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]
7308BDB 40 90 23 1.5 1 73000 60500 7400 6200 0 5000 6700 77.5 49 84 1.5
7909A5DB 45 68 12 0.6 0.3 24600 25400 2510 2590 0 9500 13000 38.4 50 65.5 0.6
7909CDB 45 68 12 0.6 0.3 26000 26800 2660 2730 16 12000 16000 27.1 50 65.5 0.6
7009ADB 45 75 16 1 0.6 37500 37500 3850 3800 0 7500 10000 50.6 51 70 1
7009CDB 45 75 16 1 0.6 39500 38500 4050 3950 15.4 11000 15000 32.1 51 70 1
7209ADB 45 85 19 1.1 0.6 64500 57500 6550 5850 0 7100 9500 56.5 52 80 1
7209BDB 45 85 19 1.1 0.6 58500 52500 5950 5350 0 5000 6700 73.5 52 80 1
7209CDB 45 85 19 1.1 0.6 66500 57500 6750 5850 14.2 10000 14000 36.4 52 80 1
7309ADB 45 100 25 1.5 1 103000 87000 10500 8900 0 5000 6700 66.9 54 94 1.5
7309BDB 45 100 25 1.5 1 95000 80500 9650 8200 0 4500 6000 85.8 54 94 1.5
7910A5DB 50 72 12 0.6 0.3 25900 28400 2640 2900 0 9000 12000 40.5 55 69.5 0.6
7910CDB 50 72 12 0.6 0.3 27400 30000 2800 3050 16.2 11000 15000 28.3 55 69.5 0.6
7010ADB 50 80 16 1 0.6 40000 42000 4050 4300 0 7100 9500 53.5 56 75 1
7010CDB 50 80 16 1 0.6 42000 44000 4300 4450 15.7 10000 14000 33.4 56 75 1
7210ADB 50 90 20 1.1 0.6 67000 63000 6850 6400 0 6300 9000 60.4 57 85 1
7210BDB 50 90 20 1.1 0.6 60500 57000 6200 5850 0 4500 6300 78.7 57 85 1
7210CDB 50 90 20 1.1 0.6 69500 63500 7100 6450 14.5 9500 13000 38.7 57 85 1
7310ADB 50 110 27 2 1 121000 104000 12300 10600 0 4500 6000 73.2 60 104 2
7310BDB 50 110 27 2 1 111000 96000 11300 9800 0 4000 5600 94.1 60 104 2
7911A5DB 55 80 13 1 0.6 29300 33500 2990 3400 0 8000 11000 44.5 61 75 1

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