Impeller Design Data

Our hope is that this will be a place to look-up mixing impeller types from many vendors. If you are a mixing vendor, a mixing rep, or a graphic artist and you would like to see your impeller photos or CAD drawings here, with links to your site, please email us and let us know. Also let us know if you see your impeller here, but you name it differently. Information about these impeller designs will also be added below each picture, if available, and referenced to the source of that data. Turbulent data is quoted here for fully baffled conditions, unless noted. There will be a link to another page if more data is available.

Without baffles, most impellers styles impose a tangential flow pattern. With baffles, most impellers show their true flow characteristics. Impellers are sorted here by the flow patterns they were intended to create, radial flow impellers and axial flow impellers. Click on any of these images for a larger picture. If you can’t find your impeller design here, see if it is stored under Special Impellers. Impeller design data includes impeller dimensions, number of blades, turbulent power number, turbulent flow number, and impeller synonyms. If you see a More Data link, click on it for flow pattern information and possibly non-turbulent power numbers (Np), flow numbers (Nq) and discharge angles as a function of Reynold’s Number (Re).

Radial Impellers

RT3 Rushton Turbine with 3 blades

Np=3.3, Nq=0.62* D/T=0.33, wB/T=1/12
Np=3.4, Nq=0.62* D/T=0.33, wB/T=0.1
More Data
Impellers courtesy of P. Csiszar

RT4 Rushton Turbine with 4 blades

Np=4.3, Nq=0.68* D/T=0.33, wB/T=1/12
Np=4.4, Nq=0.68* D/T=0.33, wB/T=0.1
More Data
Impellers courtesy of P. Csiszar

RT5 Rushton Turbine with 5 blades

Np=5.4, Nq=0.73* D/T=0.33, wB/T=1/12
Np=5.4, Nq=0.73* D/T=0.33, wB/T=0.1

More Data
Impellers courtesy of P. Csiszar

Chemineer D-6
Lightnin R100
Hayward Gordon RD

RT6 Rushton Turbine with 6 blades

Np=5.2, Nq=0.72
Np=6.0, D/T=0.33, wB/T=1/12
Np=6.0, D/T=0.33, wB/T=0.1

More Data
Impellers courtesy of P. Csiszar

RT8 Rushton Turbine with 8 blades

Np=7.8, Nq=0.82* D/T=0.33, wB/T=1/12
Np=7.8, Nq=0.82* D/T=0.33, wB/T=0.1

More Data
Impellers courtesy of P. Csiszar

RT12 Rushton Turbine with 12 blades

Np=9.9, Nq=0.89* D/T=0.33, wB/T=1/12
Np=10.0, Nq=0.90* D/T=0.33, wB/T=0.1

More Data
Impellers courtesy of P. Csiszar

RP2

Paddle with 2 blades

No disk (disc)

Impellers courtesy of P. Csiszar

RP4

Lightnin R200

Paddle with 4 blades

No disk (disc)
Np=3.4, Nq=0.62*

More Data
Impellers courtesy of P. Csiszar

RP6

Paddle with 6 blades

No disk (disc)

Impellers courtesy of P. Csiszar

Holmes & Narver pumper mixer

Lightnin R300

Np, Nq, and Nh-values

CFD study

Impellers courtesy of P. Csiszar

Curved bladed pumper

Lightnin R320
Philadelphia Mixers CBT-6

Pumper impeller used for solvent extraction mixer settlers

6-curved blades on one side of disk

CFD study

Impellers courtesy of P. Csiszar

RS6

Chemineer CD-6
Lightnin R130
Philadelphia Mixers Smith Turbine
Hayward Gordon RDC

Np=3.2, Nq=0.61*

More Data

Impellers courtesy of P. Csiszar

Lightnin R500

Np=0.45, Nq=0.32*

Impellers courtesy of P. Csiszar

Chemineer BT-6

Np=2.3, Nq=0.55*

More Data

Impellers courtesy of Chemineer

Bar turbine

Lightnin R510

Np=0.65, Nq=0.36*

Impellers courtesy of P. Csiszar

Axial Impellers

PR-D and PR-U Chemineer AP-3 Lightnin A100 and A110

Propeller – Down-pumping and Up-pumping
Np=0.32 for 1.0 pitch, D/T=0.35, wB/T=0.1
Np=0.36 for 1.0 pitch, D/T=0.22, wB/T=0.1
Np=0.62 for 1.5 pitch, D/T=0.22, wB/T=0.1
Np=1.00 for 2.0 pitch, D/T=0.31, wB/T=0.1
Np=1.35 for 2.5 pitch, D/T=0.22, wB/T=0.1
Note: Subtract 0.01 from Np for wB/T=1/12

More Data
Impellers courtesy of P. Csiszar

4PBT-D and 4PBT-U