Zodiac Brush Roller CN (Set of 2) - FreeRider FR1000/FR2000 iQ, Duo-X DX3000/DX4000/DX4050 iQ, CX40/CX50, Astralpool QB600/QB800 - R0896400
Zodiac Brush Roller CN (Set of 2) - FreeRider FR1000/FR2000 iQ, Duo-X DX3000/DX4000/DX4050 iQ, CX40/CX50, Astralpool QB600/QB800 - R0896400 is temporarily out of stock and will ship as soon as it's available.
Don't Guess - Ask Us!
Don't Guess - Ask Us!
Not sure if it’s the right part? Send us a message and a photo of what you’re replacing, or what you need, and we’ll help make sure you get the right part the first time.
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Delivery and Shipping Info*
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Zodiac Brush Roller CN (Set of 2) - FreeRider FR1000/FR2000 iQ, Duo...
Zodiac Brush Roller CN (Set of 2) - FreeRider FR1000/FR2000 iQ, Duo-X DX3000/DX4000/DX4050 iQ, CX40/CX50, Astralpool QB600/QB800 - R0896400 is temporarily out of stock and will ship as soon as it's available.
Zodiac Brush Roller CN (Set of 2) - FreeRider FR1000/FR2000 iQ, Duo-X DX3000/DX4000/DX4050 iQ, CX40/CX50, Astralpool QB600/QB800 - R0896400
Genuine Zodiac / Astralpool R0896400 - a pair of brush rollers for the CN chassis robotic pool cleaner. These are the driven rollers that carry the scrubbing brushes and agitate dirt off the pool surface ahead of the intake.
- We keep these physically in stock for fast shipping or local pick-up, unlike most drop-shipping websites.
- Shipped from VIC, NSW, WA, QLD
Suits the following robotic pool cleaners
- Zodiac FreeRider FR1000 iQ, FR2000 iQ
- Zodiac Duo-X DX3000, DX4000, DX4050 iQ
- Zodiac CX40, CX50
- Astralpool QB600, QB800
Related roller parts
- Outer bearing CN - R0896600: the bushings the roller shaft turns in
- Roller support CN - R0896500: the intermediate plate that locates the roller
- 12 point gear CN - R0896700: the sprocket that drives the roller
- Brush scrubber CN grey - R0896900: the replaceable scrubbing strips
Part details
- Manufacturer part number: R0896400
- Supplied as: Set of 2
- Component: Brush roller / brush holder
- Chassis platform: CN
- Genuine: Yes, genuine Zodiac / Astralpool spare part
When to replace them
- Roller is cracked, distorted or no longer holds the brush strips
- Roller no longer turns freely, or turns with play in the shaft
- Scrubbing performance has dropped off with fresh brushes fitted
- Splined ends are rounded and slip on the drive gear
Fitment disclaimer
The models listed above are the applications we have been able to confirm. Zodiac, Astralpool and Polaris share components across several cleaner families and revise part numbers over time, so this list may not be exhaustive and your machine may use a different part. Always match the part number on your existing component, or contact us with photos plus your model and serial details, before ordering.
As with all products, these must be diagnosed and fitted by a qualified and experienced person.
Manufacturer Catalogues, Diagrams & Part Numbers
Need exploded views, spare part numbers, product numbers, diagrams, or more product information? See the manufacturer catalogues: Astralpool Catalogue 2026 | Zodiac Catalogue 2026
To the layperson, plumbing sizes and their names can be confusing due to the nominal sizes and naming conventions used.
This is not something we made up. Plumbers and manufacturers have used nominal (meaning ‘by name only’) sizing for decades.
Simply put, in plumbing, named sizes are often not the actual measurements of the pipe, fitting, or part. A PVC pipe called “50mm” or “2"” does not measure 50 mm anywhere. Instead, it follows nominal sizing, an internationally-standardised naming system.
Almost all fittings we use in the pool & spa industry use “pressure PVC” pipe & fittings. Do not confuse with “DWV” or other pipe & fittings and their names and sizes.
