Step by Step Crimping on RJ45

10.22 Heru Joherujo 0 Comments

This post originally from wikihow on How to Crimping RJ45.
RJ-45 connectors are normally used in telephone and network cables. Occasionally they are used for serial network connections. When the RJ-45 connectors first came into use, they were primarily used for telephones. The great advances in technology created a need for another size connector and the RJ-45 was adapted to fit. Today there are 2 different RJ-45 connector sizes available, 1 for Cat 5 cable and 1 for Cat 6 cable. The user has to make sure they have the one suited to their job. The easiest way to tell them apart is to compare them side by side. The Cat 6 connector is larger than the Cat 5 connector. Below are instructions for crimping RJ-45 connectors to a cable.

  1. Crimp Rj45 Step 1 Version 2.jpg
    Purchase your cable and your RJ-45 connectors. Most ethernet cable is sold on spools of varying lengths, so you might have to measure and cut the amount you need when you get home.
  2. Crimp Rj45 Step 2 Version 2.jpg
    Strip 1 to 2 inches (2.5 to 5.1 cm) of the outer skin at the end of the cable wire by making a shallow cut in the skin with a utility knife. Run the knife around the cable, and the jacket should slide off easily. There will be 4 pairs of twisted wires exposed, each of them a different color or color combination.
    • Orange-white striped and solid orange
      Crimp Rj45 Step 2Bullet1 Version 2.jpg
    • Green-white striped and solid green
      Crimp Rj45 Step 2Bullet2 Version 2.jpg
    • Blue-white striped and solid blue
      Crimp Rj45 Step 2Bullet3 Version 2.jpg
    • Brown-white striped and solid brown
      Crimp Rj45 Step 2Bullet4 Version 2.jpg
  3. Crimp Rj45 Step 3 Version 2.jpg
    Fold each pair of wires backwards to expose the core of the cable.
  4. Crimp Rj45 Step 4 Version 2.jpg
    Cut off the core and discard.
  5. Crimp Rj45 Step 5 Version 2.jpg
    Straighten the twisted wires using 2 pair of tweezers. Grasp a wire beneath a bend with 1 pair of tweezers, and use the other pair to gently straighten the bend. The straighter your wires, the easier your job will be.
  6. Crimp Rj45 Step 6 Version 2.jpg
    Arrange the untwisted wires in a row, placing them into the position, running from right to left, in which they will go into the RJ-45 connector:
    • Orange with a white stripe
      Crimp Rj45 Step 6Bullet1 Version 2.jpg
    • Orange
      Crimp Rj45 Step 6Bullet2 Version 2.jpg
    • Green with a white stripe
      Crimp Rj45 Step 6Bullet3 Version 2.jpg
    • Blue
      Crimp Rj45 Step 6Bullet4 Version 2.jpg
    • Blue with a white strip
      Crimp Rj45 Step 6Bullet5 Version 2.jpg
    • Green
      Crimp Rj45 Step 6Bullet6 Version 2.jpg
    • Brown with a white stripe
      Crimp Rj45 Step 6Bullet7 Version 2.jpg
    • Brown
      Crimp Rj45 Step 6Bullet8 Version 2.jpg
  7. Crimp Rj45 Step 7 Version 2.jpg
    Trim the untwisted wires to a suitable length by holding the RJ-45 connector next to the wires. The insulation on the cable should be just inside the bottom of the RJ-45 connector. The wires should be trimmed so that they line up evenly with the top of the RJ-45 connector.
    • Trim the wires in small increments, checking frequently to ensure a correct fit. It's better to cut the untwisted wires a few times than have to go back and start all over again because you trimmed off too much.
      Crimp Rj45 Step 7Bullet1 Version 2.jpg
  8. Crimp Rj45 Step 8 Version 2.jpg
    Insert the wires into the RJ-45 connector, making sure that they stay aligned and each color goes into its appropriate channel. Make sure that each wire goes all the way to the top of the RJ-45 connector. If you don't make these checks, you will find that your newly crimped RJ-45 connector is useless.
  9. Crimp Rj45 Step 9 Version 2.jpg
    Use the crimping tool to crimp the RJ-45 connector to the cable by pressing the jacket and cable into the connector so that the wedge at the bottom of the connector is pressed into the jacket. Recrimp the cable once more to ensure proper connection.
  10. Crimp Rj45 Step 10 Version 2.jpg
    Follow the instructions above to crimp an RJ-45 connector to the opposite end of the cable.
  11. Crimp Rj45 Step 11 Version 2.jpg
    Use a cable tester to assure that your cable is working properly when both ends are crimped.

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