Winches, rack jacks, and reducers that self-lock without brakes are widely used in semiconductor devices, with the key factors being lightweight, compact design, and space-saving!
We have developed numerous applied products featuring our unique load-holding function reduction mechanism (shoji-lock), which have been well received by our customers. <Features of shoji-lock products> - When rotation is applied from the input side, the output side slows down and transmits power, but rotation is not possible from the output side = self-locking function. This means that it can hold the load at the desired position without the need for brakes. - Compared to worm gear reducers with the same self-locking function, it is highly efficient. Additionally, while the worm has the input and output at right angles, our design has the input and output shafts aligned in a straight line (in-line), making it considerably more compact and space-saving, as well as lightweight. - Unlike ratchets or one-way clutches, it can hold the load at any position when motion is stopped, regardless of the direction of rotation. Furthermore, there is no ratchet noise, making it suitable for use in quiet environments. - It features a basic sealed structure (IP65) and is maintenance-free. - We offer a variety of applied products, including reducers that utilize this self-locking mechanism, winches, and linear actuators (rack jacks). - Stainless steel versions are also available for each model, suitable for clean room applications. *For more details, please feel free to contact us.
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basic information
<Inline Reducer = S Reducer> - Higher efficiency compared to worm reducers - Significantly more compact design and lightweight compared to large worm types - Lineup of manual models compatible with SRM 5 to 100 kgm - Lineup of electric models compatible with SRE 3 to 50 kgm <Winch = S Winch> - Load is wound up with a handle and held in place when the handle is released - Unlike a ratchet, it can hold position in both forward and reverse rotation - Available in a type that can be driven by commercially available electric tools (drill drivers) - Lineup of manual models compatible with SWM load 50 to 100 kg - Lineup of electric (tool) models compatible with SWE load 50 to 300 kg <Rack Jack = S Linear Actuator> - Raises and lowers a round rack rod, holding the load in place when stopped - Additional guide rods can be added in case buckling is a concern - Lineup of manual models compatible with SLM load 50 to 400 kg - Lineup of electric models compatible with SLE load 100 to 400 kg - Available in a type that can connect two units for simultaneous drive (without an intermediate shaft) for some models
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Applications/Examples of results
Achievements / Semiconductor-related, vacuum equipment manufacturers, food machinery, automotive factories, plant-related, various machinery manufacturers (mixing and powder), furnace-related, nuclear power generation-related, etc. The "shoji-lock" that stops movement An absolute stop that holds the load at the desired position We assist with this fundamental action of not only transmitting power but also wanting to hold the load. On land... automotive manufacturing lines, solar panel manufacturing lines, nuclear power plants At sea... ship steering control panel opening and closing, underwater survey lifting, yakatabune roof raising and lowering In the air... for maritime rescue, power line repair work, high-rise building cleaning gondolas It is adopted in various situations for various applications. In particular, stainless steel and aluminum products for clean room specifications are widely used in the semiconductor sector. For more details, please refer to the case studies and our website.
Detailed information
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SLW Series SLW for 100kg: A specification combining our winch and rack jack. The rack rod rises and falls by 11.5mm per rotation, and of course, it holds the load even when the operation stops. Compact with multiple applications! A version for 300kg is also available.
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SRM Series As shown in the image, it is used in tilting and reversing devices. It holds the load when tilted (self-locking) and is very compact, which has received positive feedback.
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Case Study 1 of Special Products We handle a large number of all-stainless steel products required for clean rooms in fields such as semiconductors, medical devices, and food machinery, as well as in the marine sector. The photo shows an electric tool winch mounted inside a buoy for underwater surveys. The input shaft is hexagonal, allowing it to be driven with commercially available sockets. By attaching a dedicated manual speed increaser on the opposite side of the input shaft, it becomes a hybrid type that can be wound up quickly by hand.
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Case Study 2 of Special Products Even with inexpensive induction motors, there are many cases where they can self-lock without the need for brakes, or are used in combination with brake-equipped motors for double safety. The photo shows an aluminum construction (A7075, black anodized treatment) for weight reduction and rust prevention.
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Case Study 3 of Special Products Achievements with a semiconductor equipment manufacturer. It is possible to manufacture a specification that uses a belt to lift the load instead of a wire, made entirely of aluminum (A7075), as shown in the photo.
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Case Study 4: Special Products Medical-related achievements. This type uses fine strings to lift loads instead of wires. The photo shows a steel product treated with electroless nickel, which can be finished more cheaply than all stainless steel or aluminum.
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Case Study of Special Products 5 Our lineup includes the SRM-005-11, a compact inline reducer made entirely of stainless steel. The input and output shafts are neither orthogonal nor offset; they are aligned in a straight line, yet it self-locks, making it extremely compact. It is particularly suitable for tilting devices and similar applications.
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Special Product Example 6 We have added guide rods to our SLM-050-4.0 compact rack jack in our lineup, creating a twin shaft to address buckling and other issues. As shown in the photo, flanges can also be attached and manufactured at both ends. Please compare it to a cigarette. It is very compact.
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Special Product Case 7 The SLM-D type, which responds to the request to "raise and lower two rack rods simultaneously" in the SLM series. By connecting two rack jacks with a connecting pipe, it is possible to synchronize the two rack rods. Of course, it comes with a load-holding function and allows for a quite compact design.
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Company information
The load-holding function equipped reduction mechanism (shoji-lock) has been developing applied products such as winches and rack jacks since the early 2000s. Steady sales activities have borne fruit, and it has begun to be adopted for various applications. Unlike conventional worm reduction gears with self-locking functions where the input and output shafts are orthogonal, this mechanism has them aligned in a straight line (inline), allowing for a compact design and space-saving, which has received high praise, resulting in a diverse range of practical examples. (Patents have been obtained in Japan, the United States, the EU (Germany, France, the UK), China, South Korea, and Taiwan.) Furthermore, starting in April 2023, we launched a new business for overseas parts procurement, beginning with Vietnam. Currently, a majority of our parts are also procured overseas, and we hope to leverage our achievements and network to assist companies struggling with cost reduction in parts procurement.