Products

MHI HASEG Worm Gear Reducer SCUA Series

The MHI HASEG Worm Gear Reducer SCUA Series is a compact, single-stage horizontal-shaft reducer with a hollow output shaft, offering space-saving installation and reliable torque transmission for a wide range of industrial applications. Engineered with MHI HASEG’s advanced Niemann tooth profile, the SCUA Series ensures high efficiency, quiet operation, and excellent self-locking performance in compact equipment and low-speed drive systems.

MHI HASEG Worm Gear Unit-2.png

 


Key Features

  1. Horizontal Hollow-Shaft Configuration

    The SCUA Series features a horizontal input shaft and a hollow output shaft, allowing direct mounting onto driven shafts without couplings. This design reduces installation complexity and saves space in machinery layouts.

  2. Advanced Niemann Tooth Profile

    The concave-convex Niemann gear design offers greater tooth contact area and oil film retention, minimizing wear and increasing operational efficiency. It ensures smooth, low-noise operation, even under load.

  3. Built-In Self-Locking Safety

    With a low lead-angle worm gear, the SCUA Series prevents reverse motion, delivering inherent mechanical holding power without additional braking mechanisms—ideal for systems requiring position stability.

  4. Compact and Durable Structure

    Despite its small size, the SCUA Series is built with hardened alloy steel worm shafts and high-strength bronze worm wheels, offering durability and reliable performance under light to moderate loads.

  5. Simplified Maintenance

    Standard splash lubrication using Klüber SYNTHESO HT or SYNTH GH6 synthetic oil provides continuous gear protection. Grease nipples and easy-access filler/drain ports make routine maintenance quick and efficient.

  6. Standardized Dimensions (JIS)

    All mounting surfaces and shaft fits comply with JIS B1301-1976 tolerances, ensuring smooth integration into existing machinery and easy interchangeability.


Typical Specifications

 

Specification

 

SCUA Series

 

Shaft Orientation Horizontal (input), hollow output
Center Distance (mm) 65, 80, 100, 125, 160
Reduction Ratios (iₙ) 5, 6.3, 8, 10, 12.5, 16, 20, 25, 31.5, 40, 50
Rated Output Torque (T₂N, Nm) 180–1,000 Nm (size-dependent)
Max Input Speed (n₁, min⁻¹) Up to 1,800
Efficiency (η) Up to 90%
Lubrication Splash (standard, Klüber oil)
Housing Material Cast iron
Operating Temperature –10 °C to +40 °C
Protection Class IP54 (standard)
 

Applications

  • Compact Conveyors: Direct mounting with minimal installation space.

  • Packaging & Labeling Equipment: Quiet, stable operation with hollow shaft convenience.

  • Automation Systems: Precise low-speed torque for light-duty drives.

  • Small Hoists & Lifters: Self-locking for secure positioning.

  • Medical & Laboratory Devices: Low-vibration, clean performance in sensitive settings.


Why Choose the SCUA Series?

 

  • Direct Hollow Shaft Output: Reduces the need for additional couplings or adapters.

  • High Efficiency in Small Form Factor: Niemann profile ensures smooth torque transfer.

  • Inherent Safety: Self-locking feature supports vertical or hold-position needs.

  • Low Maintenance: Splash lubrication and easy-access service points simplify upkeep.

  • Reliable Support: Fully backed by Melink Automation and MHI HASEG’s technical expertise.

For sizing assistance, drawings, and performance details, contact Melink Automation, your trusted distributor of the MHI HASEG Worm Gear Reducer SCUA Series.

 


 

MHI HASEG Worm Gear Reducer SCUA  Series Size:125~250(Output Shaft Arrangement:Left)

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
125 160 200 225 250
Output Shaft Arrangement:Left 315 SCUA125LR-315 SCUA160LR-315 SCUA200LR-315 SCUA225LR-315 SCUA250LR-315
630 SCUA125LR-630 SCUA160LR-630 SCUA200LR-630 SCUA225LR-630 SCUA250LR-630
1000 SCUA125LR-1000 SCUA160LR-1000 SCUA200LR-1000 SCUA225LR-1000 SCUA250LR-1000
1250 SCUA125LR-1250 SCUA160LR-1250 SCUA200LR-1250 SCUA225LR-1250 SCUA250LR-1250
1600 SCUA125LR-1600 SCUA160LR-1600 SCUA200LR-1600 SCUA225LR-1600 SCUA250LR-1600

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
125 160 200 225 250
Output Shaft Arrangement:Left 315 SCUA125LL-315 SCUA160LL-315 SCUA200LL-315 SCUA225LL-315 SCUA250LL-315
630 SCUA125LL-630 SCUA160LL-630 SCUA200LL-630 SCUA225LL-630 SCUA250LL-630
1000 SCUA125LL-1000 SCUA160LL-1000 SCUA200LL-1000 SCUA225LL-1000 SCUA250LL-1000
1250 SCUA125LL-1250 SCUA160LL-1250 SCUA200LL-1250 SCUA225LL-1250 SCUA250LL-1250
1600 SCUA125LL-1600 SCUA160LL-1600 SCUA200LL-1600 SCUA225LL-1600 SCUA250LL-1600

