Self Lubricated Bushes

SINTERED BRONZE /IRON SINTERED SELF LUBRICATED BUSHES
Powder metallurgy (PM) is a process for forming metal parts by heating compacted metal powders to just below their melting points. In other words, PM is a metal shaping process that creates near-net parts from powdered metal.
Sintered bronze bearings are characterized by being self-lubricating and they are made of porous bronze or iron that are usually field with oil.

Sintered Porous Metal Bearings are Powder metallurgical parts, the starting materials are obviously metal powder. The metal powder used are specifically produced to give flow and compacting characteristics and at the same time ensure best mechanical strength, grade or porosity for oil retention and self lubrication in its finished form.

Sintered Bronze Bushes are used for High Speed application (up to 18000 rpm) Iron Sintered Bushes are used for speed (upto 3000 rpm).

Sintered bronze or iron bearings can be used in wide range of loadings but thay can show the best performance in light loads and high speeds.
The oil in porous release during the operation with increasing pressure and tempreture. Low wear because of the low friction so, long intervals between maintanace.
If the conditions are right, such as a clean environment, correct operating
temperature, enough oil, defined speed and loading, oil-bronze/iron bearings can achieve lifetimes in excess of 50,000 hours. Thay are quiet at high speeds.
Hardened or non-hardened, polished material can be used for the shaft. The smoother the surface finish, the longer the life time. In bearings with lower stresses, drawn shafts can be used.
Sintered bronze/iron bushes Can be supplied in many different alloys

Self Lubricated Bushes

Learn more about Iron Sintered Self Lubricated Brushes.

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‌Bronze – Based Grades

Tools need to be created for all material grades except BP25, FP20 and SO16 that are available in the dimensions indicated in the standard bearings catalogue.

Static Load Dan / cm²

Min,OPen Porosity %

Expansion 10^-6 / ˚C

A %

Brinell Hardnees HB

K N/ mm²

Total Other Elements %

Cg%

Sn %

CU %

DIN 3090 Standard Equivalent

Afnor or ISO Standard

Afnor or ISO Description

Grades

200

2⟨

140

⟨2

–

8-10.5

Complement

SINT A50

NFA 95731

FU-E10-62

BP25

200

3⟨

140

⟨2

–

9-11

Complement

SINT A50

NFA ISO

5755/1

FU-E10-64

ISO P4012Z

BP22

350

4⟨

180

⟨2

–

9-11

Complement

SINT B50

NF ISO

5755/1

FU-E10-68

ISO P4013Z

BP15

450

5⟨

220

⟨2

–

9-11

Complement

SINT C50

Non-Standard

FU-E10-70

BP10

150

1⟨

120

⟨2

0.5-2

9-11

Complement

SINT A51

NF ISO

5755/1

FU-E10Cg 1-62

ISO P4022Z

BG22

250

3⟨

160

⟨2

0.5-2

9-11

Complement

SINT B51

NF ISO

5755/1

FU-E 10Cg 1-66

ISO P4023Z

BG20

Iron-Based Grades

Static Load Dan / cm²

Min,OPen Porosity %

Expansion 10^-6 / ˚C

A %

Brinell Hardnees HB

K N/ mm²

Total Other Elements %

C %

Fe %

CU %

DIN 3090 Standard Equivalent

Afnor or ISO Standard

Afnor or ISO Description

Grades

450

2⟨

200

⟨2

⟨0.25

Complement

1-4

SINT A10

Non-Standard

FC 10-U3-56

FP20

1000

–

56 ⟨ HRB

350

⟨2

0.2-0.9

Complement

1-4

SINT B11

NF ISO

5755/2

F80-U3-60

ISO P2053Z

FP18

500

220

⟨2

⟨0.25

Complement

SINT A20

Non-Standard

F10-U25-58

SO25

Technical Data:

Technical Data		Bronze BP25	Iron Alloy FP20
Specifications	Similar To DIN 30910	SINT A 50,	SINT A 10,
Max.Loading	Static	20 N/mm²	45 N/mm²
Max.Loading	Dynamic load	10 N/mm²	22.5 N/mm²
Max.PV limit	Oil Lubrication	1.8 N/mm^2.m/s	1.8 N/mm^2.m/s
Max.Speed	Oil Lubrication	6.0 m/s	4.0 m/s
Friction Coefficient		0.05 – 0.25	0.05 – 0.25
Match the axis	Hardness HB	﹥24	﹥35
Match the axis	Roughness Ra	0.6µm≥	0.2µm≥
Density		6.2 g/cm³	5.6 g/cm³
Temperature Range	Min	-5 ^◦C	-5 ^◦C
Temperature Range	Max	90 ^◦C	90 ^◦C
Minimum apparent porosity		23	20

Operating Performance:

Dry	★★	★★
Oil Lubricates	★★★★	★★★★
Grease Lubricated	★★★	★★★
Water Lubricated	★	★