Agitator Blades & Shafts
Agitator blades for Three-One Motors come in three families: affordable press-formed general-purpose blades, handmade blades built for agitation efficiency, and the large 12 Series for the BLW's high torque. Choose from the quick selection chart below to match your liquid's viscosity and purpose.
*For pricing and quotations, please contact us.
Quick Selection Chart — by viscosity and purpose
| Liquid viscosity (guide) | Mix & circulate | Disperse / emulsify / dissolve(work requiring shear) | Avoid foaming |
|---|---|---|---|
| Up to 1,000 mPa·swater, juice, oil | Fan / Propeller Tombo (for narrow-neck flasks) |
Turbine / Disper | Soft Cross |
| Up to 10,000 mPa·ssyrup, shampoo | Square Cross / Pitched Paddle | Disc Turbine / Disper | Butterfly |
| Up to 50,000 mPa·shoney, sauce | Pitched Paddle (multi-stage) / 2- & 4-blade Pitched Paddles | Disper + circulating blade(above 30,000 mPa·s a disper cannot work alone; combine with a pitched paddle or anchor) | — |
| Higherpaste, cream | Anchor (12 Series) | Multi-shaft anchor + disper(custom order — please contact us) | — |
*Viscosity ranges and applications are guides based on our technical data; actual suitability depends on the liquid, vessel, and rotation speed. Two principles: to circulate, choose blades with strong discharge (propeller, pitched paddle); to break up finely, choose blades with strong shear (disper, disc turbine). Above 10,000 mPa·s, use a larger blade diameter (60% or more of the vessel diameter). See also the flow pattern diagrams at the bottom of this page.
Not sure? Start with Agitator Blade Set FS-7
For first-time Three-One Motor users we recommend this set of seven general-purpose blades plus a shaft. Trying each blade in your actual liquid is the surest way to find the right one. → See set contents
General-Purpose Agitator Blades — affordable, easy-to-use standards
Seven blade shapes, each in two mounting types — shaft-tip and boss-mounted (attachable at any position) — in SUS316, with titanium also available.
Shaft-tip type — secured with a nut at the shaft tip
HEIDON agitating shafts have a shouldered thread at the tip, and a nut is included. Shaft-tip blades have an oval hole: pass the shaft tip through it and secure with the nut.
The nut tightens easily with the included box driver, and because the hole is oval the blade cannot spin loose, ensuring reliable agitation.
Mounts at the shaft tip only. If you use a single blade, this simple, reliable type is the standard choice.
Boss-mounted type — attach anywhere on the shaft
The boss (cylindrical mount) has a set screw on its side; tighten it with the included L-wrench to fix the blade at any position on the shaft.
Since it mounts mid-shaft as well as at the tip, it allows multi-stage agitation with two stacked blades and free height adjustment to match the liquid depth.
Holding force is lower than the shaft-tip type. Choose this when you want multi-stage mounting or adjustable position.
Fan
The smallest blade. Ideal for mixing small volumes of 1 L or less quickly at high speed. A staple for beaker work.
Propeller (R / L)
Creates a strong discharge flow on the same principle as a ship's screw. For uniform mixing of low-viscosity liquids, keeping slurries from settling, and circulating large volumes. Available in R (right) and L (left) to match the rotation direction.
Square Cross (R / L)
An all-round blade usable across a wide viscosity range, from low to high speed. A single cross plate press-formed at 30° into one piece, it circulates the liquid vertically. Available in R (right) and L (left). If you buy just one blade, start here.
Soft Cross
For gentle agitation at low speed. Suited to formulations where air entrainment must be minimized and to shear-sensitive samples.
Butterfly
A disc-shaped blade that pushes the liquid through while suppressing surface waves and foaming. For low-speed blending.
Turbine
Generates a strong sideways radial flow. Used for circulating liquid in rectangular vessels and constant-temperature baths, and for efficient mixing at medium to high speed.
