Mirror Polished Textile Custom TiO2 Titania Ceramic Bobbin for
Winding Machine
Features of titania ceramic bobbin:
1. Exceptional bending strength, hardness, toughness
2. Corrosion resistance in harsh working conditions
3. Good insulation, anti-magnetic, free static electricity
4. Nox-toxic, healthy material, eco-friendly material
5. Excellent thermal shock resistance and good thermal stability
6. Meet with RoHS, REACH regulation completely
Specification of titania ceramic bobbin:
1. Raw material: titania,95% alumina, 99% alumina, zirconium oxide
2. Dimensions: min. diameter can be 10mm, max. diameter can be 50mm
3. Design: single groove, double grooves, or multiple grooves
4. Tolerance: general tolerance ± 1% of the dimensions, or better
via a precision process
5.Surface finish: mirror surface, to be Ra0.3 ~ 0.4 for 95% alumina
ceramic eye, to be Ra 0.2 ~0.3 for 99% alumina ceramic eye
Description of titania ceramic bobbin:
Ceramic rollers are used to change the direction and guide the
direction of enameled wire. The ceramic bobbin in the central
section is made of precision ceramics, and the groove is to be
polished up to Ra0.2, a high-speed bearings are installed in the
ceramic bobbin so that the sliding distance between the enameled
wire and the ceramic bobbin is less than 0.2mm to ensure the
jumping of enameled wire within a very tiny range during winding.
The baffle plates on both sides of the ceramic roller prevent the
enameled wire from jumping out during winding, and at the same time
keep the tension during winding stable.
Technical datasheet of typical materials for ceramic wire rollers
| Property | Units | 95% alumina | 99% alumina | 99.5% alumina | Zirconia | Titania |
| Color | | White, pink | White, pink, ivory | Pink, ivory, white | White, Yellow | Black, Gray, Yellow |
| Density | g/cm3 | ≥3.60 | ≥3.80 | ≥3.85 | ≥6.0 | ≥4.0 |
| Water absorption | % | 0 | 0 | 0 | 0 | 0 |
| Hardness | HV | 1500 | 1700 | 1700 | 1300 | 800 |
| Flexural strength | Mpa | ≥320 | ≥338 | ≥379 | ≥1200 | ≥158 |
| Compressive strength | Mpa | ≥2000 | ≥2240 | ≥2240 | ≥1990 | |
| Fracture toughness | Mpa m1/2 | 3-4 | 4-5 | 4-5 | 6.5-8 | 3.2 |
| Thermal Expansion Coefficient(20-800℃) | 1×10 -6 /℃ | 5.0~8.0 | 6.2~8.0 | 6.5~8.0 | 8.0~9.5 | 8.8 |
| Thermal conductivity | W/m.k (25℃) | ≥220 | ≥200 | ≥250 | ≥300 | ≥330 |
| Max. service temperature | ℃ | 1500 | 1600 | 1675 | 1000 | 1000 |
| Insulation strength | KV/mm | 18 | 18 | 19 | 17 | 3.93 |
| Dielectric constant (1Mhz) | (E) | 9.5 | 9.5 | 9.7 | 29 | 85 |
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
FAQ
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.
