Dark grey fabric operator office chair featuring a cushioned backrest and seat, height-adjustable swivel base and black five-star base with castor wheels, isolated on a white background.

Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Armless Grey Fabric Operator Chair

Focus on the task at hand with a chair that prioritises functionality over frills. The armless design of this task chair provides total freedom of movement, allowing it to slide under any worktable or fit into compact cubicles without obstruction, making it a favorite for high-density office layouts.

The Cobolt Advantage

  • Free-Floating Back Technology: Experience a more dynamic sitting experience. The backrest can be set to follow your movements or locked at a specific angle, ensuring continuous lumbar contact as you transition between different desk tasks.
  • Independent Back Rake: Unlike standard tilt chairs, this model allows you to adjust the angle of the backrest independently of the seat. This provides a "back rake" function that can be fixed in multiple positions to support an upright or slightly reclined posture.
  • Space-Saving Armless Profile: By removing armrests, this chair significantly reduces its footprint. It is the ideal specification for narrow desks, multi-user IT benches, and reception desks where staff need to move frequently and sit close to the work surface.

Adjustability & Durability

  • Manual Back Height Control: Tailor the lumbar support to your height. The backrest can be raised or lowered manually, ensuring the contoured fabric "cups" your spine at exactly the right point to prevent lower back strain.
  • Industrial-Grade Grey Fabric: The seating surfaces are upholstered in a heavy-duty, commercial-grade grey fabric that is resistant to pilling and abrasion, maintaining a professional look even after years of daily use.
  • Precision Gas Lift: The high-quality gas strut provides a smooth height transition (420-535mm), allowing the user to maintain a 90-degree angle at the knees for optimal pelvic health.

The Cobolt Standard

  • Free Mainland UK Delivery: We manage all transport logistics to ensure your departmental budget goes further. Every task chair includes Free Mainland UK Delivery for total cost clarity.
  • 50 Years of Mastery: With five decades of B2B heritage, we select essential furniture that is engineered to survive the relentless, multi-user reality of the UK public and private sectors.
  • UK Design Principles: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Where is the Grey Armless Task Chair best utilised?

The Grey Armless Operator Chair is the primary specification for School Reception Desks, University Study Carrels, and Administrative Touchdown Zones. Its armless design is particularly beneficial for Laboratories and Drafting Stations where unrestricted arm movement is required.

Key Features

  • Independent Back Rake — Back tilt control that operates separately from the seat, lockable in various angles for a bespoke fit.
  • Back Height Adjustment — Allows the user to position the lumbar support perfectly against the spine's natural curve.
  • Free-Floating Back Mechanism — Backrest moves with the user for dynamic support or can be fixed in a static position.
  • Space-Efficient Armless Design — Perfect for narrow workstations and ensuring the chair tucks completely under the desk.
  • 110kg Maximum Capacity — Robustly built for commercial environments and tested for daily eight-hour usage.
  • Durable Grey Fabric Upholstery — A neutral, professional finish that is easy to maintain and highly resistant to wear.
  • 360-Degree Swivel Base — Reinforced black nylon base with smooth-gliding castors for effortless mobility across the office.
  • Designed in the UK — Engineered to meet the specific functional and ergonomic standards of the British market.
Warranty icon
1-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Institutional Estates

  • Commercial Grade Focus: We only supply furniture intended for the demanding conditions of modern academies and corporate offices, steering clear of light-duty retail products.
  • Ergonomic Versatility: By offering independent back and height controls, we ensure a single chair model can accommodate a diverse workforce.
  • Logistical Efficiency: Dispatched using specialised commercial networks to ensure your furniture arrives safely, on time, and with minimal transit damage.

Certified Security. Proven Performance.

