Prayosha Ind Tech has designed its ceramic band heaters to meet the demands for all type of plastic processing machinery. These heaters are capable of very efficient heat transfer by radiation, conduction and convention. Built-in insulation minimizes unwanted temperature changes along the barrel.
Other types of band heaters are primarily conductive, requiring an intimate fit with components being heated. Grooves or other surface irregularities from voids under the bands, resulting in hot spots and premature heater failure. Ceramic bands are recommended here because efficient heat
transfer is not affected by irregular surface or loose fit. At higher watt densities they can be used in wider increments than other heaters. This means you can reduce the number of bands used and simply wiring.
Features
1) Available in SS Sheathing with Power Saving Options.
2) Save Energy with Improved Heating Efficiency.
3) Upto 40 Watts per square inch.
4) Special High Grade Steatite Insulators for Superior Thermal Conductivity.
5) Designed for Higher Temperature Up to 650ºC.
6) Efficient Heat Transfer in comparison to Mica Band heaters.
7) Available in Various Lead Terminations & Clamping.
Applications
1) Plastic processing Machinery
2) Injection and Blow Molding.
3) Extruders.
4) Many other Applications.
Technical specifications
| Sheath material |
Stainless Steel 304 |
| Insulator |
High quality ceramic steatite |
| Heating element |
NiCr 80 : 20 |
| Heat saving Insulation |
Ceramic Fibre |
| Connection leads |
Fibre Glass Metal Braided Cable |
| Voltage |
110 to 440 volts |
| Surface Load |
Upto 40 w / In2 |
| Power tolerance |
+ / - 10% |
| Resistance |
+ / - 10 % |
| Insulation resistance (Cold) |
< 20 M Ohms |
| Clamping gap |
8 to 10 mm |
| Sheath temperature |
Upto 650ºC |
Prayosha Ceramic Band Jackated Heaters have ceramic band heater with 15mm or 25mm thick Ceramic fibre insulation blanket. These heaters are designed for higher operating temperatures with maximum energy conservation. Heaters with various terminal options are also available.
Features
1) Available in SS Sheathing with Extra Power Saving Options.
2) Save Energy upto 25 % with Improved Heating Efficiency
3) Upto 40 Watts per square inch
4) Special High Grade Steatite Insulators for Superior Thermal Conductivity
5) Designed for Higher Temperature Up to 650ºC.
6) Efficient Heat Transfer in comparison to Mica Band heaters.
7) Available in Various Lead Terminations & Clamping
8) 15 mm or 25 mm thick ceramic fibre insulation blanket
Applications
1) Blow Molding Machines
2) Injection Molding Machines
3) Extruders
4) Blow Film Dies and Various cylindrical applications
Technical specifications
| Sheath material |
Stainless Steel 304 |
| Insulator |
High quality ceramic steatite |
| Heating element |
NiCr 80 : 20 |
| Heat saving Insulation |
Ceramic Fibre ( 15 mm or 25 mm ) |
| Connection leads |
Fibre Glass Metal Braided Cable |
| Voltage |
110 to 440 volts |
| Surface Load |
Upto 40 w / In2 |
| Power tolerance |
+ / - 10% |
| Resistance |
+ / - 10 % |
| Clamping gap |
8 to 10 mm |
| Sheath temperature |
Upto 650ºC |
Prayosha's Mica Band heaters are available with or without outer heat saving insulation covers. We make these heaters in S.S, Brass, MS, materials depending upon applications and requirement of actual users. Specially selected mica or micanite sheets and A specific gauge nickel-chrome resistance ribbon wire is used.
Technical specifications
| Sheath material |
Stainless Steel 304 / Brass / M S Galvanised |
| Insulatation material |
Mica & Micatile Sheet |
| Heating element |
NiCr 80 : 20 |
| Connection leads |
Fibre Glass Metal Braided Cable |
| Voltage |
110 to 440 volts |
| Surface Load |
Upto 30 w / In2 |
| Power tolerance |
+ / - 10% |
| Resistance |
+ / - 10 % |
| Insulation resistance (Cold) |
20 M Ohms |
| Clamping gap |
8 to 10 mm |
| Sheath temperature |
Upto 400ºC |
Applications
1) Plastic processing Machinery
2) Injection and Blow Molding
3) Extruders
4) Many other Applications
Prayosha's High Density Cartridge Heaters are design for longer life through superior manufacturing process. Heating coil is wound around a ceramic core and isolated from the outer sheath through high purity MgO for high degree of thermal conduction.
Technical Specifications
| Outer Sheath material |
Stainless Steel 304 |
| Insulator |
High quality MgO core |
| Heating element |
NiCr 80 : 20 |
| Connection leads |
Fibre Glass Metal Braided Cable / PFTE leads |
| Voltage |
110 to 440 volts |
| Surface Load |
Upto 40w / cm2. |
| Sheath temperature |
Upto 750ºC |
Diameters Specifications
| Diameter |
1/4 " |
5/16 " |
3/8 " |
1/2 " |
5/8 " |
3/4 " |
6.5 |
8 |
10 |
12.5 |
16 |
19 |
| Min. length |
2 " |
2 " |
2 " |
3 " |
3 " |
4 " |
50 |
50 |
50 |
75 |
75 |
100 |
| Max. length |
6 " |
6 " |
8 " |
15 " |
21 " |
21 " |
6 " |
6 " |
8 " |
15 " |
21 " |
21 " |
| Min. Watts |
100 |
125 |
125 |
150 |
200 |
300 |
100 |
125 |
125 |
150 |
200 |
300 |
| Max. Watts |
300 |
400 |
600 |
800 |
1000 |
1500 |
300 |
400 |
600 |
800 |
1000 |
1500 |
| Wire / mm2 |
0.5 |
0.75 |
0.75 |
1 |
1.5 |
2.5 |
0.5 |
0.75 |
0.75 |
1 |
1.5 |
2.5 |
| Amp load |
4 |
6 |
6 |
8 |
12 |
18 |
4 |
6 |
6 |
8 |
12 |
18 |
Prayosha?s Coil heaters are Superior Quality Coil Heaters design with inbuilt thermocouple. These heaters stand out due to their high performance, guaranteed quality and best services. These small diameter, high performance coil heaters are designed for individual application and manufactured for optimum performance. These heaters are fully annealed and bent to your desire configuration.
