If you’re not sure which chair to buy for your facility or commercial production environment, you should start with the application. Defining how and where the chair will be used narrows down choices and solutions.
What are Industrial Task Chairs?
Health Issues and Ergonomic Seating
A well-designed industrial task chair chair for the operator is one of the most important parts of a work station. It can favorably affect posture, circulation, the amount of effort required to maintain a position, and the amount of pressure on the spine.
Any job or activity that requires a fixed position over a long period of time can cause musculoskeletal discomfort. Poor job and workplace design contribute to many reported discomforts which are also found in other occupations.
A key to preventing such discomforts is to assume a range of comfortable positions and to have adjustable furniture, such as the chair, display table and keyboard support. However, the degree of adjustability for any furniture and visual display depends on how long and for what purpose they will be used. Prolonged work in the same position, whether seated or standing, can cause discomfort. Where possible, movement should be incorporated into the task to prevent discomfort and fatigue.
Benefits of Proper Ergonomic Seating
10 Rules for Choosing the Right Ergonomic Chair
Task chairs should have pneumatic seat height adjustment. This allows the seat height to be easily adjusted, acts as a shock absorber when sitting down and allows the chair to swivel so you don’t have to twist your back when reaching for things. A brand name gas lift from one of the original manufacturers is advisable, as many lower priced versions are unproven at best.
The seat pan should tilt forward and backward, should lock into any position to provide the variation in postures required by the human body, and have a tilt tension control if the seat has a free float mode.
- The seat size must allow the user to sit back against the backrest while leaving approximately a three-finger width of clearance between the back of the knees and front of the seat.
- The seat should have a waterfall (curves downward) front edge to reduce pressure on the veins beneath the thighs and should subtly curve up at the sides to redistribute the user’s weight away from their seat bones.
- The seat should not be ‘dished out’ (dip inward in the center), which puts pressure on the veins beneath the thighs and should not rise up at the back middle portion of the seat pan, as that puts extra pressure on the base of the spine.
- The seat pan depth should be adjustable.
- The backrest must have lumbar support built into its structure, not just the foam, as foam alone cannot provide the force necessary to re-position the lumbar spine back into its natural curvature.
- The backrest must also have lateral curves to support the upper body, so as to reduce the amount of muscle activity required to keep it in the upright posture.
- The backrest should be covered with foam to avoid a hard structure that comes in direct contact with the user’s back. Hard edges cause discomfort for some users.
- The backrest should be the correct size for the length of the person’s back.
- Allow the user to pull their chair close to their work surface.
- Support the weight of the user’s arms to reduce stress on the shoulders and neck.
- Provide guidance and support when getting in and out of the chair.
What size should an ergonomic task chair be?
Seating Height Chart for Ergonomic Task Seating
|User Height||Seat Height||Elbow (Armrest) Height||Eye (Monitor) Height|
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