Custom Replacement Cow Brush Heads: How to Measure, Specify and Order

1. What a replacement cow brush head is

A cow brush head is a cylindrical brush roller: a core tube or shaft densely filled with stiff synthetic filament, with a mounting hub, flange or keyway so it locks onto the machine's drive. When a cow pushes against it, the machine starts rotating and the filament scratches and massages the animal's back, sides and neck.

Technically it belongs to the same family as industrial roller and cylinder brushes, but the filament, density and finish are tuned for contact with animals rather than for cleaning conveyor belts or surfaces. You can see a typical example on the replacement cow brush head product page.

Dairy research and everyday farm experience agree on why these machines are worth maintaining: cows use them to groom areas they cannot reach themselves, coats stay cleaner, animals appear more comfortable, and the brush is widely regarded as a simple contribution to cow welfare. All of that depends on a head that is still in good condition.

2. Signs the brush head is worn

Brush heads wear gradually, so it is easy to miss the point where a head stops being effective. Manufacturer guidance is that a head serving a pen of about 50 cows typically needs replacing roughly every 18–24 months. Larger groups and heavier use shorten that interval, so treat it as a planning figure, not a fixed rule.

Between planned replacements, look for these signs:

• Flattened or bent filament: the bristles no longer stand up and lie over in the direction of rotation.
• Missing tufts or bald patches: gaps in the fill where filament has broken off or pulled out.
• Uneven diameter: one end or one side noticeably shorter than the rest, often where cows lean most.
• Soft, limp feel: the filament no longer has enough stiffness to scratch effectively.
• Reduced use: cows visit the brush less often or for shorter periods than they used to.
• Damage at the core or hub: cracks, a worn keyway or play at the mounting point.

3. What to measure before you order

Every machine brand and model mounts its head differently, so we do not work from a standard size list. Diameter, length, core and mounting interface are made to match your machine and confirmed for each order from a sample, a drawing or your measurements. If in doubt, sending the worn head or a drawing is the most reliable route. For background on cores and fill on roller brushes in general, see how to choose a cylinder roller brush. These are the dimensions that matter:

4. Filament choice: PP or nylon

The filament is what the cow actually feels, so it is the most important specification after fit. Cow brush heads are normally filled with polypropylene (PP) or nylon at a filament diameter of about 2.0–2.5 mm. That range is stiff enough to scratch and massage through the coat, yet flexible enough to stay animal-friendly.

Whichever material you choose, it should be UV-stabilized. Many cow brushes are installed in open barns or near outdoor areas, and filament without UV stabilization becomes brittle when exposed to sunlight over time.

• PP: the economical, widely used choice for general barn use; light and unaffected by moisture.
• Nylon: chosen when the buyer wants filament that holds its shape and recovers well after bending, usually at a higher cost than PP.
• Matching your existing head: if the current head works well for your herd, the simplest option is to replicate its material, filament diameter and stiffness.

5. Custom options

Beyond matching the fit, several details can be specified for each order:

• Color: blue and yellow are common; custom colors are available to match a machine brand or dealer identity.
• Fill density: heavier or lighter fill to match the original head or adjust the brushing feel.
• Core and hub: core tube, shaft and mounting parts made to your sample or drawing.
• Filament: PP or nylon, UV-stabilized, with a diameter in the 2.0–2.5 mm range.
• Branding and packaging: private label, custom cartons and labels for dealers and distributors.

6. How ordering works

Most cow brush head orders follow the same path as any custom OEM process: you share what you have, the factory confirms a specification, a sample is made if you want one, then bulk production follows. A sample lets you check the fit and how your herd accepts the head on your own machine before you commit to quantity.

To get an accurate quote, send the following through Request a Quote:

• Clear photos of the old brush head, including both ends and the mounting hub
• Outer diameter, overall length and filled length
• Core tube and shaft dimensions and the mounting interface (hub, flange, keyway or bolt pattern)
• Rotation direction, if your machine requires it
• Machine brand and model, if known
• Filament material (PP or nylon) and color preference
• Quantity, and whether you need samples first
• Any private-label or packaging requirements

7. For dealers, distributors and OEM machine makers

Farm-equipment dealers and distributors usually need the same head for many customers running the same machine. Once a specification is confirmed it can be repeated for later orders, so replacement stock stays consistent from batch to batch.

OEM machine makers can source heads as a component for their own machines, specified to their drawing and supplied with their own branding and packaging. Because we supply only the brush head, it fits alongside your existing motor, frame and controller supply chain rather than replacing it.

If you also buy other cylinder brushes, such as a nylon conveyor cylinder brush, the same factory cluster can quote them in one inquiry.

Frequently asked questions

Do you sell complete rotating cow brush machines?

No. We supply only the replaceable brush head (brush roller). The motor, frame, controller and complete machine are not part of our range; the head is made to fit the machine you already have.

Can you make a head for my machine brand?

Usually yes. Send photos of your old head plus measurements (outer diameter, overall length, core/shaft dimensions and mounting interface), or a drawing or sample. The fit is confirmed for each order before production.

How often should a cow brush head be replaced?

Manufacturer guidance is roughly every 18–24 months for a head in a pen of about 50 cows. It varies with herd size and use, so watch for flattened or missing bristles, gaps in the fill and reduced cow use.

Should I choose PP or nylon filament?

Both are used at about 2.0–2.5 mm diameter and both should be UV-stabilized. PP is the common economical choice; nylon is chosen when better shape retention is wanted. If your current head works well, matching it is the safest option.

Can I get a sample before a bulk order?

Yes. Samples can be made before bulk production so you can check the fit and how your herd accepts the head. Ask for one through [Request a Quote](/rfq).

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