Описание
EP-NMRV-E040 Aluminium Coaxial Worm Gearbox — Overview
The EP-NMRV-E040 is a coaxial mid-range aluminium worm gearbox and a compact coaxial unit in the NMRV-E coaxial series, built around a 040 mm worm gear centre distance. The defining characteristic of the NMRV-E series is its coaxial (inline) output configuration: unlike the standard NMRV040 where the output shaft exits at 90 degrees to the input, the NMRV-E040 has both the motor input and the output shaft on the same axis. This inline layout eliminates lateral shaft offset, enabling significantly more compact drive assemblies for inline pump drives, compact mixer trains, automated door systems, and machinery with tight width. The unit retains the identical worm set, IEC-standard hollow bore input (56B5, 63B14, 71B14, 71B5), and maximum output torque (400 Nm) as the right-angle NMRV040 — only the output direction changes. With die-cast aluminium A360 housing, IP65 shaft sealing, and 5–100:1 ratio range, the EP-NMRV-E040 is engineered for inline drive layouts on pump stations and compact process machinery across Australia and international markets. All six mounting positions are supported, giving inline drive designers complete layout flexibility.
Technical Specifications — EP-NMRV-E040
General Specifications
| Parameter | Specification |
|---|---|
| Model Number | EP-NMRV-E040 |
| Series | NMRV-E — Hollow bore IEC flange input, coaxial inline output |
| Centre Distance | 040 mm |
| Output Configuration | Coaxial / Inline — motor and output on same axis |
| Max Output Torque | 400 Nm |
| Reduction Ratios | 5–100:1 |
| Input Bore Diameter | 9 / 11 mm |
| Compatible IEC Flanges | 56B5, 63B14, 71B14, 71B5 |
| Output Shaft Diameter | 18 mm |
| Max Recommended Input Power | 0.12 kW |
| Housing Material | Die-cast aluminium alloy A360 |
| Worm Wheel Material | Phosphor bronze |
| Worm Shaft Material | 20CrMnTi case-hardened steel, ground |
| Surface Treatment | Baked enamel paint (RAL 5010 blue) |
| Lubricant | ISO VG 220 worm gear oil, ~0.20 L |
| IP Rating | IP65 (shaft seals standard) |
| Ambient Temperature | -10°C to +40°C standard; up to +60°C with synthetic oil |
| Max Input Speed | 1,400 rpm (recommended); 1,800 rpm (max) |
| Approx. Weight | ~2.8 kg |
| Mounting Positions | B3, B6, B7, B8, V5, V6 |
| Output Configurations | Coaxial solid shaft (standard) / Output flange (FL) |
| Note | Double output shaft (DZ) not available in E (coaxial) series |
| Standards | ISO 9001, CE marking, IEC 60034 motor compatibility |
Performance Selection Data (1,400 rpm Input)
| Ratio (i) | Output Speed (r/min) | Output Torque (Nm) | Input Power (kW) |
|---|---|---|---|
| 7.5:1 | 187 | 400 | 0.12 |
| 10:1 | 140 | 430 | 0.12 |
| 15:1 | 93 | 470 | 0.12 |
| 20:1 | 70 | 500 | 0.12 |
| 30:1 | 47 | 540 | 0.12 |
| 50:1 | 28 | 560 | 0.12 |
Core Features & Benefits
◯Coaxial Inline Output — Space-Saving Drive Layout
The defining feature of the EP-NMRV-E040: motor and output shaft aligned on the same axis. This eliminates the 90-degree lateral projection of a standard right-angle worm gearbox — reducing drive assembly width by up to 150 mm and enabling compact inline machine layouts in robotics, packaging, and conveyor applications.
△IEC-Standard Hollow Bore Input (56B5, 63B14, 71B14, 71B5)
Hollow bore IEC input with motor flanges 56B5, 63B14, 71B14, 71B5 allows direct motor mounting without adaptors. Compatible with standard AC motors, servo motors, and stepper motors — simplifying procurement and reducing commissioning time.
◆Corrosion-Resistant Die-Cast Aluminium Housing
A360 die-cast aluminium provides inherent corrosion resistance for food processing, pharmaceutical, coastal, and humid industrial environments — without the rust risk of cast iron. Smooth baked enamel surface is easy to clean in washdown zones.
■Identical Torque Rating to Right-Angle NMRV
The coaxial output configuration does not reduce torque capacity. The EP-NMRV-E040 delivers the same 400 Nm maximum output torque as the standard NMRV040, using the same precision-ground worm set and phosphor bronze wheel.