 

MHI HASEG Worm Gear Reducer SCUA  Series Size:125~250(Output Shaft Arrangement:Right)

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
125 160 200 225 250
Output Shaft Arrangement:Right 315 SCUA125RR-315 SCUA160RR-315 SCUA200RR-315 SCUA225RR-315 SCUA250RR-315
630 SCUA125RR-630 SCUA160RR-630 SCUA200RR-630 SCUA225RR-630 SCUA250RR-630
1000 SCUA125RR-1000 SCUA160RR-1000 SCUA200RR-1000 SCUA225RR-1000 SCUA250RR-1000
1250 SCUA125RR-1250 SCUA160RR-1250 SCUA200RR-1250 SCUA225RR-1250 SCUA250RR-1250
1600 SCUA125RR-1600 SCUA160RR-1600 SCUA200RR-1600 SCUA225RR-1600 SCUA250RR-1600

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
125 160 200 225 250
Output Shaft Arrangement:Right 315 SCUA125RL-315 SCUA160RL-315 SCUA200RL-315 SCUA225RL-315 SCUA250RL-315
630 SCUA125RL-630 SCUA160RL-630 SCUA200RL-630 SCUA225RL-630 SCUA250RL-630
1000 SCUA125RL-1000 SCUA160RL-1000 SCUA200RL-1000 SCUA225RL-1000 SCUA250RL-1000
1250 SCUA125RL-1250 SCUA160RL-1250 SCUA200RL-1250 SCUA225RL-1250 SCUA250RL-1250
1600 SCUA125RL-1600 SCUA160RL-1600 SCUA200RL-1600 SCUA225RL-1600 SCUA250RL-1600

 


 

MHI HASEG Worm Gear Reducer SCUA  Series Size:280~400(Output Shaft Arrangement:Left)

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
280 320 360 400
Output Shaft Arrangement:Left 315 SCUA280LR-315 SCUA320LR-315 SCUA360LR-315 SCUA400LR-315
630 SCUA280LR-630 SCUA320LR-630 SCUA360LR-630 SCUA400LR-630
1000 SCUA280LR-1000 SCUA320LR-1000 SCUA360LR-1000 SCUA400LR-1000
1250 SCUA280LR-1250 SCUA320LR-1250 SCUA360LR-1250 SCUA400LR-1250
1600 SCUA280LR-1600 SCUA320LR-1600 SCUA360LR-1600 SCUA400LR-1600

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
280 320 360 400
Output Shaft Arrangement:Left 315 SCUA280LL-315 SCUA320LL-315 SCUA360LL-315 SCUA400LL-315
630 SCUA280LL-630 SCUA320LL-630 SCUA360LL-630 SCUA400LL-630
1000 SCUA280LL-1000 SCUA320LL-1000 SCUA360LL-1000 SCUA400LL-1000
1250 SCUA280LL-1250 SCUA320LL-1250 SCUA360LL-1250 SCUA400LL-1250
1600 SCUA280LL-1600 SCUA320LL-1600 SCUA360LL-1600 SCUA400LL-1600

 

MHI HASEG Worm Gear Reducer SCUA  Series Size:280~400(Output Shaft Arrangement:Right)

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
280 320 360 400
Output Shaft Arrangement:Right 315 SCUA280RR-315 SCUA320RR-315 SCUA360RR-315 SCUA400RR-315
630 SCUA280RR-630 SCUA320RR-630 SCUA360RR-630 SCUA400RR-630
1000 SCUA280RR-1000 SCUA320RR-1000 SCUA360RR-1000 SCUA400RR-1000
1250 SCUA280RR-1250 SCUA320RR-1250 SCUA360RR-1250 SCUA400RR-1250
1600 SCUA280RR-1600 SCUA320RR-1600 SCUA360RR-1600 SCUA400RR-1600

 

SCUA Gear Ratio: 315~1600 MHI HASEG Worm Gear Reducer SCUA  Series Size
280 320 360 400
Output Shaft Arrangement:Right 315 SCUA280RL-315 SCUA320RL-315 SCUA360RL-315 SCUA400RL-315
630 SCUA280RL-630 SCUA320RL-630 SCUA360RL-630 SCUA400RL-630
1000 SCUA280RL-1000 SCUA320RL-1000 SCUA360RL-1000 SCUA400RL-1000
1250 SCUA280RL-1250 SCUA320RL-1250 SCUA360RL-1250 SCUA400RL-1250
1600 SCUA280RL-1600 SCUA320RL-1600 SCUA360RL-1600 SCUA400RL-1600

 

 

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  • The MHI HASEG Worm Gear Reducer SCUA100L-310 provides robust performance for heavy-duty industrial applications. With its high torque capability, significant reduction ratio, and durable construction, it is well-suited for a range of demanding environments. Its efficient performance and ease of maintenance make it a valuable component for machinery and automated systems.

  • The MHI HASEG Worm Gear Reducer SCUA100R-310 is designed for superior performance in industrial applications requiring reliable power transmission. This gear reducer is renowned for its durability and efficiency, making it suitable for demanding environments.