Inside the shredding rooms of plastics recycling plants, crushers use shear forces to reduce waste plastic bottles, drums and films into uniform fragments. Washing equipment removes oil, labels and contaminants from plastic fragments in high-alkalinity and high-temperature water, with bearings maintaining corrosion-resistant operation under alternating chemical detergents and hot water. Dryers rapidly dry washed plastic fragments under hot air and centrifugal force, with bearings maintaining stability under high temperature and high-speed rotation. Extruder pelletizers melt, filter, extrude and pelletize dried plastic fragments into reusable plastic pellets. Plastic recycling and regeneration equipment——the critical link of the circular economy——depends on the precision support of bearings under wear, impact, corrosion and high temperature for every shredding, washing, drying and pelletizing action.

 

The operating conditions of plastic recycling and regeneration equipment bearings are extremely demanding and complex. Abrasive wear——sand, glass fragments and metal particles mixed with plastic fragments continuously attack bearing seals and rolling elements； impact loads——crushers endure impact forces when processing rigid plastics and contaminated materials； chemical corrosion——alkaline detergents (NaOH), acid neutralizers and hot water in washing equipment continuously chemically attack bearing materials； high-temperature environments——dryer and extruder operating temperatures typically range from 100°C to 300°C, requiring bearings to maintain dimensional stability and effective lubrication at sustained high temperatures； high humidity——alternating washing and drying processes subject bearings to complex high-humidity and temperature variation environments. When recycling equipment bearings develop wear, corrosion or binding, equipment stops, output decreases, regenerated pellet quality declines——directly affecting recycling facility economics and circular utilization efficiency.

 

Japan NMT plastic recycling and regeneration equipment bearings are specialized product series developed specifically for the plastics recycling industry's stringent requirements for wear resistance, impact resistance, corrosion resistance and long life. NMT plastic recycling and regeneration equipment bearings feature systematic specialized optimization in wear-resistant materials, impact-resistant design, corrosion-resistant design and high-temperature seal protection——ensuring long-term stable and reliable operation under shredding, washing, drying and pelletizing conditions.

 

NMT plastic recycling and regeneration equipment bearings precisely address the core positions of various recycling equipment. Plastic crusher knife drum and bearing housing bearings utilize heavy-duty spherical roller bearings or cylindrical roller bearings, withstanding sustained radial loads and alternating stress under high-speed rotation and impact loads, with sealing systems effectively blocking plastic fragments, sand and dust ingress, maintaining stable high-speed knife drum rotation and uniform crushing effectiveness. Plastic crusher feed roll and compaction device bearings utilize impact-resistant roller bearings or mounted bearings, withstanding impact loads and alternating stress under forced feeding and compaction, maintaining uniform feeding and stable compaction, ensuring crushing efficiency and uniform knife drum loading.

 

Plastic washing equipment friction washing tank and high-speed friction wheel bearings utilize corrosion-resistant stainless steel bearings or hybrid ceramic bearings, maintaining corrosion and wear resistance under high-alkalinity detergents (pH 10-14), high-temperature water (60°C-90°C) and plastic fragment abrasive environments, withstanding high-speed friction wheel rotation and continuous washing tank vibration, ensuring effective label and contaminant separation. Plastic washing equipment rinsing tank and conveyor screw bearings utilize corrosion-resistant stainless steel bearings or mounted bearings, maintaining corrosion resistance and dimensional stability under alternating fresh water rinsing and chemical neutralization, withstanding continuous conveyor screw rotation and material gravity loads, ensuring rinsing effectiveness and smooth material conveying.

 

Plastic dryer hot-air drying and centrifugal dewatering bearings utilize high-temperature stainless steel bearings or ceramic bearings, maintaining oxidation resistance and dimensional stability under hot air temperatures of 100°C-200°C and high-speed centrifugal rotation, withstanding high-speed dryer drum rotation and continuous hot-air circulation, ensuring drying efficiency and consistent material moisture content. Plastic dryer heating system and fan bearings utilize high-temperature precision bearings, maintaining low friction and long life under sustained high temperature and hot-air circulation, withstanding heating system thermal radiation and high-speed fan operation, ensuring uniform drying temperature and stable hot-air circulation.

 

Plastic extruder pelletizer screw and reducer bearings utilize high-capacity cylindrical roller bearings or thrust roller bearings, withstanding axial thrust and radial loads during plastic melt extrusion, maintaining stable screw rotation and constant extrusion pressure, ensuring continuous stable melt filtration, extrusion and pelletizing. Plastic extruder pelletizer cutting device and cooling water tank bearings utilize corrosion-resistant stainless steel bearings or mounted bearings, maintaining corrosion resistance and high precision under high-speed pelletizer cutter disc rotation and cooling water tank moisture environments, withstanding continuous cutter disc rotation and pelletizing impacts, ensuring uniform pellet size and regular shape.

 

Plastic recycling line conveyor belt and metal separator bearings utilize mounted wear-resistant bearings or deep groove ball bearings, withstanding abrasive wear and impact during continuous material conveying and metal separation, maintaining stable conveyor belt operation and precise metal separator action, ensuring recycling process continuity and material purity. Plastic recycling line air sorter and density separator bearings utilize wear-resistant corrosion-resistant bearings, maintaining wear and corrosion resistance under high-speed rotation and abrasive environments of air and density separation, withstanding high-speed sorter rotor rotation and continuous material impact, ensuring effective density-based plastic separation and recycling purity.