▶Six Mounting Positions — Full Orientation Flexibility
B3, B6, B7, B8, V5, and V6 mounting positions are all supported, enabling horizontal, vertical, and angled inline drive arrangements. The coaxial configuration is particularly effective in V5/V6 vertical orientations where a right-angle drive would require a 90-degree shaft offset fitting.
●Static Self-Locking at Ratios ≥ 40:1
At gear ratios of 40:1 and above, worm geometry provides static self-locking — preventing back-drive under static load without an external brake. This property is identical to the right-angle NMRV040 as the worm set is unchanged.
EP-NMRV-E040 (Coaxial) vs EP-NMRV040 (Right-Angle) — When to Choose Each
The NMRV-E040 and NMRV040 are mechanically equivalent units sharing the same worm set, torque ratings, and IEC input flanges. The only difference is output shaft direction. Use this table to determine which configuration suits your machine layout.
| Feature | EP-NMRV-E040 (Coaxial / Inline) | EP-NMRV040 (Right-Angle) |
|---|---|---|
| Output Direction | Coaxial / Inline — same axis as input | 90-degree right-angle to input |
| Drive Assembly Width | Narrower — no lateral shaft offset | Wider — output shaft projects laterally |
| Best Application | Inline drive layouts, compact machine frames | Right-angle drives, standard layouts |
| Output Torque | Up to 400 Nm (identical) | Up to 400 Nm (identical) |
| IEC Flange Input | 56B5, 63B14, 71B14, 71B5 (same) | Same flanges (hollow bore IEC) |
| Double Output Shaft (DZ) | Not available (coaxial geometry) | Available (DZ suffix) |
| Housing Material | Die-cast aluminium A360 (same) | Die-cast aluminium A360 (same) |
| Weight | ~2.8 kg | ~2.8 kg (approx same) |
| IP Rating | IP65 standard (same) | IP65 standard (same) |
| Self-Locking | Identical — worm set unchanged | Identical — same worm set |
Application Sectors — EP-NMRV-E040
The EP-NMRV-E040 coaxial worm gearbox is ideally suited to the following industries and application types where an inline drive arrangement is preferred or required.
⚘ Inline Pump Stations
Suitable inline worm gearbox for pump stations.
⚙ Compact Mixer Trains
Suitable coaxial worm reducer for compact mixer trains.
⚚ Automated Door Systems
Suitable NMRV-E worm gearbox automated door systems.
⚒ Inline HVAC Drives
Suitable inline worm reducer HVAC drives.
⚛ Light Conveyor Inline Drives
Suitable coaxial aluminium worm gearbox light conveyor.
Selection Guide, Mounting Positions & Shaft Details
How to Select the Correct Ratio
- Calculate required output torque: M₂ = 9,550 × P (kW) / n₂ (rpm), multiplied by service factor (fs = 1.0–2.5).
- Find your ratio: i = n_motor / n_output. Select the closest available ratio from 5–100:1.
- Confirm torque capacity: The selected ratio’s rated torque must exceed M₂ × fs. If not, step up to EP-NMRV-E050.
- Note on coaxial layout: In the NMRV-E series the output shaft and motor shaft are coaxial. Ensure your machine layout can accommodate the longer axial assembly (motor + gearbox length along one axis) compared to the compact width of a right-angle unit.
Input & Output Shaft Details
Input: Hollow bore 9 / 11 mm | IEC flanges: 56B5, 63B14, 71B14, 71B5 | Tolerance: H7
Output: Coaxial solid shaft 18 mm with keyway — on the same axis as the motor input shaft.
18 mm solid shaft with keyway, coaxial with input. Default supply.
Flanged coaxial output for direct bolt-on connection. Suffix: FL.
Double output shaft (DZ) is NOT available in the NMRV-E coaxial series due to the housing geometry.
Mounting Positions
| Position | Description | Shaft Orientation | Oil Level Note |
|---|---|---|---|
| B3 | Horizontal foot mount | Inline horizontal — motor behind, output in front | Standard fill level — default |
| B6 | Foot mount, output shaft down | Inline vertical downward | Reduce oil by ~15% |
| B7 | Foot mount, output shaft up | Inline vertical upward | Increase oil by ~15% |
| B8 | Foot mount, reversed | Inline horizontal reversed | Standard fill level |
| V5 | Flange mount, shaft down | Inline vertical downward | Reduce oil — see NMRV-E lube guide |
| V6 | Flange mount, shaft up | Inline vertical upward | Increase oil — see NMRV-E lube guide |
Important: For NMRV-E V5/V6 vertical mounting, use the NMRV-E lubrication diagram (not the standard NMRV diagram) to set the correct oil fill level, as the internal oil distribution differs in the coaxial configuration.
