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Product information

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Recommendations

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Product data Page.................4 Basic rating life Page ..............57
Temperature factor b Table 5 2 OperatingTemperaturetemperaturefactor overincl. b

Basic rating life

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Sliding contact surface combi-nations requiring maintenance: steel-on-steel and steel-on- bronze

°C– –120 1,0 120160 0,9 For the initial lubrication330G
160180 0,8 180 –Please contact SKF h = b
1 b
2 b
3 b
4 b
5 –––––p
2,5 vand when the product is regularlyrelubricated thereafterG
The following temperature limits must also be respected 80 °C For bearings of series GEZ .. ES-2RS(polyurethane seals) 130 °C For all other sealed bearings(polyester elastomer seals) hN =G
h f
β f
H 120 °C Upper temperature limit for standard grease or G
Sliding factor b 3 Diagram 11 N =60 f G
hN whereG
h =rating life for the initial lubrica-tion, operating hoursG
521102050100200500d hN =basic rating life with regularrelubrication, operating hoursG
3 N =basic rating life with regularrelubrication, number of oscilla- tionsb
1 =load direction factor,b
1 =1 for constant directionloadb
k mm b 1 =2 for alternating directionloadb
2 =temperature factor ( âž” Table
5 )b
3 =sliding factor ( âž” Diagram
11 )b
4 =velocity factor ( âž” Diagram
12 )b
5 =factor for angle of oscillation (
Velocityfactor b âž” Diagram
13 ), see alsounder “NB.”f=frequency of oscillation, min
4 Diagram 12 –1 f
β =factor depending on the angle ofoscillation(
4 âž” Diagram
14 ), seealso under “NB.”f
1015 Steel-on-bronzeSteel-on-steel H =factor depending on frequencyof relubrication ( âž” Diagram
15 )p=specific bearing load, N/mm
5210,0020,0050,010,020,050,1vm/s b 2 (for values of p < 10 N/mm
2 use p = 10 N/mm
2 )v=mean sliding velocity, m/sIf the basic rating life requirement isnot met, then the relubrication intervalN ( âž” Diagram
15 ) should be short-ened, or a larger bearing or rod end should be chosen. 24