Most production lines are not served by a catalogue brush roller. Dimensions, shaft geometry, and filament mix are specific to the machine and the substrate. Yet custom rollers are less risky than most buyers assume — provided the specification stage is done properly. Here is how a custom brush roller is specified, built, and verified.
Three Ways to Start a Custom Order
- From a drawing. Send CAD in STEP or DWG, or a dimensioned PDF. We confirm tolerances and return a production drawing for your sign-off before anything is manufactured.
- From a sample. Ship the existing or worn roller. We reverse-engineer the diameter, length, hole pattern, and filament, then match or improve on them.
- From a spec sheet. Fill in diameter, length, core material, filament, density, and application; we propose a build and quote.
The Dimensions That Actually Matter
- Roller diameter (30–600 mm): controls surface speed and contact pressure on the substrate.
- Working length (50–4000 mm): matched to your machine width, with allowance for end fittings.
- Core material: steel, stainless 304/316, aluminium, or PVC — chosen by the environment (humidity, chemicals, weight limits).
- Filament type and diameter: nylon, PP, abrasive, steel, or natural — plus filament thickness, which sets stiffness.
- Filament density (80–600 filaments/cm): the single biggest lever on cleaning or finishing force.
- Shaft and end treatments: keyway, bearing seat, thread, or fully custom mount.
Why a Production Drawing Matters
The most common cause of a failed custom order is an assumption left unstated — which end carries the drive keyway, which way the helix runs, how much clearance the machine needs. A production drawing forces every one of those assumptions into the open before manufacturing. We produce one for every custom order and do not start cutting until it is approved.
The Build Process
- Specification review. We confirm every dimension and material against the application — temperature, chemical exposure, abrasion, and speed.
- Drawing or sample approval. Nothing is manufactured until you sign off on the drawing or the prototype.
- Manufacturing. Filament planting, trimming, and dynamic balancing to ±0.5 mm diameter tolerance.
- Inspection and shipping. Each roller is inspected; reports are available on request. Sample lead time is typically 7–15 days after drawing approval.
Custom vs Modular — Choose Deliberately
Custom is right for a new line, a unique geometry, or replacing an OEM roller with no available spare. If your roller is a standard type, a modular roller gives a lower lifetime cost because you only ever replace worn segments, not the core. Many buyers start with a custom roller and then move their repeat orders onto modular cores — the first build proves the specification, and later orders become cheap and fast.
What to Send Us
At minimum: diameter, working length, core material, filament preference, density, and the application. Photos with a ruler are enough if you have no drawing. Send those and we will come back within 24 hours with either a quote or a short list of clarifying questions — never a guess.