Frequently Asked Questions — EP-NMRV-E040
▶ Why choose the EP-NMRV-E040 coaxial unit for inline pump drives?
Inline pump drives benefit from the NMRV-E040’s coaxial layout because the motor, gearbox, and pump shaft are all aligned on a single axis. This eliminates the 90-degree offset bracket required with a standard right-angle gearbox, simplifying mounting, improving shaft alignment, and reducing vibration transmission to the pump shaft.
▶ What IEC motor flanges are compatible with the EP-NMRV-E040?
The EP-NMRV-E040 accepts IEC flanges 56B5, 63B14, 71B14, and 71B5, covering standard AC motors from 0.09 kW to 0.12 kW. The hollow bore accepts 9 mm and 11 mm motor shafts. Servo and stepper motor adaptor kits are available on request.
▶ What is the output torque capacity of the EP-NMRV-E040?
The EP-NMRV-E040 delivers identical output torque to the standard NMRV040 — up to 400 Nm at 1,400 rpm input. The coaxial output configuration does not affect the worm set torque rating; only the output shaft direction differs from the right-angle NMRV040.
▶ How does the coaxial layout of the NMRV-E040 benefit automated door systems?
Automated sliding door drives benefit from the NMRV-E040’s compact inline footprint because the motor and output shaft face the same direction — enabling a sleek, low-profile drive unit that fits inside standard door frame profiles. The 90-degree right-angle offset of a standard NMRV would project the drive beyond the frame boundary.
▶ What reduction ratios are available and which suits compact door drives?
Available ratios: 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, and 100. For automated door drives, ratios of 20–50:1 typically provide the right balance of opening speed and torque for residential and light commercial sliding door systems. Self-locking at 40:1+ provides secure hold-open under wind load.
▶ Is the EP-NMRV-E040 suitable for outdoor HVAC shaft drive installations?
Yes. The die-cast aluminium housing with baked enamel paint provides UV and weather resistance for outdoor HVAC applications. IP65 shaft seals protect against rain and dust. Specify synthetic ISO VG 220 oil for outdoor installations where summer temperatures may exceed 40°C.
Customer Reviews
★★★★★
“The EP-NMRV-E040 coaxial units drive our inline pump stations at our irrigation infrastructure project. Aligning motor, gearbox, and pump shaft on one axis simplified installation enormously — no bracket, no 90-degree offset. Running flawlessly in the harsh Queensland heat.”
Claire Watson — Pump Systems Australia
Australia
★★★★★
“Used in the inline drive mechanisms of our commercial sliding door systems. The coaxial layout fits perfectly inside the door header profile without any lateral protrusion. Self-locking at 40:1 holds the door securely without motor power — ideal for energy-saving applications.”
Javier Morales — Door Automation Systems
Mexico
★★★★☆
“Installed on inline damper actuator drives in our commercial HVAC systems. The compact coaxial envelope fits within our standard duct-side mounting bracket. Very low noise is essential for occupied building installations — these units are impressively quiet.”
Takeshi Yamamoto — HVAC Engineering Co.
Japan
Related Products & Accessories
⚙ Compatible Motors
IEC B5/B14 flange AC motors (230V single-phase, 380V three-phase) for frames: 56B5, 63B14, 71B14, 71B5.
Servo and stepper motor adaptor kits for hollow bore input.
VFD-compatible AC motors for variable-speed inline drives.
⚒ Output Options
■ Coaxial solid shaft (standard, 18 mm)
■ Coaxial output flange (FL suffix)
◆ Note: DZ double shaft not available in E series
■ Torque arm for torque reaction mounting
■ Dust cover for input shaft end
◆ Related Series
■ EP-NMRV040 — same unit, right-angle output
■ EP-NRV-E040 — solid input shaft, coaxial output
■ EP-NRV040 — solid input, right-angle output
■ EP-NMRV-E050 — next frame size up
Ready to Order the EP-NMRV-E040?
Request a quote, technical selection support, or ask about OEM and distributor partnership opportunities for Australian and international markets.
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