The number of adoptions is increasing for rack-type jacks (without screws) with load-holding features.
No need for brakes or stoppers! You can work or conduct experiments while maintaining the position even after stopping the lift. Unlike screws, it offers light operability and is lightweight, smart, and compact!
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 equipped with a unique self-locking mechanism that allows it to hold loads without brakes or stoppers, making it a revolutionary jack. In emergencies, it can operate and maintain loads even without a power supply. It is available in a manual type with a rated thrust load of 50 kgf. Additionally, it has a large stroke, making it a highly versatile rack jack and linear actuator, suitable for universities, research institutes, and testing facilities. As shown in the photos and videos, when mounted as a lab jack or table lifter, it can hold its position while loaded, and resuming operation is seamless with a simple turn of the handle. (For more details, please refer to our website or catalog.) The basic surface treatment includes a black Teflon coating that is resistant to rust. *For more information, please visit our official website or feel free to contact us.
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basic information
Basic Specifications: Rated thrust load of 50 kgf, feed amount of 4 mm per revolution, input torque of approximately 1.6 Nm at maximum load, manual handle operation force of about 2.4 kg (handle diameter 70 mm), applicable round rack rod φ10, body weight of 0.9 kg (excluding rack). *For other products, please check our website or catalog. 【Features】 ○ Holds the stopping position of the rack rod. ○ Compact, lightweight, and economical. ○ Excellent strength and durability. ○ High efficiency, easily operable both manually and electrically. ○ The reduction gear unit is maintenance-free and does not require oil changes. 【Other Features】 ○ Input shaft that holds the stopping position without a stopper. ○ Low friction and highly durable micro-tooth differential compound cycloidal mechanism. ○ Simple and robust machined case. ○ All-direction actuator capable of vertical lift, lowering, and lateral movement. ○ Equipped with Shoji lock for safety, labor-saving, and space-saving. ○ Rack-type lifting shaft that is strong against buckling and does not require a stop. ○ Reversible design that allows installation on either side. ● For more details, please request materials or contact us.
Price information
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Delivery Time
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Applications/Examples of results
Semiconductor manufacturing line Aluminum manufacturing line Control panel cover opening and closing device Chair lifting device University experimental equipment, etc.
Detailed information
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Overwhelming advancement! It can raise and lower the rack rod by 11.5 mm in one rotation, and it's compact! Of course, it holds the load when stopped. SLW-100-11.5-20
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It has been developed as a type that drives two racks simultaneously with one pinion. By using it vertically, it can be used for lifting applications, and by using it horizontally, it allows for self-locking with a bi-fold door.
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It is a round number linear jack. In the case of SLM-050-4.0, it moves exactly 4mm per rotation. Due to its compact size, it can be installed in tight spaces. There are many applications, such as simple lifting in places without power.
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Two rack synchronization is also possible. By connecting with a connecting pipe as shown in the image, the rack rods can rise and fall simultaneously when the handle is turned. It can be designed quite compactly.
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The lineup also includes models with guide rods. Adopted in the experimental equipment of a certain university laboratory. If you are concerned about the buckling of the rack rods, we recommend the twin shaft type.
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We accept customization. Adopted by a certain semiconductor manufacturer for factory equipment. We strive to meet your requests as much as possible, including handles and surface treatments.
Line up（8）
| Model number | overview |
|---|---|
| SLM-050-4.0 | For 50kg manual use. Size 40 square, rack diameter Φ10, advance per rotation 4.0mm. |
| SLM-100-3.2 | For 100kg manual use. Size 50 square, rack diameter Φ15, advance per rotation 3.2mm. |
| SLE-100-0.56 | For 100kg manual and electric tool driven type. Size 50 square, rack diameter Φ15, advance per rotation 0.56mm. Hexagonal tip. |
| SLM-200-3.0 | For 200kg manual use. Size 70 square, rack diameter Φ20, advance per rotation 3.0mm. |
| SLE-200-1.1 | For 200kg manual and electric tool driven type. Size 70 square, rack diameter Φ20, advance per rotation 1.1mm. Hexagonal tip. |
| SLM-400-0.8 | For 400kg manual use. Size 90 square, rack diameter Φ25, advance per rotation 0.8mm. |
| SLE-400-1.1 | For 400kg manual and electric tool driven type. Size 90 square, rack diameter Φ25, advance per rotation 1.1mm. Hexagonal tip. |
| SLW-100-11.5 | For 100kg manual high-speed lifting type. Size 90 square, rack diameter Φ20, advance per rotation 11.5mm. |
catalog（2）
Download All Catalogs
CAD data（9）
| Model number | overview | File |
|---|---|---|
| SLM-050-4.0 | Manual-only rack jack, load capacity 50 kg, rack rise 4.0 mm per revolution, reduction ratio 11, round rack diameter 10 mm. |
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| SLW-100-11.5-20 | Manual-only rack jack, high-speed lifting type, load capacity 100 kg, rack rise 11.5 mm per rotation, reduction ratio 12, round rack diameter 20 mm. |
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| SLM-100D-3.2 | Manual-only rack jack SLM-100 can be used in conjunction with two units, with a load capacity of 200 kg. Rack elevation is 3.2 mm per rotation, with a reduction ratio of 16, and round rack diameter is Φ15. The connection part will be designed and manufactured by the customer. |
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| SLM-200-3.0 | Manual-only rack jack, load capacity 200 kg, rack rise 3.0 mm per rotation, reduction ratio 23, round rack diameter 20 mm. |
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| SLM-100-3.2 | Manual-only rack jack, load capacity 100 kg, rack rise 3.2 mm per rotation, reduction ratio 16, round rack diameter 15 mm. |
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| SLE-400-1.1 | Manual/Electric Tool Assist Rack Jack, Load Capacity 400 kg, Rack Rise 1.1 mm per Revolution, Reduction Ratio 78, Round Rack Diameter 25 mm, Hexagonal Tip Specification. |
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| SLM-400-0.8 | Manual-only rack jack, load capacity 400 kg, rack rise 0.8 mm per rotation, reduction ratio 108, round rack diameter 25 mm. |
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| SLE-100-0.56 | Manual/Electric Tool Assist Rack Jack, Load Capacity 100 kg, Rack Rise 0.56 mm per Revolution, Reduction Ratio 93, Round Rack Φ15, Hexagonal Tip Specification. |
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| SLE-200-1.1 | Manual/Electric Tool Assist Rack Jack, Load Capacity 200 kg, Rack Rise 1.1 mm per Revolution, Reduction Ratio 63, Round Rack Φ20, Hexagonal Tip Specification |
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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.