Ushio 1000458 EYK JCR120V-300W

The Ushio Precision Photo-Optic 1000458 (EYK JCR120V-300W) Lamp is a commercial-grade, high-intensity line-voltage halogen projector lamp engineered for professional audio/visual slide projectors, specialized medical diagnostic equipment, surgical illuminators, and high-precision fiber optic light guides. Producing an intensive, highly focused beam path, this 300-watt capsule utilizes an advanced dichroic specular mirror reflector dish to channel visible light forward while passing degrading infrared heat out the back of the glass shield. Outfitted with an industry-standard GY5.3 Oval 2-pin base, it provides an optimized 3300K color profile engineered for high-performance laboratory and optical projection tracks.

ADL Supply Expert Application & Replacement Guide

The Ushio JCR120V-300W lamp is a specialized optical maintenance standard specified heavily by medical equipment technicians, cinema presentation specialists, and laboratory instrument operators. Outfitted with an internally focused ellipsoidal specular reflector dish, its geometric mirror lines focus maximum radiant energy exactly **1.75 Inches (44.5 mm)** forward out the lens rim into the center of standard film gates or digital fiber paths, completely bypassing the loose beam spill typical in general-purpose reflector lamps.

Critical Burning Orientations and Dichroic Thermal Ventilation Traps: Maintenance crews retrofitting medical or projection machinery must enforce two definitive installation rules before applying line power: this high-amperage module must be operated strictly in a Base Down to Horizontal (BD/Hor) burning alignment. Mounting this capsule in an unauthorized upside-down (Base Up) orientation traps extreme filament convection currents inside the ceramic socket assembly, rapidly frying wire leads and destroying internal contact pins.

Furthermore, the multi-layered **dichroic glass lining** acts as a cold-mirror filter, transmitting roughly **66% of internal filament infrared heat backward through the rear of the glass dish** while forcing clear, high-density visible light forward. This keeps the light beam cool to prevent curling or blistering delicate 16mm or 35mm film strips. However, equipment fans must be completely clear of dust blocks so this backward-routed heat can escape cleanly without cooking internal instrument boards.

Detailed Product Specifications

• Brand Name: Ushio America (Premium Photo-Optic Lighting Division)
• Product Series Line: JCR Low-Frequency Dichroic Reflector Projection Series
• Ushio Factory Catalog Order Code SKU: 1000458
• Manufacturer Code Abbreviation Model: EYK JCR120V-300W
• Official Trade Industry ANSI Identifier: EYK Certified Interchangeable Standard
• UPC Barcode Number (GTIN-12): 048777148509
• Core Technology Class: High-Intensity Quartz Tungsten-Halogen with Reflector
• Operational Power: 300 Watts
• Nominal Input Voltage Requirement: 120 Volts Line Voltage (Mains Direct Input)
• Sustained Continuous Amperage Draw: 2.50 Amperes
• Precision Optical Focal Distance: Exactly 1.75" Inches (44.5mm from dish rim to focal plane apex)
• Color Temperature Configuration: 3300K Natural White (Clear Quartz Burner Core)
• Color Rendering Index (CRI): 100 Ra (Absolute Spectral Quality Representation)
• Reflector Envelope Construction: Ellipsoidal Multi-Layer Dichroic Cold-Mirror Interference Glass
• Front Lens Treatment: Open-Face Casing (No Front Cover Glass — Enclosed Fixtures Mandated)
• Base Type Configuration: GY5.3 Oval 2-Pin Plug-In Base (Molded Ceramic Base End)
• Pin Spacing Pitch Metric: 5.3mm Pin Center-to-Center Pitch with specialized rigid oval leads
• Maximum Overall Length (MOL): 1.75" Inches (44.5mm actual length tip-to-base base)
• Bulb Nominal Diameter (DIA): 2.00" Inches Nominal MR16 (50.8mm actual front rim face width)
• Rated Average Service Lifespan: 60 Hours (Highly calibrated precision short-life high-flux filament)
• Chassis Burn Position Limit: Base Down to Horizontal (BD/Hor) Orientation Only

Operation, Safety & Mounting Compliance

High-Temperature Filament Rules and Handling Protocols

This unshielded 300W quartz module reaches critical internal operating temperatures exceeding 900°C within seconds of ignition. Technical installers must **never handle the clear quartz burner capsule or inner reflector walls with bare skin or oily fingers**. Human skin naturally leaves behind microscopic alkaline sweat oils that bake permanently into the quartz substrate during rapid heating. This contamination blocks localized heat dissipation, inducing micro-fractures, mirror peeling, or immediate pressure ruptures. Always handle re-lamping sweeps using clean cotton tech gloves or a lint-free tech cloth. If skin contact occurs, immediately clean the cold glass surface with an isopropyl rubbing alcohol wipe before applying line voltage.

Mercury Content Verification and Disposal Protocols

This product is a traditional tungsten halogen filament incandescent bulb and **contains 0.0 mg of mercury or associated heavy-metal hazardous gas components**. It is completely free of toxic gas restrictions; however, due to its specialized short-life quartz and copper pin structures, spent modules should be processed through standard municipal commercial electronic waste (e-waste) collection paths rather than mixed with household trash. Allow equipment cooling fans to cycle for a full 15 minutes before executing a bulb replacement to prevent severe contact skin burns.

Commercial Equipment Industry Cross-References

This 300W ANSI EYK direct line lamp replaces or matches the following catalog indicators:

• Sylvania Competitor Match: 54839 / EYK JCR120V-300W (Precision Photo-Optic Line)
• GE Lighting Alternative: 42416 / EYK 120V 300W Projector Bulb
• Osram European Line: 64614 / Specialty 120V 300W Optical Quartz Track

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume distribution shipments, multi-pack logistics, and contractor project quotes for procurement teams, schools, and warehouse facilities nationwide.

For specialized contractor pricing tiers, job-site pallet deliveries, or comprehensive submittal documentation, contact our support team directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.