庄司歯車エンジニアリング Official site

Power supply and brake-free load holding for industrial robots! Compact winch.

Roll up the work, and it self-locks when the handle is released! No need to release; it can restart in both forward and reverse rotation from the stopped position! Lightweight and compact with many applications!

This is a compact and lightweight winch equipped with our company's self-locking mechanism (Shoji-Lock). It holds the load at the position where the workpiece is lifted. Additionally, it can be restarted from any position without releasing the brake, whether in forward or reverse rotation. Its lightweight and compact design allows for space-saving, and it has been adopted and well-received in various fields. In addition to the manual-only (SWM series) models, we also offer electric models (SWE series) that can be driven by power tools like drill drivers. The load capacity ranges from 50 kg to 300 kg. Furthermore, we have some models made of stainless steel suitable for clean rooms and vacuum equipment, as well as aluminum models that achieve further weight reduction. The manual-only versions are dustproof. These winches can be widely used in locations without power, for disaster response, energy-saving measures, defense and military applications, and explosion-proof measures. Since it is not a ratchet, it operates very quietly, making it suitable for nighttime work and environments such as hospitals, research facilities, and laboratories. The stainless steel models are used not only in clean rooms but also in marine and ship-related applications. The aluminum models are very convenient for portability due to their lightweight. They are also adopted in medical devices, food machinery, and defense and military applications.

Shoji Gear Engineering Co., Ltd. Official Website

basic information

【Lineup】 SWM (Manual Only) Series Available in load capacities of 50kg / 100kg Comes with a dedicated handle Available in all stainless steel Available in all aluminum (50kg only) Long wire winding (L type) available In addition to wire, belt winding type available *Wires and belts are not included, but can be provided (optional) SWE (Electric Tool Assist) Series Uses commercially available electric tool drill drivers (Note: impact drivers are not allowed) to lift the workpiece and holds the load when the driver is stopped. No motion restart is possible (without brake release). The input shaft tip of the winch is hexagonal to accommodate commercially available sockets, and it can also be used manually. *Dedicated handle is optional Available in load capacities of 50kg / 100kg / 300kg Available in all stainless steel Long wire winding (L type) available In addition to wire, belt winding type available *Wires and belts are not included, but can be provided (optional) For detailed specifications, please refer to the Ipros product information, our company website, or catalog.

Price information

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Delivery Time

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Model number/Brand name

SWM/SWE Series

Applications/Examples of results

- Adopted by vacuum equipment manufacturers and cleanroom specification factories - Adopted as equipment by medical device manufacturers - Adopted in food factory production lines - Adopted by semiconductor equipment manufacturers - Adopted as marine and offshore-related equipment - Adopted in university laboratories and various research institutions - Also adopted in the architecture and interior design sectors - Adopted by the Ministry of Defense in military and defense-related applications - Adopted in plant and nuclear power-related applications

Detailed information

Line up(9)

Model number overview
SWM-050-12 Manual use only, load capacity 50 kg. Made of iron (surface treatment black dyeing), Teflon coating available upon request.
SWM-100-12 Manual use only, load capacity 100 kg. Made of iron (surface treatment black dyeing), Teflon coating available upon request.
SWM-100L-12 Manual use only, load capacity 100 kg Made of iron (surface treatment black dyeing), Teflon coating available upon request Long type, increased wire winding capacity
SWM-100-12SSB Manual use only, load capacity 100 kg Stainless steel, compatible with both wire and belt types
SWM-050-12AK7 Manual use only, load capacity 50 kg Made of aluminum (surface treatment anodized)
SWE-100-64 For manual and electric tool assistance, load capacity 100 kg. Made of iron (surface treatment black dyeing), Teflon coating available upon request.
SWE-100L-64 Manual and electric tool assist, load capacity 100 kg Made of steel (surface treatment black dyeing), Teflon coating available upon request Long type / Increased wire winding capacity
SWE-300-351SS Manual and electric tool assist, load capacity 300 kg, made of stainless steel.
SWE-300L-351 Manual and electric tool assist, load capacity 300 kg Made of steel (surface treatment black dyeing), Teflon coating available upon request Long type / Increased wire winding capacity

Self-Locking Winch Product Catalog

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Self-locking and Speed Reducer Product Catalog

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Self-Lock Rack Jack Product Catalog

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Brochure for Parts Procurement in Vietnam and Overseas

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CAD data(7)

Model number overview File
SWM-050-12AK70(54) Manual-only winch Maximum rope pulling force 50 kgf, reduction ratio i = 12 Lightweight aluminum type, drum diameter Φ70 or Φ54
  • 2D dxf ( 2MB)
SWM-050L-12   Manual-only winch Maximum rope pulling force 50 kgf Reduction ratio i = 12 Long bobbin
  • 2D dxf ( 0B)
SWM-100-12 Manual-only winch Maximum rope pulling force 100 kgf Reduction ratio i = 12
  • 2D dxf ( 0B)
SWM-050-12 Manual-only winch Maximum rope pulling force: 50 kgf Reduction ratio i = 12
  • 2D dxf ( 0B)
SWE-300L Manual/Electric Tool Assist Winch Maximum Rope Pulling Force 300 kgf Gear Ratio i = 81, 117, 182, 351 Long Bobbin Hexagonal Tip Specification
  • 2D dxf ( 940KB)
SWE-300 Manual/Electric Tool Assist Winch Maximum Rope Pulling Force 300 kgf Gear Ratio i = 81, 117, 182, 351 Hexagonal Tip Specification
  • 2D dxf ( 0B)
SWE-100 Manual/Electric Tool Assist Winch Maximum Rope Pulling Force: 100 kgf Reduction Ratio: i = 64, 92, 176 Hexagonal Tip Specification
  • 2D dxf ( 0B)

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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.