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  1. Home
  2. Machine elements and parts
  3. 庄司歯車エンジニアリング
  4. New product information: A new modular type of self-locking rack jack has been introduced, featuring a rack movement of 17 mm with one rotation of the input shaft.
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  • Sep 24, 2012
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Sep 24, 2012

New product information: A new modular type of self-locking rack jack has been introduced, featuring a rack movement of 17 mm with one rotation of the input shaft.

庄司歯車エンジニアリング 庄司歯車エンジニアリング
This is the second product that combines a modular jack with a gearbox featuring a new self-locking mechanism that does not use the conventional self-locking worm gear at all. The input shaft torque is light at 1.01 kgm at 100K, and a fast advancement of 17 mm per rotation has been achieved. We propose this to customers who want to lift quickly with minimal force and aim for space-saving in various factory production lines. Additionally, it is possible to attach guide rods (twin shaft type).
SLB-100-17
SLB-100-17
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SLB-100-17.pdf[268805]

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We will provide you with a case study collection: How to use the new self-locking mechanism, Shoji Lock?

This is a reduction device with a new self-locking mechanism (Shoji Lock) that replaces worm gear reducers. The lineup includes reduction gears, rack jacks, and winches.

Compared to conventional worm gear reducers, our compact design and high efficiency have received positive feedback. However, we also hear many voices expressing resistance or anxiety towards new products, as well as those who prefer to stick with traditional options. We encourage both those who are hesitant and those who love new things to take a look at our case studies and consider them. Conversely, we welcome valuable suggestions on potential applications as well!

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SLM3000.JPG

Jack 50KN manual/electric rack jack with self-locking function

A jack that can lift a load of 50 kN with a light manual operating force (input shaft torque of approximately 11 Nm). This is an application product of the new self-locking mechanism (Shoji Lock).

This is a jack developed for component maintenance. It is a manual jack with a high-efficiency self-locking mechanism utilizing spur gears, featuring the Shoji lock. The main body weighs 36 kg and is made of aluminum, designed with a focus on lightweight and manual operability. It has two input shafts (high/low), allowing for easy switching between quickly turning the handle when there is no load and applying force when there is a load, simply by changing the insertion of the handle. It can be widely used for work in areas without power, as well as for disaster preparedness and energy-saving measures. It can also be used electrically.

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Jack, rack type (without screws), manual with self-locking function, 50 kgf.

Faster and more efficient compared to screw jacks. It can be operated quickly and lightly by hand, has a compact design, and can hold loads without the need for a stopper, making it highly safe.

Unlike conventional screw jacks, this rack-type jack features an overwhelmingly fast rise and fall speed due to its high efficiency, making it easy to operate. It is also equipped with a unique self-locking mechanism that allows it to hold loads without brakes or stoppers, making it a groundbreaking jack. With a rated thrust load of 50 kgf, it can be operated manually with ease, advancing exactly 4 mm per rotation, which also makes it a round-number linear jack. Its significant advancement makes it a highly versatile rack jack and linear actuator. (For more details, please refer to catalog frame number SLM-050-4.0) *For more information, please visit our official website or feel free to contact us.

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Jack, rack type (without screws), manual self-locking function, 100 kgf.

Faster and more efficient compared to screw jacks. It can be operated quickly and lightly by hand, has a compact design, and can hold loads without the need for a stopper, making it highly safe.

Unlike conventional screw jacks, this rack-type jack features an overwhelmingly fast ascent and descent speed due to its high efficiency, making it easy to operate. It is also equipped with a unique self-locking mechanism that allows it to hold loads without brakes or stoppers, making it a revolutionary jack. The rated thrust load is 100 kgf, and it can be easily operated manually, advancing 3.2 mm per rotation, making it a highly versatile rack jack and linear actuator. (For more details, please refer to catalog frame number SLM-100-3.2) *For more information, please visit our official website or feel free to contact us.

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IMG_6887.JPG

Jack, rack type (without screws), manual self-locking function, 200 kgf.

Faster and more efficient compared to screw jacks. It can be operated quickly and easily by hand, has a compact design, and can hold loads without the need for a stopper, making it highly safe.

Unlike conventional screw jacks, this rack-type jack features an overwhelmingly fast ascent and descent speed due to its high efficiency, making it easy to operate. It is also equipped with a unique self-locking mechanism that allows it to hold loads without brakes or stoppers, making it a revolutionary jack. With a rated thrust load of 200 kgf, it can be operated easily by hand, advancing exactly 3 mm per rotation, which also allows it to function as a round-number linear jack. Its significant advancement makes it a highly versatile rack jack and linear actuator. (For more details, please refer to catalog frame number SLM-200-3.0.) *For more information, please visit our official website or feel free to contact us.

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achivement_16.jpg

Jack, rack type / no screws used, self-locking electric/manual 100 kg

Compared to screw jacks, this is a hybrid type that can be operated with commercially available electric tools due to its high speed and efficiency, and it can also be operated manually by attaching a handle.

