Conn Blade Mounting Considerations - Clear Area

Beyond impeller bore configurations, with the Conn styles as well as other louvered or vented styles open area in the center of the impeller must also be considered. Typically, reinforcing discs, taper plates, sandwhich the blade to stiffen the disperser disc. Due to the louver placement on the conn blade, the size of these disks, and with small sizes - the diameter of the mounting hub, must be considered.

The below table gives approximate dimensions of the CONN Blade styles IT and ITT. The Clear Diameter (yellow column) defines the diameter of a circle clear of obstruction. The clear diameter represents the largest taper plate or hub a given size impeller can handle.

CONN Blade Measurements Intensive Type (IT) and Intensive Type with Teeth (ITT)

CONN Blade StylesCONN IT BladeCONN ITT Blade
Size Clear Diameter Diameter Material
Thickness
Diameter Material
Thickness
2 1" 2 ⅟16" 0.032 2⅜" 0.032
3 1 ⅟16" 3⅛" 0.062 3⅜" 0.062
4 1⅜" 4" 0.078 4⅜" 0.078
5 1¾" 5½" 0.078 6" 0.078
6 2⅛" 6⅝" 0.078 7¼" 0.103
7 3¼" 7½" 0.078 8" 0.13
8 3¼" 8¾" 0.078 9¼" 0.103
9 3¼" 10⅜" 0.103
10 3⅜" 10¾" 0.103 11½" 0.103
11 4¼" 11½" 0.103 12½" 0.103
12 5" 12½" 0.103 13⅝" 0.135
13 6" 13⅝" 0.135 14⅞" 0.135
14 5½" 14¾" 0.135 16" 0.18
16 5¾" 16¾" 0.18 18¼" 0.18
18 7¾" 19" 0.18 20¾" 0.18
20 5½" 20¼" 0.18 22" 0.18
22 7½" 22½" 0.18 24½" 0.18
24 9½" 24¾" 0.18 27" 0.18
26 11½" 27¼" 0.18 29½" 0.18
28 13½" 29½" 0.18 32" 0.18
30 15½" 31½" 0.18 34¼" 0.18
32 17½" 33½" 0.18 36" 0.18
34 19½" 35½" 0.18 38" 0.18
36 21½" 37½" 0.18 40" 0.18
38 23½" 39½" 0.18 42" 0.18
40 25½" 41½" 0.18 44" 0.18
42 27½" 43½" 0.18 46" 0.18
44 29½" 45½" 0.18 48" 0.18