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SF-2S Boundary BearingsZHEJIANG DLG TRANSMISSON TECHNOLOGY CO.,LTD(Zhejiang Fengli Drive Technology Co., Ltd.)

Introduction

SF-2S Boundary Bearings is an improved product of SF-2, with copper back as the substrate, the middle spherical sintered bronze powder, the surface rolling with acetal resin and contains oleophilic fiber and special lubricant polymer material. The same products abroad for the DS bearing, to work under normal temperature conditions, dry friction and less oil-run occasions, with a low coefficient of friction, wear resistance, no oil lubrication advantages.
At present, the product has been used in the swing movement, easy to wear, easy to corrosive occasions, such as coiling machines, bulldozers, printing and dyeing machine, shearer and crane, high-altitude operations and other occasions.

Technical Parameters

Data Code SF-2S
Material Steel+Bronze+(POM+Pb)
Applications   Products used in automotive chassis, forging machine tools, metallurgical machinery, mining machinery, water conservancy industry, steel rolling industry.
Max Load Capacity P Static Load N/mm2 140
Dynamic Load N/mm2 70
Max Line Speed V Grease Lubrication m/s 2.5
PV Value Limit Grease Lubrication N/mm2·m/s 2.8
Friction Coefficient u Grease Lubrication 0.06~0.12
Mating Axis Hardness HB ＞270
Roughness Ra 0.4~1.25
Working Temperature ℃   -40~+120
Thermal Conductivity W/mk   52
Coefficient Of Linear Xpansion   11×10-6/K
In addition to the standard products shown in the catalog, you can also provide non-standard products or order according to customer requirements.