Bronze Graphite Plugged Bushings

Bronze graphite plugged bushings are advanced self-lubricating bearings engineered for demanding industrial applications. These premium bushings are precision-machined from continuous cast bronze and strategically plugged with solid graphite lubricant plugs. The innovative design ensures that a bushing and its mating surface maintain optimal separation through a consistent film of lubricant, eliminating the need for supplementary lubrication systems.

The self-lubricating mechanism begins when the shaft starts rotating. A thin film of solid graphite lubricant is automatically transferred onto the shaft surface, creating a protective barrier that prevents metal-to-metal contact. This continuous lubrication process ensures smooth operation and exceptional longevity, even in applications where traditional oil or grease lubrication is impractical, expensive, or prohibited.

기술 사양

Grade	650	650S5	650W1	650W3	650S1	650S2	650S3
머티리얼 구성	CuZn25Al5Mn4Fe3				CuSn5Pb5Zn5	CuAl10Ni5Fe5	CuSn12
Density	7.8	7.8	7.8	7.8	8.9	7.8	8.9
HD Hardness	≥210	≥250	≥210	≥230	≥70	≥150	≥75
Tensile Strength (MPa)	≥750	≥800	≥755	≥755	≥250	≥500	≥270
Yield Strength (MPa)	≥450	≥450	≥400	≥400	≥90	≥260	≥150
연신율 (%)	≥12	≥8	≥12	≥12	≥13	≥10	≥5
Thermal Expansion Coefficient	1.9×10^-5/°C				1.8×10^-5/°C	1.6×10^-5/°C	1.8×10^-5/°C
Max Operating Temperature (°C)	-40~+250				-40~+400
Max Load (MPa)	50	75	75	100	50	50	50
Max Linear Speed (m/s)	Dry Friction: 0.5 Lubrication: 2.5				Dry Friction: 0.1 Lubrication: 0.25
Max PV Value (N/mm²*m/s)	Dry Friction: 1.65 Lubrication: 3.25				1.65

Lubricant	Features	Typical Applications
SL1 Graphite + Additives	Excellent chemical stability, low friction coefficient, suitable for use up to 400°C.	General industrial applications, long-term exposure to air.
SL4 PTFE + MoS₂ + Additives	Lower friction coefficient, excellent lubricity, suitable for use up to 300°C.	For water or marine environments, such as ships, hydro turbines, or gas turbines.

Industries and Applications

Bronze graphite plugged bushings excel in challenging environments where traditional lubrication methods fail. Their versatility makes them ideal for:

Snowmobiles
Steel mills
Furnace dragouts
Drying equipment
Roasters
Heat exchangers
Press dies
Assembly lines
Machine tools
Chain conveyors
Offshore structures
Deck cranes
윈치
Hatch covers
Rudder arms
Hoisting equipment
Tire mills
Paper mills
Toggle link bearings for injection molding machinery
Mixers
Grinders
Pulverizers
건설 기계
Mining rigs
Arm link bearings
Power shovels
Automotive suspension and steering systems
Railway bogie assemblies
Marine and shipbuilding equipment
Hydroelectric and gas turbines
자재 취급 장비
Food processing machinery
섬유 기계
Printing and converting equipment
Other high-temperature, heavy-load, or hard-to-maintain environments

Get Expert Consultation

Our experienced engineers can help you select the optimal bronze graphite plugged bushings for your specific application. Contact us for technical assistance, custom sizing, or volume pricing information.