Bearing-Grade PPS Sheets & Rods | High PV Resistance
We supply Bearing-Grade & High-Load PPS Sheets and Rods engineered for unlubricated, high-PV wear components. Featuring an HDT exceeding 260°C, continuous thermal service at 200°C, ultra-low ionic impurities (semiconductor CMP safe), and exceptional fatigue/creep resistance, this modified PPS stock shape outperforms metals in heavy-load sliding. Ideal for semiconductor CMP retaining rings, textile guide rollers, automotive pump impellers, and industrial gears. Share your dimensions for a quick quote.
Product information
Published information supports preliminary product selection. Confirm the exact grade, dimensions, tolerances, documentation and application suitability with the quotation for your order.
Description
Bearing-Grade & High-Load PPS Stock Shapes (Sheets & Rods) represent the premier engineering solution for components subjected to high PV (pressure-velocity) factors, heavy friction, and aggressive chemical exposure. Formulated with internal lubricants and reinforced fillers, this modified Polyphenylene Sulfide delivers superior dimensional stability and a low friction coefficient without external lubrication.
With a continuous operating limit of 200°C (short-term up to 260°C) and a Heat Deflection Temperature (HDT) above 260°C, this material resists thermal deformation under severe cyclic loading. Its ultra-low ionic impurity profile makes it certified for semiconductor CMP (Chemical Mechanical Planarization) retaining rings, while its immunity to strong acids, alkalis, and automotive fluids ensures zero maintenance in chemical pump impellers, textile guide rollers, and heavy-duty industrial gears.
Property & Performance Datasheet Summary
| Property / Parameter | Technical Value / Standard | Engineering Advantage |
| Material Class & Color | Bearing-Grade Modified PPS / Black & Dark Brown | Internal Lubrication / High PV Resistance |
| Stock Dimensions | Sheets: 10–50mm Thickness / Rods: ∅6-200mm | Stress-Relieved / Warpage-Free CNC Milling |
| Thermal Limits | Continuous: 200°C / Peak: 260°C / HDT: >260°C | High Heat Stability under Heavy Stress |
| Semiconductor Cleanliness | Ultra-Low Ionic Impurities | CMP Retaining Ring & Wafer Safe |
| Tribological Performance | High PV Limit & High Fatigue Strength | Long Lifespan in Dry/Lubricated Sliding |
| Chemical & Flame Rating | Inherent UL94 V-0 / Acid & Alkali Resistant | Replaces Metals in Corrosive Fluids |
How this product is normally specified
This product is supplied as extruded PPS plates (10–50mm) and round rods (∅6-200mm) for CNC machining:
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Stock Form & Size: Sheet thickness (10–50mm) or rod diameter (∅6-200mm)
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Grade Target: Bearing-grade wear resistant, semiconductor low-ionic CMP grade, or high-load structural grade
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Stress Relief: Annealed stock shape for warpage-free CNC milling and turning
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Supply State: Full master plates/rods or pre-cut custom CNC blanks
Where this material can fit
Typical applications for bearing-grade PPS stock shapes include:
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Semiconductor Processing: CMP (Chemical Mechanical Planarization) retaining rings, wafer polishing fixtures, and chemical pump parts
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Textile & Paper Machinery: High-speed guide rollers, thread guides, bearings, and heat-resistant bushings
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Automotive & Fluid Handling: Electronic water pump impellers, coolant valves, gearbox bushings, and exhaust recirculation parts
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Industrial Heavy Machinery: Precision high-load gears, slide rails, robotic arm joints, and chemical pump linings
What to confirm before ordering
To recommend the right bearing-grade PPS specification, please confirm:
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Target stock form (sheet thickness vs. rod diameter) and dimensions
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PV operating conditions (pressure, sliding velocity, temperature, dry/lubricated)
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Target application (semiconductor CMP ring, textile roller, pump impeller, gear)
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Trial quantity and estimated annual commercial demand
Send us the information you have. We will review technical details before confirming the quotation.
Material overview
Understanding PPS (Polyphenylene Sulfide)
Why engineers use it
- Broad chemical resistance for many industrial fluids and process environments.
- Low moisture uptake and good dimensional stability.
- Useful electrical insulation and inherent flame-resistance characteristics.
