Especificaciones del Producto
Parámetro
Detalles
Número de modelo
| Double Row Cylindrical Roller Bearing |
Dimensión exterior
| Medium and Large(120-190mm) |
Material
Acero para rodamientos
Esférico
Rodamientos no alineables
Dirección de Carga
| Axial Bearing |
Separado
Separado
Liquidación
| C0 C2 C3 C4 C5 |
Jaula
| Brass, Steel |
Vibración
| Z1V1 Z2V2 Z3V3 |
| Hardness |
60-64 HRC |
Paquete de Transporte
Palé de Cartón
Especificación
| As Your Request |
Origen
| Jiangsu China |
Código HS
| 8482800000 |
Industrias de Aplicación
Industria
Equipo Típico
Maquinaria Industrial
https://bearingnsk.com/wp-content/uploads/2026/07/chinese-bearing-manufacturers-implement-iso-9001-iatf-16949-1.jpgHerramientas de Máquina, Cajas de Cambios, Reductores, Máquinas de Impresiónhttps://bearingnsk.com/wp-content/uploads/2026/07/chinese-spherical-roller-bearings-installed-in-wind-turbine-2.jpg
Automotriz
| Transmission Systems, Drive Axles |
Maquinaria Agrícola
Tractores, Cosechadoras
Nueva Energía
Aerogeneradores, Equipos Solares
Reduce Downtime with Reliable Double Row Cylindrical Roller Bearings NNU4938 NNU4940 for Industrial Machinery
Industrial machinery operators know the frustration of unexpected downtime caused by bearing failures. When a critical bearing like the double row cylindrical roller bearing fails prematurely, production lines stop, maintenance costs rise, and deadlines are missed. Sourcing high-quality bearings with the right specifications can be challenging, especially when balancing price, delivery time, and performance.
High-Quality Double Row Cylindrical Roller Bearings for Industrial Machinery
Our Double Row Cylindrical Roller Bearing NNU4938 and NNU4940 with Brass Cage are designed to address these challenges. As a professional bearing manufacturer with over 15 years of experience, we ensure these bearings meet strict quality standards. The separated design allows for easy installation and maintenance, while the brass cage provides excellent durability and heat resistance, making them ideal for industrial machinery applications such as gearboxes and printing machines.
Rendimiento Óptimo en Condiciones Industriales Exigentes
These double row cylindrical roller bearings excel in high-load, high-speed industrial environments. With a hardness of 60-64 HRC, they offer superior wear resistance, ensuring long service life even under heavy operating conditions. The non-aligning design provides stability in applications where shaft misalignment is minimal, while the axial load capacity makes them suitable for machinery requiring precision and reliability, such as CNC machines and reducers.
Características Técnicas Clave para Mejorar el Rendimiento de la Maquinaria
The technical specifications of these bearings directly impact industrial machinery performance. The clearance options (C0, C2, C3, C4, C5) allow customization based on operating conditions – tighter clearances for precision applications and larger clearances for high-temperature environments. The vibration grades (Z1V1, Z2V2, Z3V3) ensure smooth operation, reducing noise and improving overall machinery efficiency. The brass cage material enhances heat dissipation, critical for maintaining performance in continuous operation scenarios.
Long-Term Value of Choosing Quality Bearings
Investing in high-quality double row cylindrical roller bearings reduces the total cost of ownership. Inferior bearings may have lower upfront costs but often fail prematurely, leading to unplanned downtime, increased maintenance expenses, and potential damage to other machinery components. Our bearings meet ISO international industrial standards, ensuring consistent performance and reliability. With a focus on using premium bearing steel and advanced manufacturing processes, we deliver bearings that outlast and outperform cheaper alternatives.
Por qué los compradores industriales eligen los rodamientos Saifan
Our commitment to quality and customer service sets us apart. We hold ISO 9001:2015 and ISO 14001 certifications, ensuring strict quality control from raw material inspection to finished product testing. Our professional technical team provides free guidance on bearing selection, installation, and maintenance, helping you optimize bearing performance. With flexible order policies, including a 1-piece MOQ for standard bearings and sample orders without MOQ, we cater to both small and large-scale industrial needs. We serve customers in Europe, North America, Southeast Asia, and the Middle East, offering efficient delivery with sample orders shipped in 3-5 working days and bulk orders in 5-15 working days.
Packaging & Shipping
Embalaje en palets de cartón para un transporte seguro
3-5 días hábiles para pedidos de muestra, 5-15 días hábiles para pedidos al por mayor
Múltiples opciones logísticas, incluidos servicios de mensajería internacional y carga
Seguimiento logístico en tiempo real proporcionado para todos los envíos
1 pieza MOQ para rodamientos estándar, cantidad de pedido personalizada negociable
Consigue tus rodamientos de maquinaria industrial hoy
Don’t let bearing issues disrupt your production. Whether you need NNU4938 or NNU4940 double row cylindrical roller bearings, we have the expertise and inventory to meet your requirements. Send us your bearing specifications, application details, and quantity, and our team will provide a prompt quote to help you get back to smooth operation.
Preguntas Frecuentes
Q: Are these bearings genuine and of high quality?
A: Yes, we are a professional bearing manufacturer with strict quality control processes. All products meet ISO international industrial standards and are certified with ISO 9001:2015 Quality Management System.
Q: How can I confirm if the NNU4938/NNU4940 bearing is suitable for my equipment?
A: Our professional technical team can assist with bearing selection. Provide your equipment model, operating conditions (load, speed, temperature), and we will recommend the appropriate bearing specifications.
Q: ¿Cuál es la política de garantía para estos rodamientos?
A: We offer an official 12-month warranty valid from the date customers receive goods. Qualified defective products can be replaced free of charge or refunded.
Q: What is the minimum order quantity for NNU4938 and NNU4940 bearings?
A: We have a flexible order rule with a 1 piece MOQ for standard bearings. Sample orders are available without MOQ, and customized order quantities are negotiable.
Q: ¿Cuánto tiempo tarda en enviar los rodamientos?
A: Sample orders are shipped within 3-5 working days, and bulk orders take 5-15 working days. We offer multiple shipping methods to meet your delivery requirements.
Q: ¿Cómo puedo asegurarme de que los rodamientos que recibo no son falsificados?
A: We provide complete product traceability and quality documentation. Our bearings are manufactured in our own factory with strict quality control, and we can provide certification of compliance with international standards upon request.
Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.
