PA66 Bearings Manufacturers

As a PA66 Bearings manufacturer, Jiangsu Yinghong Transmission Technology Co., Ltd. produces nylon bearings under the registered brand YHU for sliding positions where a dry-running, oil-resistant, shock-damping part outperforms steel. The company was formed through the joint investment of Dongguan Yinghong, Linqing Boshuo and Yancheng Jiwei, and now runs a 15,000 m² factory in Funing County, Yancheng, with more than 300 sets of production equipment and over 200 employees.

PA66 sits inside a wider plastic bearing family we manufacture — POM, PP, UPE, PEEK, PTFE, PVDF, PI and specially modified grades — so a project can be steered to the polymer that actually matches its load, temperature and chemical exposure instead of forcing nylon into every position. Our core output remains high-precision deep groove ball bearings and custom non-standard bearings, and PA66 components are produced on the same automated lines and high-precision inspection equipment.

Our PA66 Bearing Range

PA66 bearings are produced to the customer's drawing or sample, from prototype quantities through to repeat series delivery. The polymer brings toughness, impact damping and resistance to oils, greases and many hydrocarbons, which makes it a first choice for unlubricated mechanisms that are also mechanically punished.

• Plain sleeve and bush geometries for rotary or linear sliding contact in housings, linkages and hinges.
• Flanged parts where axial location must come from the component itself; our Flanged Bearings technology is applied to the same locating principle in metal designs.
• Shaped, stepped, grooved and insert-moulded non-standard parts developed from a sample, sketch or 3D model.
• PA66 retainers and cage components inside rolling assemblies, plus hybrid arrangements where sliding wear would otherwise limit life.

Where a position is governed by rolling contact rather than sliding contact, we compare the duty against our Deep Groove Ball Bearings so the assembly is not committed to the wrong wear mechanism.

Selecting Between PA66 and the Other Plastics We Produce

Reinforced PA66 raises stiffness and creep resistance under sustained load, at the cost of impact toughness and greater wear on the mating surface. Unfilled PA66 stays quieter and absorbs shock better. The choice is settled together with the geometry, not before it.

Where PA66 Bearings Fit Best

PA66 bearings are frequently specified in positions that run without external lubrication and see a mix of radial load, edge loading and vibration: office machines and printers, power tools, household appliances, automotive interior and body mechanisms, textile and packaging machinery, conveyor rollers, pump and valve components exposed to oils and fuels, electrical and insulating parts, and fitness equipment.

Load, Speed and Thermal Behaviour

Plastic bearings are limited by the heat generated at the sliding interface rather than by a hardness ceiling. The usable combination of contact pressure and surface speed falls as the duty cycle becomes continuous, because PA66 has a low thermal conductivity and relies on the shaft and housing to draw heat away.

• Intermittent movements tolerate far higher contact pressure than continuous rotation.
• Unreinforced PA66 is generally applied where continuous service temperature stays moderate; short excursions above that are handled case by case.
• Sustained static load needs a creep check, since nylon deforms slowly under permanent stress.
• Thin walls cool faster but deflect more, so wall thickness is balanced against heat and stiffness together.

Moisture, Clearance and Mating Surfaces

PA66 takes up moisture from ambient air, and the resulting dimensional change is the single most common cause of a nylon bearing seizing or running loose. Bore and outside diameter tolerances are therefore set around the moisture condition the part will reach in service, with running clearance agreed before the drawing is released.

• Mating shafts should be hard, smooth and corrosion-resistant — ground or polished steel avoids the abrasion that a rough surface causes.
• Housing and shaft fits are confirmed together with the mounting method, because press fits squeeze the bore.
• Alignment matters more than in metal: misalignment concentrates load on a narrow contact band.

Configuration and Custom Development

We build PA66 parts against drawings, samples or 3D data, and the same engineering team that configures the part follows it through tooling, prototype production and series manufacturing. Structure, wall thickness, material grade and running clearance can be optimized for a specific mechanism rather than accepted from a catalogue.

• Solution design and bearing custom development from the application description.
• Design and optimization of structure, material and performance parameters.
• Prototype production for fit and function checks before series tooling.
• Failure analysis and technical support when an existing position is wearing out early.
• Series delivery on automated production lines once the design is frozen.

Quality Control and Acceptance

Yinghong operates a closed-loop quality management system covering raw material intake, production processes and finished goods release, supported by IATF 16949, RoHS, CE and SGS certification and a portfolio of invention and utility model patents.

• High-precision inspection and testing equipment verifies precision, noise, vibration, sealing, wear resistance and corrosion resistance.
• Incoming material is checked against the agreed grade before production starts.
• Functional checks on the finished part confirm fit, running clearance and surface condition.
• SGS test reports are available for the materials and product families covered by our certification scope.
• Inspection items and the documentation package for each order are fixed at order confirmation, so receiving inspection and internal quality files match what actually arrives.

Information We Use to Configure Your Solution

A workable configuration and quotation come from the working point, the mating parts and the production target. These are the inputs we ask for.

Installation, Maintenance and Serviceability

PA66 bearings are normally fitted without external lubrication, which removes grease lines, seals and relubrication routines from the assembly. Installation quality still decides service life.

• Press the part squarely with a flat-faced tool acting on the loaded face, not through the bore.
• Avoid over-constraining a shaft in two plastic bearings without an allowance for alignment and thermal movement.
• Inspect periodically for wear steps, ovality and discoloration, which indicates heat rather than load.
• Replace a worn part with the same grade and revision, since a different polymer changes the clearance.
• Repeat orders are produced to the frozen drawing revision so replacement parts match the original fit.

Delivery Scope and Documentation

Orders are confirmed with the drawing revision, material grade, quantity, packaging and documentation scope recorded together, so the delivered part and its paperwork stay tied to one configuration. Bulk packaging, individual bagging or customer-specific labelling are agreed before tooling and production are released.

Frequently Asked Questions

What is a PA66 bearing used for?

It is a nylon bearing used where a mechanism runs dry or in contact with oils, greases and hydrocarbons, and where shock and vibration must be damped instead of transmitted. Office machines, appliances, power tools, automotive mechanisms, textile and packaging equipment and conveyor rollers are typical applications.

Can you produce PA66 bearings to our drawing in prototype quantities?

Yes. Custom development starts from a drawing, sample or 3D model, moves through prototype production for fit and function checks, and continues into series delivery on the same controlled process.

How does moisture absorption affect PA66 bearing fit?

PA66 picks up moisture from the surrounding air and changes dimension as a result. We set bore and outside diameter tolerances around the moisture condition the part will reach in service, and agree running clearance with your shaft and housing fits before the drawing is released.

Do PA66 bearings need lubrication?

They are self-lubricating and normally run without grease or oil, which suits clean and maintenance-free assemblies. Where a position combines high load with continuous motion, we assess whether the heat generated at the sliding interface still allows dry running or whether another polymer or a rolling solution serves the assembly better.

Which certifications support your PA66 bearing production?

Yinghong holds IATF 16949, RoHS, CE and SGS certification, together with invention and utility model patents. Tests on precision, noise, vibration, sealing, wear resistance and corrosion resistance are carried out with high-precision inspection equipment inside our closed-loop quality system.