Low Thermal Conductivity Zirconia ZrO2 Mini Ceramic Motor Shaft
Main features of zirconia ceramic shaft:
1. Excellent wear resistance, over 276 times than stainless steel
2. Exceptional fracture toughness reaches up to 8 Mpa m1/2
3. Higher density than most of technical ceramics, over than 6 g/cm3
4. High hardness, over than 1300 MPa for Vicker
5. Low thermal conductivity, less than 3 W/m.k at room temperature
6. Chemical inertness, aging resistance and not rust forever
7. Resistance to molten metals due to an extraordinary melting
point
8. Can withstand higher temperatures up to 2400°
Specification of ceramic shaft:
1. Material options: YSZ zirconia, TTZ zirconia, 99~99.7% alumina,
Silicon carbide (SiC)
2. Forming method: ISO pressing, Dry pressed, Ceramic injection molding and so on
3. Specification: Available outer from 1mm to 50mm, available
length from 10mm to 500mm
4. Tolerance A: Diameter with tolerance 0.001mm, length with a
tolerance of 0.01mm
5. Surface finish: mirror surface, the working surface to be
diamond polished up to Ra0.1, or better
Description of zirconia ceramic shaft:
Zirconia ceramic shaft has outstanding low friction coefficient,
high surface quality, superb wear-resistance, chemical resistance
in comparison with metal shafts.
After precision processing, the diameter tolerance could be 0.005mm
by CNC machining, the surface roughness can be better than Ra0.1 by
diamond polishing, It greatly enhances the working efficiency,
increases the service life cycle and decreases the maintenance
times with the critical parameters of performance improved further.
Additionally, the coefficient of expansion thermal of zirconia is
equivalent to stainless steel, and the thermal conductivity is very
low, it results in the expansion tiny after assembly between the
ceramic part and the stainless steel part. It's extremely helpful
in sealing performance.
The zirconia ceramic shafts are produced by dry pressing or ISO
pressing, then obtain a very consistent dense ceramic body, it will
benefit to avoid crack.
Zirconium oxide ceramic shaft is widely used in petroleum,
chemical, food, textile, medical and other industries
Gallery of zirconia ceramic shafts
We produce various zirconia ceramic shafts in different
configurations with special design.
Datasheet of Technical ceramics
| Property | Units | Material |
| 99.5% alumina | 99%alumina | 95% alumina | ZrO2
(Y-TZP) | ZrO2 (TTZ) |
| Density | g/cm3 | ≥3.85 | ≥3.80 | ≥3.60 | ≥5.95 | ≥5.72 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1700 | 1700 | 1500 | 1300 | 900 |
| Flexural strength | Mpa | ≥379 | ≥338 | ≥320 | ≥1200 | ≥1200 |
| Compressive strength | Mpa | ≥2240 | ≥2240 | ≥2000 | ≥1990 | 1750 |
| Fracture toughness | Mpa m1/2 | 4-5 | 4-5 | 3-4 | 6.5-8 | 11 |
Max. service
temperature | ℃ | 1675 | 1600 | 1450 | 1000 | |
| CTE | 1×10 -6 /℃ | 6.5~8.0 | 6.2~8.0 | 5.0~8.0 | 8.0~9.5 | 10.2 |
| Thermal shock | T(℃) | ≥250 | ≥200 | ≥220 | ≥300 | 350 |
| Thermal conductivity(25℃) | W/m.k | 30 | 29 | 24 | 3 | 3 |
| Volume resistivity | ohm.cm | | | | | |
| 25℃ | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 14 | ＞1 x 10 11 | ＞1 x 10 11 |
| 300℃ | 1 x 10 12 | 8 x 10 11 | 10 12 -10 13 | 1 x 10 10 | 1 x 10 10 |
| 500℃ | 5 x 10 10 | 2 x 10 9 | 1 x 10 9 | 1 x 10 6 | 1 x 10 6 |
| Insulation strength | KV/mm | 19 | 18 | 18 | 17 | 20 |
| Dielectric constant(1Mhz) | (E) | 9.7 | 9.5 | 9.5 | 29 | 28 |
Manufacturing flow chart of ceramic shaft
We have in-housing comprehensive manufacturing types of equipment,
including forming, sintering, CNC machining,
precision grinding, laser cutting and so on, it helps us to control
the quality very well, also it greatly benefits cost control.
Packaging proposal and transportation solutions
1. We will keep the ceramic parts inside the inner package to be
fixed without moving, then it will prevent them from collision each
other,
to avoid any cause any chippings during transportation.
2. In addition, the inside of the outer carton will be filled with
sufficient protective kinds of stuff.
Why choose us?
★ 10+ Years of manufacturing experience in OEM, ODM ★ Powerful R&D,
mass production capability
★ In-house comprehensive manufacturing types of equipment ★
Rigorous quality control system and processes
★ Surpassing pre-sales and after-sales service ★ Abide all orders
as the first priority
FAQs(Frequently asked questions)
Q1. Are you a factory or trading company?
A: We are a manufacturer. You are welcome to visit our factory.
Q2: Do you send a sample to check?
A: Sure, the sample is free and freight collect.
Q3: When will you ship it?
A: If the products are in storage, we'll ship within 48 hours
Q4: When can I get the price?
A: We regularly quote within 24 hours after we get your inquiry. If
you are in urgent need of getting the price.
Please call us or tell us in your email so that we will proceed
with your inquiry as a priority.
Q5: Is it available to provide customized products?
A: We always support custom-made demand as per different materials,
dimensions, and designs.
Q6: How to ensure quality?
A: The dimension out of any batch will be carried out sampling
inspection per international AQL standard. A 100% cosmetic
inspection will be done.
Q7: What other products are you dealing with?
A: We focus on a variety of ceramic tubes, ceramic substrates,
ceramic sheets, textile ceramics besides metalized ceramics.