Unlike conventional screw jacks, this rack-type jack features an overwhelmingly fast ascent and descent speed, characterized by its lightweight operability due to high efficiency. Therefore, it can be operated quickly with common electric tools (drivers/drills). Additionally, it is equipped with a unique self-locking mechanism that allows it to hold loads without brakes or stoppers, making it a revolutionary jack. Moreover, it boasts excellent strength and durability while being designed to be lightweight and compact. It also employs an omnidirectional actuator that can accommodate upward, downward, and lateral movements. It is well-suited for rack-type electric cylinders and has a rated thrust load of 100 kgf. *For more details, please visit the official website or feel free to contact us.*

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IMG_0746.JPG

Jack, rack type / no screws used, self-locking electric/manual, 200 kg

Compared to screw jacks, this is a hybrid type that can be operated with commercially available electric tools due to its high speed and efficiency, and can also be operated manually with a handle attached.

Unlike conventional screw jacks, this rack-type jack features an overwhelmingly fast rise and fall speed due to its high efficiency, making it easy to operate. As a result, it can be operated quickly with common electric tools (drivers/drills). Equipped with a unique self-locking mechanism, this revolutionary jack can hold loads without brakes or stoppers. It is not only strong and durable but also designed to be lightweight and compact. Additionally, it employs an omnidirectional actuator that can accommodate upward, downward, and lateral movements. It is also ideal for rack-type electric cylinders, with a rated thrust load of 200 kgf and a reduction ratio of 63. *For more details, please visit our official website or feel free to contact us.

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Related catalog(1)

Self-Lock Rack Jack Product Catalog

Self-Lock Rack Jack Product Catalog

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Exhibition Invitation

[Live demo available] We will debut an outdoor transportable AMR at INNOVATION EXPO 2025.

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We are pleased to announce that Tokyo Machine Works Co., Ltd. will be exhibiting at the "INNOVATION EXPO 2025" to be held at Tokyo Big Sight from September 10 (Wednesday) to September 12 (Friday), 2025. 【Exhibited Equipment】 - 1-ton portable autonomous mobile robot (AMR) - 2-ton portable unmanned transport vehicle (AGV) - Shutter-equipped unmanned transport vehicle - Autonomous cleaning robot, etc. 【Booth Number】 - 6-405 You will have the opportunity to see each machine up close, including demonstrations that link the equipment together. We sincerely look forward to your visit during this event. Please note that pre-registration (free of charge) is required to attend the exhibition, so we kindly ask you to register using the link below. https://www.logistech-online.com/jp/registration.php?exhibitor=EX000072 If you would like an invitation, please request it through our contact form.

Sep 08, 2025

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Inside the casing

Added Windows 11 IoT Enterprise LTSC 2024 to the BTO menu of the industrial computer "MR4310 series."

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Contec has added a BTO menu for the Windows 11-based embedded OS - Windows 11 IoT Enterprise LTSC 2024 to its industrial computer "MR4310 series" and has started accepting orders.

Sep 08, 2025

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RP-WAH-SR12 Long-Distance Transfer Type

Achieving long-distance wireless Ethernet transmission of up to 1 km using the sub-gigahertz band. New release of Ethernet wireless converters "RP-WAH-SR12/RP-WAH-SR22".

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Contec has developed the Ethernet wireless converters "RP-WAH-SR12" and "RP-WAH-SR22," which utilize 920MHz sub-gigahertz wireless (IEEE 802.11ah) to enable Ethernet communication wirelessly even at distances of up to 1 km. Sales began on August 21, 2025. The new products are compact IEEE 802.11ah compliant wireless LAN converters that can be installed in various locations. The new Wi-Fi standard "IEEE 802.11ah," which utilizes sub-gigahertz wireless communication, became available in Japan in September 2022. It operates in the 920MHz band without the need for a license and can be used outdoors. Compared to conventional 920MHz wireless communication, it enables high-speed communication and the establishment of long-distance networks, making it expected to be utilized in large factories, plants, and farms. The new Ethernet wireless converters are designed to be lightweight and compact, allowing for installation in various locations such as walls and DIN rails with the included mounting brackets. Additionally, they support external antennas, enabling the construction of flexible wireless LAN systems.

Sep 08, 2025

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Introducing the new ultra-compact business computer "LPC-500 Series" recommended for edge AI terminals with built-in "Intel(R) AI Boost."

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Contec has developed a super compact business computer equipped with the Intel(R) Core(TM) Ultra processor (Series 1), and has started accepting orders for the business computer "LPC-500 Series" (hereinafter referred to as the new product) from August 28, 2025. The new product is a super compact business computer featuring the Intel(R) Core(TM) Ultra 5 processor 125U (Series 1, Meteor Lake-U). It is equipped with "Intel(R) AI Boost," which integrates an NPU into the CPU, allowing for the execution of AI functions such as image recognition and voice processing at high speed and low power consumption while reducing the load on the CPU and GPU. With ultra-compact dimensions of 150(W) × 150(D) × 33(H) mm, it comes with a vertical stand and VESA mounting brackets, enabling installation in tight spaces on desks, behind displays, or inside equipment without restriction. It adopts a BTO (Build to Order) method that allows customers to freely choose memory capacity, storage, OS, and more, enabling the order of a PC with specifications optimal for their needs and budget starting from just one unit.

Sep 08, 2025

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External diameter finishing with 'external diameter film polishing'

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This is an introduction to "outer diameter film polishing," which is used for ultra-finish machining of various shaft-type workpieces. - Wouldn't you like to achieve ultra-finish machining more easily, safely, and with less variation? Please take a look at what film polishing is, along with related products and catalogs!

Sep 08, 2025

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