Please be informed that there will be no shipment from Japan during the upcoming year-end and New Year holiday period. However, Singapore’s stock items are available during these periods. More details.
Notice of End of Sales for Economy Series Pneumatic Equipment Category. More details.

Crimp Terminal Basics

The Relationship Between Cables, Crimp Terminals, and Crimp Tools
Crimping Procedure
Types of Crimp Tools

The Relationship Between Cables, Crimp Terminals, and Crimp Tools

(1) Select a terminal size that matches the cable size.

There are specific cable sizes with which general crimp terminals can be used.

Wire Conjugation Range of Terminals

Important Point

Cables can come loose under the conjugation range and snap over the conjugation range and cause accidents.

(2) Select a crimp tool.

The type of crimp tool differs depending on the type of terminal. Please use the correct tool.

**Terminals and the Correct Tools**
Terminal	Correct tool
Bare crimp terminal	Bare terminal tool
Insulated crimp terminal	Insulated terminal tool
Closed end connection terminal	Closed end connection terminal tool

Common Accidents

Crimping an insulated terminal using a covered crimp terminal tool. The insulator tore, exposed the metal part of the terminal, and caused a short circuit.

FAQ: Is it possible to simply use the insulated terminal sleeve?

Use a bare crimp terminal/bare crimp sleeve with a solid wire, and insulate using an insulation cap, insulation tube, or insulation taping, etc.
Common Accidents 1

See below for connections using closed end connection terminals. (Note: JIS C 2807:2003)

1. When crimping cables, ensure that the maximum wire diameter of both solid wires and stranded wires is 1 mm.
2. When crimping and connecting cables with different wire diameters, if the diameter of the wider cable exceeds 0.5 mm, in principle, the width of the narrower cable should be more than half the diameter of the wider cable.

Crimping Procedure

(1) Peel back the cable coating.

Following the user instructions for each type of terminal, peel back the coating on the cable terminal. The size of the coating will differ depending on the style and shape of the terminal.

**Coating size criteria: The wire must pass through the crimp part. The cable coating must not go inside the crimp part.**
Bare crimp terminal
Bare crimp P sleeve
Bare crimp B sleeve
Ring sleeve
Closed end connection terminal
Insulated terminal

End Cap (Insulation Cap for Ring Sleeve)

Simply cover the ring sleeve with an end cap for insulation.
Semi-transparent types enable users to confirm the quality of connection.
Outstanding safety (insulation performance).
A flexible cap that conforms with the revised RoHS Directive (four phthalic acid substances).

(2) Crimp

The cavities used to crimp are specified for each terminal size.

1. Determine the cavity used to crimp
2. With the silver solder at the top, crimp the terminal using the male die.
3. Temporarily place the terminal in the cavity and insert the cable.
4. Grip until the ratchet is released.	Do not remove the ratchet from the crimp tool. The ratchet is there to prevent insufficient crimping.

Important Point Crimping Insulated Terminals

Crimping cavities can crimp both the center and the coating part of the cable at the same time. Please ensure the terminal is facing the right direction.

*Remove this locator when crimping terminals that are not round or open-ended style, such as insulated sleeves.

Important Point　Crimping direction

The height and width of the two cavities are different, and so placing the terminal or sleeve in the wrong direction can lead to insufficient crimping of the cable, and in turn cause the cable to come loose.

Important Point Correct Crimp Position

Crimp the center of the pipe (where cable is inserted).

Covered crimp terminal/sleeve
Crimp cross-section	P sleeve (overlapping)	B sleeve (placed opposite)

Insulated terminal/sleeve
Crimp cross-section	Insulated crimp terminal P sleeve (overlapping)	Insulated B sleeve B sleeve (placed opposite)

(3) Post-crimping Visual Testing

Bare crimp terminal	Insulated coating crimp terminal	Decision

Types of Crimp Tools

For bare crimp terminals and sleeves

・NH1 395g/235mm
(Compatible terminal size: 1.25 to 8 mm²)

・NH69 250g/180mm
(Compatible terminal size: 0.3/0.5 to 2 mm²)

For ring sleeves

・NHE4 410g/240mm
(Compatible terminal size: E small/medium/large)

For insulated crimp terminals and sleeves

・NH32 450g/241mm
(Compatible terminal size: 0.3/0.5 to 2 mm²)

Closed end connection terminal

・NH38 430g/250mm
(Compatible terminal size: CE1/CE2/CE5/CE8)

*Please note that tool models are subject to remodel.

Large crimp terminals/Crimp terminals/T-shape connectors

Crimping of large terminals is undertaken using manual hydraulic tools, electric hydraulic tools, or crimp heads and hydraulic pumps.

Useful Info:Discovery and the History of Cable Connections

Initially, when connecting cables in internal wiring systems, the method used in each country was simply to connect the cables directly. Later, the cables were soldered and reinforced, and this method came to be widely used. From around 1925, a new method that didn’t rely on soldering was developed in Europe and the US, and gradually came to be used in other countries.
After World War II, the crimping connection method proliferated at a rapid pace, and today we rarely see the soldering method at all.

1835	Samuel Morse of the US invented the wired electrical telegraph. It was from around this time that large numbers of cables came to be connected.
1858	XXX Duboscq of France invented the world’s first practical arc lamp.
1876	Alexander Graham Bell of the US invented the telephone.
1879	Thomas Edison of the US invented the incandescent light bulb.
1882	The world’s first power distribution system was launched in New York.
1887	Japan’s first power distribution system was launched in Tokyo.