Complete atomizer units and bell cup assemblies, localized compatible spare parts, and expert repair services — everything your electrostatic painting facility needs, from one partner.
The rotary bell atomizer (ESTA — electrostatic atomizer) is the core application device of modern automotive painting. Paint is metered to the centre of a bell cup rotating at tens of thousands of revolutions per minute; centrifugal force spreads it into an ultra-thin film that leaves the bell edge as a fine, uniformly charged mist.
The precision-machined bell edge breaks the paint film into droplets; higher speed means finer atomization and a smoother finish.
Charged droplets seek the grounded conductive body, wrapping around edges and rear surfaces — dramatically reducing overspray.
Shaping air forms an adjustable conical fan precisely matched to panel geometry and the robot path.
Only millilitres of paint remain inside the bell; colour change completes in seconds with minimal cleaning loss.
| Series | Bell diameter | Speed range | Typical paint flow | Application |
|---|---|---|---|---|
| Interior / Touch-up | D40-D52 | 40,000-70,000 rpm | 50-150 ml/min | Interior panels, pillars, engine bay, repair stations |
| Standard Exterior | D55-D65 | 20,000-50,000 rpm | 150-450 ml/min | Basecoat & clearcoat, exterior spraying robots |
| High-Flow / Primer | D65 bent-edge | 15,000-35,000 rpm | 300-600+ ml/min | Primer & primer-surfacer, high-throughput lines |
* Typical selection values — final parameters are confirmed against your paint material, process and robot system. Bell cup assemblies are supplied balanced (ISO 1940 G2.5 or better) as complete, ready-to-install units.
Bell cup assemblies are supplied complete — cup head, diffuser and mounting interface matched and balanced as one unit. Straight-edge and bent-edge profiles cover every application from interior touch-up to full exterior painting.
From the main atomizer body to the integrated flange, complete units are available for both paint chemistries — reducing downtime and simplifying maintenance on your existing platforms.
The turbine is the rotation core of the atomizer — and the component most demanding on precision. Replacement turbine assemblies and diffuser systems keep your bells spinning true.
A single source for the wear parts that keep paint lines running — supplied locally to cut lead time, cost and single-source risk.
Worn components are restored rather than scrapped — with test reports and a one-year warranty on key assemblies, keeping your life-cycle cost low.
| Parameter | Conventional Air Spray | Rotary Bell (ESTA) |
|---|---|---|
| Transfer efficiency | 30-50% | 80-90% |
| Droplet size | 20-60 µm | 15-25 µm |
| Film uniformity | Good, operator-dependent | Excellent, machine-consistent |
| Best for | Small batches, touch-up, repairs | High-volume exterior & interior painting |
Example: to deposit the same 40 µm clearcoat film, moving from 50% to 85% transfer efficiency cuts paint consumption from roughly 1.0 L to about 0.6 L per body.
Robotic bells spray basecoat and clearcoat with maximum efficiency and film quality.
Compact bells with switched-air patterns reach doors, pillars and engine bays.
High-speed atomization aligns metallic flakes and masterfully handles waterborne films.
Electrostatic solutions for bumpers and trim with conductivity management.
Replace aging atomizer platforms while keeping robots and booths — a fraction of full-line capex.
Nearly 30 coating lines delivered. Let us help you plan, build or upgrade yours.
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