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Blade Selections

Blade selection is based on many factors including compatibility with the heat exchanger tube material, product fluid characteristics, processing temperatures, and cost. Metal blades provide the best scraping properties, which means theoretically better heat transfer. However, metal blades are usually the most expensive, must run on a hard chrome surface and must be properly sharpened to avoid damaging the heat transfer tube. Today, with the development of new high temperature and FDA compliant plastic materials, there are alternatives to metal blades. The blade options below provides a wide range of our most popular blades. Many other options are also available.



Icon - PDF - SmallDownload complete Scraped Surface Heat Exchanger Selection Guide - SSHEP-001



6 inch Blades

Material: 410 Stainless Steel
Part Number: LL900127
Cost: $$
Temperature Limitations: None
Product Applications: All processes High Viscosity (meat/fondant/ice crystallization)
Comments:

- Hard metal
- Moderate corrosion resistance
- Sharpening cost high
- Possible tube wear



Material: 17-7 Stainless Steel
Part Number: LL900124
Cost: $$$$
Temperature Limitations: None
Product Applications: All processes High Viscosity (meat/fondant)
Comments:

- Soft metal
- Corrosion resistance
- Sharpening cost high
- Possible tube wear



Material: 410 Stainless Steel Cutaway Style
Part Number: LL125801
Cost: $$$$
Temperature Limitations: None
Product Applications: All processes High Viscosity (meat/fondant)
Comments:

- Hard metal
- Moderate corrosion resistance
- Sharpening cost high
- Reduced power consumption and product accumulation



Material: Brass Cutaway Style
Part Number: LL918089
Cost: $$$
Temperature Limitations: None
Product Applications: Pet Food and Inedible Processes
Comments:

- Soft metal with reduced power consumption and product accumulation



Material: Celcon
Part Number: LL900129
Cost: $
Temperature Limitations: 160° F (71° C)
Product Applications: Low viscosity, fats and oils cooling (margarine/shortening)
Comments:

- Molded plastic
- Low strength values



Material: PEEK
Part Number: LL118683
Cost: $$
Temperature Limitations: 320° F (177° C)
Product Applications: Medium to high viscosity, most products
Comments:

- Molded plastic, high tensile strength and elongation



Material: MD PEEK
Part Number: LL118683MD
Cost: $$$
Temperature Limitations: 320° F (177° C)
Product Applications: Medium to high viscosity, most products
Comments:

- Molded plastic, high tensile strength and elongation
- Metal detectable molded plastic



Material: PEEK with Locking Holes
Part Number: LL121856
Cost: $$$
Temperature Limitations: 320° F (177° C)
Product Applications: High viscosity, gelatin cooling
Comments:

- Relief holes provide lower tip pressure and current amperage
- Molded plastic, high tensile strength and elongation



Material: 410 Stainless Steel with Locking Holes
Part Number: 137467+
Cost: $$$
Temperature Limitations: None
Product Applications: High viscosity, caulk and plastics cooling
Comments:

- Hard metal
- Relief holes provide lower tip pressure and current amperage
- High sharpening cost



7.5 inch Blades

Material: Celcon
Part Number: LL900748
Cost: $$
Temperature Limitations: 160° F (71° C)
Product Applications: Low to medium viscosity, fats and oils cooling
Comments:

- Machined from stock
- Low strength value



Material: LD PEEK/PTFE
Part Number: K7000-7243
Cost: $$
Temperature Limitations: 302° F (150° C)
Product Applications: Low to medium viscosity, sauces, purees, and dressings
Comments:

- Molded plastic
- Low friction values



13.75 and 24 inch Blades

Material: 4x120 PEEK
Part Number: LL119712
Cost: $$
Temperature Limitations: 320° F (177° C)
Product Applications: Medium viscosity, sauces, purees and dressings
Comments:

- Molded plastic, high tensile strength and elongation
- Special “knuckles” for blade positioning



Material: Votator II Thermutator Delrin
Part Numbers: 

- 128675+
- 128675M1
- 128675M2
Cost: $$$
Temperature Limitations: 160° F (71° C)
Product Applications: Medium viscosity, heat sensitive products or fouling characteristics
Comments:

- 5.25" (133mm) shaft design
- Low strength values
- Low friction properties
- Machined blade



Material: Votator II Thermutator MD
Part Numbers: 

- 135144MD
- 135144MD1
- 135144MD2
Cost: $$$$$
Temperature Limitations: 160° F (71° C)
Product Applications: Medium viscosity, heat sensitive products or fouling characteristics
Comments:

- 5.25" (133mm) shaft design
- Low strength values
- Low friction properties
- Metal detectable
- Machined blade



Material: Votator II Thermutator 410 Stainless Steel
Part Numbers: 

- LL926752
- LL926752M1
- LL926752M2
- 133029+
Cost: $$$$$
Temperature Limitations: None
Product Applications: Medium to high viscosity, heat sensitive and abrasive products, licorice, cheese sauce, pudding, and banana puree
Comments:

- Hard metal
- 5.25" (133mm) shaft design
- Corrosion resistant
- High sharpening cost