Features
1) High Performance
2) Fully Annealed
3) Can be formed in various shapes and sizes.
4) Inbuilt Thermocouples
5) Various Cross sections and Terminals.
6) Various Terminals such as Radial, Tangential and Axial
Applications
1) Hot Runner Moulds
2) Hot Sprue Bush
3) Hot Tips
4) Packaging Industries
Technical specifications
| Sheath material |
Stainless Steel 304 |
| Insulatation material |
High quality MgO |
| Heating element |
NiCr 80 : 20 |
| Connection leads |
Nickle wire with PTFE Coating Cable |
| Voltage |
110 to 440 volts |
| Surface Load |
Upto 30 w / In2 |
| Power tolerance |
+ / - 10% |
| Thermocouples |
'J' type , 'K' type. |
| Insulation resistance |
> 5 MW |
| Length Tolerance |
+ / - 2% |
| Sheath temperature |
700 deg. |
Dimentional Specifications
| Size |
3.3 |
3.8 |
3.3x3.3 |
1.8x3.2 |
2.2x4.2 |
2.5x4.3 |
4x6.4 |
| Cross Sections |
 |
|
 |
|
 |
|
|
| Max. Length |
2000 |
3000 |
3000 |
2000 |
3000 |
2000 |
3000 |
| Adapter Diameter |
8 |
8 |
8 |
8 |
8 |
8 |
10 |
| Adapter Length |
30 |
30 |
30 |
30 |
30 |
30 |
40 |
| Min. Diameter |
8 |
8 |
8 |
8 |
8 |
8 |
19 |
| Cold Zone |
3.3 |
3.8 |
3.8 |
3.3 |
3.3 |
3.8 |
6 |
Micro Tubular Coil Heaters are manufactured in two standard diameters, 1.5 mm and 1.8 mm ( 0.059?? & 0.07?? ). These heaters are swaged and compacted to these diameters and fitted into special clamps to tighten over circular parts for heating purpose. Micro Tubular Coil Heater?s Hermetically sealed construction prevents moisture from entering the better results for long life.
Features
1) Cam operated Axial Clamp
2) Standard Radial Clamp
3) Hermetically Sealed Construction
4) 1 meter PTFE leads
5) 149 Watts & 268 Watts capacity
Technical Specifications
| Sheath Material |
Stainless Steel 304 |
| Insulator |
High Purity MgO |
| Heating Element |
NiCr 80 : 20 |
| Cross Sections |
1.5 mm, 1.8 mm, 1.3 x 2.3 mm |
| Connection Leads |
Standard PTFE coated Nickle Wire |
| Voltage |
Max. 250 Volts |
| Surface Load |
Upto 40 w / In2 |
| Sheath Temperature |
Upto 400ºC |
| Power Tolerance |
+ / - 10% |
| Power Rating |
Depending upon application |
| Insulation resistance |
< 5 M Ohms |
| Min Bending Diameter |
6 mm |
| Sheath Temperature |
Upto 750ºC |
Manifold Tubular Heaters are custom formed in a wide range of shapes as per customer?s requirements. Incoloy or stainless steel sheaths are used as outer material. High purity MgO ensures superior heat transfer.
Technical specifications
| Sheath material |
Stainless Steel 304 / Incoloy tubes |
| Insulator |
High Purity MgO |
| Heating element |
NiCr 80 : 20 |
| Standard Diameters |
6.6 mm, 8.00 mm, 10.00 mm |
| Leangth |
300 ? 1000 mm, 300 ? 3000 mm, 300 ? 3000 mm |
| Voltage |
< 230 v, < 400 v, < 400 v |
| Surface Load |
Upto 45 w / In2 |
| Power tolerance |
+ / - 10% |
| Colt Section |
38 mm ( 1.5 inches ) Standard |
| Length Tolerance |
+ / - 1% |
| Terminal Pins |
M 3 x .50 m, M 4 x .70 mm |
| Sheath temperature |
Upto 650ºC |
Thermocouple is a thermoelectric temperature sensor which consist of two dissimilar wires.They are less suitable for applications where smaller temperature differences need to be measured with high accuracy
We are manufacturer of various types of thermocouples viz.
'J' type, 'K' type and RTD's in different sizes and shapes as
Pencil type, Bayonet type, Bolt type or Washer type per customer requirements.
Our manifold layouts are engineered for even distribution of heat. Their naturally balanced flow channels provide uniform filling of individual cavities. The highly polished melt channels ensure that minimal material is trapped in the flow path.
The nozzles are standardized & designed for interchangeability. The nozzle tips are provided with abrasion resistant coatings to enhance their life.
