Cylinder Mower Parts

Bottom Blades

Cylinder Mower Parts

Cylinder Reels

Parts for 17", 14" and 20" Rover and Scott Bonnar cylinder mowers, including the popular Model 45. These mowers rely on a cutting cylinder running against a fixed bottom blade, driven by a chain and clutch system, so wear items in this range cover all of those stages.

You'll find bottom blade knives sized to your mower's cutting width, chain links and connecting links for the drive chain, clutch springs and cables, plus bearings, bushes and thrust pads that support the cutting cylinder and rollers. There are also smaller hardware items like keys, adjuster bolts, bearing shields and grass catcher rubbers.

  • Cutting cylinder bearings, bushes and thrust pads
  • Bottom blade knives in 14", 17" and 20" sizes
  • Chain, chain links and clutch components
  • Rollers, end caps and grass catcher rubbers

Check your mower's deck width and model (such as Rover or Scott Bonnar 45) against the part description before ordering, as cylinder mower components are specific to cutting width and model.

Frequently asked questions

How do I know which bottom blade knife fits my mower?

Bottom blade knives are sized to the cutting width of your mower, such as 14", 17" or 20", so check your mower's deck width and match it to the listed size.

What's the difference between the chain and the chain connecting link?

The chain itself is the full drive chain, while the connecting link (or half link) is used to join chain sections or adjust chain length when fitting a new chain.

Do Rover and Scott Bonnar 45 mowers use the same parts?

Many parts are shared between Rover and Scott Bonnar 45 cylinder mowers, but it's best to check the specific part number against your model to be sure.