Manufacturer: ISB
Type:  SUPPORT UNIT 
Model: BF 20 

Shaft diameter: 20 mm
Dimensions
H1: 50 mm
H2: 60 mm
L3: 26 mm
G: 22 mm
A: 52 mm
E: 88 mm
F: 70 mm
Suitable for screw with Shaft Ends shape H: Size 25/28 mm
Radial dynamic load: 9.55 kN
Bearings used :
NSK 6004 ZZ Deep groove ball bearing in this dimension:
Bore diameter: 20 mm
Outer Diameter: 42 mm
Width: 12 mm