LED High Bay Lights
UFO, traditional reflector, and high-power projector high bay luminaires from 100W to 1200W. Die-cast aluminum housing, Lumileds 3030 chips, IP65 sealing, and up to 160 lm/W — engineered for warehouses, factories, stadiums, and large industrial spaces.
Match Wattage to Mounting Height
High bay power selection depends on mounting height, target lux level, and beam angle. Use this guide as a starting point — our engineers provide a DIALux simulation with every project quote to confirm uniformity and lux levels for your exact layout.
| Mounting Height | Typical Application | Suggested Power | Beam Angle |
|---|---|---|---|
| 4 – 6 m | Retail, small workshops, low-ceiling storage | 100 – 150W | Wide (90°–120°) |
| 6 – 8 m | General warehouses, assembly areas | 150 – 200W | Medium-wide (90°) |
| 8 – 12 m | Distribution centers, manufacturing halls | 200 – 300W | Medium (60°–90°) |
| 12 – 16 m | High-rack storage, large factories | 300 – 500W | Narrow-medium (60°) |
| 16 m + | Stadiums, ballparks, mining, ports | 500 – 1200W | Narrow (high-mast optics) |
* Guidance only. Actual power depends on required lux, ceiling reflectance, and rack/obstruction layout. Request a free DIALux study for project-accurate specification.
Three High Bay Form Factors
SJGK covers three distinct mechanical designs. Pick the one that fits your installation and budget.
UFO Round
Compact, lightweight, fast hook installation. Ideal for warehouses and workshops up to ~12m.
Traditional Reflector
Aluminum reflector gives wide, uniform spread. Best for general industrial spaces needing soft, even light.
High-Power Projector
Riveted-fin and modular cooling for 300W–1200W. Built for high-mast, stadium, mining, and port applications.
Illustrative CAD exploded view of the SJGK high bay assembly.
What's Inside Every High Bay
Every SJGK fixture is built around a die-cast aluminum thermal path — bracket, finned housing, sealed driver, LED board, optical lens, and reflector. Each layer has a job: pull heat away from the chips, keep water out, and put the light where you need it.
Die-Cast Aluminum Housing
Die-cast aluminum alloy construction with heat dissipation fins that facilitate convective heat transfer, significantly reducing internal temperature and extending the lifespan of both LED and power supply.
High-Efficiency 3030 SMD LED Chip
Lumileds 3030 SMD LED chips mounted on an aluminum substrate deliver 120–160 lm/W efficacy with stable color consistency.
Yellowing-Resistant Optical PC Lens
High-transmittance polycarbonate lens resists yellowing over time while distributing light evenly across the work plane.
Built-in Power Driver
Integrated driver design reduces installation complexity and external wiring points, improving reliability in dusty industrial environments.
Waterproof Silicone Seal
IP65-rated silicone gasket seals out dust and water jets, suitable for warehouses, workshops, and semi-exposed areas.
Adjustable Bracket & Hook Mount
UFO models ship with a hook for quick suspension; bracket-mount models include an adjustable yoke for directional aiming.
10 High Bay Series. One Manufacturer.
Each series targets a specific application envelope. Click any series to request its full spec sheet, IES files, and DIALux-compatible photometric data.
The housing is manufactured using die-cast aluminum alloy technology with a distinctive aesthetic design. Heat dissipation fins facilitate convective heat transfer with surrounding air, effectively distributing thermal energy to reduce internal temperature and ensure optimal longevity for both the light source and power supply.
- Die-cast aluminum alloy housing with aesthetic fin design
- Convective heat dissipation reduces internal temperature
- Yellowing-resistant optical PC lens
- Built-in power driver
| Power | Diameter | Height |
|---|---|---|
| 100W | φ480 | 300mm |
| 200W | φ480 | 300mm |
| 250W | φ480 | 320mm |
| 300W | φ480 | 320mm |
The lamp body adopts high-pressure die-casting aluminum molding with impact resistance and corrosion resistance. A large-area all-aluminum module places the LED light source in direct thermal contact with the heat sink, combined with air-duct heat dissipation to completely solve the LED thermal problem.
- High-pressure die-casting aluminum molding
- Impact resistance and corrosion resistance
- Large-area all-aluminum module for direct thermal contact
- Air-duct heat dissipation
| Power | Diameter | Height |
|---|---|---|
| 100W | φ385 | 290mm |
| 150W | φ385 | 290mm |
| 200W | φ400 | 290mm |
Adopting heat plate riveted fins cooling technology to solve the problem of high-power cooling and make the chip and driver last longer. The whole heat dissipation kit is electroplated for better corrosion resistance.
- Heat plate riveted fins cooling technology
- Solves high-power cooling challenges
- Electroplated heat dissipation kit for corrosion resistance
- Extends chip and driver service life
| Power | Diameter | Height |
|---|---|---|
| 300W | φ375 | 419mm |
| 400W | φ375 | 419mm |
Adopting heat plate riveted fins cooling technology to solve the problem of high-power cooling and make the chip and driver last longer. The whole heat dissipation kit is electroplated for better corrosion resistance.
