Yokota: Precision Drive and Tightening Tools
Technology for high-speed, precise, and zero-defect assembly
In Arsam We offer you industrial assembly and power tools. Yokota, the Japanese standard in precision and ergonomics. We are specialists in innovative Hydraulic Thruster Technology, which allows high tightening torques to be achieved without reaction torque, guaranteeing maximum safety for the operator and the integrity of the bolted joint.
Yokota develops specialised tools for the most critical assembly applications in the automotive, mechanical engineering and serial production industries.
Boost keys
Yokota's patented boost technology uses a hydraulic cylinder to generate a high-energy pulse, achieving a Superior speed and consistent tightening accuracy without the strong «kickback» or reaction moment of a traditional impact wrench.
Pneumatic Models The brand's origin, known for their high speed and low maintenance (e.g., YLTX, YLA Series).
Cordless Models The most flexible solution that retains impulse accuracy (e.g., YBX Series).
Models Shut-off and Poka-Yoke: Tools with automatic disconnection and torque control to ensure repeatability and eliminate errors on the assembly line.
Pneumatic tools
As well as impact wrenches, Yokota offers a range of robust pneumatic tools for heavy-duty and general production applications.
Impact Wrenches Models with 1 or 2 hammers for heavy-duty use.
Pneumatic Grinders and Sanders Power tools for surface preparation and finishing.
Drills and Tappers Equipment designed for continuous use in industrial environments.
Precision and controlled tightening systems
For tightening applications where traceability and torque certification are mandatory (Zero Fault Production).
Electric System Wrenches With transducerised torque and angle control, ensuring every bolted joint meets the exact specification, with process documentation.
Impact sockets and accessories
Yokota, through its specialised brand ACTION, offers a comprehensive range of sockets and accessories designed specifically for working with high-torque air and impact tools.
These accessories are not standard sockets; they are designed for heavy industrial use and meet strict standards (DIN3121 and DIN3129). Especially noteworthy are the Sleeve Drive Pots, which reduce «wobble» and optimise torque transfer and ergonomics, improving the lifespan of both the socket and the tool.
Why choose Yokota Technology?
About Rami Yokota
Yokota Kogyo Co., Ltd. has been a pioneer in the development of pneumatic tools in Japan. Over 40 years ago, Yokota developed the first pneumatic impulse tools, a technology that is now essential on automotive assembly lines worldwide. The brand is synonymous with innovation, precision and quality, continuously focusing on improving operator productivity and ergonomics.
FAQ – Frequently Asked Questions about Yokota
A type of pneumatic tool used for fastening and unfastening nuts and bolts. It works by delivering rapid, controlled rotational blows to a fastener, which allows for quick and efficient tightening or loosening.
A Yokota impulse wrench is a tightening tool that uses a motor (pneumatic or electric) and a Hydraulic mechanism (oil) to generate multiple torque pulses in the screw. Unlike an impact wrench, the force is transmitted without generating a strong counter-attack in the operator's hand, offering high speed, precision and superior ergonomics.
The main ergonomic advantage of Yokota tools is their excellent vibration reduction.
The main ergonomic advantage is the elimination or drastic reduction of the reaction force (recoil). This allows the operator to work with high-torque tools. using one hand and without the need for heavy reaction arms or supports, minimising the risk of injury from vibration, fatigue and jolting movements.
Yokota impact wrenches are used in the automotive industry because of their high torque output, durability, and ergonomic design. They are ideal for heavy-duty tasks such as assembly, disassembly, and maintenance of vehicles.
They are widely used because the thrust technology provides the perfect balance between speed (crucial on an assembly line) and Torque accuracy (necessary for the safety of the bolted joint). Furthermore, the possibility of incorporating functions Shut-off and Poka-Yoke makes them indispensable for processes of zero-defect production and full traceability.
What does it mean for a Yokota tool to have the ‘Shut-Off’ function?
The ‘Shut-Off’ function (automatic disconnection) means that the tool automatically stops tightening once the preset torque is reached. This ensures a Very high repeat accuracy and avoid overtightening, which is vital for assembly quality and component integrity.
Do Yokota torque wrenches require hydraulic oil to operate?
Yes. Yokota's propulsion technology uses a Hydraulic cylinder with special oil Which is what generates the torque pulses. Unlike a mechanical impact wrench system, the quality and condition of this oil are crucial for the Precision and the tool's performance. Nevertheless, Yokota has designed its systems to minimise abrasion, which translates into a Very low maintenance and a long service life for the oil and internal components.
Even though the initial investment is higher, why are Yokota tools more profitable in the long run?
Yokota's long-term profitability is based on three key factors:
Cost Reduction through Quality The accuracy of tightening eliminates assembly errors and the need for rework, which results in a zero-defect production and fewer wasted parts.
Staff Savings Ergonomics (zero recoil) reduces the risk of musculoskeletal injuries and lost time associated with operator fatigue.
Durability The quality of Japanese manufacturing and the precision of the design ensure a significantly longer service life that standard tools, reducing replacement and repair costs over the years.
Why should I use impact sockets and not conventional sockets with my Yokota tools?
It is crucial to use only impact sockets (typically made from chrome-molybdenum alloy, CrMo) for any powered tightening tool (impact wrenches or drivers). Conventional (chrome-plated) sockets are designed for hand use and they do not resist torsional and shock forces of a pneumatic tool, which can cause the bursting of the pot, damage to the bolt and, most importantly, Serious security risks for the operator. Yokota/ACTION sockets comply with safety regulations (ISO 11148-6) which require the use of impact accessories with power tools.