 

NMT plastic recycling and regeneration equipment bearings utilize corrosion-resistant stainless steel (304, 316L grade), high-purity bearing steel or hybrid ceramic materials, with customized material selection based on corrosivity, temperature and abrasive characteristics of different recycling processes. In alkaline washing and high-temperature water environments, 316L stainless steel or ceramic materials provide superior pitting and chemical corrosion resistance； in crushing and pelletizing heavy-load impact environments, high-purity bearing steel or case-hardening steel provide excellent impact toughness and fatigue resistance； in drying and extrusion high-temperature environments, heat-resistant stainless steel or ceramic materials maintain dimensional stability and oxidation resistance. Rolling elements undergo precision grouping screening, raceways undergo superfinishing to maintain low-friction operation in corrosive and abrasive media. Rolling elements undergo precision crowning modification to eliminate raceway edge stress concentration and distribute impact loads uniformly across the full roller length, effectively resisting edge spalling from impacts. Bearing clearance is precisely set with thermal compensation optimization for the wide temperature range and thermal expansion characteristics of recycling equipment, maintaining proper internal gaps between cold start and thermal steady-state operation.

 

Heavy-duty sealing systems are critical for recycling equipment bearings to survive in abrasive and chemical media environments. NMT plastic recycling and regeneration equipment bearings employ heavy-duty multi-layer sealing structures——a combination of labyrinth seals and contact-type rubber seals, with chemical-resistant seal materials (FKM or FFKM), maintaining reliable sealing performance under the mixed attack of plastic fragments, sand, alkaline detergents and hot water, effectively blocking abrasives, chemical media and moisture ingress. Seal structures undergo low-friction optimization to maintain sealing effectiveness while minimizing rotational resistance.

 

Bearings are pre-filled with specialized recycling equipment grease featuring excellent water washout resistance, chemical media resistance and high-temperature stability, maintaining stable lubrication in alkaline detergent immersion, high-temperature water washdown and continuous impact environments without emulsification, bleed-out or carbonization.

 

Reasons for selecting NMT plastic recycling and regeneration equipment bearings：

 

Corrosion-resistant stainless steel (304/316L) or ceramic materials resist alkaline detergents, acidic and high-temperature water corrosion

 

High-purity bearing steel or case-hardening steel resists impact and fatigue for crushing and pelletizing heavy-load conditions

 

Special toughening heat treatment for high surface hardness + excellent core toughness, resisting impact and brittle fracture

 

Precision-crowned rolling elements eliminate edge stress concentration for uniform impact load distribution

 

Heavy-duty multi-layer labyrinth + rubber seals (FKM/FFKM) effectively block sand, plastic fragments, detergents and moisture ingress

 

High-temperature stainless steel or ceramic materials maintain dimensional stability in drying and extrusion high-temperature environments

 

Specialized recycling grease with water washout resistance, chemical resistance, high-temperature stability, no emulsification or carbonization

 

Precision thermal-compensated bearing clearance for proper gaps across wide temperature ranges

 

Passed rigorous abrasive wear, chemical corrosion and impact durability testing for crushers, washing equipment, dryers and extruder pelletizers

 

These performance advantages establish NMT plastic recycling and regeneration equipment bearings as the reliable precision components for plastic crushers, washing equipment, dryers, extruder pelletizers and various plastic recycling/regeneration production lines.

 

Application scenarios

 

Plastic crusher knife drum and bearing housing bearings

 

Plastic crusher feed roll and compaction device bearings

 

Plastic washing equipment friction washing tank and high-speed friction wheel bearings

 

Plastic washing equipment rinsing tank and conveyor screw bearings

 

Plastic dryer hot-air drying and centrifugal dewatering bearings

 

Plastic dryer heating system and fan bearings

 

Plastic extruder pelletizer screw and reducer bearings

 

Plastic extruder pelletizer cutting device and cooling water tank bearings

 

Plastic recycling line conveyor belt and metal separator bearings

 

Plastic recycling line air sorter and density separator bearings

 

Precision manufacturing

 

Produced according to plastic recycling industry standards and corrosion-resistant heavy-duty bearing manufacturing specifications, NMT plastic recycling and regeneration equipment bearings utilize corrosion-resistant stainless steel (304/316L), high-purity bearing steel or hybrid ceramic materials, processed through vacuum degassing treatment, special heat treatment, raceway superfinishing, precision rolling element crowning modification and high-precision grouping screening, heavy-duty multi-layer seal precision assembly, specialized grease precision filling, rotational accuracy inspection, abrasive wear testing, chemical immersion testing, high-temperature durability validation and impact durability testing——ensuring every product delivers wear resistance, impact resistance, corrosion resistance and long service life.

 

Product range

 

Crusher heavy-duty spherical roller bearings

 

Crusher impact-resistant mounted bearings

 

Washing equipment corrosion-resistant stainless steel bearings

 

Washing equipment hybrid ceramic bearings

 

Dryer high-temperature stainless steel bearings

 

Pelletizer high-capacity cylindrical roller bearings

 

Pelletizer corrosion-resistant cutting bearings

 

Custom non-standard plastic recycling and regeneration equipment bearings

 

Global industrial service

 

Japan NMT supplies high-quality plastic recycling and regeneration equipment bearings to global plastics recycling equipment manufacturers, material producers and circular economy industrial parks, empowering global plastics circular utilization and green sustainable development with wear-resistant impact-resistant long-life precision engineering and long-term stable recycling/regeneration transmission performance.