庄司歯車エンジニアリング Official site

Compact inline reduction gear with load holding function for tilting and reversing, for railway applications.

No need for brake stoppers! It can hold the load while stopped and allows for work and experiments at an angle. The input and output shafts are in a straight line, making it smart and compact!

Equipped with a self-developed load-holding (self-locking) deceleration function (shoji-lock), it can maintain load even if the movement is stopped during the ascent, rotation, or tilting of the device. This feature is suitable for requests such as wanting to conduct experiments or perform tasks at a stopped position. Additionally, it can drive and hold loads even without power during emergencies. It has been introduced as a mechanical component in various applications, including semiconductor manufacturing equipment, automotive assembly lines, and plant lid opening and closing. Another feature is that, unlike conventional worm gear reducers which require a considerable amount of space due to the perpendicular arrangement of the input and output shafts, our design allows the input and output shafts to be in a straight line (inline). This enables a lightweight, smart, and compact design that can be easily integrated into various devices. The lineup can be selected based on output shaft torque and reduction ratios. For some products, all-stainless steel manufacturing is also available to accommodate cleanroom requirements. The basic model is coated with black Teflon, which is resistant to rust. *For more details, please visit our official website or feel free to contact us.*

Shoji Gear Engineering Co., Ltd. Official Website

basic information

Five Features of S-Reducer (5S) - Self Lock = Holds the stopping position of the output shaft. - Simple = Compact, lightweight, and economical. - Strong = Excellent strength and durability. - Silent = Operates quietly without ratchet noise. - Safely = Maintenance-free with a sealed structure that eliminates the need for grease replacement. We offer a wide range of products utilizing this mechanism. (Patents obtained in Japan, as well as in the EU, the United States, South Korea, Taiwan, and China.)

Price information

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Delivery Time

Applications/Examples of results

Space-saving can be achieved compared to worm gear reducers. Efficiency is also good. Many devices that want to maintain self-holding during operation, such as furnace lifting and door opening and closing, are adopted. Used by semiconductor equipment manufacturers, automotive manufacturers (factories), plant manufacturers, and in the architecture and interior design fields.

Detailed information

Line up(3)

Model number overview
SRM-005-11SS All stainless steel, compatible with clean rooms
SRM006~100 Standard lineup of manual inline reducers compatible with 6, 12, 25, 50, and 100 kgm. Various reduction ratios are also available. Please refer to the catalog for more details.
SRE003~050 Standard lineup of electric inline reducers compatible with 3, 6, 12, 25, and 50 kgm. Various reduction ratios are also available. Please refer to the catalog for more details.

Self-locking and Speed Reducer Product Catalog

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Brochure for Parts Procurement in Vietnam and Overseas

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CAD data(10)

Model number overview File
SRM-005-11 Inline reduction gear Permissible rated holding torque 5 kgm, manual use only Reduction ratio i = 11 Stainless steel version also available
  • 2D dxf ( 0B)
SRM-006 Inline reduction gear Permissible rated holding torque 6 kg·m for manual use (low-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRM-025 Inline reduction gear Permissible rated holding torque 25 kg·m, manual use only (input shaft rotation low-speed type)
  • 2D dxf ( 0B)
SRM-100 Inline reduction gear Permissible rated holding torque 100 kg·m manual only (input shaft rotation low-speed type)
  • 2D dxf ( 0B)
SRM-012 Inline reduction gear Permissible rated holding torque 12 kg·m For manual use (low-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRM-050 Inline reducer Permissible rated holding torque 50 kgm Manual only (input shaft rotation low-speed type)
  • 2D dxf ( 0B)
SRE-006 Inline reduction gear Permissible rated holding torque 6 kg·m, suitable for both electric and manual operation (high-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRE-012 Inline reduction gear Permissible rated holding torque 12 kg·m, suitable for both electric and manual operation (high-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRE-050 Inline reduction gear Permissible rated holding torque 50 kg·m, suitable for both electric and manual operation (high-speed input shaft rotation type)
  • 2D dxf ( 0B)
SRE-025 Inline reducer Allowable rated holding torque 25 kg·m Electric and manual dual-use (input shaft high-speed rotation type)
  • 2D dxf ( 0B)

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Distributors

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.