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Small clear halogen capsule with two thin pins on a ceramic base

Ushio

Ushio 8000123 SM-18566 22.8V 50W G6.35 Halogen Bulb

SKU CH-VVR0-PVG83

A 22.8V 50W G6.35 halogen lamp rated at 1000 lumens and 700 hours, compatible with Siemens Hanalux 18566 and 18567 operating-room fixtures

  • Power rating50
  • Light output1000
  • Lifespan (hours)700
  • Product typeHalogen Bulbs
  • Bright 1000-lumen output for clear surgical illumination
  • 50W halogen design delivers focused white light
  • 8V G6.35 base fits existing OR fixtures
  • 700-hour rated life reduces replacement frequency
  • Direct cross-reference for Siemens Hanalux 18566 and 18567

Medical Halogen Replacement Lamp

The Ushio 8000123 SM-18566 is a 22.8V 50W halogen bulb with a G6.35 bipin base designed as a direct replacement for specific surgical lighting systems. It serves healthcare facilities maintaining Hanalux operating room lights where this exact ANSI-coded lamp is specified.

G6.35 Bipin Base Compatibility

The single specification that decides fit is the G6.35 bipin base combined with the 22.8V 50W rating and SM-18566 ANSI code. This lamp matches Siemens Hanalux 18566 and 18567 operating room lights; any fixture requiring a different base, voltage or ANSI code will not accept it.

Thermal Output and Rated Life

At 50 watts the lamp produces focused halogen output rated at 1000 lumens with an average life of 700 hours. In normal surgical use it generates significant heat consistent with halogen technology and draws 50W continuously; no forced cooling or ballast is required beyond the fixture's standard supply.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $11.99
Cheaper than about 70% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameUshio
Product typeHalogen Bulbs
Display
Light output1000
Power
Power rating50
More details
Lifespan (hours)700

Questions about this item

What does 50W at 22.8V mean for brightness in an operating-room light?

The lamp produces around 1000 lumens at that power level, giving a concentrated white output suited to surgical illumination.

How does the G6.35 base limit the fixtures this bulb can go into?

The G6.35 bi-pin base only fits sockets with 6.35 mm pin spacing, so it works in the Siemens Hanalux 18566 and 18567 operating lights but not in standard mains-voltage holders.

What clearance does the bulb need to mount inside the Hanalux housing?

The compact halogen capsule fits the existing Siemens Hanalux 18566 and 18567 sockets without any adapter or modification.

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