Joint Bearing

Self Lubricating Spherical Plain Bearing SI12E-SI40ES for Industrial Machinery with OEM Service

SKU: a01f47883549 In Stock

Eliminate maintenance hassles and boost machinery uptime with our Self Lubricating Spherical Plain Bearing SI12E-SI40ES series, engineered to deliver smooth, long-lasting rotation in industrial applications. These bearings combine hydrodynamic lubrication with a self-lubricating bushing design, ensuring consistent performance even in hard-to-reach installations where regular maintenance is a challenge.

  • Steel-on-steel sliding contact minimizes friction for high precision operation and extended service life, critical for heavy-duty machinery
  • Supports both trust and radial loads, making it ideal for articulated joints in machine tools, conveyors, and agricultural equipment
  • Available in SI12E to SI40ES models with OEM customization options, ensuring a perfect fit for your specific equipment requirements
Wholesale Price (FOB)
¥1.75
MOQ: 1 Piece • Bulk discounts available on inquiry
12-Month Warranty
Free Samples
Global Shipping
Product Specifications

Technical Details & Description

Especificaciones del Producto

Parámetro

Detalles

Modelo NO.

Cojinete Hidrodinámico

Material del buje

Auto-Lubricación

Dirección del Rodamiento

Confianza y Radial

Método de Lubricación

Control Intermitente de Combustible

Espesor de película lubricante

Lubricación de Película Delgada

Nombre del Producto

Cojinete de Superficie Esférica

Paquete

Embalaje Neutro de Rodamiento

Contacto Deslizante

Acero sobre Acero

Características

Alta Precisión, Larga Vida, Bajo Ruido

Servicio

OEM ODM

Paquete de Transporte

Palet de cartón

Especificación

100*150*90 mm

Origen

China

Código HS

8482101000

Capacidad de Producción

SI12E, SI15ES, SI17ES, SI20ES, SI25ES, SI30ES, SI35ES, SI40ES
Lubricant & Load
1000000 units

Industrias de Aplicación

Industria

Equipo Típico

Maquinaria Industrial

Herramientas de Máquina, Prensas de Impresión, Reductores

Maquinaria Agrícola

Cosechadoras, Tractores, Equipos de Labranza

Construcción

Nueva Energía

Automotive Manufacturing Assembly Line Equipment, Conveyors
Excavators, Loaders, Cranes
Wind Turbine Components, Solar Panel Production Machinery

Reduce Downtime with Self Lubricating Spherical Plain Bearings SI12E-SI40ES for Industrial Machinery

Industrial machinery operators face constant challenges with bearing maintenance—frequent lubrication intervals disrupt production, while manual greasing errors lead to premature wear. When bearings fail unexpectedly, the cost of downtime, replacement parts, and labor can quickly erase profit margins. For manufacturers relying on continuous operation, finding a bearing that combines durability with low maintenance needs isn’t just a preference—it’s a necessity.

Self Lubricating Design Cuts Maintenance Costs

Our Self Lubricating Spherical Plain Bearing SI12E-SI40ES series addresses these pain points directly. The self-lubricating bushing material eliminates the need for regular manual lubrication, reducing maintenance hours and the risk of human error. With high precision (P0-P4 class) and low noise performance (Z2-Z4 grade), these bearings deliver stable operation in machine tools, printing presses, and reducers—critical equipment where precision directly impacts product quality. Backed by our ISO9001-certified production process, each bearing undergoes rigorous quality control to ensure consistent performance.

Engineered for Heavy-Duty Industrial Environments

Spherical plain bearings excel in applications requiring angular misalignment compensation and heavy radial/axial load handling. The SI series, with its steel-on-steel sliding contact, is specifically designed for industrial machinery operating under high loads and variable speeds. Whether in agricultural equipment like harvesters or construction machinery such as excavators, these bearings maintain performance in dusty,振动-intensive environments. Their thin film lubrication system ensures smooth operation even under intermittent load conditions, making them ideal for dynamic industrial applications.

Technical Advantages That Drive Performance

The SI12E-SI40ES series incorporates key technical features that enhance machinery reliability. The hydrodynamic lubrication design creates a protective film between contact surfaces, reducing friction and extending service life. The combination of high precision machining (100*150*90 mm specification) and self-lubricating material ensures minimal vibration and noise, critical for precision equipment like CNC machines. Additionally, the trust and radial load capacity allows these bearings to handle complex force distributions, a common requirement in gearboxes and industrial conveyors. Our OEM/ODM service further enables customization to meet specific equipment dimensions and performance needs.

Total Cost of Ownership: Why Quality Matters

Choosing low-quality spherical plain bearings may seem cost-effective initially, but the hidden costs add up. Premature failures lead to unplanned downtime—costing an average of $5,000-$20,000 per hour for manufacturing lines. Inferior materials and imprecise machining result in increased energy consumption and frequent replacements. In contrast, our SI series bearings, with their long life design and 12-month global warranty, reduce total cost of ownership by minimizing maintenance, extending service intervals, and preventing production disruptions. Each bearing is manufactured to international standards, ensuring compatibility with global machinery brands and reducing the risk of equipment damage from mismatched components.

Your Reliable Bearing Partner Since 2005

Jinan Saifan Bearing has served global industrial clients for over 18 years, building a reputation for stable supply and technical expertise. Our integrated manufacturing facility includes a full R&D department and QC lab, ensuring each bearing meets strict performance criteria. We offer flexible order options—1pc MOQ for standard items and 3-5 day sample lead times—to support both emergency repairs and large-scale production needs. With customers across Europe, America, Southeast Asia, and the Middle East, we understand diverse industrial requirements and provide free technical guidance to ensure proper bearing selection. Our ISO14001 certification also reflects our commitment to sustainable manufacturing practices, aligning with global environmental standards.

Packaging & Shipping

    Embalaje neutro con palet de cartón para un transporte seguro

  • 3-5 day sample lead time, 5-15 day bulk delivery
  • Multiple logistics options: air, sea, and express (DHL/FedEx/UPS)
  • Seguimiento en tiempo real proporcionado para todos los envíos

  • 1pc minimum order quantity for standard models

Get Your SI Series Bearings Today

Don’t let bearing issues slow down your production. Whether you need SI12E, SI40ES, or other sizes in the SI series, our team can provide quick quotes and fast delivery. Simply share your bearing model, application details, and required quantity—we’ll help confirm compatibility and get your order processed within 24 hours. With free samples available (buyer covers freight), you can test performance before committing to bulk orders.

Preguntas Frecuentes

Q: Are these bearings suitable for high-temperature environments?

A: The self-lubricating material and steel construction of the SI series allow operation within standard industrial temperature ranges. For extreme heat applications, contact our technical team to discuss material modifications.

Q: How do I determine the right SI model for my equipment?

A: Provide your equipment make, model, and operating conditions (load, speed, temperature), and our engineering team will recommend the appropriate SI series bearing with free technical guidance.

P: ¿Qué cobertura de garantía ofrecen?

A: All SI series bearings come with a 12-month global warranty. We provide free defect replacement or refund for manufacturing-related issues.

Q: Can you accommodate custom dimensions for OEM projects?

A: Yes, we offer full OEM/ODM customization. Share your technical drawings or specifications, and our R&D team will develop a tailored solution.

Q: What payment methods do you accept?

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.

Engineering Insights

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