  • The Gas Lift Mechanism is rigorously tested for high-frequency use, ensuring the seat height remains stable and secure under a 110kg load.
  • The Back Rake Lock is a critical safety feature, ensuring the backrest provides a fixed, stable platform for focused typing tasks once the desired angle is chosen.
  • Features a Contoured Lumbar Backrest, designed to prevent slouching and reduce the long-term risk of lower back discomfort in sedentary roles.
  • The Armless Architecture prevents "snagging" risks in high-traffic environments or reception areas where quick egress may be required.
  • This chair is defended by our 1-year commercial warranty, which covers all mechanical faults and structural components under standard daily usage.

An essential armless operator chair featuring a grey fabric finish, independent back tilt, and manual back height adjustment.

Weight Capacity
110kg
Chair Weight
9kg
Guarantee
1 Year
Specification
Dimensions
Purpose / Benefit
Total Chair Height
975mm - 1085mm
High-back profile provides comprehensive support through the mid-spine
Seat Height
420mm - 535mm
Wide range ensures correct leg positioning for various user heights
Seat Width & Depth
488mm(W) x 425mm(D)
Deep seat pan designed for multi-hour comfort in focus-driven roles
Backrest Dimensions
480mm(H) x 455mm(W)
Broad backrest area for reliable spinal support during administrative tasks
Total Chair Width
480mm
Compact armless width allows for high-density seating in IT labs and offices
Adjustment Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple positions
Backrest Feature
Free-Floating Back
Can be set to follow user movement for dynamic lumbar support
Finish
Commercial Grey Fabric
Tough, breathable material designed for high-traffic public sector environments
Origin
Designed in the UK
Refined for the ergonomic standards and space requirements of British estates

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Frequently Asked Questions

1. What is the benefit of a "no arms" task chair?

A: Armless chairs provide total freedom of movement and allow you to sit much closer to your desk. They are also ideal for space-saving, as the chair can be tucked completely under the worktop when not in use.

2. What does "Free Floating Back" mean?

A: This means the backrest isn't fixed in one place. It can be set to move with you as you lean forward or back, providing continuous lumbar support through your range of motion.

3. Can I lock the backrest at a specific angle?

A: Yes. The "back rake" adjustment allows you to tilt the backrest independently of the seat and lock it into your preferred position for maximum comfort.

4. Is the backrest height adjustable?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back.

5. What is the weight limit for this operator chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the standard for professional office seating.

6. Is the fabric easy to keep clean?

A: The commercial grey fabric is very durable. For daily maintenance, we recommend light vacuuming, and for spills, it can be cleaned with a damp cloth and mild non-abrasive cleaner.

7. Is this chair difficult to assemble?

A: Not at all. It arrives with clear instructions and all necessary fixings. Most users can have it built and ready for use in under 10 minutes.

8. What does the 1-year warranty cover?

A: Our 1-year commercial warranty covers all mechanical and structural components, including the gas lift, back tilt adjustment, and castor wheels, against manufacturing defects.

Overview

Product Overview: Armless Grey Fabric Operator Chair

Focus on the task at hand with a chair that prioritises functionality over frills. The armless design of this task chair provides total freedom of movement, allowing it to slide under any worktable or fit into compact cubicles without obstruction, making it a favorite for high-density office layouts.

The Cobolt Advantage

  • Free-Floating Back Technology: Experience a more dynamic sitting experience. The backrest can be set to follow your movements or locked at a specific angle, ensuring continuous lumbar contact as you transition between different desk tasks.
  • Independent Back Rake: Unlike standard tilt chairs, this model allows you to adjust the angle of the backrest independently of the seat. This provides a "back rake" function that can be fixed in multiple positions to support an upright or slightly reclined posture.
  • Space-Saving Armless Profile: By removing armrests, this chair significantly reduces its footprint. It is the ideal specification for narrow desks, multi-user IT benches, and reception desks where staff need to move frequently and sit close to the work surface.

Adjustability & Durability

  • Manual Back Height Control: Tailor the lumbar support to your height. The backrest can be raised or lowered manually, ensuring the contoured fabric "cups" your spine at exactly the right point to prevent lower back strain.
  • Industrial-Grade Grey Fabric: The seating surfaces are upholstered in a heavy-duty, commercial-grade grey fabric that is resistant to pilling and abrasion, maintaining a professional look even after years of daily use.
  • Precision Gas Lift: The high-quality gas strut provides a smooth height transition (420-535mm), allowing the user to maintain a 90-degree angle at the knees for optimal pelvic health.

