Winch, jack, and reducer for load holding without brakes for laboratories and research facilities.
Self-locking winches, rack jacks, and reducers are widely used in university research laboratories. The deciding factors for adoption are lightweight, smart, and compact!
We have developed a number of applied products that incorporate our self-locking 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 a brake. - Compared to worm gear reducers with the same self-locking function, it is highly efficient. Additionally, while the worm has input and output axes that are orthogonal, our input and output shafts are aligned (in-line), making it considerably more compact, space-saving, and lightweight. - Unlike ratchets or one-way clutches, it can hold a load at any position where movement is stopped, regardless of the direction of rotation. It can also be restarted without releasing the brake (in either direction), offering simple operability. 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. - Each applied product is available in both manual-only and types that can be driven by commercially available electric tools (drill drivers).
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basic information
<Inline Reduction Gear> - Significantly more compact design and lightweight compared to large worm reduction gears. - Capable of rotating the workpiece while holding the load in a tilted or inverted position for operation. - Lineup of manual models compatible with SRM 5 to 100 kgm. - Lineup of electric models compatible with SRE 3 to 50 kgm. <Winch> - Loads can be wound up with a handle, and the load is held when the handle is released. - Unlike a ratchet, it can hold the load in both forward and reverse rotation. - Can be restarted without releasing the brake (forward and reverse rotation possible). - Available types that can be driven by commercially available electric tools (drill drivers). - Lineup of manual models compatible with SWM loads of 50/100 kg. - Lineup of electric (tool) models compatible with SWE loads of 50 to 300 kg. <Rack Jack> - Holds the load when the round rack rod is raised and stopped. - Features faster lifting speed and lighter operability compared to screw jacks. - Additional guide rods can be added in case of buckling concerns. - Lineup of manual models compatible with SLM loads of 50 to 400 kg. - Lineup of electric models compatible with SLE loads of 100 to 400 kg. *For detailed specifications, please refer to the Ipros product information, our company website, or catalog.
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Applications/Examples of results
Achievements (in no particular order) / The University of Tokyo, Tsukuba University, Tohoku University, Kumamoto University, Tokyo Institute of Technology, and others "shoji-lock" that stops movement An absolute stop that maintains load at the desired position We assist with this fundamental action of not only transmitting power but also wanting to hold a load. On land... for automotive manufacturing lines, solar panel manufacturing lines, and nuclear power plants At sea... for opening and closing ship steering control panels, for underwater survey retrieval, and for raising and lowering the roofs of houseboats In the air... for power line repair work and for cleaning gondolas on high-rise buildings It is 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.
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 used in tilting and inversion devices. It holds the load in place (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 designed 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 installed 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 quickly wound manually.
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Special Product Case 2 Achievements with a semiconductor device 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 3 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 4 Our lineup includes the SRM-005-11 small inline reducer, which is 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 Example 5 We have added guide rods to our lineup SLM-050-4.0 small rack jack, creating a twin shaft to address issues such as buckling. 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 6 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 a quite compact design is achievable.
Line up（6）
| Model number | overview |
|---|---|
| SRM Series | Manual only (low speed) inline reduction ratio Rated output shaft torque (available for 5/6/12/25/50/100 kg·m) |
| SRE Series | Manual & Electric Tool Assist (High-Speed) Inline Reducer Available for Rated Output Shaft Torque (3/6/12/25/50 kgm) |
| SWM Series | Manual-only winch Load capacity (available for 50/100 kg) |
| SW series | Manual & Electric Tool Assist Type Winch Load Capacity (Available for 100/300 kg) |
| SLM Series | Manual-only rack-type jack (linear actuator) Load capacity (available for 50/100/200/400 kg) |
| SLE Series | Manual & Electric Tool Assist Type Rack Jack (Linear Actuator) Load Capacity (Available for 100/200/400 kg) |
catalog（4）
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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.