NMRV Compact Aluminum Worm Gearbox
Need product advice? Ask an expert
Got questions?
Feel free to get in touch
Technical Specifications
NMRV Worm Gear Reducer delivers dependable high-torque reduction in a compact footprint. With flexible mounting options, wide ratio coverage, and easy motor coupling, it’s built for fast replacement and straightforward installation. ZPGear supports OEM/ODM customization for shaft size, flange, paint color, nameplate, and packaging—helping you match your equipment and shorten lead time.
Core Performance Parameters
Key operating range and performance data for quick comparison.
- Model Series
- NMRV 030 / 040 / 050 / 063 / 075 / 090 / 110 / 130 / 150
- Gear Ratio Range
- 5:1 to 100:1 (12 standard ratios, custom available)
- Output Torque
- 1.8 N·m ~ 500 N·m
- Input Power
- 0.06 kW ~ 15 kW
- Efficiency
- 60% ~ 90% (decreases with higher ratios)
- Noise Level
- < 65 dB (at 1 m distance)
Mechanical Design & Materials
Materials, sealing, and interface options for durability and compatibility.
Core Components
- Worm: 20CrMnTi alloy steel, carburized & quenched (HRC58–62).
- Worm Wheel: ZCuSn10Pb1 tin bronze for superior wear resistance.
- Housing: ADC12 die-cast aluminum with cooling fins.
Seals & Interfaces
- Sealing: Double-lip oil seal + labyrinth structure (IP65 rated).
- Input: IEC/B5/B14 standard flange for motor compatibility.
- Output: Solid or hollow shaft options available.
Typical Application Scenarios
Common use cases where this gearbox is frequently applied.
NMRV Motor Flange Input Selection Guide
NMRV is the compact motor-flange input configuration in this family. It is intended for layouts where an approved IEC-compatible motor interface and a compact right-angle reducer arrangement are required.
Where NMRV Fits Best
- Compact equipment using a motor-flange input interface.
- Replacement projects that match the existing NMRV frame and mounting arrangement.
- Machines where motor and reducer integration is preferred over a separate shaft coupling.
When NMRV May Not Be the Right Choice
Compare NMRV-VS when an external input shaft is required. Compare NMRV-F when the driven machine requires the specified flange-output interface. Do not order from a family name alone; the frame, motor flange, output interface, ratio, and mounting position must match the approved drawing.
NMRV Model FAQ
What is the main input arrangement of NMRV?
This page describes the compact NMRV configuration with an IEC-compatible motor-flange input interface.
How is NMRV different from NMRV-VS?
NMRV is selected around the motor-flange input interface, while NMRV-VS is selected when an external input-shaft arrangement is required.
Which interfaces must be checked?
Confirm the frame size, motor flange, output shaft or bore, mounting position, fixing points, ratio, and available clearance.
What information supports model confirmation?
Provide the motor specification, required output speed or ratio, load condition, operating schedule, mounting position, and existing drawing or nameplate.
Final selection and installation interfaces must be confirmed against the approved manufacturer drawing.
Engineering Data and Selection Verification
Use the information on this NMRV Compact Aluminum Worm Gearbox page for preliminary comparison. Final dimensions, materials, interfaces and operating limits must be confirmed against the current manufacturer catalog or an approved project drawing before purchase, fabrication or installation.
Data-sheet check: request the current model table and dimensional drawing before completing a selection because this page does not contain a complete tabulated specification.
Required Project Inputs
- Input speed and motor information
- Required output speed or target ratio
- Driven load type, start-stop pattern and operating schedule
- Mounting position, shaft direction and available installation space
- Site environment and maintenance-access requirements
Interfaces to Confirm
- Model size and mounting-hole pattern
- Input and output shaft or bore dimensions
- Flange, keyway, coupling and guarding arrangement
- Shaft center position and surrounding clearance
- Lubrication and inspection access
Reproducible Speed and Ratio Check
Required ratio: input speed ÷ target output speed. Expected output speed: input speed ÷ selected ratio. Record the source of each input value and use consistent units.
This arithmetic check does not confirm torque, power, service factor, temperature, efficiency or life. Ask ZPGear to verify those items from the current manufacturer data for the selected model and operating condition.
Source record: keep the manufacturer name, catalog or drawing number, revision date, selected model size, project inputs and final approval sheet with the order documentation. Send the project information to ZPGear for confirmation.