Ceramic Gear Bushing / Ceramic Shaft Bushing Manufacturer & Supplier

Made of 99.5% high-purity alumina/zirconia; hardness HRA 88–92; wear resistance 10× higher than stainless steel.

Resists strong acids, alkalis, and high temperatures up to 1600°C (inert atmosphere); service life extended 3–8×.

Density only 3.8–4.0 g/cm³ (≈ 1/2 of steel), reducing inertia and energy consumption for high-speed precision transmission.

Surface roughness ≤ Ra 0.2 μm; friction coefficient as low as 0.05–0.1; stable operation without lubrication.

Dimensional accuracy up to ±0.001 mm; tolerance grade ISO h5 (customizable to h3).

Automotive: New energy motor bushings, gearbox seal rings

Chemical Machinery: Corrosion-resistant pump bushings, agitator transmission parts

Semiconductor Equipment: Vacuum chamber gears, wafer conveying shafts

Food & Pharma: Aseptic gear sets, corrosion-resistant filling valve bushings

Precision Molding: Isostatic pressing + CNC machining, ±0.001 mm accuracy.

Full Customization: ID 5–500 mm; SiC/Si₃N₄ coating available for reinforcement.

Efficient Delivery: 12,000 ㎡ production base; standard parts in 7–15 days.

Parameter	Specification
Material	99.5% High-Purity Alumina Ceramic / Zirconia
Density	3.8–4.0 g/cm³
Hardness	HRA 88–92
Compressive Strength	≥2800 MPa
Max Working Temp	1600°C (inert atmosphere)
CTE (20–1000°C)	7.2–8.6×10⁻⁶/°C
Corrosion Resistance	Resists 98% H₂SO₄, 40% HF (no corrosion in 48h)
Dimensional Tolerance	ISO h5 (customizable to h3)

Ceramic Sleeve/