Alumina Ceramic Friction Discs

Precision alumina ceramic friction discs for DTY false-twist texturing machines, featuring excellent wear resistance, stable yarn tension, smooth yarn guidance, and customizable dimensions and surface finishes.

Technical Specifications

Parameter	Typical Value / Range	Unit
Al₂O₃ Purity Content	95%-99.5%	-
Forming Methods	Dry pressing, ceramic injection molding (CIM), or hot pressing, depending on geometry and order quantity	-
Outer Diameter	1–50 mm,	mm
Surface Roughness	Fine finish: Ra ≤ 0.4 μm; mirror polishing available down to Ra 0.1 μm	μm
Surface Quality	Free from visible cracks, chips, and foreign-material contamination; mirror finish available	-
Precision Finishing	Precision grinding, lapping, and diamond polishing	-
Color	White or ivory	-
Operating Conditions	Suitable for high-speed, elevated-temperature, and high-humidity environments; resistant to many commonly used chemicals	-

Al₂O₃ Purity Content

Typical Value / Range: 95%-99.5%
Unit: -

Forming Methods

Typical Value / Range: Dry pressing, ceramic injection molding (CIM), or hot pressing, depending on geometry and order quantity
Unit: -

Outer Diameter

Typical Value / Range: 1–50 mm,
Unit: mm

Surface Roughness

Typical Value / Range: Fine finish: Ra ≤ 0.4 μm; mirror polishing available down to Ra 0.1 μm
Unit: μm

Surface Quality

Typical Value / Range: Free from visible cracks, chips, and foreign-material contamination; mirror finish available
Unit: -

Precision Finishing

Typical Value / Range: Precision grinding, lapping, and diamond polishing
Unit: -

Color

Typical Value / Range: White or ivory
Unit: -

Operating Conditions

Typical Value / Range: Suitable for high-speed, elevated-temperature, and high-humidity environments; resistant to many commonly used chemicals
Unit: -

Detailed Product Information

Alumina Ceramic Friction Discs for DTY Texturing Machines

TecCera supplies precision alumina ceramic friction discs designed for friction false-twist units used in draw texturing machines. Manufactured from high-purity alumina (Al₂O₃), these discs provide a hard, wear-resistant, and dimensionally stable yarn-contact surface for processing polyester, nylon, polypropylene, and other synthetic fibers.

The yarn-contact surface can be precision ground and diamond polished to achieve controlled surface roughness and smooth yarn guidance. Compared with conventional polyurethane and metal friction discs, alumina ceramic discs can provide longer service life, stable friction performance, and reduced contamination under demanding operating conditions.

Key Features

High hardness and excellent resistance to abrasive wear
Smooth, precision-polished yarn-contact surface
Low and stable yarn tension during high-speed operation
Reduced risk of yarn abrasion, lint generation, and surface contamination
Electrically insulating and non-magnetic ceramic material
Good dimensional stability at elevated temperatures
Resistant to corrosion and commonly used processing chemicals
Custom dimensions, profiles, and surface finishes available

Product Advantages

Compared with polyurethane friction discs

Higher resistance to wear and deformation
Better dimensional stability under frictional heat
Longer replacement intervals in suitable applications
More consistent surface condition throughout the service cycle

Compared with metal friction discs

Electrically insulating and non-magnetic
No metallic wear-particle contamination
Excellent resistance to corrosion and oxidation
Lower component wear when the surface finish and operating parameters are properly matched

The mirror-polished yarn-contact surface supports a smooth yarn path and stable friction conditions, helping improve yarn uniformity and reduce process variation. Longer replacement intervals can also reduce maintenance requirements and machine downtime.

Typical Applications

Friction false-twist units in DTY texturing machines
POY-to-DTY processing
Polyester, nylon, and polypropylene filament yarns
Covered, functional, and specialty yarn production
High-quality textile and industrial filament applications
Replacement components manufactured to customer drawings or samples

Compatibility with specific Barmag, Murata, SSM, Rieter, or other machine models should be confirmed according to the disc dimensions, mounting structure, yarn type, and operating conditions.

Typical Specifications

Parameter	Typical Option
Product	Alumina ceramic friction disc
Material	High-purity alumina (Al₂O₃)
Alumina Content	Customized according to application
Color	White / Ivory
Surface Finish	Precision ground or diamond polished
Dimensions	Customized to drawing or sample
Surface Roughness	Specified according to yarn and process requirements
Inspection	Visual and dimensional inspection
Application	DTY friction false-twist unit

Quality Control

Dimensional inspection based on customer drawings
Visual inspection of the yarn-contact surface
Surface roughness inspection when specified
Material inspection and batch traceability
Material test reports available upon request
Sample evaluation supported before volume production

Customization Available

TecCera can manufacture alumina ceramic friction discs according to customer drawings, samples, or equipment requirements. Customizable parameters include:

Outside and inside diameters
Thickness and edge profile
Mounting and positioning features
Surface roughness
Polishing grade
Alumina composition
Dimensional tolerances

Send us your drawing, sample, machine model, yarn type, and operating requirements for technical evaluation and quotation.