Ningbo Marshine Power Technology Co., Ltd.
Ningbo Marshine Power Technology Co., Ltd.
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How To Use A Crimping Tool For Coaxial Cable​

2025-12-25 0 Leave me a message

how to use a crimping tool for coaxial cable

You want to learn the correct method for crimping coaxial cables. We will show you the essential steps for a secure connection. Discover how to achieve reliable coaxial cable installations. With MARSHINE Crimping Tools, you can confidently create high-quality, durable connections every time.

Key Takeaways

  • Use the right tools for coaxial cable crimping. This includes a specific stripper, the correct crimping tool, and matching connectors to your cable type.
  • Prepare the cable carefully. Measure, cut, and strip the layers precisely. Inspect the stripped cable for any damage before attaching the connector.
  • Crimp the connector correctly. Choose the right crimping die, position the connector well, and apply the right pressure. Test the connection to avoid common mistakes.

Essential Tools for Coaxial Cable Crimping

Essential Tools for Coaxial Cable Crimping

Before you start crimping, gather the right tools. Having the correct equipment makes your job easier and ensures a strong, reliable connection.

Selecting a Coaxial Cable Stripper

You need a stripper made specifically for coaxial cables. A good stripper handles various cable diameters. Look for advanced strippers with multiple blades. These tools precisely expose the dielectric insulation, shielding, and conductor to the correct lengths. They often perform a three-step stripping process. You want one that can do 2-level and 3-level stripping on common types like RG58/RG59. Adjustable blades are also important. They help prevent cable damage. Some versatile strippers even cut and ring other cable types like Teflon or fiber.

Choosing the Right Coaxial Crimping Tool

Selecting the right crimping tool is crucial for a secure connection. Different jobs require different tools. For example, MARSHINE Crimping Tools offer a range of options.

You need a tool that matches your connector and cable type.

Matching Coaxial Connectors to Cable Types

You must match your coaxial connectors to your cable type. Coaxial cables come in different impedances. For example, 50 Ohm cables are great for commercial uses like radio systems and antennas. They handle high power. On the other hand, 75 Ohm cables are mostly for residential applications. Think TVs, internet, and home cell signal boosters. These offer more flexibility. Your connector must have the same impedance as your cable for the best performance.

Identifying Your Coaxial Cable

Knowing your coaxial cable type is very important. You can identify cables by their physical diameter and other markings. For instance, RG-6 is a common type for cable television signals. It has a 6.9mm outer diameter. RG-59 is thinner, with a 6.15mm outer diameter.

A bar chart showing the outside diameter in millimeters for various coaxial cable types, including RG-58, RG-59, RG-6, RG-62, RG-11, RG-12, and RG-213.

You can also look for shielding types. Some cables have single shielding, others have dual or quad shielding. Material markings like "PE" for Solid Polyethylene or "FE" for Foam Polyethylene also tell you about the cable's construction. The Radio Guide (RG) number also helps. A higher RG number means a thinner central conductor core.

Preparing and Connecting Your Coaxial Cable with MARSHINE Crimping Tools

Preparing and Connecting Your Coaxial Cable with MARSHINE Crimping Tools

Now that you have your tools ready, it's time to prepare your coaxial cable and attach the connector. This process needs precision for a strong, clear signal.

Measuring and Cutting the Coaxial Cable

First, you need to decide how long your cable should be. Measure the distance you need to cover. Then, cut the coaxial cable to that exact length. Use a sharp cable cutter to get a clean, straight cut. A clean cut prevents damage to the internal wires. This step is simple but important for a good start.

Stripping the Coaxial Cable Layers

Stripping the cable is where precision really matters. You need to remove specific layers without damaging the delicate inner parts. Here's how you do it:

  1. Slide the Crimp Sleeve: First, slide the crimp sleeve onto the cable. You will use this later to secure the connector body.
  2. Strip the Outer Jacket: Use your coaxial cable stripper to remove about 5/8 inch of the outer jacket. This reveals the braided shield underneath. Rotate the stripper twice to ensure a clean cut all around.
  3. Trim the Braided Shield: Fold back the metallic braided shield. Then, trim it carefully, leaving about 1/4 inch of the braid.
  4. Strip the Insulation: Next, remove 3/16 inch of the thermoplastic insulator from the copper conductor's end. This leaves about 7/16 inch of the jacket exposed.

