| ¡ñBeaning Selection & Calculation |
| ¡ñSF-1 Self-lubricating Bearings(SF-10,SF-11,SF-12,SF-13,SF-14,SF-15,SF-16,SF-17,SF-18,SF-19) |
| ¡ñSF-2 Prelubricated Bearings(SF-20,SF-21,SF-22,SF-23) |
| ¡ñSF-3 Bimetal Bearings(SF-30,SF-31,SF-32,SF-33,SF-34) |
| ¡ñSF-4 Wrapped Bronze Bearings(SF-40,SF-41,SF-42) |
| ¡ñSF-5 Solid-lubricant Bearings(SF-50,SF-51,SF-52,SF-53,SF-54,SF-58,SF-59) |
| ¡ñSF-6 Ball Retainer Bearings(SF-60,SF-61,SF-62) |
| ¡ñSF-7 Oil-retaining Bearings(SF-70,SF-71) |
| ¡ñSF-8 Point-lubricating Bearings(SF-80) |
| ¡ñWrapped Bearings Installation |
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| Products
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SF-3 Series
of bimetal bearings
SF-3 Introduction
SF-3 series bimetal cylindrical bushes¡¢half
bearing¡¢thrust washer is sintered and rolled for many times
is a bushing based on high quality, low-carbon steel as its
backing and sintered with lead, tin and bronze alloy or rolled
with aluminium tin alloy as its surface. The products are
mainly applied in connecting rod of automobile engine, rocker,
gear-box, automobile knuckle arm, steel plate spring, construction
machinery, agriculture machinery, etc.
The alloy number and it¡¯s correlative code
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Type
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alloy number
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Hardness of alloy layer
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Corresponding code
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SF-30
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CuPb10Sn10
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60-90HB
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SAE-797,DIN CuPb10Sn,JIS-LBC3.UNS
C93700.Clevfte F100. Daldo L10.D.A.B.D57.federal Mogul
HF2.Glacler SY.Glyco66.Miba2¡€1010.Talho HF2.Kart Schmidt
Ds94OS
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SF-31
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CuPb24Sn4
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45-70HB
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SAE-799.GLYOO 68.RS-LBC6.DAIDO L23
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SF-32
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CuPb24Sn
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40-60HB
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SAE-49
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SF-33
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CuPb30
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30-45HB
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SAE-783.GLYCO74JIS-AJL
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SF-34
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AlSn20Cu
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30-40HB
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SAE-48.JIS-KJS
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The alloy number and it¡¯s correlative code
|
Type
|
alloy number
|
Hardness of alloy layer
|
Corresponding code
|
|
SF-30
|
CuPb10Sn10
|
60-90HB
|
SAE-797,DIN CuPb10Sn,JIS-LBC3.UNS
C93700.Clevfte F100. Daldo L10.D.A.B.D57.federal Mogul
HF2.Glacler SY.Glyco66.Miba2¡€1010.Talho HF2.Kart Schmidt
Ds94OS
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SF-31
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CuPb24Sn4
|
45-70HB
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SAE-799.GLYOO 68.JIS-LBC6.DAIDO
L23
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SF-32
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CuPb24Sn
|
40-60HB
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SAE-49
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SF-33
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CuPb30
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30-45HB
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SAE-783.GLYCO74JIS-AJL
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SF-34
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AlSn20Cu
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30-40HB
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SAE-48.JIS-KJS
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Tech.Data
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PRO
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Max load (N/mm 2)
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Tenslle strengthN/mm 2)
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Max speed (Oil lubricating)(m/s)
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Coeff.of friction
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PV Limit (N/mm2 m/s)
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| fat lubricating |
oil lubricating |
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SF-30
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150
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185
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5
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0.06-0.14
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2.8
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10
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SF-31
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130
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150
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10
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0.06-0.16
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2.8
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10
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SF-32
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130
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170
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10
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0.06-0.16
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2.8
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10
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SF-33
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120
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200
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15
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0.08-0.16
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2.5
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8
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SF-34
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100
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200
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25
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0.08-0.17
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/
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6
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SF-3 Joint forms of SF-3 wrapped Bearings
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Application characteristics
SF-30£ºVery high
fatigue strength and load capacity, with high shock resistance
and good corrosion resistance. When cooperated with hard shaft,
the joumal rigidity is not less than 53HRC.Fit for middle
load, middle to high speed. Suitable for wrapped bushing and
thrust washer and connecting rod bearing in internal combustion
engine used in mechanical equipment and high shock bushings.
SF-31£ºVery high
fatigue strength, load capacity, shock resistance and corrosion(inlay,
acclimatization and compatibility.) When cooperated with
hard shaft, the joumal rigidity is not less than 48HRC.
Fit for bushings under conditions of high speed, oscillating
or rotating motion. When plating soft-alloy of surface of
bushing, it can be used in high load and speed internal
combustion engine, principle axis and connecting rod bushing,
thrust washer, wrapped bushing, bushings used in steel rolling
machines and machine tol bushing etc.
SF-32:Relatively
high fatigue strength and load capacity, good performance
of bushing surface and be liable to be corrupted with lubricating
oil. It can be cooperated with hard or soft shafts if there
is soft alloy coating. Journal rigidity is not less than
45HRC. It is mainly used in principle axis of internal combustion
engine, connecting rod bushing, thrust washer, wrapped bushings
etc.
SF-33:Moderate
fatigue strength and load capacity, It has good corrosion
resistance and relatively good surface performance. It can
be worked with soft shaft with joumal rigidity being not
less than 250HB. It is mainly used in principle axis of
internal combustion engine, connecting rod bushing, thrust
washer, wrapped bushing or bushings used in compressing
and refrigerating machine.
SF-34: Moderate
fatigue strength and load capacity. Good surface performance.
Being liable to be corrupted with lubricating oil. The working
surface of the bushing must be plated with soft alloy layer
and its corresponding joumal rigidity is not less than 270HB.
Mainly used in principle axis of internal combustion engine,
connecting rod bushing, thrust washer as well as wrapped
bushing.
Provide standardized products: Cylindrical bushes P23,
thrust washers P17¡¢P19£¬flat strip material P17.
Provide non-standardized products: Cylindrical bushes, flanged
bushes, thrust washers, flat strip material, half bearing,
wear plate, SF-3 with steel bush.
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