- Heat plate riveted fins cooling technology
- Electroplated heat dissipation kit
- Engineered for very high wattage applications
- Rugged corrosion-resistant build
| Power | Length | Width | Height |
|---|---|---|---|
| 500W | 469mm | 253mm | 478mm |
| 1200W | 657mm | 315mm | 662mm |
Adopts a modular plus fin combination to optimize the air duct, achieving a professional heat dissipation system that reduces the light weight and extends the service life of the whole light. Mainly applicable to large commercial areas, ballparks, squares, and mining areas.
- Modular plus fin combination optimizes air duct
- Professional heat dissipation system
- Reduced fixture weight
- Designed for stadiums, squares, and mining areas
| Power | Diameter | Height |
|---|---|---|
| 400W | φ650 | 230mm |
| 600W | φ670 | 230mm |
| 1200W | φ800 | 230mm |
The luminaire body is formed by high-pressure die-cast aluminum, featuring impact resistance and corrosion resistance. The LED optical lens offers high light transmittance, impact resistance, flame retardancy, and strong thermal stability.
- High-pressure die-cast aluminum body
- Impact and corrosion resistant
- High-transmittance flame-retardant optical lens
- Strong thermal stability
| Power | Diameter | Height |
|---|---|---|
| 100W | φ253 | 111mm |
| 150W | φ308 | 117mm |
| 200W | φ354 | 122mm |
| 300W | φ405 | 130mm |
| 500W | φ500 | 130mm |
The heat dissipation wing of the shell and the air convection heat dissipation ensure the LED light source performs reliably. Adopts high-purity aluminum as the reflector — the radiation angle is large, the illumination is uniform, with no glare and no stroboscope.
- Heat dissipation wing + air convection cooling
- High-purity aluminum reflector
- Wide radiation angle, uniform illumination
- No glare, no stroboscopic effect
| Power | Diameter | Height |
|---|---|---|
| 100W | φ400 | 265mm |
| 120W | φ400 | 265mm |
| 150W | φ400 | 265mm |
| 200W | φ400 | 265mm |
| 250W | φ400 | 265mm |
The heat dissipation wing of the shell and the air convection heat dissipation ensure the LED light source performs reliably. Adopts high-purity aluminum as the reflector — the radiation angle is large, the illumination is uniform, with no glare and no stroboscope.
- Heat dissipation wing + air convection cooling
- High-purity aluminum reflector
- Wide radiation angle, uniform illumination
- No glare, no stroboscopic effect
| Power | Diameter | Height |
|---|---|---|
| 120W | φ416 | 420mm |
| 200W | φ416 | 420mm |
| 250W | φ416 | 420mm |
Matrix Glass Lens permanently resistant to aging, yellowing, corrosion, and high temperatures; easy to clean with up to 95% light transmittance. High-Efficiency LED Chip: custom 7070 LED chip for higher luminosity.
- Matrix glass lens — anti-aging, anti-yellowing, anti-corrosion
- Up to 95% light transmittance
- Easy to clean
- Custom 7070 LED chip for higher luminosity
| Power | Diameter | Height |
|---|---|---|
| 100W | φ442 | 266mm |
| 150W | φ442 | 266mm |
| 200W | φ442 | 266mm |
| 300W | φ482 | 266mm |
Slim-profile UFO high bay with an integrated respirator valve for pressure equalization. Power wiring, lifting accessories, main lamp body, power drive, aluminum PCB, lens, and aluminum lampshade are engineered as an integrated assembly.
- Ultra-slim UFO profile (93mm height)
- Integrated respirator valve for pressure equalization
- Lifting accessories included
- Aluminum PCB for efficient heat transfer
| Power | Diameter | Height |
|---|---|---|
| 100W | φ273 | 93mm |
| 150W | φ320 | 93mm |
| 200W | φ355 | 93mm |
Shared Across All 10 Series
| Lamp Body Material | Aluminum Die-Casting Housing |
| Light Source | Lumileds 3030 LED |
| Operating Voltage | AC100–277V |
| Color Temperature | 2700K – 6500K |
| Color Rendering Index (CRI) | ≥80 |
| Operating Temperature | -20°C ~ 45°C |
| Ingress Protection (IP) | IP65 |
| LED Lifespan | >50,000 hours |
| Luminous Efficacy | 120 – 160 lm/W |
Recommended Lux Levels by Space
Typical target illuminance for common applications, based on general lighting design standards (EN 12464-1 / CIE). Confirm exact requirements against your local code.
