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Adjustable Air Knife | Low-Profile Aluminum Alloy Air Knife | for PCB line

Adjustable Air Knife | Low-Profile Aluminum Alloy Air Knife | for PCB line

Lowest-profile multi-inlet model in the lineup: 50W × 95H mm — 5 mm shorter than comparable models, purpose-built for installations with strict vertical clearance limits

Full 0.1 – 4.0 mm adjustable edge gap — ultra-fine precision at 0.1 mm for sensitive surface drying, up to 4.0 mm for high-volume air curtain applications, all in one unit

Three inlet positions: End (both sides), Side (M8 thread), Bottom — complete installation flexibility for any machine orientation or pipework routing

Four compatible inlet diameters: Φ32 / Φ38 / Φ45 / Φ51 — direct connection to most standard industrial compressed air lines, no adapter required

Factory-customizable length 50 – 4000 mm with high-temp silicone gasket seals (≤250°C) — every unit built and calibrated in-house to your exact specification


Detailed Description

Product Key Selling Points

A-E-Air-Knife 

Lowest-profile multi-inlet model in the lineup: 50W × 95H mm — 5 mm shorter than comparable models, purpose-built for installations with strict vertical clearance limits

Full 0.1 – 4.0 mm adjustable edge gap — ultra-fine precision at 0.1 mm for sensitive surface drying, up to 4.0 mm for high-volume air curtain applications, all in one unit

Three inlet positions: End (both sides), Side (M8 thread), Bottom — complete installation flexibility for any machine orientation or pipework routing

Four compatible inlet diameters: Φ32 / Φ38 / Φ45 / Φ51 — direct connection to most standard industrial compressed air lines, no adapter required

Factory-customizable length 50 – 4000 mm with high-temp silicone gasket seals (≤250°C) — every unit built and calibrated in-house to your exact specification


Product Structure & Working Principle

A-E-Air-Knife-Design-drawings 

Ultra-low-profile aluminum alloy extrusion: 50W × 95H mm — the reduced height (95 mm vs 100 mm on comparable models) directly reduces the vertical clearance required in machine frames and conveyor enclosures

Three inlet configurations — dual end-entry for balanced long-blade pressure, side M8 thread for lateral pipework, and bottom entry for flush or overhead mounting — engineered into a single compact body

Internal plenum chamber evenly equalizes incoming compressed air pressure across the full blade length, whether the knife is 50 mm or 4000 mm long

Tapered internal acceleration duct converts equalized static pressure into a high-velocity, uniform laminar airflow sheet at the precision knife slot

Outlet gap adjustable from 0.1 mm to 4.0 mm via edge screws — no disassembly required, widest adjustment range for this body-height class

High-temp silicone gasket end seals (≤250°C) lock internal pressure at both blade terminations, maintaining consistent slot velocity from end to end


Application Scenarios

The A-E's ultra-low 95 mm body height and full three-inlet flexibility make it the preferred choice wherever vertical clearance is restricted and installation versatility is required:

Air_knife_multi-industry_usage_scenarios1 

PCB Cleaning Lines — low-profile body slides into tight conveyor frame clearances; adjustable gap and multiple inlets simplify retrofit into existing wash-line configurations

Surface Drying — Bottles, Parts & Flat Substrates — 0.1–4.0 mm range adapts airflow intensity to different product dimensions and conveyor speeds without hardware changes

Dust Removal on Glass, Panels & Optical Surfaces — 0.1 mm minimum gap delivers controlled, gentle particle displacement without marking or damaging sensitive substrates

Low-Clearance Machine Frame Installations — 95 mm body height fits inside enclosures where 100 mm+ models cannot be mounted, enabling air knife integration in compact or legacy equipment

Wide-Format Production Lines (up to 4000 mm) — single continuous knife covers full-width glass, metal sheet, textile, and film processing lines without mid-run splices

Heated Process Equipment — silicone gasket seals rated to ≤250°C allow direct integration into drying ovens, heat-treatment tunnels, and thermal conveyor systems


Technical Parameters

Parameter

Specification

Model

A-E Air Knife (A-E adjustable air knife)

Cross-Section Size

50W × 95H mm

Main Material

Aluminium Alloy

Air Inlet Position

End (Both Sides), Side (M8), Bottom

Air Inlet Size

Φ32  /  Φ38  /  Φ45  /  Φ51

Inlet Thread (Side)

M8

Air Knife Edge Size

0.1 – 4.0 mm (Adjustable)

Customizable Length

50 – 4000 mm

End Sealing

High-Temp Silicone Gasket Seal (≤250°C)

OEM / ODM

Supported


Factory Capability · Customization · Service

Full in-house CNC machining of 50×95mm aluminum alloy extrusions — blade body, internal plenum, all three inlet ports (end / side M8 / bottom), and outlet slot manufactured and inspected on-site

Custom lengths from 50 mm to 4000 mm produced to order — same maximum range as full-size models, achieved in a 95 mm low-profile body — with dimensional and pressure verification before shipment

Inlet position (end / side M8 / bottom), pipe diameter (Φ32 / Φ38 / Φ45 / Φ51), air gap setting (0.1–4.0 mm), and surface finish all configurable per customer specification

OEM and ODM manufacturing supported — accept engineering drawings, physical reference samples, or written application requirement descriptions

High-temp silicone gasket seals (≤250°C) installed as standard on every unit — no additional lead time or cost for heated-process variants

Pre-shipment quality protocol: pressure integrity test, edge-gap calibration to specified tolerance, inlet thread verification, and full dimensional inspection


Competitive Advantage

Comparison Item

QXY A-E Air Knife

Standard Air Knife

Air Gap Adjustability

Adjustable 0.1–4.0 mm ✓

Fixed, not adjustable ✗

Body Height

95 mm — lowest-profile multi-inlet model

100 mm or taller

Inlet Positions

End (dual) / Side (M8) / Bottom

End only

Inlet Pipe Options

Φ32 / Φ38 / Φ45 / Φ51

Single size typical

Customizable Length

50–4000 mm from factory

Standard fixed sizes only

High-Temp Sealing

Silicone gasket ≤250°C ✓

Standard rubber seal ✗

Customization

Length, gap, inlet, finish

No customization


About Us & Custom Inquiry

Shenzhen Qixingyuan Machinery Equipment Co., Ltd.

We are a professional manufacturer focused on industrial air knife systems, offering a complete product range that includes aluminum alloy, stainless steel, and PVC air knives, together with blowers, mounting assemblies, and system accessories. Our factory operates precision CNC machining equipment under strict quality controls, ensuring every air knife unit — from its internal plenum and outlet slot calibration through to inlet thread tolerances and end seal installation — is manufactured, inspected, and verified against specification before leaving the production line.

We have broad experience supporting OEM and ODM clients across electronics, automotive, food and beverage, pharmaceutical, and general industrial sectors. Regardless of whether the requirement is a single direct-replacement knife or a fully engineered multi-knife drying system, our engineering team engages directly with your drawings, samples, or application descriptions to deliver a solution that installs cleanly and performs exactly as needed.

 

Request a Custom Quote

We support customized air knife length, air gap, and airflow design according to your equipment requirements.

Send us your drawings or application details — our engineering team will design the right solution for you.


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