Back-to-Back DB

Model

Angular Contact Ball Bearings > Single/Matched Mountings > Back-to-Back DB

product

ORDER
Bearing No.
ⁿ/ₐ 		SD
Inside Diameter
[mm] 		D
Outside Diameter
[mm] 		B
Width
[mm] 		R
Chamfer Dimension
[mm] 		R1
Chamfer Dimension
[mm] 		CR1
Basic Dynamic Load Ratings
[N] 		COR1
Basic Static Load Ratings
[N] 		CR2
Basic Dynamic Load Ratings
[kgf] 		COR2
Basic Static Load Ratings
[kgf] 		FO
Factors
ⁿ/ₐ 		LG
Limiting Speed Grease
[rpm] 		LO
Limiting Speed Oil
[rpm] 		A
Eff. Load center
[mm] 		DA1
Abutment and Fillet Dimensions min.
[mm] 		DA2
Abutment and Fillet Dimensions max.
[mm] 		RA
Abutment and Fillet Dimensions max.
[mm]
7911CDB 55 80 13 1 0.6 31000 35500 3150 3600 16.3 9500 13000 31.1 61 75 1
7011ADB 55 90 18 1.1 0.6 52500 55500 5350 5650 0 6300 8500 59.9 62 85 1
7011CDB 55 90 18 1.1 0.6 55500 57500 5650 5850 15.5 9000 12000 37.4 62 85 1
7211ADB 55 100 21 1.5 1 83000 79000 8450 8050 0 6000 8000 65.7 64 94 1.5
7211BDB 55 100 21 1.5 1 75000 72000 7650 7350 0 4000 5600 86 64 94 1.5
7211CDB 55 100 21 1.5 1 86000 80000 8800 8150 14.5 8500 12000 41.7 64 94 1.5
7311ADB 55 120 29 2 1 139000 123000 14200 12500 0 4000 5600 79.5 65 114 2
7311BDB 55 120 29 2 1 128000 113000 13100 11500 0 3600 5000 102.4 65 114 2
7912A5DB 60 85 13 1 0.6 29800 35500 3050 3600 0 7500 10000 46.8 66 80 1
7912CDB 60 85 13 1 0.6 31500 37500 3200 3800 16.5 9000 12000 32.4 66 80 1
7012ADB 60 95 18 1.1 0.6 53500 59000 5450 6000 0 6000 8000 62.7 67 90 1
7012CDB 60 95 18 1.1 0.6 57000 61500 5800 6250 15.7 8500 12000 38.8 67 90 1
7212ADB 60 110 22 1.5 1 100000 97500 10200 9950 0 5300 7100 71.1 69 104 1.5
7212BDB 60 110 22 1.5 1 91000 89000 9300 9050 0 3800 5300 93.3 69 104 1.5
7212CDB 60 110 22 1.5 1 104000 98500 10600 10000 14.4 7500 11000 44.8 69 104 1.5
7312ADB 60 130 31 2.1 1.1 159000 143000 16200 14500 0 3800 5000 85.9 72 123 2
7312BDB 60 130 31 2.1 1.1 146000 131000 14900 13400 0 3400 4500 110.7 72 123 2
7913A5DB 65 90 13 1 0.6 31000 39000 3150 3950 0 7100 9500 49.1 71 85 1
7913CDB 65 90 13 1 0.6 33000 41000 3350 4200 16.7 8500 12000 33.8 71 85 1
7013ADB 65 100 18 1.1 0.6 56500 65500 5750 6700 0 5600 7500 65.6 72 95 1

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