PP Bearings Manufacturers

Jiangsu Yinghong Transmission Technology Co., Ltd. is a professional PP Bearings manufacturer and OEM supplier under the YHU brand. We produce polypropylene (PP) plastic bearings for applications where corrosion resistance, low weight, electrical insulation and quiet operation are more important than high load capacity. The same factory that makes our precision steel and ceramic bearings also runs the PP bearing line, using automated equipment and the YHU quality system.

Our engineering team configures PP bearings for standard and non-standard assemblies. We define bore size, outer diameter, width, ball complement, sealing and internal clearance from the working point, not from a fixed catalog only. For procurement and technical teams that need a reliable China-based source, we support prototyping, serial production and drawing-based OEM projects.

PP Bearings: Material and Construction

Polypropylene is a low-density thermoplastic with good resistance to water, salt solutions, weak acids and many solvents. In bearing form, PP delivers a non-magnetic, electrically insulating raceway that runs quietly and survives washdown and high-humidity environments. We select homopolymer or copolymer PP grades according to the media, and we match the rolling element material to the application.

• Chemical resistance: stable in water, salts, detergents, fertilizers and weak acids.
• Low moisture absorption: good dimensional behavior in wet and humid conditions.
• Lightweight and insulating: useful for rotating assemblies where mass and electrical isolation matter.
• Quiet running: suited for equipment where noise is a product requirement.
• Moderate temperature range: PP is not intended for high-heat processes; review the actual thermal duty before selection.

Position in Our Plastic Bearing Range

PP is one of the material families in our plastic bearing program. As a PP Bearings supplier, we also manufacture POM, UPE, PEEK, PTFE, PVDF, PA66, PI and specially modified plastic bearings. The material decision depends on the chemical, thermal and mechanical requirements of the assembly. The table below shows where PP fits against other materials we process.

For higher radial loads and operating speeds, our Deep Groove Ball Bearings range includes bearing steel and stainless steel executions. The full program is listed under Products.

Application Fit

PP bearings are selected for equipment that must survive moisture, cleaning agents, fertilizer, saltwater splash and weak chemical media. Their low density also reduces rotating mass in lightweight and handheld equipment.

• Food processing and packaging: washdown-resistant rollers and conveyor-bearing positions.
• Agricultural equipment: sprayers, seeders and dosing mechanisms exposed to fertilizers and pesticides.
• Marine and outdoor products: deck hardware, ventilation fans and pumps in humid, salt-laden air.
• Textile machines: wet processes and finishing lines where steel bearings are vulnerable.
• Medical and laboratory instruments: non-magnetic, insulating and quiet rotating assemblies.
• Chemical handling: pumps, valves and metering devices requiring media resistance.

Configuration and Integration Options

We treat each PP bearing as an engineered component. The starting point is the service duty, not just the part number. We then define the bearing variant that fits the customer’s housing, shaft and assembly process.

• Construction types: open, shielded and sealed configurations for different contamination levels.
• Rolling elements: stainless steel, glass or ceramic balls matched to media and load.
• Dimensional variants: standard bore sizes, custom shaft diameters, flanged outer rings and non-standard widths.
• Clearance and fit: internal clearance selected for press fits, thermal expansion and shaft material.
• Lubrication: oil or grease compatibility with the surrounding media, or dry-running design with suitable ball and separator materials.

Engineering, Prototypes and Quality Assurance

Yinghong supports OEM and ODM projects from solution design and prototype production to mass delivery and after-sales technical support. When a customer sends a failed steel bearing, we analyze the failure mode and propose a PP-based design that addresses corrosion, electrical arcing or washdown damage.

PP bearings are produced under the same quality system as our precision steel and ceramic bearings. The factory is a National High-Tech Enterprise with IATF 16949, RoHS, CE and SGS certifications. Dimensional inspection, material traceability and running checks are part of the routine before products are packed for shipment.

Information We Use to Configure Your Solution

To prepare an accurate proposal, our engineering team needs the operating conditions around the bearing. Send us as much of the following as possible:

• Operating temperature and the exact media: chemical name, concentration and pH where relevant.
• Load magnitude and direction, plus operating speed in rpm.
• Shaft diameter, housing bore, widths, and mounting method.
• Existing drawing, part number or failed sample.
• Noise limit, vibration requirement, electrical insulation or non-magnetic requirement.
• Expected annual volume, packaging preference and destination port.

Frequently Asked Questions

What is the advantage of PP bearings over stainless steel bearings?

PP bearings are lighter, non-magnetic, electrically insulating and often more economical in mildly corrosive and washdown conditions. Stainless steel bearings provide higher load capacity and broader temperature range, so the correct choice depends on mechanical duty and environmental exposure.

Can PP bearings be used in food contact equipment?

Possibly, depending on the PP grade, additives, sealing components and the customer’s food contact standard. We review the application and propose a formulation that matches your regulatory and process requirements.

What rolling element materials work with PP rings?

Common choices are stainless steel balls for corrosion resistance, glass balls for non-magnetic and insulating assemblies, and ceramic balls for higher speed or lower inertia. We select the combination based on media, load and speed.

Are PP bearings self-lubricating?

PP is not inherently self-lubricating like PTFE or POM. For dry-running applications, we design the bearing with compatible ball, separator and internal geometry, and we sometimes use modified compounds. If lubrication is permitted, we specify a grease compatible with the process media.

Do you support custom bore sizes and non-standard dimensions?

Yes. As a manufacturer of non-standard bearings, we regularly produce PP bearings with custom bores, outer diameters, widths, flanges and mounting features. Submit the shaft and housing interface, and our engineering team will review the design.

How should I send a PP bearing requirement?

Provide the operating conditions, the existing part number or drawing, and the fastening method. We use that information to prepare a configuration recommendation, sample plan and quotation.

Related Products and Categories

Our portfolio also includes Bearing Steel Bearings for applications with different operating ranges, interfaces or integration requirements.