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 Applications
. Injection Moulding, Extrusion, Blow Moulding, Rubber Moulding
. Packaging, Test Equipment, Laboratory Equipment
. Vacuum Pumps, Shoe manufacturing Machinery
. Plastic Process Machinery, Food Process Machinery
Design
Ceramic Knuckle Heaters were developed to meet industry's demand for a long lasting, high temperature heater. Its construction consists of a helically wound resistance spiral, precisely stretched and strung through specifically designed refractory ceramic bricks. The build up of the ceramic brick provides a flexible heating mat, which when placed into a rolled outer metal casing and 4mm thick ceramic fibre insulation, provides an efficient high temperature, high watts density band heater.
Ceramic Knuckle Heaters are capable of reaching temperatures up to 650°C and with its unique flexible design, makes the Knuckle Heater a first choice with most European machinery manufacturers.
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Sheath Material |
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Insulation Material |
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Ceramic Insulators - High Temperature |
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Heat Saving Insulation |
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4mm thick fibre insulation |
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Spirals |
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NiCr |
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Standard Wall Thickness |
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12.5mm ( ½") |
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Gap |
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9.5mm ( 3/8) |
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Terminations |
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Threaded Terminals
Threaded Terminals with Terminal Box
Ceramic Block
Ceramic Block with Terminal Box
Low Profile Box with leads
Armour Braided Cable
Flexible Metallic Conduit
Glass Fibre Leads (double insulated)
2 Pin or 3 Pin plugs & Sockets |
Advantages and Options
Unlike all other types of band heaters Ceramic Knuckle Heaters heat by radiation. When used on Injection Moulding Machine barrels, Knuckle Heaters can be provided with a metal insulation jacket, with 12.5mm ceramic fibre insulation for energy savings of up to 25%, resulting in reduced power consumption, and cooler working conditions.
Used on Extruder barrels, Knuckle Heaters can be provided with a mesh style outer metal casing, leaving air gaps between the ceramic bricks to allow for air cooling, enabling critical extrusion temperatures to be maintained.
Complete units can be manufactured for extrusion machines with outer cowls, inlet and outlet air boxes together with high output blowers/fans.
Specific Application Heaters (Examples) |
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Insulated and guarded Ceramic Knuckle Heater |
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European Design Knuckle Heater |
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Special Knuckle Head Heater |
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