The Cobolt Standard

  • Free Mainland UK Delivery: We manage all transport logistics to ensure your departmental budget goes further. Every task chair includes Free Mainland UK Delivery for total cost clarity.
  • 50 Years of Mastery: With five decades of B2B heritage, we select essential furniture that is engineered to survive the relentless, multi-user reality of the UK public and private sectors.
  • UK Design Principles: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Features & Benefits

Where is the Grey Armless Task Chair best utilised?

The Grey Armless Operator Chair is the primary specification for School Reception Desks, University Study Carrels, and Administrative Touchdown Zones. Its armless design is particularly beneficial for Laboratories and Drafting Stations where unrestricted arm movement is required.

Key Features

  • Independent Back Rake — Back tilt control that operates separately from the seat, lockable in various angles for a bespoke fit.
  • Back Height Adjustment — Allows the user to position the lumbar support perfectly against the spine's natural curve.
  • Free-Floating Back Mechanism — Backrest moves with the user for dynamic support or can be fixed in a static position.
  • Space-Efficient Armless Design — Perfect for narrow workstations and ensuring the chair tucks completely under the desk.
  • 110kg Maximum Capacity — Robustly built for commercial environments and tested for daily eight-hour usage.
  • Durable Grey Fabric Upholstery — A neutral, professional finish that is easy to maintain and highly resistant to wear.
  • 360-Degree Swivel Base — Reinforced black nylon base with smooth-gliding castors for effortless mobility across the office.
  • Designed in the UK — Engineered to meet the specific functional and ergonomic standards of the British market.
Warranty icon
1-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Institutional Estates

  • Commercial Grade Focus: We only supply furniture intended for the demanding conditions of modern academies and corporate offices, steering clear of light-duty retail products.
  • Ergonomic Versatility: By offering independent back and height controls, we ensure a single chair model can accommodate a diverse workforce.
  • Logistical Efficiency: Dispatched using specialised commercial networks to ensure your furniture arrives safely, on time, and with minimal transit damage.

Safety & Warranty

Certified Security. Proven Performance.

  • The Gas Lift Mechanism is rigorously tested for high-frequency use, ensuring the seat height remains stable and secure under a 110kg load.
  • The Back Rake Lock is a critical safety feature, ensuring the backrest provides a fixed, stable platform for focused typing tasks once the desired angle is chosen.
  • Features a Contoured Lumbar Backrest, designed to prevent slouching and reduce the long-term risk of lower back discomfort in sedentary roles.
  • The Armless Architecture prevents "snagging" risks in high-traffic environments or reception areas where quick egress may be required.
  • This chair is defended by our 1-year commercial warranty, which covers all mechanical faults and structural components under standard daily usage.

Specification Dimensions

An essential armless operator chair featuring a grey fabric finish, independent back tilt, and manual back height adjustment.

Weight Capacity
110kg
Chair Weight
9kg
Guarantee
1 Year
Specification
Dimensions
Purpose / Benefit
Total Chair Height
975mm - 1085mm
High-back profile provides comprehensive support through the mid-spine
Seat Height
420mm - 535mm
Wide range ensures correct leg positioning for various user heights
Seat Width & Depth
488mm(W) x 425mm(D)
Deep seat pan designed for multi-hour comfort in focus-driven roles
Backrest Dimensions
480mm(H) x 455mm(W)
Broad backrest area for reliable spinal support during administrative tasks
Total Chair Width
480mm
Compact armless width allows for high-density seating in IT labs and offices
Adjustment Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple positions
Backrest Feature
Free-Floating Back
Can be set to follow user movement for dynamic lumbar support
Finish
Commercial Grey Fabric
Tough, breathable material designed for high-traffic public sector environments
Origin
Designed in the UK
Refined for the ergonomic standards and space requirements of British estates

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Product FAQs

Frequently Asked Questions

1. What is the benefit of a "no arms" task chair?

A: Armless chairs provide total freedom of movement and allow you to sit much closer to your desk. They are also ideal for space-saving, as the chair can be tucked completely under the worktop when not in use.

