What is a ratchet wrench

A ratchet wrench is a wrench with a ratchet mechanism. Since the head does not need to be re-fitted after each rotation, it can perform tightening and loosening operations at a higher speed than a regular wrench. Here we introduce the typical types of ratchet wrenches, their applications, and correct usage.

   

Types of ratchet wrench

Ratchet wrenches are used for quick tightening and loosening of nuts and bolts by the ratchet mechanism. Ratchet wrenches can be classified into several types according to their structures, and each type has different features and uses. Below are some of the most common types.

 

Single or double-ended ratchet wrench

This is the most common type of ratchet wrench. A single-sided ratchet wrench has one type of socket on one side of the head, while a double-sided ratchet wrench has two types of sockets on both sides. It is used for bolts and nuts in normal locations.

 

Single-ended ratchet wrench

片口ラチェットレンチ

Double ratchet wrench

両口ラチェットレンチ

Long socket ratchet wrench / Low profile ratchet wrench

Long socket ratchet wrenches have long sockets and are used to turn bolts and nuts in deep areas. On the contrary, low profile ratchet wrenches have short sockets. They are used for turning bolts and nuts in places where there is not enough room for height or in tight spaces.

 

Long socket ratchet wrench

ロングソケットラチェットレンチ

Low profile ratchet wrench

薄型ラチェットレンチ

Short type ratchet wrench

Short type ratchet wrench with short handle. Suitable for use in complicated places or in high places.

ショートタイプラチェットレンチ



Aluminum ratchet wrench

Aluminum ratchet wrench, lightweight and portable.

アルミラチェットレンチ

How to use a ratchet wrench

The ratchet wrench is a useful tool that can greatly improve work efficiency if you know how to use it. It is not difficult to use.

 

The main feature related to its use is the ratchet mechanism. The ratchet mechanism is a mechanism that limits forward and reverse rotation to one direction only, and is divided into "pin type" and "pawl type". Thanks to this ratchet mechanism, a ratchet wrench can perform continuous rotary movements when fastening and unfastening bolts and nuts without having to re-fit the head part. The ratchet mechanism has a knob for switching between tightening and loosening, which can be switched as needed.

 

Precautions for use

What precautions should be taken when using a ratchet wrench?

 

Use the appropriate size product

Use a product that matches the size of the bolt or nut and the size of the head of the ratchet wrench. If there is too much rattling when the head part is mated with the bolt or nut, work efficiency will be reduced.

 

Avoid using for other purposes

Do not insert the handle into the pipe and extend it to turn it with a large force, use it as a hammer, or use the one with a chisel for hole fitting in a messy way. Messy handling of ratchet wrenches may result in damage to the tool or injury to the operator.

 

Avoid slanting or shallow hanging

When turning a bolt or nut, insert it deeply into the head at an appropriate angle before turning it. Skewed or shallow hanging may cause distortion of the bolt or nut. Also, when using a ratchet wrench, the tool is moved at a high speed, so slanting or shallow hanging can cause the tool to come off unexpectedly.

 

Be careful when handling the switching knob

The knob that switches the direction of rotation should be switched firmly and securely. Also, be sure to always pay attention to the knob, as the direction may switch on its own due to the impact of the knob part hitting an object, etc.

 

Summary

The ratchet wrench is a useful tool that greatly helps to improve work efficiency. If used safely and in accordance with the correct usage, it will become an indispensable item for on-site work.