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Home > Products > Niemann Worm Gear Units > MHI HASEG Worm Gear Reducer SOHW Series

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MHI HASEG Worm Gear Reducer SOHW Series

The MHI HASEG Worm Gear Reducer SOHW Series is a high-performance, single-stage vertical shaft reducer designed for high-torque applications where compact vertical installation and self-locking safety are essential. Featuring MHI HASEG’s signature Niemann tooth profile, the SOHW Series combines quiet operation, excellent efficiency, and robust load capacity, making it ideal for mixers, lifting equipment, and vertical conveying systems.

MHI HASEG Worm Gear Unit-2.png

 

Key Features

  1. Vertical Shaft Configuration for Space-Constrained Applications

    The SOHW Series is engineered for installations requiring a vertical input or output shaft, allowing integration into vertically aligned systems such as agitators, hoists, or elevator mechanisms.

  2. Advanced Niemann Tooth Profile

    MHI HASEG’s concave-convex tooth geometry ensures uniform load distribution, superior oil film retention, and reduced tooth surface stress. This leads to smoother power transmission, improved wear resistance, and higher operational efficiency.

  3. Reliable Self-Locking Function

    The SOHW Series offers inherent self-locking capability thanks to its low lead-angle worm gear design, preventing back-driving and providing mechanical holding without the need for external braking systems.

  4. Durable and Precise Construction

    Built with hardened alloy steel worm shafts and high-grade bronze worm wheels, the SOHW Series offers excellent resistance to shock loads, long service life, and precise speed control with minimal backlash.

  5. Efficient Lubrication & Maintenance Design

    Splash lubrication using Klüber SYNTHESO HT or GH6 ensures optimal gear protection. Grease nipples for bearings and accessible filler and drain plugs simplify maintenance procedures.

Typical Specifications

Specification

 SOHW Series
Shaft Orientation Vertical (input or output shaft)
Center Distance (mm) 65, 80, 99, 100, 125, 160, 200, 225, 250
Reduction Ratios (iₙ) 5, 6.3, 8, 10, 12.5, 16, 20, 25, 31.5, 40, 50
Rated Output Torque (T₂N, Nm) Up to 20,000 Nm (size-dependent)
Max Input Speed (n₁, min⁻¹) Up to 1,800
Efficiency (η) Up to 90%
Lubrication Splash lubrication (standard)
Operating Temperature –10 °C to +40 °C
Protection Class IP54 (standard)
 

Applications

  • Vertical Mixers & Agitators: Smooth, quiet torque transmission with space-efficient installation.

  • Hoists & Lifting Equipment: Self-locking capability ensures safety and stability under load.

  • Elevators & Conveyor Systems: Compact vertical reducers for clean and efficient motion.

  • Packaging & Food Processing: Hygienic, quiet operation and reliable torque handling.

  • Textile & Chemical Equipment: Low-noise, stable performance in vertically mounted systems.

Why Choose the SOHW Series?

 

  • Compact Vertical Design: Ideal for vertically constrained or upright-mounted equipment.

  • Efficient & Quiet: High-performance tooth profile for smooth, low-vibration motion.

  • Durable & Reliable: Built with premium materials for long service life under heavy loads.

  • Low Maintenance: Easily accessible lubrication and inspection features.

  • Backed by Experts: Supported by Melink Automation and MHI HASEG’s global engineering expertise.

For detailed sizing, torque specifications, or selection guidance, contact Melink Automation, your distributor of the MHI HASEG Worm Gear Reducer SOHW Series.

 

 

MHI HASEG Worm Gear Reducer SOHW  Series Size：65・80・99（Output Shaft Arrangement：Left）

 

SOHW Gear Ratio: 5~50 MHI HASEG Worm Gear Reducer SOHW  Series Size
65 80 99
Output Shaft Arrangement：Left 5 SOHW65L-5 SOHW80L-5 SOHW99L-5
6.3 SOHW65L-6.3 SOHW80L-6.3 SOHW99L-6.3
8 SOHW65L-8 SOHW80L-8 SOHW99L-8
10 SOHW65L-10 SOHW80L-10 SOHW99L-10
12.5 SOHW65L-12.5 SOHW80L-12.5 SOHW99L-12.5
16 SOHW65L-16 SOHW80L-16 SOHW99L-16
20 SOHW65L-20 SOHW80L-20 SOHW99L-20
25 SOHW65L-25 SOHW80L-25 SOHW99L-25
31.5 SOHW65L-31.5 SOHW80L-31.5 SOHW99L-31.5
40 SOHW65L-40 SOHW80L-40 SOHW99L-40
50 SOHW65L-50 SOHW80L-50 SOHW99L-50