2. What does "Free Floating Back" mean?

A: This means the backrest isn't fixed in one place. It can be set to move with you as you lean forward or back, providing continuous lumbar support through your range of motion.

3. Can I lock the backrest at a specific angle?

A: Yes. The "back rake" adjustment allows you to tilt the backrest independently of the seat and lock it into your preferred position for maximum comfort.

4. Is the backrest height adjustable?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back.

5. What is the weight limit for this operator chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the standard for professional office seating.

6. Is the fabric easy to keep clean?

A: The commercial grey fabric is very durable. For daily maintenance, we recommend light vacuuming, and for spills, it can be cleaned with a damp cloth and mild non-abrasive cleaner.

7. Is this chair difficult to assemble?

A: Not at all. It arrives with clear instructions and all necessary fixings. Most users can have it built and ready for use in under 10 minutes.

8. What does the 1-year warranty cover?

A: Our 1-year commercial warranty covers all mechanical and structural components, including the gas lift, back tilt adjustment, and castor wheels, against manufacturing defects.

Basic Grey Fabric Task Chair with No Arms

Product code: OC303TG
Streamline your workstation with the Basic Grey Fabric Task Chair with No Arms, a versatile and essential seating solution for busy administrative and...

Inc VAT

Exc VAT

£114.00

£95.00

Colour - Grey

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Overview

Features

Safety & Warranty

Specifications & Dimensions

Delivery & Returns

Product FAQs

Product Overview: Armless Grey Fabric Operator Chair

Focus on the task at hand with a chair that prioritises functionality over frills. The armless design of this task chair provides total freedom of movement, allowing it to slide under any worktable or fit into compact cubicles without obstruction, making it a favorite for high-density office layouts.

The Cobolt Advantage

  • Free-Floating Back Technology: Experience a more dynamic sitting experience. The backrest can be set to follow your movements or locked at a specific angle, ensuring continuous lumbar contact as you transition between different desk tasks.
  • Independent Back Rake: Unlike standard tilt chairs, this model allows you to adjust the angle of the backrest independently of the seat. This provides a "back rake" function that can be fixed in multiple positions to support an upright or slightly reclined posture.
  • Space-Saving Armless Profile: By removing armrests, this chair significantly reduces its footprint. It is the ideal specification for narrow desks, multi-user IT benches, and reception desks where staff need to move frequently and sit close to the work surface.

Adjustability & Durability

  • Manual Back Height Control: Tailor the lumbar support to your height. The backrest can be raised or lowered manually, ensuring the contoured fabric "cups" your spine at exactly the right point to prevent lower back strain.
  • Industrial-Grade Grey Fabric: The seating surfaces are upholstered in a heavy-duty, commercial-grade grey fabric that is resistant to pilling and abrasion, maintaining a professional look even after years of daily use.
  • Precision Gas Lift: The high-quality gas strut provides a smooth height transition (420-535mm), allowing the user to maintain a 90-degree angle at the knees for optimal pelvic health.

The Cobolt Standard

  • Free Mainland UK Delivery: We manage all transport logistics to ensure your departmental budget goes further. Every task chair includes Free Mainland UK Delivery for total cost clarity.
  • 50 Years of Mastery: With five decades of B2B heritage, we select essential furniture that is engineered to survive the relentless, multi-user reality of the UK public and private sectors.
  • UK Design Principles: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Where is the Grey Armless Task Chair best utilised?

The Grey Armless Operator Chair is the primary specification for School Reception Desks, University Study Carrels, and Administrative Touchdown Zones. Its armless design is particularly beneficial for Laboratories and Drafting Stations where unrestricted arm movement is required.

