Backer Marathon Call Us Today 1-830-775-1417
  1. Home
  2. Support Center
  3. Options
  4. Hotrod Termination Options

Hotrod Termination Options

Backer Marathon offers a variety of terminations for use in almost any application.

Swaged In Leads

Swaged In Leads for Cartridge Heater
  • Swaged in leads are ideal for applications where there is a lot of movement or the leads must be bent sharp upon exiting the heater.
  • Please note that for heaters over 3" long there is a short unheated section where the leads connect to the power pins. 
  • Also remember that if the heater is inserted completely into the hole, the leads are exposed to the block temperature (maximum temperature for standard leads is 550°C, 1022°F). 
  • Unless otherwise specified, all heaters are supplied with swaged in leads. Standard lead wire type is Duraflex wire, rated to 550C. Other lead wire types are available.

Unheated Length at Lead End of Heater

Heater Length 1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 1"
Under 3" Long .20 .20 .25 .30 .39 .39 .61
Over 3" Long .81 .79 .84 .84 1.01 1.00 1.27

Crimped On Leads

Crimped on Leads for cartridge heater
  • Crimped on leads are generally used where the temperature at the end of the heater exceeds the maximum rated temperature of the lead wire. Since the connection between the leads and power pins is made outside the heater, the unheated length at the lead end of the heater is kept to a minimum.
  • Crimped on leads are not recommended for applications where the leads must be bent sharply near the heater, or in applications where the leads will be subject to a lot of flexing.
  • The high temperature connectors are covered by 1-1/2" of 2500 volt silicone rubber coated fiberglass sleeving.

Unheated Length at End of Heater

Heater Length 1/4" 5/16" 3/8" 1/2" 5/8" 3/4" 1"
Under 3" Long .20 .20 .25 .29 .54 .54 .74
Over 3" Long .20 .20 .25 .29 .54 .54 .81

Post Terminals

Cartridge Heater with Post Terminals
  • Post terminals (also called screw terminals or stud terminals are used in applications where easy lead replacement is desirable. They work great with ring terminals or fork terminals.
  • Post terminals are only available on 1/2" diameter heaters and larger.
  • Terminals are #6-32 and supplied with 2 stainless steel washers and 2 stainless steel nuts on each end. Other sizes are available.
Back to Top