Tombo (folding blade)
A movable blade that folds closed at rest and opens as it rotates, so it can be inserted through narrow openings such as separable flasks.
Handmade Agitator Blades — built for agitation efficiency
Made of SUS316 in a range of sizes; welded and hand-formed to order.
Pitched Paddle
Six pitched blades create efficient vertical circulation with little power. For keeping slurries suspended, preventing sedimentation, and dispersing solid particles. For high viscosity, multi-stage use (two paddles stacked) is effective.
2-Blade / 4-Blade Pitched Paddles
A simple structure of flat plates set at an angle. Easy to make in large diameters, suited to circulating medium- to high-viscosity liquids.
Disc Turbine
A full turbine with vertical blades around a disc. The standard choice for work requiring shear: gas dispersion (absorption), dissolving solids, and liquid-liquid emulsification.
Curved Disc Turbine / Blade Turbine
A curved-blade type with modified discharge characteristics, and a blade type that discharges strongly downward from the disc. For gas dispersion and gas-liquid contact. *Both sold only while stocks last.
Disper
A dedicated dispersing blade whose saw-tooth edge generates strong shear. Usable over a wide viscosity range, it is the standard for pigment dispersion and rapid dissolving or deagglomeration of powders. Its pumping action is weak, however: above 30,000 mPa·s only the liquid around the blade moves, so it cannot be used alone — combine it with a circulating blade such as a pitched paddle or anchor (for ultra-high viscosity, ask us about a multi-shaft anchor + disper configuration).
4-Blade Propeller
A large propeller with four round blades, for more powerful circulation of large volumes.
12 Series — large blades for the BLW (made to order)
Agitator blades for the φ12 mm shaft that withstands the BLW's high torque. Large blades for high-viscosity, large-volume agitation, made to order. Please contact us for pricing and lead time.
 Anchor |
 Pitched Paddle (φ150 / φ200) |
 Disc Turbine |
 Disper |
 Paddle |
 Propeller |
 φ12 mm shaft |
For ultra-high viscosity the anchor is the basic choice. Also for wiping vessel walls and promoting heat transfer. |
Agitator Blade Sets — recommended for first-time users
If you are purchasing a Three-One Motor for the first time, we recommend buying an agitator blade set together with the unit.
| FS-7 7-item General-Purpose Set | Material: SUS316 Contents: Fan, Propeller R, Square Cross R, Turbine, Soft Cross, Square Cross R with boss, Soft Cross with boss, agitating shaft 500 mm, nut |
|---|---|
| FS-4 4-item General-Purpose Set | Material: SUS316 Contents: Fan, Propeller R, Square Cross R, Turbine, agitating shaft 500 mm, nut |
| FS-3T 3-item Titanium Set | Material: titanium Contents: Propeller R, Square Cross R, Turbine, agitating shaft 500 mm, nut |
Agitating Shafts — SUS316 and titanium
Available in five lengths from 500 mm to 1000 mm. *400 mm is also available in limited quantities. *Titanium: 500 mm only.
| SUS316 | L500 mm / L600 mm / L700 mm / L800 mm / L1000 mm |
|---|---|
| Titanium | L500 mm |
Flow Patterns — the flow each blade creates
Generally, select a blade diameter of about 1/3 to 1/2 of the tank diameter; when using an anchor blade or similar for high-viscosity agitation, the size will be close to the tank diameter. The optimum blade shape depends on the purpose: axial-flow blades such as propellers create a strong vertical circulation, while radial-flow blades such as turbines create flow toward the tank wall. Use the flow patterns below as a reference.
*Forward rotation. Blades from Agitator Blade Set FS-7 (with some exceptions).
Need help choosing a blade?
• For orders, quotations, or custom blades (size changes and special shapes), please contact us. Tell us your motor model, blade type, and size, and we will propose the best combination.
• See also the Three-One Motor selection guide and the full product lineup.