Key Features

  • Independent Back Rake — Back tilt control that operates separately from the seat, lockable in various angles for a bespoke fit.
  • Back Height Adjustment — Allows the user to position the lumbar support perfectly against the spine's natural curve.
  • Free-Floating Back Mechanism — Backrest moves with the user for dynamic support or can be fixed in a static position.
  • Space-Efficient Armless Design — Perfect for narrow workstations and ensuring the chair tucks completely under the desk.
  • 110kg Maximum Capacity — Robustly built for commercial environments and tested for daily eight-hour usage.
  • Durable Grey Fabric Upholstery — A neutral, professional finish that is easy to maintain and highly resistant to wear.
  • 360-Degree Swivel Base — Reinforced black nylon base with smooth-gliding castors for effortless mobility across the office.
  • Designed in the UK — Engineered to meet the specific functional and ergonomic standards of the British market.
Warranty icon
1-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Institutional Estates

  • Commercial Grade Focus: We only supply furniture intended for the demanding conditions of modern academies and corporate offices, steering clear of light-duty retail products.
  • Ergonomic Versatility: By offering independent back and height controls, we ensure a single chair model can accommodate a diverse workforce.
  • Logistical Efficiency: Dispatched using specialised commercial networks to ensure your furniture arrives safely, on time, and with minimal transit damage.

Certified Security. Proven Performance.

  • The Gas Lift Mechanism is rigorously tested for high-frequency use, ensuring the seat height remains stable and secure under a 110kg load.
  • The Back Rake Lock is a critical safety feature, ensuring the backrest provides a fixed, stable platform for focused typing tasks once the desired angle is chosen.
  • Features a Contoured Lumbar Backrest, designed to prevent slouching and reduce the long-term risk of lower back discomfort in sedentary roles.
  • The Armless Architecture prevents "snagging" risks in high-traffic environments or reception areas where quick egress may be required.
  • This chair is defended by our 1-year commercial warranty, which covers all mechanical faults and structural components under standard daily usage.

An essential armless operator chair featuring a grey fabric finish, independent back tilt, and manual back height adjustment.

Weight Capacity
110kg
Chair Weight
9kg
Guarantee
1 Year
Specification
Dimensions
Purpose / Benefit
Total Chair Height
975mm - 1085mm
High-back profile provides comprehensive support through the mid-spine
Seat Height
420mm - 535mm
Wide range ensures correct leg positioning for various user heights
Seat Width & Depth
488mm(W) x 425mm(D)
Deep seat pan designed for multi-hour comfort in focus-driven roles
Backrest Dimensions
480mm(H) x 455mm(W)
Broad backrest area for reliable spinal support during administrative tasks
Total Chair Width
480mm
Compact armless width allows for high-density seating in IT labs and offices
Adjustment Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple positions
Backrest Feature
Free-Floating Back
Can be set to follow user movement for dynamic lumbar support
Finish
Commercial Grey Fabric
Tough, breathable material designed for high-traffic public sector environments
Origin
Designed in the UK
Refined for the ergonomic standards and space requirements of British estates

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Frequently Asked Questions

1. What is the benefit of a "no arms" task chair?

A: Armless chairs provide total freedom of movement and allow you to sit much closer to your desk. They are also ideal for space-saving, as the chair can be tucked completely under the worktop when not in use.

2. What does "Free Floating Back" mean?

A: This means the backrest isn't fixed in one place. It can be set to move with you as you lean forward or back, providing continuous lumbar support through your range of motion.

3. Can I lock the backrest at a specific angle?

A: Yes. The "back rake" adjustment allows you to tilt the backrest independently of the seat and lock it into your preferred position for maximum comfort.

4. Is the backrest height adjustable?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back.

5. What is the weight limit for this operator chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the standard for professional office seating.

6. Is the fabric easy to keep clean?

A: The commercial grey fabric is very durable. For daily maintenance, we recommend light vacuuming, and for spills, it can be cleaned with a damp cloth and mild non-abrasive cleaner.

7. Is this chair difficult to assemble?

A: Not at all. It arrives with clear instructions and all necessary fixings. Most users can have it built and ready for use in under 10 minutes.

