As the name implies, the wrench is used to screw screws, while the electric wrench is a tool that uses the motor as the driving force to achieve high-efficiency work, and the electric torque wrench adds torque accuracy to the high-efficiency characteristics.

https://youtube.com/watch?v=kJlmBixitXc

So which is more important, efficiency or precision?

Accuracy is more focused on meeting requirements. Customers require ±5%. Of course, it is better for us to achieve accuracy of ±1%. The higher the efficiency, the better. There is no upper limit. Therefore, the accuracy meets the requirements, and the higher the efficiency, the better is our goal.

Since efficiency is the core characteristic, let’s talk about what makes an excellent electric torque wrench around efficiency.

The efficiency we are talking about here refers to the overall efficiency of the operator during the entire working process, so the following factors are summarized based on past experience: weight, speed, torque, and life.

Weight: At present, the lightweight of tools is very popular, and more and more workers realize the importance of lightweight, which can not only make them work longer, but also reduce labor injuries, especially for continuous high-intensity tools. For work, even a 100g difference is very noticeable.

Rotation speed: The rotation speed is the more turns per unit time, the faster the twist, but the premise is to meet the torque requirements.

Torque: A large enough torque margin can significantly improve work efficiency, just like a large horse-drawn cart naturally runs fast, and a wide enough torque range allows workers to flexibly deal with bolts of different specifications during work. One machine can be used for multiple purposes. It is easy to manage and use, which also has enough positive impact on the overall efficiency.

Lifespan: The impact of lifespan on efficiency is to reduce downtime due to failure. For workers, tool failure will not only disrupt the original work plan, but also take time and effort to repair. For the construction party, the cost of downtime is even more considerable. Equipment leasing, personnel wages, capital interest…every minute is money!To sum up, a good wrench should meet the “three highs and one low”, that is, high speed, high torque, long life and low weight. But it is not easy to achieve the above points, because these four points are interrelated and restrict each other. For example, light weight often leads to a reduction in lifespan; increasing the speed without changing the motor power will reduce the torque; increasing the motor power often It will increase the weight; under the premise of the same weight, the torque life will be reduced accordingly.

So if an electric torque wrench can meet these four points at the same time, it can be called an excellent wrench.

For example, the TN-18LP, an electric torque wrench newly developed by Hanpu in 2022, satisfies the above four characteristics at the same time, and significantly improves customer use efficiency. Compared with the TN-21LP of the same level as Hanpu, although the maximum torque is slightly lower, the torque range Greatly improved, the range of applicable bolts has been increased from the original two to four, greatly improved compatibility, the weight has been reduced from 6.6kg to 5.5kg, a full reduction of 1kg, and the speed has been increased from 6rpm to 10rmp, nearly doubled , In terms of life, it continues the high reliability of Hanpu in the past, and the number of consecutive uses can reach more than 100,000 times.

Model		TN-18LP	TN-21LP
Freq		50-60HZ	50-60HZ
Voltage		230V115V	230V115V
Max Current		8A16A	8A16A
Max Power Consumption		1800W	1800W
Torque Range		500-1800N.m	900-2100N.m
Ro Speed (min-1)		10rpm	6rpm
Weight (main body)		5.5KG	6.6KG
Protect Class		Double Insulation	Double Insulation
Adaptable Bolts Dia	S-10T	M27, M30 Initial tighteningM22,M24,M27 Final tightening	M27, M30
	A325		1-1/8″, 1-1/4″
	A490		1-1/8″, 1-1/4″

Shandong Hanpu Machinery Industry Co., Ltd. is an electric tool manufacturer integrating R&D, production and sales. The main products: electric torsional shear wrench, electric torque wrench, portable bolt torque detector, axial force torque meter, axial force meter After more than 20 years of innovation and development, the company now has an industrial park of 62 acres and a production and R&D workshop of 30,000 square meters, and has introduced a large number of processing equipment made in Switzerland, Germany, and Japan, becoming a large-scale electric wrench production base in China .