★ Flagship · Ceramic Grinding Media

Silicon nitride grinding balls,
zero contamination.

Si₃N₄ grinding balls for hard mineral milling, battery electrode slurries, and ultra-high-purity ceramic powder production. Hardness 78 HRC — outlasts alumina media 3–5×. Zero metal contamination critical for battery and electronics applications.

78 HRC

Hardness

0.4–100mm

Bead Size

3–5×

Longer than Al₂O₃

Zero

Metal Contamination

Request a Quote →Download Datasheet ↓

Si₃N₄ Grinding Balls · At a Glance

MaterialSi₃N₄

Density3.2 g/cm³

Hardness78 HRC

Size RangeØ 0.4–100mm

ContaminationZero metal

Wear vs Al₂O₃3–5× lower

Sample Lead Time48 h

Certifications & Standards

ISO 9001IATF 16949CERoHS · REACHUL Recognized

01 · Size Ranges

Three size ranges for every mill.

Fine beads for high-energy attritor and bead mills; coarse balls for ball mills and rotary drums. All sizes: same Si₃N₄ composition, same zero-contamination performance.

★ Battery Applications

Fine Beads

Ø 0.4–1 mm · bead mill

⚫

Fine beads — macro photo

SizeØ 0.4–1mm

Hardness78HRC

Density3.2g/cm³

D50 Target<1µm

ApplicationBattery slurry

Use: Battery cathode/anode · pigments · ultra-fine grinding

Medium Balls

Ø 1–10 mm · versatile

⚙️

Medium balls — jar mill

SizeØ 1–10mm

Hardness78HRC

Density3.2g/cm³

D50 Target1–50µm

ApplicationCeramic powder

Use: Ceramic powders · coatings · minerals

Coarse Balls

Ø 10–100 mm · ball mill

🏭

Coarse balls — drum mill

SizeØ 10–100mm

Hardness78HRC

Density3.2g/cm³

D50 Target50–500µm

ApplicationHard minerals

Use: Hard minerals · coarse ceramic grinding

All Si₃N₄ grinding balls: certified zero Fe contamination · batch-to-batch consistency · material cert with every shipment.

02 · Datasheet & Downloads

Drawings, datasheets, and certs.

Everything your engineering and procurement teams need. Email engineering@ceramitell.com for STEP/DWG files.

📄

Product Datasheet

PDF · full specifications

Download PDF →

📐

2D / 3D Drawings

STEP · DWG · PDF · on request

Request files →

🛡️

Certification Files

ISO 9001 · CE · RoHS · REACH

Request scans →

03 · Certifications & Compliance

Certified for global markets.

All products shipped with certificate of conformity. Additional certification documentation available for OEM qualification programs.

ISO

ISO 9001 quality management system. Full lot traceability and PPAP-level documentation for OEM programs.

Quality System

CE marking for European Union shipments. Declaration of Conformity provided with CE-marked products.

European Union

RoHS

RoHS and REACH compliant. Material declarations available for restricted-substance compliance screening.

EU · Global

IATF

Produced in an IATF 16949 / ISO 9001 facility. PPAP documentation available for automotive-adjacent applications.

Quality System

04 · Get a Quote

Request a quote for Si₃N₄ grinding balls.

Tell us your specification, dimensions, grade, and annual volume. Our engineers reply within one business day with a quote and matched datasheet.

Free samples, 48-hour dispatch on stock items — no MOQ.
Custom to drawing: DFM review in 48h, prototype in 14 days.
Direct manufacturer pricing — no trading layer.
ISO 9001 certified — full material certs with every shipment.

Free Quote · Reply in 24h

Request a quote

Specify bead size (mm), application (battery/pigment/mineral), and annual weight requirement (kg/yr).

05 · Engineering FAQ

The questions we get most.

Why Si₃N₄ for battery cathode milling?

Battery slurry requires zero Fe contamination — Si₃N₄ contributes no metal ions. Hardness 78 HRC means 3–5× lower wear than alumina, further reducing contamination risk and lowering media replacement frequency.

What size bead for my application?

Target D50 determines optimal bead size: D50 < 1µm → use ≤0.5mm beads. D50 1–10µm → 1–3mm beads. D50 > 10µm → 3–10mm. Send your feed D90 and target D50 — we'll recommend.

How do I calculate media charge?

Standard: 50–60% of mill volume. Si₃N₄ density 3.2 g/cm³ (lighter than ZrO₂ at 6.0 g/cm³) — adjust fill weight accordingly. We'll advise on your specific mill geometry.

Wear rate vs alumina and ZrO₂?

Si₃N₄ wear rate: 3–5× lower than alumina, 1.5–2× lower than ZrO₂ in hard abrasive slurries. Higher initial cost offset by longer replacement intervals and lower contamination.

What sample quantity is available?

No MOQ on samples: 100g to 1kg sample packs for mill trials. No charge for qualification samples. Sample charges credit against first production order.

What documentation is supplied?

Material certificate (XRF purity), SDS, and lot traceability with every shipment. Trace metal content cert for battery manufacturer qualification programs.

06 · Related