Zirconia Ceramic Guide for Textile Machine , Ceramic Yarn Guide
| | Pulleys and Guide Rollers - Rollers, Rings, Cylinders, Capstans | Covering the subject of pulleys, rollers, capstans and cylinders we
offer individual solutions for your production process. Do you have
special requirements? Is your process particularly wear intensive?
Are you producing under extreme conditions? Reduce wear and rejects
with our high quality guide materials. You need well priced
standard materials with short delivery times? Please talk to us;
from our wide range of products in different material combinations
we will find the best choice for you. Our mission is to help you
save cost.
 | Guide rollers, pulleys,
capstans, rings, cylinders - Aluminum, steel, copper, bronze
- Plastic rollers
PE, Polyamid (Nylon), POM (Delrin) - Solid ceramics i.e. aluminum oxide (Al2O3), zirconium oxide (ZrO2)
- Composite ceramics
ceramic / aluminum
ceramic / plastic (flanges) - Aluminum pulleys, Steel pulleys with ceramic coating
Aluminum oxide coatings, chromium oxide coatings (Cr2O3) - Hardened
- Tungsten carbide coating
- Surface qualities
turned, ground, polished, diamond polished - with or without bearings
- Replacement pulleys and rollers for common brand name machines:
Niehoff, Henrich, Schmidt, Koch,
Sket, Lesmo, SAMP, Bühler etc.
| | Applications - Guide pulley
- Traverse pulley
- Roller
- Dancer pulley
- Straightening roller
- Wire guide roller
- Crane pulley
- Wire rollers
- Pullout capstan
- Guides for wire, rope, strand, cable, rod, tubes, flat material
| |
Re-use worn out pulleys by refurbishing running surfaces: Recondition Guide Pulleys. | Metal pulleys - made of aluminum hard anodized
- made of steel hardened, with tungsten carbide coating, hard chrome
coated
- made of copper, copper alloy
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| Characteristics | Unit | 95 Al2O3 | 99 Al2O3 | ZrO2 |
| Crystal Structure | - | hexagonal | hexagonal | tetragonal |
| Color | - | white | ivory | white |
| Density | g/cm3 | 3.65 | 3.88 | 5.95 |
| Water Absorption | % | 0 | 0 | 0 |
| Young's Modulus | Gpa | 280 | 350 | 205 |
| Vickers Hardness | Gpa | 14 | 20 | 12 |
| Flexural Strength | Mpa | 280 | 300 | 900 |
| Compressive Strength | Mpa | 2000 | 2500 | 2200 |
| Thermal Conductivity | W/(m·k) | 18-25 | 30 | 2.2 |
| Thermal shock resistance | Δ(℃) | 220 | 180-200 | 280-350 |
| Max. Working Temperature | ℃ | 1500 | 1700 | 850 |
| Volume Resistivity | Ω·cm | >10^15 | >10^14 | >10^12 |
| Dielectric Constant (1 MHz ) | - | 9.5 | 9.8 | 26 |
| Dielectric Strength | kV/mm | 16 | 22 | - |
Mingrui alumina tubes are 99.5% to 99.8% high purity and offer
elevated temperature stability. Alumina tubes are available in
custom sizes, including American and Metric, and offer a low
material cost.
Minerals containing alumina make up nearly 15% of the earth’s
crust. This makes it practically inexhaustible and versatile.
Alumina provides the combination of low thermal expansion, superior
thermal conductivity and high compressive strength making it
thermal shock resistant and the ideal product for alumina tubes.
Our alumina tube models have elevated dielectric properties and are
gas tight providing a higher vacuum or protective atmosphere when
at an extreme temperature.
These alumina tubes offer:
- Extreme high temperature stability under reducing, inert and high
vacuum condition under high temperature up to 1800°C.
- Extreme wear and abrasion resistance.
- Chemical corrosion resistance under high temperature.
- High dielectric properties.
- Gas tight for many applications to provide protective atmospheres
or high vacuum at high temperature to eliminate contamination or
impurity.
- Low material cost and custom size available.
- Available Tube Diameter From 3/16″ to 9″ for American size and 2 mm
to 150 mm.
- Available Tube Length: From 1″ ( 25mm) To 72″ ( 1828mm).
- Most items are in Stock and can be delivered in 1-3 days.
- Sentro Tech also offer volume discount for all listed sizes if
order quantity is more than 5 pieces for same size
1. What kind of industry ceramics do you have?
We specialized in 95% 97% 99% alumina ceramic and zirconia ceramic
parts.
2. What kind of molding method can you supply?
Dry Pressing, isostatic pressing, grouting, hot-chamber die
casting, tape casting, injection molding, etc, injection molding
and isostatic molding is the most commonly used.
3.What stabilizer do you use when processing?
Yttria stabilizer is the most commonly used in our industrial
ceramic parts.
4.Can you produce free samples for me?
Yes usually, we can produce free samples for you but it is up to
the product complexity .
5.What terms can you accept for payment?
T/T, L/C , Western union , Money Gram and Paypal is welcome , but
paypal and western union only for small-sum payment.
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Our factory Machinery show :
