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Clear cylindrical incandescent bulb with double-contact bayonet base

Ushio

Ushio CAX/130V 50W 130V BA15d standard bulb

SKU CH-QAF8-S9T5B

50-watt incandescent bulb with BA15d base, 130 V operation and 100-hour rated life

  • Power rating50
  • Lifespan (hours)100
  • Product typeIncandescent Bulbs
  • 50 W incandescent output for projector illumination
  • 130 V rating matches equipment power supply
  • BA15d double-contact bayonet base ensures secure fit
  • T-8 tubular envelope fits 3.100 in (78.7 mm) housings
  • 100-hour rated life for scheduled replacement cycles

Direct replacement for CAX-coded projectors

The Ushio CAX/130V lamp matches the ANSI CAX/130V code and fits fixtures that require a BA15d double-contact bayonet base. It operates at 130 volts and draws 50 watts, making it a direct replacement for projectors and specialised lighting equipment specifying this exact ANSI designation.

Fits BA15d sockets with 3.100-inch clearance

The T-8 envelope measures .984 inches in diameter and 3.100 inches in overall length, with a light centre length of 1.400 inches. These dimensions determine whether the lamp seats properly in the optical path and clears the housing. Verify the fixture accepts a BA15d base and provides at least 3.100 inches of axial space before installation.

Rated for 100 hours at full output

The incandescent filament delivers rated output for an average of 100 hours before replacement is needed. Plan for periodic change-out in continuous-use installations such as projection systems or stage lighting. The 50-watt draw at 130 volts remains steady throughout the rated life, so output does not shift during the service interval.

How it compares

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

Price $7.99
Cheaper than about 83% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameUshio
Product typeIncandescent Bulbs
Power
Power rating50
More details
Lifespan (hours)100

Questions about this item

How long will the 100-hour rated life last under continuous daily use?

The bulb carries an average rated life of 100 hours, so continuous operation will require replacement after approximately that many hours.

What heat or noise should I expect when the 50 W incandescent lamp runs all day?

As a 50 watt incandescent lamp it generates noticeable heat during extended use; no fan or moving parts means it operates silently.

Which fixture or socket must I already have for the BA15d base to work?

You need a socket that accepts a BA15d double-contact bayonet base, rated for 130 V operation.

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