Worm Gear Nmrv
What is a Worm Gear NMRV?
The NMRV worm gear reducer is a mainstream compact reduction unit in the industrial power transmission sector. Featuring a die-cast aluminum alloy housing and a precision worm gear meshing mechanism, it offers four key advantages-compact size, quiet operation, strong self-locking capability, and ease of installation-making it ideal for a wide range of low-speed, high-torque applications. Manufactured in strict accordance with international ISO standards, every unit undergoes precision grinding, load testing, and noise level verification. Compatible with single-phase/three-phase motors, servo motors, and stepper motors, it is a preferred transmission component for automation systems, conveyor machinery, and light industrial equipment.
Compared to traditional cast-iron models, the NMRV aluminum-cased worm gear reducer is lighter, offers superior heat dissipation, and provides enhanced corrosion resistance. It supports diverse mounting configurations-including vertical, horizontal, flange, and hollow-shaft setups-and offers a comprehensive range of gear ratios to precisely meet varying industrial speed and torque requirements. Combining cost-effectiveness with durability, it is highly regarded by industrial equipment manufacturers both domestically and internationally.
NMRV Worm Reducer
Bore input with IEC flange
NRV Worm Reducer
Steel shaft input
Optional accessories
Square input flange
Output flange - FA, FB, FC, FD
Solid output shaft - Single output shaft, Double output shaft
Extended solid input shaft
Torque arm
- Lightweight and high-strength body, suitable for installation in multiple scenarios: The shell is made of high-quality ADC12 aluminum alloy die-casting. The one-piece molding process has no splicing gaps, is pressure-resistant, impact-resistant, and not easy to deform. Compared with cast iron reducers of the same specification, it is more than 40% lighter than cast iron reducers of the same specification. It does not require complex fixed structures and is suitable for installation in small equipment spaces. It also has excellent anti-oxidation and corrosion resistance, and can operate stably in humid and lightly dusty industrial environments.
- Precision meshing transmission-quiet, efficient, and low-loss: The worm is made of 20CrMnTi alloy steel, subjected to carburizing and quenching, and finished via precision gear grinding; this results in smooth, accurate tooth surfaces and uniform meshing clearance. Operation is characterized by minimal vibration and low noise-with no-load noise levels ≤55 dB-while transmission efficiency is 15% higher than that of standard gear reducers, effectively reducing energy consumption and noise pollution.
- Comprehensive specifications and versatile installation: Covers the full NMRV030–NMRV150 series with a complete range of gear ratios (1:10–1:100); supports various mounting configurations-including hollow shaft, solid shaft, flange, and foot mount-and is compatible with a wide array of drive units such as DC, AC, servo, and stepper motors, offering exceptional versatility.
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Model |
NMRV Worm Gearbox |
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Ratio |
5, 7.5, 10, 15,20, 25, 30, 40, 50, 60, 80, 100 |
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Rated power |
0.06~15kW |
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Output torque |
5N·m - 1800N·m
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| Installation Method |
Horizontal, vertical, flange-mounted, hollow-shaft mounted |
NMRV gearbox structure
Hangzhou ANG Drive Co., Ltd. (ANJO) has been working in the transmission equipment business for 30 years. We have a wide assortment of products like gear reducers, worm gear reducers, and electric motors. You can find our products in machinery manufacturing, logistics, warehousing, new energy, and a lot of other places. We're really strict about quality and can tweak our tech to fit what you need. We've exported our products to over 50 countries and regions and worked with more than 2,000 clients overseas. We help you out from the very beginning with tech advice all the way through installation, so you can count on us to be your go-to partner for transmission equipment worldwide.
Q1: Can the NMRV gear reducer rotate in reverse?
A1: Under standard operating conditions, it supports bidirectional rotation; the reverse self-locking function only engages under conditions involving high gear ratios and heavy loads. Non-self-locking models can be customized to meet specific equipment requirements and suit bidirectional transmission applications.
Q2: What causes oil leakage and excessive noise during reducer operation?
A2: Oil leakage is typically caused by aging seals or overfilling, while excessive noise usually stems from installation misalignment, overloading, or lubricant failure. ANJO products are factory-sealed and pre-filled with the standard amount of lubricant, requiring no frequent maintenance under normal operating conditions; our after-sales team offers one-on-one troubleshooting guidance.
Q3: Can you provide customization for gear ratios, shaft diameters, and mounting specifications?
A3: We offer non-standard customization services. We can tailor gear ratios, output shaft diameters, flange dimensions, and mounting configurations to suit specific equipment operating conditions and transmission requirements, ensuring high precision with short lead times.
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