8. What does the 1-year warranty cover?

A: Our 1-year commercial warranty covers all mechanical and structural components, including the gas lift, back tilt adjustment, and castor wheels, against manufacturing defects.

Overview

Product Overview: Armless Grey Fabric Operator Chair

Focus on the task at hand with a chair that prioritises functionality over frills. The armless design of this task chair provides total freedom of movement, allowing it to slide under any worktable or fit into compact cubicles without obstruction, making it a favorite for high-density office layouts.

The Cobolt Advantage

  • Free-Floating Back Technology: Experience a more dynamic sitting experience. The backrest can be set to follow your movements or locked at a specific angle, ensuring continuous lumbar contact as you transition between different desk tasks.
  • Independent Back Rake: Unlike standard tilt chairs, this model allows you to adjust the angle of the backrest independently of the seat. This provides a "back rake" function that can be fixed in multiple positions to support an upright or slightly reclined posture.
  • Space-Saving Armless Profile: By removing armrests, this chair significantly reduces its footprint. It is the ideal specification for narrow desks, multi-user IT benches, and reception desks where staff need to move frequently and sit close to the work surface.

Adjustability & Durability

  • Manual Back Height Control: Tailor the lumbar support to your height. The backrest can be raised or lowered manually, ensuring the contoured fabric "cups" your spine at exactly the right point to prevent lower back strain.
  • Industrial-Grade Grey Fabric: The seating surfaces are upholstered in a heavy-duty, commercial-grade grey fabric that is resistant to pilling and abrasion, maintaining a professional look even after years of daily use.
  • Precision Gas Lift: The high-quality gas strut provides a smooth height transition (420-535mm), allowing the user to maintain a 90-degree angle at the knees for optimal pelvic health.

The Cobolt Standard

  • Free Mainland UK Delivery: We manage all transport logistics to ensure your departmental budget goes further. Every task chair includes Free Mainland UK Delivery for total cost clarity.
  • 50 Years of Mastery: With five decades of B2B heritage, we select essential furniture that is engineered to survive the relentless, multi-user reality of the UK public and private sectors.
  • UK Design Principles: This chair is thoughtfully Designed in the UK, ensuring the proportions and mechanics meet the specific ergonomic requirements of the British workplace.

Features & Benefits

Where is the Grey Armless Task Chair best utilised?

The Grey Armless Operator Chair is the primary specification for School Reception Desks, University Study Carrels, and Administrative Touchdown Zones. Its armless design is particularly beneficial for Laboratories and Drafting Stations where unrestricted arm movement is required.

Key Features

  • Independent Back Rake — Back tilt control that operates separately from the seat, lockable in various angles for a bespoke fit.
  • Back Height Adjustment — Allows the user to position the lumbar support perfectly against the spine's natural curve.
  • Free-Floating Back Mechanism — Backrest moves with the user for dynamic support or can be fixed in a static position.
  • Space-Efficient Armless Design — Perfect for narrow workstations and ensuring the chair tucks completely under the desk.
  • 110kg Maximum Capacity — Robustly built for commercial environments and tested for daily eight-hour usage.
  • Durable Grey Fabric Upholstery — A neutral, professional finish that is easy to maintain and highly resistant to wear.
  • 360-Degree Swivel Base — Reinforced black nylon base with smooth-gliding castors for effortless mobility across the office.
  • Designed in the UK — Engineered to meet the specific functional and ergonomic standards of the British market.
Warranty icon
1-year commercial warranty
Free delivery icon
Free UK Mainland Delivery
UK Designed icon
Designed in the UK

Cobolt Service & Ethos: Supporting Institutional Estates

  • Commercial Grade Focus: We only supply furniture intended for the demanding conditions of modern academies and corporate offices, steering clear of light-duty retail products.
  • Ergonomic Versatility: By offering independent back and height controls, we ensure a single chair model can accommodate a diverse workforce.
  • Logistical Efficiency: Dispatched using specialised commercial networks to ensure your furniture arrives safely, on time, and with minimal transit damage.