Use the Outside Diameter (OD) to check your pipe against fittings. Below is a quick reference for common spa & pool pipe sizes:
| Imperial Name | Metric Name | Pipe Diameter (OD) |
|---|---|---|
| 1/2" | 15mm | ~21.2–21.5 mm |
| 3/4" | 20mm | ~26.6–26.9 mm |
| 1" | 25 mm | ~33.4–33.7 mm |
| 1.5" | 40 mm | ~48.1–48.4 mm |
| 2" | 50 mm | ~60.2–60.8 mm |
| 2.5" | 65 mm | ~75.2–75.5 mm |
To reiterate, these are nominal sizes and are designed to fit matching fittings — not to measure what their name suggests. These are based on PVC Pressure Pipe AS/NZ 1477 Dimensions1.
- º Internal diameters vary slightly by manufacturer and class.
- 1 Not all pool/spa fittings match these dimensions exactly. Some do not follow Australian or international standards. Chinese spas may use proprietary fittings.
Understanding Plumbing Sizes & Nominal Measurements
Plumbing sizes can be confusing. PVC and many other pipe systems use nominal sizes—the size is a name, not the exact measured dimension. This convention is used across most pool and spa systems and other plumbing areas so that pipes and fittings remain compatible.
Why pipe sizes don’t match the measurements
The Nominal Pipe Size (NPS) system standardises pipe dimensions so that pipes, fittings, valves, and accessories interoperate.
Plumbers work with these nominal names every day, but DIYers can be tripped up if they try to match by a tape-measure alone.
How to Measure Pipe Correctly
-
Pipe size is identified by:
- The pipe’s Outside Diameter (OD).
- The fitting’s Inside Diameter (ID) (socket opening).
- Pipe Class / Schedule (e.g., Class 9, 12, 18 or Sch 40) relates to wall thickness and therefore the Internal Diameter (ID) and pressure rating.
- The outside diameter of a fitting is not useful (wall thickness varies by manufacturer).
Hose & Tube Dimensions
Common flexible hose sizes used in pool/spa systems (approximate IDs).
| Imperial Name | Metric Name | Inside Diameter (ID) |
|---|---|---|
| 3/8" | 9–10 mm | ~9 mm |
| 3/4" | 19 mm | ~19 mm |
BSP – British Standard Pipe Thread Sizes
BSP thread names are also nominal. The thread OD will not equal the nominal name.
| BSP Thread Size Naming | Outside Diameter (mm / inch) | TPI |
|---|---|---|
| 1/16" BSP | 7.7 mm / 0.304" | 28 |
| 1/8" BSP | 9.7 mm / 0.383" | 28 |
| 1/4" BSP | 13.16 mm / 0.518" | 19 |
| 3/8" BSP | 16.66 mm / 0.656" | 19 |
| 1/2" BSP / 15 mm | 20.99 mm / 0.825" | 14 |
| 5/8" BSP | 22.99 mm / 0.902" | 14 |
| 3/4" BSP / 20 mm | 26.44 mm / 1.041" | 14 |
| 7/8" BSP | 30.20 mm / 1.189" | 14 |
| 1" BSP / 25 mm | 33.25 mm / 1.309" | 11 |
| 1-1/4" BSP | 41.91 mm / 1.650" | 11 |
| 1-1/2" BSP / 40 mm | 47.80 mm / 1.882" | 11 |
| 2" BSP / 50 mm | 59.61 mm / 2.347" | 11 |
| 2-1/4" BSP | 65.71 mm / 2.587" | 11 |
| 2-1/2" BSP | 75.18 mm / 2.960" | 11 |
| 3" BSP | 87.88 mm / 3.460" | 11 |
| 4" BSP | 113.03 mm / 4.450" | 11 |
| 5" BSP | 138.43 mm / 5.450" | 11 |
| 6" BSP | 163.83 mm / 6.450" | 11 |
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R0896400
