JR Reactor Stir Props - Various Models and Sizes

Engineered for JR5–JR100 jacketed reactors, these precision stir props deliver reliable mixing for extraction, crystallization, winterization, and general laboratory/process applications. Choose from Standard Foldable, Mixing (MP), and Axial impellers with optional Radial secondary blades for enhanced flow and shear control.
Each model is built around a balanced stainless shaft Coated with PTFE (8–15 mm) with optimized blade geometry and diameters matched to vessel size. Extended shaft lengths maintain stability at operating speeds while minimizing vortexing and dead zones for faster, more uniform results.
From benchtop JR5 to production JR100 reactors, the lineup covers common viscosities and process goals — gentle axial circulation, medium-shear blending, or aggressive multi-blade configurations for solids suspension.

Verify shaft diameter and impeller clearance with your vessel baffles and thermowells before purchase. Need a custom diameter or blade set?
JR5–JR100 Compatible Axial / Mixing / Foldable Optional Radial Add-Ons Stainless Shafts 8–15 mm
Optimized flow: Axial, mixing, and foldable geometries move product efficiently and reduce dead zones.
Scale matched: Diameters and shaft lengths tuned for JR5, JR10, JR20, JR50, and JR100 reactors.
Upgradeable: Add single or dual radial blades on select models for extra shear and top-to-bottom turnover.
Stir Prop Sizing Guide JR Reactor Setup Maintenance Checklist End-Use Certification
Why these JR stir props?

Process-driven geometry — axial blades for circulation, MP blades for blend/shear, foldable for clearance and easy insertion.
Right size for your vessel — matched diameters and widths reduce cavitation and speed time-to-spec.
Upgradeable blade stacks — select models add one or two radial blades for improved suspension and top turnover.
Durable construction — stainless shafts (8–15 mm) in lengths up to 1210 mm for stable operation.
Complete JR coverage — options for JR5, JR10, JR20, JR50, and JR100 reactor platforms.
Technical Specifications
SKU
Item Name
Shaft Diameter
Shaft Length
Main Impeller Diameter
Blade Angle
Blade Width
2nd Impeller Diameter
2nd Impeller Blade Width
JR100SP-A-FOLD
JR100 Standard Stir Prop
15mm
1210mm
10.5"
/
1.5"
/
/
JR100SP-B-MP
JR100 Mixing Stir Prop
15mm
1210mm
9"
35°
4.5"
/
/
JR100SP-C-AXIAL
JR100 Axial Stir Prop
15mm
1210mm
8.25"
65°
1.7"
/
/
JR100SP-D-FOLD-RAD
JR100 Foldable Stir Prop with Radial Blade Above
15mm
1210mm
10.5"
/
1.5"
6"
1.4"
JR100SP-E-AXIAL-RAD
JR100 Axial Stir Prop with Radial Blade Above
15mm
1210mm
8.25"
65°
1.7"
6"
1.4"
JR100SP-F-AXIAL-2XRAD
JR100 Axial Stir Prop with Radial Blade Above
15mm
1210mm
8.25"
65°
1.7"
6"
1.4"
JR50SP-A-FOLD
JR50 Standard Stir Prop
15mm
1060mm
8"
/
1.5"
/
/
JR50SP-B-MP
JR50 Mixing Stir Prop
15mm
1060mm
6.5"
35°
3.25"
/
/
JR50SP-C-AXIAL
JR50 Axial Stir Prop
15mm
1060mm
6.75"
60°
1.75"
/
/
JR50SP-D-FOLD-RAD
JR50 Foldable Stir Prop with Radial Blade Above
15mm
1060mm
8"
/
1.5"
5"
1.4"
JR50SP-E-AXIAL-RAD
JR50 Axial Stir Prop with Radial Blade Above
15mm
1060mm
6.75"
60°
1.75"
5"
1.4"
JR50SP-F-AXIAL-2XRAD
JR50 Axial Stir Prop with Dual Radial Blade Above
15mm
1060mm
6.75"
60°
1.75"
5"
1.4"
JR20SP-A-FOLD
JR20 Standard Stir Prop
15mm
860mm
6.75"
/
1.2"
/
/
JR20SP-B-MP
JR20 Mixing Stir Prop
15mm
860mm
6"
35°
3"
/
/
JR20SP-C-AXIAL
JR20 Axial Stir Prop
15mm
860mm
6.75"
60°
1.75"
/
/
JR20SP-D-FOLD-RAD
JR20 Foldable Stir Prop with Radial Blade Above
15mm
860mm
6.75"
/
1.2"
5"
1.4"
JR20SP-E-AXIAL-RAD
JR20 Axial Stir Prop with Radial Blade Above
15mm
860mm
6.75"
60°
1.75"
5"
1.4"
JR20SP-F-AXIAL-2XRAD
JR20 Axial Stir Prop with Dual Radial Blade Above
15mm
860mm
6.75"
60°
1.75"
5"
1.4"
JR10SP-A-FOLD
JR10 Standard Stir Prop
15mm
755mm
6.75"
/
1.2"
/
/
JR10SP-B-MP
JR10 Mixing Stir Prop
15mm
755mm
5.5"
35°
2.75"
/
/
JR10SP-C-AXIAL
JR10 Axial Stir Prop
15mm
755mm
6.75"
60°
1.75"
/
/
JR10SP-D-FOLD-RAD
JR10 Foldable Stir Prop with Radial Blade Above
15mm
755mm
6.75"
/
1.2"
5"
1.4"
JR10SP-E-AXIAL-RAD
JR10 Axial Stir Prop with Radial Blade Above
15mm
755mm
6.75"
60°
1.75"
5"
1.4"
JR5SP-A-FOLD
JR5 Standard Stir Prop
8mm
635mm
4.5"
/
1"
/
/
JR5SP-B-MP
JR5 Mixing Stir Prop
8mm
635mm
4"
35°
2"
/
/
JR5SP-C-AXIAL
JR5 Axial Stir Prop
8mm
635mm
4"
50°
1.5"
/
/
FAQ

Which blade style should I choose?

Axial maximizes top-to-bottom circulation with moderate shear; Mixing (MP) provides stronger blending and dispersion; Foldable eases insertion through narrow lids and improves clearance while still moving fluid efficiently.
How do I size the impeller to my reactor?

Use the JR model match (JR5–JR100) and verify shaft diameter (8–15 mm), shaft length, and impeller diameter against vessel baffles/thermowells. For viscous media, select models with larger blade width or add radial blades.
What do the radial add-on blades do?

Single or dual radial blades increase shear and improve solids suspension, cutting blend times and reducing stratification in taller vessels.
Are these compatible with non- reactors?

Yes, provided the shaft diameter/length and impeller clearance match your vessel hardware.