Different connectors need slightly different stripping lengths. Here’s a general guide for common connector types:

Stripping Lengths F-Type Connectors RCA Connectors BNC Connectors
X 0.25" ~ 0.30" 0.17" ~ 0.18" 0.17" ~ 0.18"
Y 0.25" ~ 0.30" 0.25" ~ 0.30" 0.25" ~ 0.30"
Z 0.50" ~ 0.55" 0.50" ~ 0.55" 0.50" ~ 0.55"

Remember, these are general guidelines. Always check your specific connector's instructions for the most accurate stripping dimensions.

Inspecting the Stripped Cable

After stripping, you must inspect your cable carefully. This step helps you catch any issues before you crimp. Look for these signs:

  • No visible damage: Make sure there are no cuts, frayed ends, or bent wires.
  • Clean layers: The dielectric insulation, shielding, and conductor should be clean and undamaged.
  • No kinks or bends: The cable should not have any excessive bends or kinks near the stripped area. These can disrupt the internal structure.
  • No moisture: Ensure there is no moisture infiltration. Moisture can cause corrosion.

Damaged cables or poorly stripped ends can lead to signal loss or interference. You want a perfect strip for a perfect connection.

Attaching the Coaxial Connector

Now, you are ready to attach the connector. This is where your MARSHINE Crimping Tools come into play.

  1. Attach the Center Pin: Insert the loose center conductor into the pin's center hole. Use your ratcheting crimper from your MARSHINE Crimping Tools kit to crimp it twice. This ensures the pin is firmly fixed.
  2. Install the Connector Housing: Push the connector body onto the cable. Keep pushing until the center pin clicks into place. You should hear a small sound.
  3. Secure with the Ferrule: Push the ferrule towards the connector. Carefully manage the shielding and the barrel as you do this.
  4. Crimp the Ferrule: Crimp the ferrule twice. Crimp once right next to the connector. Then, crimp again next to the cable jacket. This secures everything tightly.
  5. Inspect the Connection: Check that the connector is evenly and securely attached. It should not be loose. If it doesn't look right, you should disconnect it and try again.
  6. Repeat on the Other End: Follow these same steps to install a connector on the other end of your cable.

Using MARSHINE Crimping Tools helps you achieve a professional and reliable connection every time.

Executing the Crimp and Ensuring Connection Quality

You have prepared your cable and attached the connector. Now, you need to execute the crimp. This final step secures your connection. It ensures signal quality and durability.

Selecting the Correct Crimping Die

Choosing the right crimping die is very important. It directly impacts your connection's quality. You need to identify the specific connector type you are using. Different connectors, like coaxial or insulated terminals, require unique dies. For coaxial connectors, you will use a coax-specific hex die. This die must match your cable type.

Always consult the manufacturer's datasheets. These sheets give you crucial information. They tell you about suitable dies, approved wire ranges, and compatible crimp tools. You must match the die to the wire size perfectly. Dies are marked with gauge ranges. This ensures compatibility. An incorrect size can lead to a loose or overly tight crimp. Also, check your crimp tool's compatibility. Not all dies fit every tool. Look at die dimensions, mounting style, and pressure rating.

Remember, even if connectors from different manufacturers look similar, they might need different crimp dies. Small detail variations can make a big difference. Always verify you use the correct crimp die for each cable and connector combination. This precise matching guarantees a secure and reliable crimp. It prevents issues like loose connections or wire damage.

