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ZR-031 bimetal bearing is made high quality low carbon steel as
backing, sintered bronze alloy which with low friction properties
as the wear-resistant layer.Composite bimetal bearing inner bronze
alloy surface can be processed with various types of oil grooves,
oil hole and oil pockets according to the different working
applications. PVB031 bimetal bush is suitable for the conditions
which can not continuously put oils or difficult to apply the
grease. It's also called JF-800 Bi-Metal Bushing,SY bimetal plain
bearing, Steel back SAE792 bimetallic bushings.
Material Structure
1.Sinter bronze with graphite-- Liner material: CuPb10Sn10 .Good
wear resistance with lower friction and excellent load carrying
capacity. Bimetallic bushing can be machined after fitting to get
precision tolerance. We also can supply the bearings with PTFE or
graphite sprayed layer on the work surface to get much lower start
friction.
2. Metal backing --low carbon steel: gives exceptionally high load
carrying capacity, excellent heat dissipation.
Inner Surface Oil Pockets Types
Bimetal Bush Oil Grooves types
Bimetal Bushing Gap Types
Availability
1. Standard cylindrical bimetal bushing, flanged bimetal bearing,
thrust washers and strips are available.
2. Special designed bimetal bearings are produced at short notice
Application
The special structure of this type self-lubricating bearing is
suitable for hostile environments, for high load application which
lubrication is difficult. Now ZR-031 bimetallic bush has been
widely used in water turbines, vane controls, injection molding
machinery, packing machines, construction equipment, tire moulds,
paper production machinery, furnace expansion plates, automotive
transmission, heavy lifting chain linkage, food production
equipment etc.
Technical Data
Materail | Steel+CuPb10Pb10 |
Alloy layer hardness HB | 80-120HB |
Max dynamic Load P N/mm² | 150 |
Max.Speed V m/s(Greased) | 3.5 |
Max.PV limit N/mm²·m/s(Greased) | 2.8 |
Friction Coefficient u(Greased) | 0.05-0.10 |
Max.Speed V m/s(Oil Lubrication) | 8 |
Max.PV limit N/mm²·m/s(Oil Lubrication) | 10 |
Friction Coefficient u(Oil Lubrication) | 0.04-0.12 |
Max temperature ℃(Greased) | 150℃ |
Max temperature ℃(Oil Lubrication) | 250℃ |
Thermal conductivity W/mk | 60 |
Coefficient of linear expansion | 18×10-6/K﹣¹ |
Match the axis hardness HRC | ≥53 |
Match the axis roughness Ra | 0.32~0.63 |