Description
EP-NMRV-E110 Aluminium Coaxial Worm Gearbox — Overview
The EP-NMRV-E110 is a large-frame inline aluminium worm gearbox and a large-frame inline unit in the NMRV-E coaxial series, built around a 110 mm worm gear centre distance. The defining characteristic of the NMRV-E series is its coaxial (inline) output configuration: unlike the standard NMRV110 where the output shaft exits at 90 degrees to the input, the NMRV-E110 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 steel mill inline drives, heavy mixer inline shafts, coaxial winch systems, port inline machinery. The unit retains the identical worm set, IEC-standard hollow bore input (90B5, 100/112B14, 100/112B5, 132B5), and maximum output torque (8000 Nm) as the right-angle NMRV110 — only the output direction changes. With die-cast aluminium A360 housing, IP65 shaft sealing, and 7.5–100:1 ratio range, the EP-NMRV-E110 is engineered for steel processing and heavy industrial inline drive trains across Australia and international markets. All six mounting positions are supported, giving inline drive designers complete layout flexibility.
Technical Specifications — EP-NMRV-E110
General Specifications
| Parameter | Specification |
|---|---|
| Model Number | EP-NMRV-E110 |
| Series | NMRV-E — Hollow bore IEC flange input, coaxial inline output |
| Centre Distance | 110 mm |
| Output Configuration | Coaxial / Inline — motor and output on same axis |
| Max Output Torque | 8000 Nm |
| Reduction Ratios | 7.5–100:1 |
| Input Bore Diameter | 28 / 38 mm |
| Compatible IEC Flanges | 90B5, 100/112B14, 100/112B5, 132B5 |
| Output Shaft Diameter | 50 mm |
| Max Recommended Input Power | 1.1 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, ~2.5 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 | ~28 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) |
|---|---|---|---|
| 10:1 | 140 | 4285 | 1.1 |
| 15:1 | 93 | 4905 | 1.1 |
| 20:1 | 70 | 5399 | 1.1 |
| 25:1 | 56 | 5816 | 1.1 |
| 30:1 | 47 | 6181 | 1.1 |
| 40:1 | 35 | 6803 | 1.1 |
| 50:1 | 28 | 7607 | 1.1 |
Core Features & Benefits
◯Coaxial Inline Output — Space-Saving Drive Layout
The defining feature of the EP-NMRV-E110: 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 (90B5, 100/112B14, 100/112B5, 132B5)
Hollow bore IEC input with motor flanges 90B5, 100/112B14, 100/112B5, 132B5 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-E110 delivers the same 8000 Nm maximum output torque as the standard NMRV110, 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 NMRV110 as the worm set is unchanged.
EP-NMRV-E110 (Coaxial) vs EP-NMRV110 (Right-Angle) — When to Choose Each
The NMRV-E110 and NMRV110 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-E110 (Coaxial / Inline) | EP-NMRV110 (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 8000 Nm (identical) | Up to 8000 Nm (identical) |
| IEC Flange Input | 90B5, 100/112B14, 100/112B5, 132B5 (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 | ~28 kg | ~28 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-E110
The EP-NMRV-E110 coaxial worm gearbox is ideally suited to the following industries and application types where an inline drive arrangement is preferred or required.
⚘ Steel Mill Inline Drives
Suitable large frame inline worm gearbox steel mill.
⚙ Heavy Mixer Inline Shafts
Suitable coaxial worm reducer heavy mixer shaft.
⚚ Coaxial Winch Systems
Suitable NMRV-E worm gearbox winch coaxial system.
⚒ Port Inline Machinery
Suitable inline worm reducer port machinery.
⚛ Large Fan Inline Drives
Suitable large coaxial aluminium worm gearbox fan drive.
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 7.5–100:1.
- Confirm torque capacity: The selected ratio’s rated torque must exceed M₂ × fs. If not, step up to EP-NMRV-E130.
