Selection Of Lubrication Method For Bushing
Determination of Lubrication Method for Bushing
Pm —— Mean pressure on the journal (MPa)
v —— Linear velocity of the journal surface (m/s)
Lubrication Methods:
l k≤6, Use grease, generally grease cup lubrication
l k＞ 6-50，Lubricating oil, needle valve oil cup lubrication
l k＞50-100，Lubricating oil, oil cup or splash lubrication, requires water and circulating oil cooling
l k>100, Use lubricating oil, pressure lubrication
1. Oil Bath Lubrication: In oil bath lubrication, the oil level should be at the center of the lowest rolling element in the rolling bearing, i.e., half the roller height. When the ratio of the bearing's actual operating speed to its permissible limiting speed for lubrication is less than 0.4, the oil level can be higher.
2. Splash Lubrication: For splash lubrication, the oil level height can generally be determined according to the recommended oil level height when using gears as the oil slinging component. It is generally 3 times the tooth depth deep, with a minimum of 1/2 the tooth depth.
3. Circulating Oil Flow Rate:
General circulating oil flow rate:
Forced circulating oil flow rate:
Q —— Oil flow rate (l/min)
f —— Friction coefficient of the rolling bearing
d —— Bearing inner diameter (mm)
n —— Bearing rotational speed (r/min)
Fr —— Radial load on the bearing (N)
—— Temperature difference between the oil outlet and oil inlet
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MG-1A Aluminum matrix composite bearings：
MG-1A is a composite material of PTFE compound tape on aluminum shell, the PTFE is tape up to 0.20 mm thickness, enabling the bearing can be sized after being fixed, meanwhile the thick PTFE layer isolates noise. The bearing is widely applied in OA machinery, shock absorber for light design bicycle.