Safety & Warranty

Certified Security. Proven Performance.

  • The Gas Lift Mechanism is rigorously tested for high-frequency use, ensuring the seat height remains stable and secure under a 110kg load.
  • The Back Rake Lock is a critical safety feature, ensuring the backrest provides a fixed, stable platform for focused typing tasks once the desired angle is chosen.
  • Features a Contoured Lumbar Backrest, designed to prevent slouching and reduce the long-term risk of lower back discomfort in sedentary roles.
  • The Armless Architecture prevents "snagging" risks in high-traffic environments or reception areas where quick egress may be required.
  • This chair is defended by our 1-year commercial warranty, which covers all mechanical faults and structural components under standard daily usage.

Specification Dimensions

An essential armless operator chair featuring a grey fabric finish, independent back tilt, and manual back height adjustment.

Weight Capacity
110kg
Chair Weight
9kg
Guarantee
1 Year
Specification
Dimensions
Purpose / Benefit
Total Chair Height
975mm - 1085mm
High-back profile provides comprehensive support through the mid-spine
Seat Height
420mm - 535mm
Wide range ensures correct leg positioning for various user heights
Seat Width & Depth
488mm(W) x 425mm(D)
Deep seat pan designed for multi-hour comfort in focus-driven roles
Backrest Dimensions
480mm(H) x 455mm(W)
Broad backrest area for reliable spinal support during administrative tasks
Total Chair Width
480mm
Compact armless width allows for high-density seating in IT labs and offices
Adjustment Mechanism
Independent Back Rake
Allows for separate back tilt control lockable in multiple positions
Backrest Feature
Free-Floating Back
Can be set to follow user movement for dynamic lumbar support
Finish
Commercial Grey Fabric
Tough, breathable material designed for high-traffic public sector environments
Origin
Designed in the UK
Refined for the ergonomic standards and space requirements of British estates

Delivery & Returns

FREE Delivery to UK Mainland Zone 1

Your order will be delivered on a standard 5-7 Working Days service.

For all other locations, please email help@coboltfurniture.co.uk for a quote.


  • Made to Order: Many of our products are manufactured specifically for your order. Because of this, returns depend on the product specifics and require prior permission from Cobolt Furniture.
  • Cancellations: We always endeavour to reduce cancellation costs. However, please note a partial or entire charge may be levied to cover material costs and administrative fees if a made-to-order line is cancelled.

Product FAQs

Frequently Asked Questions

1. What is the benefit of a "no arms" task chair?

A: Armless chairs provide total freedom of movement and allow you to sit much closer to your desk. They are also ideal for space-saving, as the chair can be tucked completely under the worktop when not in use.

2. What does "Free Floating Back" mean?

A: This means the backrest isn't fixed in one place. It can be set to move with you as you lean forward or back, providing continuous lumbar support through your range of motion.

3. Can I lock the backrest at a specific angle?

A: Yes. The "back rake" adjustment allows you to tilt the backrest independently of the seat and lock it into your preferred position for maximum comfort.

4. Is the backrest height adjustable?

A: Yes. You can manually raise or lower the backrest. This is essential for ensuring the contoured part of the chair aligns perfectly with the small of your back.

5. What is the weight limit for this operator chair?

A: This chair is structurally rated for a maximum user weight of 110kg (approximately 17 stone), which is the standard for professional office seating.

6. Is the fabric easy to keep clean?

A: The commercial grey fabric is very durable. For daily maintenance, we recommend light vacuuming, and for spills, it can be cleaned with a damp cloth and mild non-abrasive cleaner.

7. Is this chair difficult to assemble?

A: Not at all. It arrives with clear instructions and all necessary fixings. Most users can have it built and ready for use in under 10 minutes.

8. What does the 1-year warranty cover?

A: Our 1-year commercial warranty covers all mechanical and structural components, including the gas lift, back tilt adjustment, and castor wheels, against manufacturing defects.

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