Self-locking winches, rack jacks, and reducers can be easily operated manually without power. Lightweight, smart, and compact, they are ideal for disaster preparedness!
We have developed numerous applied products featuring a unique load-holding function with a reduction mechanism (Shoji-lock), which have been well received by our customers. (Patents obtained both domestically and internationally) <Features of Shoji-lock products> - When rotation is applied from the input side, the output side decelerates and transmits power, but rotation is not possible from the output side = self-locking function. This means that it can hold a load at the desired position without the need for brakes. - Compared to worm reduction gears with the same self-locking function, it is highly efficient. Furthermore, while worms have input and output axes that are orthogonal, our input and output shafts are aligned (in-line), making it considerably compact and space-saving, as well as lightweight. - Unlike ratchets or one-way clutches, it can hold a load at any position when motion is stopped, regardless of the direction of rotation. Additionally, there is no ratchet noise, making it suitable for use in quiet environments. - It has a basic sealed structure (IP65) and is maintenance-free. - We offer a variety of applied products, including reduction gears that utilize this self-locking mechanism, winches, and linear actuators (rack jacks). We also develop original devices based on customer requests. *For more details, please feel free to contact us.*
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basic information
<Inline Reducer = S Reducer> - High efficiency compared to worm reducers - Significantly more compact design and lightweight compared to large worm reducers - 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 - Can be driven by commercially available electric tools (drill drivers) - Available with a locking and releasing function for quick wire release - Lineup of manual models compatible with SWM load 50 to 300 kg - Lineup of electric (tool) models compatible with SWE load 50 to 300 kg - Motor built-in type SWP is also available <Rack Jack = S Linear Actuator> - Raises and holds a round rack rod in place to maintain load - Additional guide rods can be added in case of buckling concerns - Lineup of manual models compatible with SLM load 50 to 200 kg - Lineup of electric models compatible with SLE load 100 to 800 kg *For any special products (high load conditions, all SUS, etc.), please consult us.
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Winches (hoisting machines) can be operated manually or with an electric screwdriver even in places without power, making them useful during disasters! (For example: transporting goods to upper floors of a building where the elevator is broken.) We also offer a rust-resistant stainless steel type! "shoji-lock" that stops movement An absolute stop that holds the load at the desired position This basic operation not only transmits power but also assists in holding the load. On land… for automotive manufacturing lines, solar panel manufacturing lines, and nuclear power plants. At sea… for opening and closing ship control panels, for underwater survey retrieval, and for raising and lowering the roofs of houseboats. In the air… for maritime rescue, for power line repair work, and for cleaning gondolas on high-rise buildings. They are adopted in various situations and for various purposes. In particular, many stainless steel and aluminum products designed for clean rooms are used in semiconductor-related applications. *For more details, please refer to our case studies and website.
Detailed information
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SLW Series: A specification that combines our winch and rack jack. The rack rod rises and falls by 11.5 mm per rotation, and of course, it holds the load even when the operation stops. Compact and versatile!
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SRM Series As shown in the image, it is adopted for tilting and inverting devices. It holds the load (self-locking) when tilted, and its very compact design has received positive feedback.
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Special Product Case 1 We handle a large number of all-stainless steel products suitable for clean rooms, such as those used in semiconductors, medical devices, and food machinery, as well as in marine and oceanic fields. The photo shows an electric tool winch mounted inside a seabed survey buoy. 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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Special Product Case 3 Achievements with a semiconductor equipment manufacturer. An all-aluminum (A7075) design is also possible, where a belt is used to lift the load instead of a wire, as shown in the photo.
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Special Product Case 4 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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Special Product Example 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 very compact. It is especially recommended for tilting devices and similar applications.
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Special Product Case 6 We have added guide rods to our SLM-050-4.0 compact rack jack in our lineup, creating a twin shaft design 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 developed for application 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, our design features them in a straight line (inline), allowing for a compact design and space-saving, which has received high praise and resulted 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 overseas parts procurement business, beginning with Vietnam. Currently, a majority of our parts are procured overseas, and leveraging our achievements and network, we aim to assist companies struggling with cost reduction in parts procurement.