easy to maintain secures the investment and limits costs linked to breakdowns and downtime. The Hapo FRONT also benefits from the Made in France label and the CE Machinery 2006/42/EC and ISO 9001 certifications, guarantees of safety and consistency in manufacturing.

In case of a problem during the covered period, contact the reseller or the manufacturer, giving the serial number and the nature of the defect. Handling is carried out according to the manufacturer's conditions, which takes care of follow-up, supply of parts and, where applicable, repair or replacement of the device.

In short, the Hapo FRONT's 2-year warranty, combined with its French manufacturing and certifications, reflects a product designed to last and to lastingly support the prevention of musculoskeletal disorders of the shoulders and arms.