 

MHI HASEG Worm Gear Reducer SOHW  Series Size：65・80・99（Output Shaft Arrangement：Right）

 

SOHW Gear Ratio: 5~50 MHI HASEG Worm Gear Reducer SOHW  Series Size
65 80 99
Output Shaft Arrangement：Right 5 SOHW65R-5 SOHW80R-5 SOHW99R-5
6.3 SOHW65R-6.3 SOHW80R-6.3 SOHW99R-6.3
8 SOHW65R-8 SOHW80R-8 SOHW99R-8
10 SOHW65R-10 SOHW80R-10 SOHW99R-10
12.5 SOHW65R-12.5 SOHW80R-12.5 SOHW99R-12.5
16 SOHW65R-16 SOHW80R-16 SOHW99R-16
20 SOHW65R-20 SOHW80R-20 SOHW99R-20
25 SOHW65R-25 SOHW80R-25 SOHW99R-25
31.5 SOHW65R-31.5 SOHW80R-31.5 SOHW99R-31.5
40 SOHW65R-40 SOHW80R-40 SOHW99R-40
50 SOHW65R-50 SOHW80R-50 SOHW99R-50

 

SOHW Gear Ratio: 5~50 MHI HASEG Worm Gear Reducer SOHW  Series Size
65 80 99
  5 SOHW65B-5 SOHW80B-5 SOHW99B-5
6.3 SOHW65B-6.3 SOHW80B-6.3 SOHW99B-6.3
8 SOHW65B-8 SOHW80B-8 SOHW99B-8
10 SOHW65B-10 SOHW80B-10 SOHW99B-10
12.5 SOHW65B-12.5 SOHW80B-12.5 SOHW99B-12.5
16 SOHW65B-16 SOHW80B-16 SOHW99B-16
20 SOHW65B-20 SOHW80B-20 SOHW99B-20
25 SOHW65B-25 SOHW80B-25 SOHW99B-25
31.5 SOHW65B-31.5 SOHW80B-31.5 SOHW99B-31.5
40 SOHW65B-40 SOHW80B-40 SOHW99B-40
50 SOHW65B-50 SOHW80B-50 SOHW99B-50

 

 

MHI HASEG Worm Gear Reducer SOHW  Series Size：100~250（Output Shaft Arrangement：Left）

 

SOHW Gear Ratio: 5~50 MHI HASEG Worm Gear Reducer SOHW  Series Size
100 125 160 200 225 250
Output Shaft Arrangement：Left 5 SOHW100L-5 SOHW125L-5 SOHW160L-5 SOHW200L-5 SOHW225L-5 SOHW250L-5
6.3 SOHW100L-6.3 SOHW125L-6.3 SOHW160L-6.3 SOHW200L-6.3 SOHW225L-6.3 SOHW250L-6.3
8 SOHW100L-8 SOHW125L-8 SOHW160L-8 SOHW200L-8 SOHW225L-8 SOHW250L-8
10 SOHW100L-10 SOHW125L-10 SOHW160L-10 SOHW200L-10 SOHW225L-10 SOHW250L-10
12.5 SOHW100L-12.5 SOHW125L-12.5 SOHW160L-12.5 SOHW200L-12.5 SOHW225L-12.5 SOHW250L-12.5
16 SOHW100L-16 SOHW125L-16 SOHW160L-16 SOHW200L-16 SOHW225L-16 SOHW250L-16
20 SOHW100L-20 SOHW125L-20 SOHW160L-20 SOHW200L-20 SOHW225L-20 SOHW250L-20
25 SOHW100L-25 SOHW125L-25 SOHW160L-25 SOHW200L-25 SOHW225L-25 SOHW250L-25
31.5 SOHW100L-31.5 SOHW125L-31.5 SOHW160L-31.5 SOHW200L-31.5 SOHW225L-31.5 SOHW250L-31.5
40 SOHW100L-40 SOHW125L-40 SOHW160L-40 SOHW200L-40 SOHW225L-40 SOHW250L-40
50 SOHW100L-50 SOHW125L-50 SOHW160L-50 SOHW200L-50 SOHW225L-50 SOHW250L-50

 

MHI HASEG Worm Gear Reducer SOHW  Series Size：100~250（Output Shaft Arrangement：Right）

 