| General warehouse / bulk storage | 100 – 200 lux |
| Warehouse with picking / packing | 200 – 300 lux |
| General manufacturing & assembly | 300 – 500 lux |
| Precision assembly / inspection | 500 – 750 lux |
| Fine / high-precision work | 750 – 1000 lux |
| Indoor sports hall (recreational) | 300 – 500 lux |
| Indoor sports (competition) | 500 – 750 lux |
| Cold storage / freezer | 100 – 200 lux |
LED vs Traditional High Bay
Approximate LED equivalents for replacing legacy metal halide (MH) and high-pressure sodium (HPS) fixtures. LEDs deliver comparable or better floor lux while consuming substantially less power.
| Traditional | LED Equivalent |
|---|---|
| 400W Metal Halide (MH) | 100 – 150W LEDComparable or higher floor lux |
| 1000W Metal Halide (MH) | 300 – 400W LEDComparable or higher floor lux |
| 250W HPS | 100W LEDComparable floor lux, better color |
| 400W HPS | 150 – 200W LEDComparable floor lux, better color |
* Approximate equivalents. Actual replacement wattage depends on existing fixture efficiency, mounting height, and target lux. Request a DIALux study for a project-accurate retrofit plan.
High Bay Applications
Warehouses & Logistics
High-rack storage, distribution centers, cold-chain facilities — uniform illumination for safe forklift operation and accurate picking.
Manufacturing & Workshops
Production lines, assembly halls, and machine shops where consistent, glare-free light supports precision work and safety.
Sports & Stadiums
High-power SJGK904/905 models with narrow-beam optics for ballparks, indoor arenas, and large open venues.
Commercial & Retail
Big-box stores, showrooms, and exhibition halls — high CRI for accurate color presentation of merchandise.
LED High Bay Lights — Questions Answered
What is a LED high bay light?
A high bay light is a luminaire designed to illuminate spaces with high ceilings — typically 6 metres (about 20 feet) or taller. The term refers to the mounting position rather than a single fixture type, so it covers UFO round fixtures, traditional reflector-style fixtures, and high-power projectors. LED high bay lights have largely replaced traditional metal halide (MH) and high-pressure sodium (HPS) fixtures because they consume far less energy, last much longer, and reach full brightness instantly without warm-up.
What is the difference between high bay and low bay lights?
The distinction is mounting height. High bay fixtures are designed for ceilings roughly 6 metres and above, and usually include reflectors or lenses to direct light down and outward over the long distance to the floor. Low bay fixtures are intended for ceilings below about 6 metres, where a wider, softer spread is preferred and less optical concentration is needed. Sunjoylight high bay fixtures span both ranges depending on the chosen power and beam angle.
How do I choose the right wattage for my ceiling height?
Wattage selection depends on mounting height, the target lux level for your application, and the beam angle. As a general starting point: 4–6m ceilings suit 100–150W, 6–8m suit 150–200W, 8–12m suit 200–300W, and above 12m typically needs 300W or more. These are starting points only — we provide a free DIALux photometric study with every project quote to confirm the exact fixture count, spacing, and uniformity for your layout.
What beam angle should I select?
Beam angle controls how light spreads from the fixture. A wide beam (90°–120°) suits lower ceilings and open areas where even, broad coverage matters. A narrow beam (60° or less) concentrates output for high ceilings, aisles, or task areas where light must travel further to reach the floor. SJGK fixtures are available in multiple beam-angle options to match your installation.
How many high bay lights do I need?
Fixture count depends on the room dimensions, ceiling height, target lux level, and the lumen output and beam angle of the chosen fixture. There is no single formula, because each space and lighting standard differs. The most reliable approach is a DIALux simulation using the fixture's IES photometric file against your floor plan — we prepare this for you at no cost when you share your space dimensions and target lux.
Are these fixtures suitable for cold storage, high-temperature, or food-processing areas?
SJGK fixtures are rated IP65 for protection against dust and water jets, and operate across a -20°C to 45°C ambient range as standard. For specialised environments — freezers, high-temperature zones, or wash-down food-processing areas — please tell us the conditions so we can recommend the right series and any required modifications.
What is the difference between UFO and traditional high bay fixtures?
UFO high bays are compact, round, lightweight fixtures that install quickly with a hook — ideal for warehouses and workshops up to around 12m. Traditional reflector high bays use a large aluminium reflector to spread light softly and evenly, suiting general industrial spaces. For very high ceilings, stadiums, or large open areas, high-power projector-style fixtures (300W–1200W) provide the required output and throw.
Do you offer OEM / ODM and custom branding?
Yes. Sunjoylight is a direct manufacturer and supports OEM and ODM partnerships — custom optics, drivers, housings, color temperatures, branding, and packaging. We also provide free IES/LDT photometric files and DIALux lighting design support for project specifiers and distributors.
Industries We Light
Tell us about your project.
Get a quote within 24 hours.
Share your application — environment, requirements, quantity. A real engineer responds with a tailored quote, IES files, and timeline within one business day.