JCB 5.5W LED Golf Ball Bulb B22 Cool White 4000K Non-Dimmable

The JCB 5.5W LED golf ball bulb delivers 470 lumens of cool white 4000K light through a compact 45mm diameter globe on a standard B22 bayonet cap fitting. The 5.5W consumption replaces a traditional 40W incandescent bulb, reducing running costs by 85% while providing the same task-appropriate light output for kitchens, bathrooms, utility rooms and workspaces.

Designed for ceiling pendants, table lamps, wall brackets and enclosed fixtures that accept golf ball bulbs, the B22 bayonet cap fits standard UK lampholders with a quarter-turn twist-lock action. The 4000K colour temperature sits between neutral and cool white, providing crisp, focused light that aids visibility for tasks like food preparation, reading small print, and detailed work without the yellow cast of warm white bulbs.

The compact golf ball shape at 78mm total height suits smaller lampshades and decorative fixtures where a standard A60 bulb would protrude. The 180-degree beam angle provides wide coverage from a single bulb, reducing the need for multiple fittings in small to medium-sized rooms. The non-dimmable design maintains consistent output and prevents the flicker that can occur when non-compatible bulbs are paired with dimmer switches.

Rated Energy Rating F under the updated EU energy labelling scheme (which recalibrated the scale in 2021, making F equivalent to the previous A+ rating), the bulb balances efficiency with light quality. The frosted finish diffuses the LED chips inside, removing visible hotspots and providing even light distribution across the bulb surface.

Is this bulb dimmable?

No. The bulb is non-dimmable and should not be used with dimmer switches, as this can cause flicker, reduced lifespan or complete failure. For dimmable alternatives, search for JCB dimmable LED golf ball bulbs at Niori.

What colour temperature is 4000K?

4000K is cool white, sitting between neutral white (3500K) and daylight white (5000K-6500K). It provides crisp, clean light without the blue cast of very high colour temperatures, and suits task-focused rooms like kitchens, bathrooms and home offices.

Will this fit my existing bayonet fitting?

Yes, if your existing fitting uses a B22 bayonet cap (the standard UK push-and-twist bulb base). The bulb is 45mm wide and 78mm tall, so check your lampshade or fitting has clearance for these dimensions.

How does 470 lumens compare to older bulbs?

470 lumens is approximately equivalent to a traditional 40W incandescent bulb. For reference, a 60W incandescent produces around 700-800 lumens, while a 25W incandescent produces around 200-250 lumens.