Grasping area analysis at the workstation: practical ergonomics and workstation design in VR

The screwdriver hangs too high, the KLT box sits two steps too far to the left, and the cycle starts to fluctuate. In assembly and logistics, every grasp determines quality, speed, and strain. If you want to improve ergonomics and workstation design noticeably, grasping area analysis at the workstation is a fast and reliable lever.

You shorten routes, avoid overstretching, and keep cycles more stable. Grasping paths get shorter, regripping becomes less frequent, and muscular fatigue decreases. At the same time, process reliability rises, because every hand movement becomes repeatable and inspections take place within the field of view.

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Why is grasping area analysis the key to ergonomics and workstation design?

A well-thought-out grasping area analysis assigns frequent handling to the main grasping area, the area where you work without bending your trunk and with bent elbows. Rarely needed parts can move to the extended grasping area. Anything beyond that belongs in the maximum grasping area and should only be used as an exception. This order of priority shortens routes, reduces force peaks, and makes workflows more robust.

For the assignment to work, you take body dimensions into account:

• Percentiles: You usually plan for the 5th to 95th percentile so that short and tall people can work safely.
• Sitting or standing: This affects the sensible working height, which for standing work is often in the range of 950 to 1,050 mm.
• Dominant hand: It determines which side the tools are on, so that frequent grasps work without regripping.
• Size of workpieces, trays, and small load carriers (KLT): It defines clearances, removal angles, and minimum distances.

Reachability alone is not enough. Fields of view determine whether inspection points lie in a natural line of sight without twisting the head. If you look at grip heights and lines of sight together, overhead grasps and deep bending disappear, and visual inspection stays reliable. This is how grasping area analysis connects mechanical reach with the demands of orientation and control.

The effect can be measured: when frequently used parts are consistently in the main grasping area, grasping and walking paths get shorter and regripping becomes less frequent. Ergonomic risks also drop measurably, with fewer overhead and low grasps per cycle and more favorable bending and twisting angles. This stabilizes quality and cycle time, because fewer evasive movements and posture changes disrupt the workflow.

You don't have to memorize standards for this, but clear references help. Ergonomic guidelines on body dimensions and postures define comfort ranges for grip heights and movement angles. REFA methods help assess grasp frequencies and handling times, and internal plant standards add clearances for tools and minimum distances. What matters is that you check these guidelines pragmatically at the real workstation.

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How do you put grasping area analysis into practice without getting lost in formalities?

1. Record the as-is state: Important measuring points are the working heights at assembly and inspection points, the distances between person, component, and containers, grip heights, removal angles, and the exact arrangement of KLTs, tools, and aids. Note the grasp frequency per cycle and mark routes, turns, and regrips in the workflow. Photos or short videos reliably show postures and grasp patterns.
2. Document leanly: A tape measure is enough for heights and distances. Sketches record positions without slowing down the workflow. Screenshots from a 3D or VR model make grip heights and clearances easy to see. What matters is comparability before and after the change.
3. Assess against a neutral grasping range: The focus is on elbows close to the body, no forced overhead grasps, and no deep bending. Pay attention to upper-body rotation, which costs time and causes strain. Check the lines of sight in parallel: inspection points should be within the field of view without the head or upper body twisting.
4. Derive concrete measures: Frequently grasped parts move inward and to a comfortable height, rarely used ones outward or up. - Assembly: It pays to move frequently used C parts 150 to 250 mm closer to the person and to shoulder width. A screwdriver that currently hangs above 1,250 mm can often be lowered to about 1,000 mm so that overstretching disappears. - Picking: A picking zone of about 700 to 1,200 mm speeds up grasping. You avoid low grasps below 600 mm by raising or tilting the boxes. - Setup stations: Here, arranging things along the direction of movement pays off. Frequently needed tools are close at hand on the side of the dominant hand, and rarely used aids don't block the core zone.
5. Validate in the cycle and prove it with metrics: Count hand movements and regrips per cycle before and after the change. Measure grasping and walking paths and the time share of handling. Record how often grasps happen above shoulder height or clearly outside the main grasping area, and add observations on bending and twisting angles. Simple risk scores that weight overhead, low, and twisting grasps show whether strain is decreasing. Keep before-and-after images and measurements so that decisions remain traceable and can be reused as a standard.

Typical pitfalls are:

• Planning for an average person only, even though body heights in the team vary
• Underestimated vertical reaches that hide overhead and low grasps
• Missing tool clearances that lead to collisions and angled removal
• Blocked lines of sight that make inspections harder
• No comparison of variants, even though the better solution is often only a few centimeters away
• Missing documentation, which causes knowledge to be lost

If you tackle these points deliberately, your measures hit the mark noticeably more often.

Linking this with REFA times adds clarity. If handling time drops because the main grasping area and working height fit, this shows directly in the share of the cycle time. This makes the effect of ergonomics work not just noticeable but measurable, and therefore tangible for the team, supervisors, and management.

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How does Halocline help you check grasping areas in VR?

Halocline is the planning platform for production layouts and workstations. You plan workstations and shopfloor layouts in VR or on the desktop, with no training required. You place tables, racks, KLTs, and tools directly, experience the arrangement at full size, and feel the reaches with your own body. This lets you see right away whether a screwdriver still hangs above shoulder height, whether fields of view are blocked, or whether collisions threaten during removal.

Grasping area avatars make the difference. They show the optimal and maximum grasping area as well as the working planes. You set gender and body height, and Halocline calculates the values according to DIN 33402-2 and DIN EN ISO 14738. If you work to other guidelines, you enter the dimensions yourself. If you place a short and a tall person at the workstation, you see whether the main grasping area and working height fit both. If a container sits too low for the short person, you spot it in VR right away and move it a few centimeters, without waiting for drawings or rebuilds.

You create variants as copies: you move frequently used parts by 150 to 250 mm, adjust working heights, or rearrange components by grasp frequency. The library of standard objects speeds up the setup. If you run through the workflow in VR and record it, the spaghetti diagram shows the routes, and the ergonomics analysis based on the key indicator method marks problematic object movements. During coordination, one person walks through the workstation in VR while the team follows the walkthrough in spectator mode on screen. This way, you decide based on images and numbers.

A scenario

The starting point is an assembly workstation. Two KLTs sit in the extended grasping area, and a screwdriver hangs at 1,250 mm. If the KLTs move to shoulder width and the screwdriver drops to around 1,000 mm, the relief is immediately noticeable in VR. The measurement confirms it: about 15 percent shorter grasping paths and around 20 percent fewer regrips. With grasping area avatars for a short and a tall person, it becomes clear that the solution works for different body heights, an important point for teams with a wide range.

Documentation happens along the way. With screenshots, dimensions, and exports, you document before and after for approvals, training, and plant standards. This keeps the decision traceable, and you transfer good solutions to other assembly workstations and picking areas. Siemens in Karlsruhe shows how much time this saves: there, workstation design with Halocline became 4x faster.

With consistent grasping area analysis, you put ergonomics and workstation design into practice effectively: less strain, shorter routes, stable cycles, and traceable quality, from the assembly workstation to picking.

Want to check the grasping areas at your workstation before you rebuild? Get started for free with Halocline Free and build your first workstation in 3D. For grasping area visualization, process analysis, and the ergonomics check, get in touch and we'll show you the right scope.