SOHW Gear Ratio: 5~50 MHI HASEG Worm Gear Reducer SOHW  Series Size
100 125 160 200 225 250
Output Shaft Arrangement：Right 5 SOHW100R-5 SOHW125R-5 SOHW160R-5 SOHW200R-5 SOHW225R-5 SOHW250R-5
6.3 SOHW100R-6.3 SOHW125R-6.3 SOHW160R-6.3 SOHW200R-6.3 SOHW225R-6.3 SOHW225R-6.3
8 SOHW100R-8 SOHW125R-8 SOHW160R-8 SOHW200R-8 SOHW225R-8 SOHW225R-8
10 SOHW100R-10 SOHW125R-10 SOHW160R-10 SOHW200R-10 SOHW225R-10 SOHW225R-10
12.5 SOHW100R-12.5 SOHW125R-12.5 SOHW160R-12.5 SOHW200R-12.5 SOHW225R-12.5 SOHW225R-12.5
16 SOHW100R-16 SOHW125R-16 SOHW160R-16 SOHW200R-16 SOHW225R-16 SOHW225R-16
20 SOHW100R-20 SOHW125R-20 SOHW160R-20 SOHW200R-20 SOHW225R-20 SOHW225R-20
25 SOHW100R-25 SOHW125R-25 SOHW160R-25 SOHW200R-25 SOHW225R-25 SOHW225R-25
31.5 SOHW100R-31.5 SOHW125R-31.5 SOHW160R-31.5 SOHW200R-31.5 SOHW225R-31.5 SOHW225R-31.5
40 SOHW100R-40 SOHW125R-40 SOHW160R-40 SOHW200R-40 SOHW225R-40 SOHW225R-40
50 SOHW100R-50 SOHW125R-50 SOHW160R-50 SOHW200R-50 SOHW225R-50 SOHW225R-50

 

SOHW Gear Ratio: 5~50 MHI HASEG Worm Gear Reducer SOHW  Series Size
100 125 160 200 225 250
  5 SOHW100B-5 SOHW125B-5 SOHW160B-5 SOHW200B-5 SOHW225B-5 SOHW250B-5
6.3 SOHW100B-6.3 SOHW125B-6.3 SOHW160B-6.3 SOHW200B-6.3 SOHW225B-6.3 SOHW250B-6.3
8 SOHW100B-8 SOHW125B-8 SOHW160B-8 SOHW200B-8 SOHW225B-8 SOHW250B-8
10 SOHW100B-10 SOHW125B-10 SOHW160B-10 SOHW200B-10 SOHW225B-10 SOHW250B-10
12.5 SOHW100B-12.5 SOHW125B-12.5 SOHW160B-12.5 SOHW200B-12.5 SOHW225B-12.5 SOHW250B-12.5
16 SOHW100B-16 SOHW125B-16 SOHW160B-16 SOHW200B-16 SOHW225B-16 SOHW250B-16
20 SOHW100B-20 SOHW125B-20 SOHW160B-20 SOHW200B-20 SOHW225B-20 SOHW250B-20
25 SOHW100B-25 SOHW125B-25 SOHW160B-25 SOHW200B-25 SOHW225B-25 SOHW250B-25
31.5 SOHW100B-31.5 SOHW125B-31.5 SOHW160B-31.5 SOHW200B-31.5 SOHW225B-31.5 SOHW250B-31.5
40 SOHW100B-40 SOHW125B-40 SOHW160B-40 SOHW200B-40 SOHW225B-40 SOHW250B-40
50 SOHW100B-50 SOHW125B-50 SOHW160B-50 SOHW200B-50 SOHW225B-50 SOHW250B-50

 
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  • The MHI HASEG Worm Gear Reducer SOHW65L-5 offers a balance of durability, efficiency, and versatility. Its high reduction ratio and compact design make it suitable for various industrial applications, from material handling to automation systems. With reliable performance and low maintenance needs, the SOHW65L-5 is a valuable component for enhancing machinery and system efficiency.

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  • The MHI HASEG Worm Gear Reducer SOHW65R-5 is a high-efficiency, durable, and compact gear reducer designed for a variety of industrial applications. With its advanced features and robust construction, it ensures efficient power transmission, reduced energy consumption, and long-term reliability. Ideal for use in precision machinery, steel rolling machinery, semiconductor manufacturing equipment, the aerospace industry, rubber processing machinery, printing machinery, and textile machinery, this gear reducer is an excellent choice for enhancing operational efficiency and productivity.

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