GEDORE Torque Screwdrivers
Controlled and reproducible transmission of small torques
The smaller a screw connection is, the more important it is to apply force in a controlled manner. Excessive torque can stress components, threads, or fasteners, while insufficient tightening can compromise the connection’s intended function. Torque screwdrivers allow you to adjust screw tightening to a defined torque range.
In slip-through designs, torque transmission is limited once the set torque is reached. The mechanism slips noticeably, thereby preventing unintentional over-tightening. This operating principle is particularly well-suited for repetitive fastening operations where a specified value must be consistently maintained.
The GEDORE product range includes torque screwdrivers for various torque ranges and requirements. These include, among others, the QSN, QUICKSET, and TLS series, as well as special ESD and cleanroom models.
Fixed setting or adjustable torque value
A key selection criterion is whether an application requires working with the same torque value continuously or whether different values are needed. Fixed-torque screwdrivers are designed for recurring fastening processes with a consistent torque setting. Depending on the model, the setting can be adjusted at the factory or using suitable testing equipment.
Adjustable torque screwdrivers, on the other hand, allow the torque value to be adapted to different fastening applications. The QSN and QUICKSET series cover various metric and inch torque ranges for this purpose. Depending on the model, scales and locking mechanisms help set the required value and maintain it throughout the work process.
Thus, the choice between a fixed-setting and an adjustable model depends primarily on the specific process. For consistent assembly specifications, the focus is on the reproducible repetition of a defined value. In contrast, varying components and fastening applications require greater flexibility in adjustment.
Torque screwdrivers for ESD areas and cleanrooms
In electronics manufacturing and other electrostatically sensitive areas, additional requirements apply to the tools used. GEDORE’s ESD torque screwdrivers are designed for use in electrostatically protected areas. The series covers a range of torque values and combines controlled torque transmission with an EPA-compliant design.
CRS cleanroom torque screwdrivers are available for applications under cleanroom conditions. The mechanical components are made of stainless steel or appropriately coated materials. Depending on the model, PTFE-impregnated or anodized aluminum handles are used. The CRS series covers several torque ranges, from small cNm values up to the Nm range, and is designed for both clockwise and counterclockwise tightening.
This means that the torque screwdriver is not selected solely based on the required torque. The working environment and the applicable requirements regarding material, surface, and electrostatic properties are also factors in tool selection.
Choosing the Right Torque Screwdriver
Several factors are crucial when selecting a suitable torque screwdriver. The starting point is the torque value specified for the screw connection. Based on this, the torque range, adjustment type, and design of the tool can be determined.
Important selection criteria include:
- required torque value and appropriate torque range
- fixed or adjustable design
- slip-through operating principle
- clockwise tightening or clockwise and counterclockwise tightening, depending on the specific design
- standard or special (ESD or cleanroom environments)
- metric or imperial scale for adjustable models
- suitable bit holder and matching bit for the screw connection
GEDORE offers various series and torque ranges within these criteria. This allows the tool selection to be tailored to the specific fastening process without limiting the decision to a single product series.
Additional Torque Features
Torque Service
Torque wrenches are precision measuring instruments and require regular inspection, calibration, and proper maintenance. The GEDORE Torque Service includes, among other things, the inspection, adjustment, repair, and calibration of torque tools. This work is performed in our own DAkkS-accredited calibration laboratory in accordance with DIN EN ISO/IEC 17025:2018. This ensures that accuracy, operational reliability, and documentable quality are maintained even with regular use.
Bits and inserts
All GEDORE torque wrenches in the FH series are equipped with a 1/4" hex socket for bits conforming to DIN 3126-C 6.3. Compatibility with a wide range of standard bits allows for flexible use in various fastening applications. A suitable bit, correct force application, and a properly selected torque range are crucial for achieving consistent results.
Torque wrench
Torque wrenches and torque screwdrivers complement each other in a comprehensive torque strategy. While torque wrenches are typically used for socket wrench connections in the medium- and high-torque ranges, torque screwdrivers are used for precise fastening applications in the low- and fine-torque ranges. When combined with appropriate testing equipment, they provide a traceable basis for process control and quality assurance.
Answers to the Most Frequently Asked Questions
A torque wrench is a hand-operated fastening tool that either releases a connection in a controlled manner when a preset torque is reached or displays the applied torque value. Slip-type models are designed to prevent over-tightening, while models with a display allow for the measurement and monitoring of the actual tightening torque.
A torque wrench typically features a socket drive and is designed for medium to high torque ranges. A torque screwdriver uses a bit drive and is suitable for low and precision torque ranges. Both types of tools are classified according to DIN EN ISO 6789 and are suitable for different fastening applications.
Slip-through torque wrenches are particularly well-suited for situations in mass production where a consistent tightening value must be achieved in a reproducible manner. When the preset value is reached, the mechanism slips noticeably, preventing the joint from being overtightened. This type of wrench is widely used in manufacturing, assembly, and quality control.
ESD torque screwdrivers are designed for use in electrostatic-sensitive areas and meet the requirements of the EPA standard. Cleanroom torque screwdrivers in the CRS series are made of stainless steel or suitably coated materials and are intended for environments where particle emissions and outgassing are strictly limited. Typical applications include the electronics industry, semiconductor manufacturing, medical technology, and optics.
Torque screwdrivers are subject to mechanical wear during use, which can affect their trigger accuracy. According to DIN EN ISO 6789, calibration is recommended at least every twelve months or after 5,000 load cycles, whichever comes first. Documented calibration is mandatory in quality-controlled processes in accordance with DIN EN ISO 9001 and ensures the traceability of measured values.
The Most Important Facts at a Glance
Industry Standard+
Our torque wrenches are calibrated to within +/- 3%, even though the standard specifies only 5%.
Test Certificate
You will receive a traceable test certificate for each torque wrench.
Wide selection
Bits Suitable for Various Applications and Torque Wrenches
In-House Service
From socket wrenches and slip-on wrenches to torque limiters and electronic torque wrenches.