Technical requirements of sliding bearing
Most favorable price : sales@hellerbearings.com
Close both axle and bearing uniform contact, but also have a certain amount of clearance.
2, contact angle
Refers to the contact surfaces of the axle and bearing the center point.
Contact angle is not too big nor too small. Contact angle is too small will increase the bearing pressure, serious causes the deformation of the sliding bearings have a greater, accelerated wear and shorten the life of; contact angle was too large, can affect the oil film formation, do not have access to a good liquid lubrication.
Study shows that limit of bearing contact angle is 120 °. When the bearing wear of the contact angle,, liquid lubrication failure. Therefore do not affect the conditions under the premise of the sliding bearing under compression, contact angle, the smaller, the better.
From the friction from theoretical analysis, when the contact angle is 60 °, minimum of friction moment, therefore suggested that speed is higher than the 500r/min bearing, 60 ° contact angle, speed of less than 500r/min sliding bearing, antennae can be 90 °, 60 ° can also be used.
3, access point
Actual exposure of axle and bearing surfaces, available units expressed as number of real contact area. More contact points, more light, more uniform, scraping of sliding bearing an inquiry the better, on the contrary, it means scraping of sliding bearing an inquiry is not good. General contact point as close as possible, scraping the inquiry more difficult. Production should be based on performance and to determine the conditions of sliding bearing contact point, the information listed in the following table for reference:
Sliding bearing speed
(R/min) contact points
(Contact point on each area of 25x25 mm)
100 the following 3~5
100~500 10~15
500~1000 15~20
1000~2000 20~25
More than 2000 more than 25 level I and level II precision machinery can be used on tables of data, third table data on the level of precision machinery can be cut in half.
234407BM 234706BM 234406BM 517/2860V/YA 5610/2500 517/1720X1V 527/1181M 510/1180M 517/930 510/670 590/560 510/500 52780 59080 517/368M 51760U 517/238 6207-2ZN 6206-2ZN 6205-2ZN 6204-2ZN 6203-RZ 6203-2ZN 6202N 6202-2ZN 6201-2ZN 6200ZZ 6200-2ZN 62/32-ZN 62/32-Z 62/32N 62/32-2Z 62/32-2RZ 62/32-2RS 62/28-2RZ 62/22-2RZ 61996 61992 61988 61984
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1, the basic requirementsClose both axle and bearing uniform contact, but also have a certain amount of clearance.
2, contact angle
Refers to the contact surfaces of the axle and bearing the center point.
Contact angle is not too big nor too small. Contact angle is too small will increase the bearing pressure, serious causes the deformation of the sliding bearings have a greater, accelerated wear and shorten the life of; contact angle was too large, can affect the oil film formation, do not have access to a good liquid lubrication.
Study shows that limit of bearing contact angle is 120 °. When the bearing wear of the contact angle,, liquid lubrication failure. Therefore do not affect the conditions under the premise of the sliding bearing under compression, contact angle, the smaller, the better.
From the friction from theoretical analysis, when the contact angle is 60 °, minimum of friction moment, therefore suggested that speed is higher than the 500r/min bearing, 60 ° contact angle, speed of less than 500r/min sliding bearing, antennae can be 90 °, 60 ° can also be used.
3, access point
Actual exposure of axle and bearing surfaces, available units expressed as number of real contact area. More contact points, more light, more uniform, scraping of sliding bearing an inquiry the better, on the contrary, it means scraping of sliding bearing an inquiry is not good. General contact point as close as possible, scraping the inquiry more difficult. Production should be based on performance and to determine the conditions of sliding bearing contact point, the information listed in the following table for reference:
Sliding bearing speed
(R/min) contact points
(Contact point on each area of 25x25 mm)
100 the following 3~5
100~500 10~15
500~1000 15~20
1000~2000 20~25
More than 2000 more than 25 level I and level II precision machinery can be used on tables of data, third table data on the level of precision machinery can be cut in half.