- Reinforced grades can provide high stiffness and repeatable molded dimensions.
- Often offers a practical cost/performance position below PEEK.
Limits to consider
- Unfilled PPS can be relatively brittle and design details strongly affect impact performance.
- Glass or mineral reinforcement changes shrinkage, anisotropy and machining behavior.
- Oxidizing media and actual high-temperature chemicals still require compatibility review.
- Weld lines, sharp corners and molding orientation can become structural weak points.
- It should not be selected from chemical-resistance charts alone.
Grades and product forms
PPS is commonly supplied unfilled or reinforced with glass fiber, mineral filler, carbon fiber or combined systems. The filler package changes stiffness, movement, surface finish, conductivity and wear. Pellets suit volume molding, while sheet, rod or finished parts may be preferable for prototypes and lower-volume production.
Performance points to review
| Evaluation area | Why it matters | Information to provide |
|---|---|---|
| Temperature behavior | Useful performance under elevated or changing temperature | Continuous and peak temperature, cycle length and time at load |
| Mechanical response | Strength and stiffness must match the real part geometry | Load direction, stress level, impact and fatigue expectations |
| Environmental resistance | Fluids, cleaning agents and atmosphere can change service life | Chemical name, concentration, temperature and exposure time |
| Dimensional control | Tight-tolerance parts depend on both material and processing | Finished dimensions, tolerances and assembly conditions |
| Electrical or insulation needs | Electrical requirements may influence grade and thickness | Voltage, dielectric, conductivity or insulation target |
These are engineering discussion points, not guaranteed property values. Final acceptance criteria should be agreed for the selected grade, process and order.
Typical application directions
These examples show where the material may be evaluated. They do not replace a suitability review for the finished component.
Fabrication and processing preparation
Share the finished part drawing as well as the requested rod diameter and length. This makes it possible to discuss machining allowance, tolerance, cut length, quantity and whether a closer starting size could reduce waste.
Where the application is critical, define what a successful trial looks like before material is ordered: dimensions after processing, visual condition, mechanical response, assembly fit or another measurable result.
When another material may be better
PEEK may be preferred when toughness or a broader high-temperature performance margin is required. PPS can be the more practical solution when chemical resistance, stiffness, repeatable molding and cost control are the central requirements.
We recommend sharing the current material and the reason it is being reconsidered. Cost, processability, supply form and inspection burden belong in the decision alongside technical performance.
Information needed for an accurate quotation
A useful RFQ reduces follow-up questions and helps us distinguish between a material request and a finished-part requirement.
| Product form | Raw material, stock shape, semi-finished blank or completed part |
|---|---|
| Dimensions | Nominal size, finished size and tolerances |
| Quantity | Trial quantity, first order and estimated annual demand |
| Application | Part function and current material, if any |
| Operating temperature | Continuous range, peak temperature and cycle duration |
| Environment | Chemicals, gases, moisture, pressure, vacuum or outdoor exposure |
| Mechanical duty | Load, speed, impact, wear and mating components |
| Documentation | Drawing revision, inspection, traceability or compliance needs |
Frequently asked questions
Can I request a sample or trial quantity?
Trial quantities can be discussed according to product form and availability. Tell us what you need to prove during the trial, the intended process and the expected production quantity if the test succeeds.
Do you provide a data sheet or material documentation?
Available documentation depends on the selected material and supply route. List the documents required by engineering, purchasing or quality when you inquire so they can be checked before quotation.
Can the grade be selected from a product name alone?
No. Similar product names can cover different grades, colors, fillers and processes. Selection should be based on the finished application, environment and required property balance.
Can you supply custom dimensions or finished parts?
Custom sizes, blanks or finished parts can be reviewed where appropriate. A drawing with tolerances, quantity and material requirement is the best basis for quotation.
How should we evaluate an alternative to our current material?
Share the current grade, the part’s service conditions and the reason for changing it. A useful comparison looks at failure mode, processing, life, inspection and total project cost—not only a single property value.
What determines lead time?
Lead time depends on product form, grade, size, quantity, documentation, machining and current availability. Confirm the required delivery date and destination with the RFQ rather than assuming a standard schedule.
Send the drawing, application and quantity. We will use the project details to prepare a practical material and supply discussion.
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