SF-2X Boundary Lubricated Bearing for Low-Speed Applications

SF-2X boundary lubricated bearing is based on steel plate, with sintered spherical bronze powder in the middle, modified polyoxymethylene (POM) rolled on the surface, and contains oil storage pits. It is suitable for low-speed and medium-load places under normal temperature conditions, replacing traditional copper sleeves, which not only reduces costs but also prolongs service life. In special cases, it can be used on rolling mills to save refueling frequency and simplify replacement procedures. This product has been widely used in automobile chassis, forging machine tools, metallurgical mining machinery, engineering machinery, hydropower, rolling steel industry and other fields.

Get A Quote

PREV：SF-2Y Boundary Lubricated Lead-free Bearing NEXT：SF-PK PEEK Triple Composite Bearing

Product Introduction
Parameter
Material Description
Contact Us

Product Features

1 Can work for a long time under oil-free conditions.

2 More suitable for low-speed and heavy-load workingconditions, with good wear resistance and extremely low frict.

3 Suitable for situations where oil film is difficult to form, such as reciprocating, rotating and intermittent movements.

4 Resistant to corrosion and oxidation.

5 Maintenance-free and long service life.

Why Choose Oilless Bearings

Reduce Manufacturing costs

There is no need for oil supply device, oil injection hole or oil groove processing, which can greatly save manufacturing costs.

Reduce Operating Costs

It greatly reduces the usage of lubricating oil, reduces equipment maintenance, and avoids hidden dangers caused by insufficient oil supply, effectively reducing operating costs.

Shorten Design Time

The oil-free design simplifies the product structure and effectively saves design time. We are professional ODM Suppliers of SF-2X Boundary Lubricated Bearing for Low-Speed Applications

Conducive To Environmental Protection

No waste oil recycling is required, which is also beneficial to environmental protection.

Application Fields

High Temperature

·Steel factory

·Smelting furnace

·Drying equipment

·Baking oven

·Heat controller

Water Proof

·Dam gate

·Water pump

·Fluid switch structure

·Offshore structures

·Dock and silt machine equipment

Chemical Industry

·Chemical factory

·Electroplating equipment

·Wastewater treatment equipment

·Dyeing machinery

·Oil and chemical refining equipment

Energy

·Wind power

·New energy

Ship

·Deck crane

·Anchor

·Hatch cover

·Rudder arm

·Lifting machinery and lifting ring equipment

Automobile Manufacturing

·Stamping mold

·Welding structure

·Painting and drying line

·Metal conveyor belt

·Machine tools

Heavy Industry

·Steel pipe factory machinery

·Tire and paper mills

·Power plant

·Connecting toggle of mold injection machinery

Construction, Mining, Loading

·Mixers, grinders, pulverizers

·Construction machinery

·Mining equipment

·Connecting rod bearings

Bridges and Lift Rails

·Bridge bearings

·Beams, bridges, suspension bridges

·Nuclear energy related reactors

·Steam generator

Metallographic Structure and Material Structure

①Polyoxymethylene and lead mixture 0.3~0.5mm
②Spherical bronze powder 0.2~0.3mm
③Steel back 0.4~2.2mm
④Electroplated layer: Copper layer thickness 0.008mm

Application Features

●Good load bearing and good wear resistance.
●Suitable for rotating motion and swinging motion under high load and low speed, and occasions where frequent opening and closing under load make it difficult to form fluid dynamic lubrication.
●Under boundary lubrication conditions, it can be maintained without oiling for a long time, and oiling in the transition layer can make the bearing service life longer.
●The surface plastic layer can leave a certain margin during processing and molding, and can be processed by itself after assembly and pressing into the seat hole to achieve better assembly size.
●The products are mainly used in automobile chassis, metallurgical machinery, mining machinery, water conservancy machinery, construction machinery, agricultural machinery, rolling equipment, etc.

Chemical Properties

Model	Air	Vacuum	Water	Steam	Weak acid	Medium acid	Strong acid	Alkaline solution
SF-2X	good	good	good	good	poor	N/A	N/A	good

MMD-10 End Surface Friction and Wear Test

Model	Test Duration	Test Conditions			Friction Coefficient	Final Temperature	Final Wear Amount
Model	Test Duration	Lubrication Type	Speed	Pressure	Friction Coefficient	(℃)	(mm)
SF 2X	3hr	Grease	0.4m/s	3.5N/mm2	0.071	40	0.006

Technical Parameters

●Maximum bearing pressure: 70N/mm2
●Applicable temperature range: -40~+130℃
●Maximum sliding speed: 2.5m/s
●Friction coefficient: 0.05~0.25
●Maximum allowable PV value (dry): 2.8N/mm2 .m/s
●Maximum allowable PV value (oil): 22N/mm2 .m/s
SUBMIT

About US

Zhejiang Mingxu Machinery Manufacturing Co., Ltd. Zhejiang Mingxu Machinery Manufacturing Co., Ltd., formerly known as Jiashan Mingxu Precision Machinery Factory, was founded in 2011. The company is located in the hinterland of the Yangtze River Delta Integrated Development Demonstration Zone, with location and convenient transportation. With more than ten years of manufacturing and R&D experience, the company has been deeply involved in the development and production of solid lubricating bearings, skateboards, slideways, and sliders. ODM Suppliers and Company of SF-2X Boundary Lubricated Bearing for Low-Speed Applications in China. The product manufacturing adopts modern automation equipment, strictly implements the ISO2000 quality management system standard, and the main processes are processed by high-precision CNC machines. The company's main products cover a series of products such as JDB solid inlaid self-lubricating bearings, steel-copper sintered bearings, SF-1 self-lubricating bearings, SF-2 boundary self-lubricating bearings, and FB090 copper bearings. Widely used in automobile industry, construction machinery, metallurgical equipment, mining machinery, injection molding, mold, textile, printing and many other machinery manufacturing fields; Till now, the company's products have spread all over China and exported to many foreign countries, and are deeply recognized and loved by domestic and foreign customers.

Mingxu Machinery adheres to the service tenet of "quality-oriented high-quality service", and strive to provide customers with professional products and services. Supply Wholesale SF-2X Boundary Lubricated Bearing for Low-Speed Applications. The company will continue to introduce talents, improve the management mechanism, integrity, development, innovation, and strive to build a world-class brand.