Sintered Porous Metal Bearings

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Sintered Porous Metal Bearings Specification

Product Type
Sintered Porous Metal Bearings

Shape
Cylindrical (Bush Type and Flanged Type Available)

Chemical Composition
Copper 89%, Tin 11% (Bronze) or Iron 91%, Carbon 1%, Graphite 2%

Purity
99%

Grade
SAE 841 / ISO 4385

Application
Electric Motors, Fans, Domestic Appliances, Automotive, Pumps, Machinery

Maximum PV Value
1.6 N/mmm/s

Maximum Sliding Velocity
2.5 m/s

Noise Level
Low, suitable for quiet operation

Static Load Capacity
100N/mm

Lifespan
Up to 50,000 working hours (subject to application)

Tolerance
ID: H7, OD: S7 Standard

Dynamic Load Capacity
40N/mm

About Sintered Porous Metal Bearings

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 characterristics and at the same time ensure best mechanical strength, grade or porosity for oil retention and self lubrication in its finished form.

Sequence of production:

Forming ( or compacting), Sintering, Sizimg, Oil Impergnation

Materials : Sintered bronze / Iron sintered ad per IS : 3980 : 1982

Range : Plain & Flanged Bushes, Self aligned Bushes, Solid Rod, Plate & different profile components as per drawings / samples.

Application :

Sintered Bronze Bushes are used for high Speed application ( upto 18000 rpm )
Iron Sintered bushed are for speed ( upto 3000 rpm).

Materials Composition :

Grade I, Copper Base
Elements	Class A %	B3%	B2 %	B1%
Iron ( Fe )	1.00 mAX	48-50	38-40	28-30
Tin ( Sn)	8-9.5	4-6	4-6	4-6
Carbon ( C )	2.0 mAX.	2.0	2.0	2.0
Impurities	2.0	2.0	2.0	2.0
Copper ( Cu )	BAL	BAL	BAL	BAL

Grade II, Iron Base
Elements	CLASS A %	B3 %	B2 %	B1%
Copper ( Cu )	1.00 Max	9-11	4-6	1.5-3.5
Carbon ( C)	0.25 Max	0.25	0.25	0.25
Impurities	2.0	2.0	2.0	2.0
Iron( Fe )	BAL.	BAL.	BAL.	BAL.

Superior Performance for Quiet Environments

Designed for low noise operation, these sintered porous bearings enable quiet and efficient function in a range of devices. Their optimized chemical composition and precise tolerances assure both longevity and consistent performance, making them the preferred choice for applications demanding minimal sound disturbance.

Customizable Shapes and Robust Capacities

Choose from bush-type, flanged, or fully customized shapes to fit each unique need. With static load capacities up to 100 N/mm and dynamic support up to 40 N/mm, these bearings provide strength and adaptability for distributors, importers, exporters, suppliers, and traders across machinery and automotive domains.

FAQs of Sintered Porous Metal Bearings:

Q: How are sintered porous metal bearings installed in electric motors and fans?

A: Sintered porous metal bearings are typically press-fit or housed within the motor or fan assembly, aligned according to ID H7 and OD S7 tolerance standards to ensure optimal rotational stability and reduce vibration.

Q: What is the primary benefit of using these bearings in domestic appliances?

A: Their low noise level and long lifespanup to 50,000 working hoursmake them ideal for domestic appliances where quiet operation and reduced maintenance are essential.

Q: When should I consider bush-type versus flanged-type bearings for my machinery?

A: Bush-type bearings are suited for applications needing simple shaft support, while flanged-type bearings provide additional axial location and ease of mounting, especially when precise positioning is critical.

Q: Where are these bearings commonly used in automotive and pump systems?

A: They are widely employed in rotating shafts, housing supports, and pump assemblies, offering reliable motion, wear resistance, and quiet operation in high-demand automotive and fluid transfer environments.

Q: What process is used to ensure chemical purity and grade compliance?

A: Advanced powder metallurgy techniques are implemented to maintain alloy purity (99%) and adherence to SAE 841 / ISO 4385 specifications, ensuring consistent quality and high-grade performance.

Q: How does the bearings maximum sliding velocity affect its suitability for high-speed applications?

A: A maximum sliding velocity of 2.5 m/s means these bearings efficiently handle moderate rotational speeds, making them suitable for standard electric motors, fans, and similar equipment without excessive wear or overheating.

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