Road sweeper side brushes are replaced more often than any other part of the machine. They touch the kerb every working hour, and a worn or wrongly specified brush does not just sweep badly — it drops debris back into the gutter and increases fuel and labour cost. For fleet buyers and maintenance managers, side brush replacement is therefore not a purchase decision but a specification decision. This guide covers the four things to confirm before you order, and how to buy at factory-direct terms.
Confirm the Three Critical Dimensions
A side brush is defined by outer diameter, core bore and mounting hole pattern. Most municipal sweepers run side brushes between 300 mm and 800 mm in diameter. Measure the old brush across the bristle face for OD, measure the centre bore, and photograph the hub from the front so the bolt pattern is visible. If your brush is waisted — thicker in the middle than at the edge — say so when you request a quote, because waisted and flat brushes are different dies.
Choose the Right Filament for Your Streets
Three filament families cover almost every application:
- Polypropylene — the general-purpose choice. It will not scratch painted kerbs or coated surfaces and holds stiffness in wet conditions.
- Crimped steel wire — two to three times the life of poly on abrasive debris such as sand and construction spoil. Avoid it where surface marking matters.
- Poly/steel combo — the most common specification for municipal fleets. Steel does the aggressive work; poly protects the surface and carries fines.
If you sweep a mix of asphalt and concrete kerbs, start with a combo and adjust after one replacement cycle.
Know the Real Replacement Interval
There is no universal number of hours, because down-pressure, surface and debris differ by route. The practical rule used by most fleets: inspect weekly and replace the brush when bristle length falls below about two-thirds of the original. Running a brush past that point does not save money — it unbalances the brush, loads the side brush motor and can wear the hub.
Buy on Factory Terms, Not Catalogue Terms
Buying replacement brushes through a dealer works, but you pay a margin for stock the dealer does not manufacture. Ordering directly from a brush manufacturer changes three things:
- Custom is normal. With 300+ existing moulds, a different diameter or pin layout usually needs no new tooling.
- Counter-sample first. You approve a sample built to your spec before mass production.
- Volume pricing without middlemen. Typical MOQ is 50 pieces for standard sizes, with better rates at 200+.
How to Start
Send the machine make, model and year, plus one photo of the current side brush with a ruler in frame. A manufacturer reply within 12 hours should confirm fitment, quote MOQ and lead time, and offer a sample. That single email removes most of the risk from the purchase.
Spec your replacement side brush now: Sweeper Side Brush product page · Full sweeper brush range