Positioning the Connector in the Tool

Once you have the correct die, position your connector carefully. Open the jaws of your crimping tool. Place the connector, with the cable already inserted, into the appropriate slot on the die. The connector's ferrule should sit snugly in the die's cavity. Make sure the cable's center conductor aligns correctly. It should not be bent or off-center. Proper positioning prevents damage to the connector and ensures an even crimp.

Applying Pressure to Crimp the Connector

Now, you apply pressure to crimp the connector. This is a critical step for a secure connection. Applying the correct amount of pressure is crucial. Too little pressure results in a loose connection. Too much pressure can damage the wire or terminal. Many crimping tools, including MARSHINE Crimping Tools, are calibrated to ensure consistent pressure.

The ideal crimping pressure, also known as crimp force, tightly compacts the wire strands within the terminal. This eliminates air gaps. It creates a large contact surface area. This leads to optimal electrical conductivity and minimal resistance. You must ensure the wire is tight within the terminal. This creates secure crimp terminations. The crimp tab must form a strong mechanical bond with the wire. This prevents any looseness. It is a delicate balance. You want to achieve compaction without over-compressing. Over-compressing could damage the wire strands or the terminal.

Testing the Crimped Connection

After crimping, you need to test your connection. First, perform a visual inspection. Look for any signs of damage or an uneven crimp. The connector should look uniform and securely attached. Next, give the cable a gentle tug. The connector should not pull off or feel loose. This "pull test" confirms the mechanical strength of your crimp.

For a more thorough check, especially for critical applications, use a continuity tester or a cable certifier. These tools verify the electrical integrity of your connection. They ensure there are no shorts or open circuits. They also check for proper signal transmission.

Avoiding Common Crimping Mistakes

Many coaxial cable performance issues come from errors during initial installation. Approximately 40% of all coaxial cable performance issues stem from these mistakes. These flaws compromise system integrity, longevity, and signal quality. They lead to rapid degradation within 12-18 months. You might experience intermittent dropouts, slow internet speeds, or pixelated video. The financial impact is significant. A technician dispatch can cost $90-$125.

Here are some common mistakes you should avoid:

  • Under-tightening: This is a very common error. It leads to a loose fitting. This often requires a service call to fix.
  • Improper connector installation: Using your hands or pliers instead of a proper crimping tool creates a weak connection. It loosens over time due to temperature changes. This causes impedance mismatch and moisture ingress. Moisture corrodes the copper shield, increasing resistance.
  • Using cheap crimp-on connectors: These connectors are more prone to vibration loosening and corrosion. They often fail much faster than quality compression connectors.
  • Bending an RG-6 cable too tightly: Bending it tighter than its 2-inch (5 cm) specification permanently crushes the dielectric foam. This alters impedance and increases signal loss.
  • Incorrect grounding: Omitting a proper ground block or using the wrong gauge wire leaves your system vulnerable to power surges. It also increases susceptibility to RF interference.
  • Using the wrong cable type outdoors: For example, using CM-rated cable outdoors causes the jacket to crack. Temperature swings and UV radiation allow moisture to wick in.
  • Over-tightening connectors with a wrench: This can crack the dielectric insulator inside the equipment port. It creates a permanent short circuit. This often requires replacing expensive equipment.

By avoiding these common errors, you ensure a high-quality, durable, and reliable coaxial cable installation.


You now master coaxial cable crimping. This lets you create reliable connections. Apply these proper techniques for durable and effective cable assemblies. You can confidently build high-quality coaxial installations. You will achieve excellent signal quality and lasting performance every time. Go ahead and connect with confidence!

FAQ

Why is matching the crimping die so important?

You must match the die to your connector and cable size. This ensures a secure, reliable connection. An incorrect die causes loose or damaged crimps, leading to signal loss.

What happens if you don't test your crimped connection?

You risk poor signal quality or connection failure. Testing confirms your crimp is strong and electrically sound. It prevents future headaches and costly repairs.

Can you use any crimping tool for any coaxial cable?

No, you cannot. You need a tool and die that match your specific connector and cable type. Using the wrong tool creates weak, unreliable connections.

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