Needle Roller Bearings

Needle Roller Bearing NK45/20 45x55x20mm Radial Bearing P0-P4 Precision for Industrial Machinery

SKU: 449923f45778 In Stock

Ensure smooth, precise rotation in your industrial machinery with the NK45/20 Needle Roller Bearing, engineered to deliver reliable performance even under heavy radial loads. This 45x55x20mm radial bearing’s P0-P4 precision rating minimizes vibration and extends equipment lifespan, addressing the critical need for consistent operation in manufacturing environments.

  • Without outer/inner rings design reduces weight while maintaining structural integrity, ideal for compact machinery setups
  • Grease or oil lubrication flexibility adapts to diverse operating conditions, ensuring low maintenance and long service life
  • Backed by Saifan’s strict ISO 9001 quality control and 12-month warranty, providing peace of mind for your production line
Wholesale Price (FOB)
¥1.30
MOQ: 1 Piece • Bulk discounts available on inquiry
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12-Month Warranty
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Product Specifications

Technical Details & Description

Especificaciones del Producto

Parámetro

Detalles

Modelo NO.

Nombre del Producto

Rodamiento de agujas

Dirección de Carga

Rodamiento Radial

Estilo

Sin anillo exterior, sin anillo interior

Material

Acero para rodamientos

Tipo

Cerrado

Lubricación

Grasa o Aceite

Clasificación de Precisión

P0, P6, P5, P4, P2

Liquidación

C0, C3, C4

Especificación

Código HS

8482102000

NK45/20
45×55×20 mm

Industrias de Aplicación

Industria

Equipo Típico

Maquinaria Industrial

Automotriz

Maquinaria Agrícola

Tractores, Cosechadoras

Nueva Energía

Generadores de Energía Eólica, Sistemas de Seguimiento Solar

Machine Tools, Gearboxes, Reducers, Printing Equipment
Transmission Systems, Auxiliary Components

Reduce Downtime with Precision NK45/20 Needle Roller Bearings for Industrial Machinery

Industrial machinery operators know the cost of unexpected downtime—hours lost to bearing failures, production delays, and emergency repairs. Many face challenges with generic bearings that fail prematurely under heavy loads or fail to meet precision requirements, leading to increased maintenance cycles and operational costs.

Diseñado para un Rendimiento Confiable en Aplicaciones Críticas

The NK45/20 Needle Roller Bearing addresses these pain points with its robust design and high-precision manufacturing. As a radial bearing with dimensions 45×55×20mm, it is optimized for industrial machinery where space is limited but performance cannot be compromised. Our production capabilities ensure consistent quality, with precision grades from P0 to P4 and noise grades up to Z4, meeting the demands of high-speed and heavy-load applications.

Rendimiento Óptimo en Entornos Industriales Exigentes

This needle roller bearing excels in applications requiring high radial load capacity and rigidity, such as machine tool spindles, gearboxes, and printing machinery. Its closed type design and bearing steel construction provide durability, while options for grease or oil lubrication allow adaptability to different operating conditions. Whether in continuous production lines or intermittent heavy-duty cycles, the NK45/20 delivers stable performance to keep your machinery running efficiently.

Características técnicas clave que impulsan el rendimiento

Precision rating is critical for minimizing vibration and ensuring smooth operation—our P0 to P4 grades meet strict dimensional tolerances, reducing noise and extending service life. Clearance options (C0, C3, C4) allow customization for thermal expansion and preload requirements, ensuring optimal fit in various assemblies. The bearing’s compact size (45×55×20mm) makes it ideal for space-constrained industrial equipment, while its closed design protects internal components from contamination, reducing maintenance needs.

Why Genuine Quality Matters for Total Cost of Ownership

Choosing genuine bearings over counterfeit alternatives directly impacts your bottom line. Counterfeit bearings often fail prematurely, leading to unplanned downtime, costly repairs, and potential damage to关联设备. Our NK45/20 bearings adhere to ISO, ABMA, and DIN international standards, ensuring reliability and compliance with industrial regulations. With a 12-month warranty and strict quality control processes—including incoming material inspections and full-process production supervision—we stand behind every product, reducing the risk of unexpected failures and lowering long-term operational costs.

Su Socio de Confianza para Soluciones de Rodamientos

With over 18 years of manufacturing and export experience, Jinan Saifan Bearing Co., Ltd combines technical expertise with customer-focused service. Our one-stop capabilities include independent R&D, mass production, and global sales, supported by a professional technical team offering free guidance on selection, installation, and maintenance. We hold ISO 9001:2015 and ISO 14001 certifications, and our flexible order policies (1 piece MOQ for standard bearings, 3-5 day sample delivery) ensure you get the bearings you need when you need them. As a high-tech enterprise, we prioritize innovation and quality, making us a reliable partner for industrial clients worldwide.

Packaging & Shipping

  • Secure packaging with carton and pallet to prevent damage during transit

    • Los pedidos de muestra se envían dentro de 3-5 días hábiles; los pedidos al por mayor dentro de 5-15 días hábiles

  • Multiple logistics options available, including express (DHL, FedEx) and sea/air freight

    • Seguimiento en tiempo real proporcionado para todos los envíos

  • 1 piece MOQ for standard bearings, with customized order quantities negotiable

Get Your NK45/20 Bearings Today

Don’t let bearing issues disrupt your production schedule. Whether you need a single replacement or bulk order, our NK45/20 Needle Roller Bearings are ready to ship. Contact us with your requirements, and our team will assist with选型 and provide a competitive quote within 24 hours.

Preguntas Frecuentes

Q: ¿Son estos rodamientos genuinos?

A: Yes, all our bearings are manufactured in-house under strict quality control or sourced from authorized partners like NSK and INA. Each product meets international standards and comes with traceable documentation.

Q: How do I confirm if the NK45/20 is compatible with my equipment?

A: Provide your equipment model, operating conditions (load, speed, temperature), and required precision grade. Our technical team will verify compatibility and recommend the optimal configuration.

P: ¿Cuál es la política de garantía?

A: We offer a 12-month warranty from the date of delivery. Defective products due to manufacturing issues will be replaced free of charge or refunded, per customer preference.

P: ¿Cuál es la cantidad mínima de pedido?

A: Standard bearings have a 1 piece MOQ. Sample orders are available without MOQ, and customized orders can be negotiated based on specifications.

P: ¿Cuánto tiempo tarda el envío?

A: Sample orders ship within 3-5 working days, bulk orders within 5-15 working days. Express delivery takes 3-7 days globally; sea freight timelines vary by destination.

Q: ¿Cómo puedo verificar la autenticidad del rodamiento?

A: Our packaging includes product labels with model information and batch numbers. We can provide Certificates of Conformity and test reports upon request to confirm compliance with standards.

Ready to order or need a quote?
Send your bearing designation, application details, and quantity — we’ll respond within 24 hours.

Sample Policy

Free samples available for distributors. 3–5 days production lead time.

Bulk Delivery

5–15 days for bulk orders. T/T, L/C and Alibaba payments accepted.

Certifications

ISO 9001:2015, ISO 14001 certified. ABMA / DIN compliant.

After-Sales

12-month warranty plus dedicated technical failure analysis support.

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