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What is a headset bearing?

By Rachel Newton

What is a headset bearing?

Your bike’s headset is the bearing assembly that keeps your fork attached to your bicycle, and it’s what allows you to turn your fork and handlebars to steer your bicycle.

Are integrated headsets good?

True, an integrated headset can give the bike a nice, smooth looking front end, but the consequences of this change to your bicycle are significant. Simply put, the performance and lifetime that you expect from your new bicycle will be reduced, most severely in aluminum mountain bikes.

How are integrated headsets measured?

calls Integrated headsets ‘IS’. If you can see a headset cup outside of your frame, even just a flange or lip (as in the photo above) then your headset is Press Fit. If you can’t see a headset ie. it’s entirely sitting inside the frame head tube, then your headset is Integrated.

What is a fully integrated headset?

What is an “Integrated” headset? It is a bicycle frame, fork and bearing system designed to eliminate the humble headset cup. To integrate means to combine and hopefully to simplify.

Should I grease my steerer tube?

Greasing an aluminum steerer isn’t normally necessary, but can be helpful because it’s possible for the aluminum to corrode in some situations. And carbon just doesn’t corrode or rust, but a bit of grease on a carbon steerer in the area where it is near the headset cups/bearings can’t hurt.

How does a Bicycle headset work?

All bicycle headsets work in a similar way – there are two bearings, one for the top and one for the bottom of the headtube, and your fork’s steerer tube passes through the headtube with lower and upper bearings. The steerer tube protrudes out past the upper head tube and is clamped down and held in place by the handlebar stem.

What are the headset cups for headphones?

Press-fit head tubes require headset cups that are pressed into the bicycle headtube, and the headset bearings sit inside those headset cups. You can have ZS (Zero Stack) headset cups or EC (External Cup) headset cups.

What is the race of a headset bearing?

Older loose bearings rolled directly on the hardened steel race. Incidentally, the interface between bearing and fork is called the race (crown race and top race) because it originally acted as the raceway, with the bearing balls in the headset rolling directly on it.

Will the is42/286 is52/40 work on an integrated headtube (is)?

IS42/28.6 IS52/40 would work on an integrated headtube (IS) that has an upper headtube with a 41.8mm inside diameter (which we round up to 42mm) and a lower headtube inside diameter of 52mm, and the fork would have a 1 ⅛ in to a 1.5 in tapered steerer tube.