- 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 28 / 38 mm | IEC flanges: 90B5, 100/112B14, 100/112B5, 132B5 | Tolerance: H7
Output: Coaxial solid shaft 50 mm with keyway — on the same axis as the motor input shaft.
50 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-E110
▶ What sets the EP-NMRV-E110 apart for steel mill inline drives?
Steel processing lines often require coaxial drive arrangements where the motor, gearbox, and roll shaft must all align on one axis to fit within the machine’s rolling stand structure. The NMRV-E110 delivers up to 8,000 Nm coaxially through a 50 mm output shaft, fitting directly into steel coil line feeders and rolling mill auxiliary inline drives.
▶ What IEC motor flanges are compatible with the EP-NMRV-E110?
The EP-NMRV-E110 accepts IEC flanges 90B5, 100/112B14, 100/112B5, and 132B5, supporting 1.5–5.5 kW motors. The hollow bore accepts 28 mm and 38 mm motor shafts for direct motor coupling without adaptors.
▶ What is the self-locking performance of the EP-NMRV-E110?
Static self-locking (η < 0.5) is present at gear ratios of 40:1 and above in the NMRV-E110. This is identical to the right-angle NMRV110 as the worm set geometry is unchanged. For safety-critical vertical load retention in winch or hoist inline drives, install a certified external holding brake regardless of ratio.
▶ How does the NMRV-E110 thermal performance compare to cast iron in hot steel mills?
The A360 die-cast aluminium housing conducts heat approximately 3× faster than cast iron, keeping operating temperatures 10–15°C lower under equivalent load. For ambient temperatures up to 60°C, use synthetic ISO VG 220 oil. Above 60°C, contact our engineering team for thermal derating calculations.
▶ What are the overall dimensions of the EP-NMRV-E110 coaxial unit?
The NMRV-E110 coaxial housing length (A) is 255 mm with width (B) of 295 mm and height (C) of 170 mm — identical to the standard NMRV110 housing footprint. The additional coaxial output housing adds approximately 60–70 mm to the overall axial length compared to the right-angle version.
▶ What output shaft options are available for the EP-NMRV-E110?
The standard EP-NMRV-E110 features a single 50 mm coaxial solid output shaft with keyway. An output flange (FL suffix) is available for direct bolt-on connection. Note that double output shaft (DZ) configuration is not available in the E (coaxial) series.
Customer Reviews
★★★★★
“The EP-NMRV-E110 drives the inline pinch roll assemblies on our steel slitting line. Coaxial output connects directly to the roll shaft without a right-angle bracket — reducing drive train complexity on our compact rolling stand. 8,000 Nm output handles our full product range including heavy stainless grades.”
Marcus Reid — Steel Processing Industries Pty
Australia
★★★★★
“Integrated into the inline drive train of our large industrial kneaders. The coaxial layout fits within our machine frame without lateral protrusion. Aluminium thermal performance keeps the housing cool even at sustained heavy loads — no external cooling required.”
Pierre Dubois — Heavy Industrial Drives
France
★★★★☆
“Used on inline drive mechanisms of our bulk material handling equipment at our South Island port. Coaxial layout simplifies the drive arrangement. Salt-air environment has had no visible effect on the aluminium housing after eighteen months of operation.”
Hamish McGregor — Port Machinery NZ
New Zealand
Related Products & Accessories
⚙ Compatible Motors
IEC B5/B14 flange AC motors (230V single-phase, 380V three-phase) for frames: 90B5, 100/112B14, 100/112B5, 132B5.
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, 50 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-NMRV110 — same unit, right-angle output
■ EP-NRV-E110 — solid input shaft, coaxial output
■ EP-NRV110 — solid input, right-angle output
■ EP-NMRV-E130 — next frame size up
Ready to Order the EP-NMRV-E110?
Request a quote, technical selection support, or ask about OEM and distributor partnership opportunities for Australian and international markets.
▼ Distributor & OEM partnerships welcome — competitive pricing for volume orders
