Lumbar Support Component for Ergonomic Office Chairs

Product Specifications

Technical details and manufacturing context for Lumbar Support

Definition

A specialized component integrated into ergonomic office chairs that provides adjustable support to the lumbar region of the spine, maintaining proper spinal alignment and reducing pressure on intervertebral discs during prolonged sitting. This component is typically mounted within the backrest of an office chair and features mechanisms that allow the user to adjust its height, depth, and firmness to match their individual lumbar curve. By conforming to the user's back, it distributes body weight evenly across the backrest, promoting a neutral spine posture and reducing the risk of lower back discomfort. The component is constructed from materials such as polyurethane foam for cushioning, polypropylene plastic for structural parts, and steel reinforcement for durability. Key parameters include a load capacity of 100–150 kg, an adjustment range of 50–80 mm in forward/backward travel, and an adjustment force of 20–40 N for manual operation. It operates within a temperature range of -20 to 60 °C and a relative humidity of 10–90% (non-condensing). The ingress protection rating is IP40–IP54 per IEC 60529, indicating dust and splash resistance. The material grade for structural components is PA66+30%GF (glass-fiber reinforced nylon). Visible surfaces have a surface finish of Ra 0.8–1.6 μm per ISO 1302. The component weighs 0.8–1.5 kg per unit and is designed for a minimum of 50,000 adjustment cycles per ISO 15512. These values are reference ranges for directory purposes; actual specifications must be confirmed with the legal manufacturer or supplier for the specific model and application.

Working Principle

The lumbar support operates through adjustable mechanical structures that allow the user to modify the support's height, depth, and firmness. These adjustments enable the support to conform to the user's lumbar curve, distributing body weight evenly across the backrest. By promoting a neutral spine posture, the support reduces pressure on intervertebral discs and helps maintain proper spinal alignment during prolonged sitting. The mechanism typically involves a manual adjustment system, such as a lever or knob, that moves the support forward or backward within a range of 50–80 mm. The firmness can be adjusted by changing the tension of the support surface, often using a mechanism that compresses or releases the foam padding. The load capacity of 100–150 kg ensures the support can accommodate a wide range of users. The adjustment force of 20–40 N ensures that users can easily make changes without excessive effort. The materials used, including polyurethane foam, polypropylene plastic, and steel reinforcement, provide a balance of comfort, structural integrity, and durability. The support is designed to operate within specified environmental conditions, including temperature and humidity ranges, and has an ingress protection rating that indicates resistance to dust and splashes.

Common Materials

Polyurethane foam, Polypropylene plastic, Steel reinforcement

Technical Parameters

Parameter	Typical range	Notes & selection driver
Load Capacity	100–150 kg	Maximum user weight
Adjustment Range	50–80 mm	Forward/backward travel
Adjustment Force	20–40 N	Manual operation
Operating Temperature	-20–60 °C	Non-condensing
Relative Humidity	10–90 %	Non-condensing
Ingress Protection	IP40–IP54	Dust and splash resistanceIEC 60529
Material Grade	PA66+30%GF	Glass-fiber reinforced nylon
Surface Finish	Ra 0.8–1.6 μm	Visible surfacesISO 1302
Weight	0.8–1.5 kg	Per unit
Durability	50000 cycles	Minimum adjustment cyclesISO 15512

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Support Pad Part
Primary contact surface that distributes pressure across lumbar region

Material: Polyurethane foam with breathable fabric cover
Adjustment Mechanism
Enables height and depth positioning via manual or automatic controls

Material: Steel or reinforced plastic
Mounting Bracket Part
Secures lumbar support to chair back frame

Material: Steel or aluminum alloy

Manufacturers of Lumbar Support

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Zhejiang Rina Home Technology Co., Ltd.

Deqing, Zhejiang, CN

Listed on the company's own website · profile compiled by CNFX from public sources

Listed there as: “TPE Lumbar Support”
View source page ↗ chinarina.com · checked 2026-09-07

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Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 16 September 2026

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Frequently Asked Questions

What is the load capacity of this lumbar support?

The load capacity is specified as 100–150 kg. This is a reference range for directory purposes; the actual load capacity for a specific model must be confirmed with the legal manufacturer or supplier.

How does the adjustment mechanism work?

The lumbar support features manual adjustment mechanisms that allow the user to change the height, depth, and firmness. The depth adjustment typically moves the support forward or backward within a range of 50–80 mm, and the adjustment force required is 20–40 N. The exact mechanism may vary by model.

What materials are used in the construction?

The component is made from polyurethane foam for cushioning, polypropylene plastic for structural parts, and steel reinforcement for added strength. The material grade for structural components is PA66+30%GF (glass-fiber reinforced nylon).

What environmental conditions can it withstand?

The lumbar support is designed to operate in non-condensing conditions within a temperature range of -20 to 60 °C and a relative humidity of 10–90%. It has an ingress protection rating of IP40–IP54 per IEC 60529, indicating resistance to dust and splashes.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	0-100 kPa (contact pressure)
other spec:	Max deflection: 30mm, Fatigue cycles: >1,000,000
temperature:	-20°C to 60°C

Lumbar Support

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards