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EP-NMRV-E130 Aluminium Coaxial Worm Gearbox — Overview
The EP-NMRV-E130 is a extra-large inline aluminium worm gearbox and an extra-large inline unit in the NMRV-E coaxial series, built around a 130 mm worm gear centre distance. The defining characteristic of the NMRV-E series is its coaxial (inline) output configuration: unlike the standard NMRV130 where the output shaft exits at 90 degrees to the input, the NMRV-E130 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 paper mill inline drive trains, heavy gantry crane inline drives, large extruder coaxial systems. The unit retains the identical worm set, IEC-standard hollow bore input (90B5, 100/112B5, 132B5), and maximum output torque (11000 Nm) as the right-angle NMRV130 — only the output direction changes. With die-cast aluminium A360 housing, IP65 shaft sealing, and 7.5–100:1 ratio range, the EP-NMRV-E130 is engineered for paper mills and large-scale inline industrial machinery across Australia and international markets. All six mounting positions are supported, giving inline drive designers complete layout flexibility.
Technical Specifications — EP-NMRV-E130
General Specifications
| Parameter | Specification |
|---|---|
| Model Number | EP-NMRV-E130 |
| Series | NMRV-E — Hollow bore IEC flange input, coaxial inline output |
| Centre Distance | 130 mm |
| Output Configuration | Coaxial / Inline — motor and output on same axis |
| Max Output Torque | 11000 Nm |
| Reduction Ratios | 7.5–100:1 |
| Input Bore Diameter | 38 mm |
| Compatible IEC Flanges | 90B5, 100/112B5, 132B5 |
| Output Shaft Diameter | 60 mm |
| Max Recommended Input Power | 2.2 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, ~3.5 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 | ~42 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 | 8000 | 2.2 |
| 15:1 | 93 | 9000 | 2.2 |
| 20:1 | 70 | 9584 | 2.2 |
| 25:1 | 56 | 10000 | 2.2 |
| 30:1 | 47 | 10400 | 2.2 |
| 40:1 | 35 | 11051 | 2.2 |
| 50:1 | 28 | 11500 | 2.2 |
Core Features & Benefits
◯Coaxial Inline Output — Space-Saving Drive Layout
The defining feature of the EP-NMRV-E130: 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, 100/112B5, 132B5)
Hollow bore IEC input with motor flanges 90B5, 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-E130 delivers the same 11000 Nm maximum output torque as the standard NMRV130, 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 NMRV130 as the worm set is unchanged.
EP-NMRV-E130 (Coaxial) vs EP-NMRV130 (Right-Angle) — When to Choose Each
The NMRV-E130 and NMRV130 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-E130 (Coaxial / Inline) | EP-NMRV130 (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 11000 Nm (identical) | Up to 11000 Nm (identical) |
| IEC Flange Input | 90B5, 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 | ~42 kg | ~42 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-E130
The EP-NMRV-E130 coaxial worm gearbox is ideally suited to the following industries and application types where an inline drive arrangement is preferred or required.
⚘ Paper Mill Inline Trains
Suitable inline worm gearbox paper mill drive train.
⚙ Gantry Crane Inline Drives
Suitable coaxial worm reducer gantry crane inline.
⚚ Large Extruder Coaxial
Suitable NMRV-E worm gearbox large extruder coaxial.
⚒ Cement Inline Conveyors
Suitable inline worm reducer cement conveyor.
⚛ Mining Inline Gear Trains
Suitable extra large coaxial aluminium worm gearbox.
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-E150.
- 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 38 mm | IEC flanges: 90B5, 100/112B5, 132B5 | Tolerance: H7
Output: Coaxial solid shaft 60 mm with keyway — on the same axis as the motor input shaft.
60 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-E130
▶ Why is the EP-NMRV-E130 specified for paper mill inline drives?
Paper mill winding and slitter drives often require inline (coaxial) drive arrangements to align with existing shaft layouts on the machine. The NMRV-E130 delivers up to 11,000 Nm coaxially through a 60 mm output shaft, fitting into paper mill drive trains where the motor and reel shaft must share a common axis within the machine’s roll stand.
▶ What input bore and IEC flange options does the EP-NMRV-E130 offer?
The EP-NMRV-E130 accepts a 38 mm input bore with IEC flanges 90B5, 100/112B5, and 132B5, covering 2.2–7.5 kW motors. For higher power requirements, contact our team for custom flange adaptor options for 160 and 180 frame motors.
▶ How does the coaxial output affect lubrication requirements?
The coaxial output configuration of the NMRV-E130 means the worm shaft, worm wheel, and output shaft are oriented differently within the housing compared to the right-angle NMRV130. The oil fill level for B3 horizontal mounting remains approximately 3.5 litres, but for V5/V6 vertical orientations, refer specifically to the NMRV-E lubrication diagram (not the standard NMRV diagram) for correct fill levels.
▶ What is the service life expectancy of the EP-NMRV-E130?
Under rated load with fs ≥ 1.0, proper ISO VG 220 lubrication, and operating temperature within -10°C to +40°C, the NMRV-E130 is designed for a minimum L10 bearing life of 20,000 hours. The phosphor bronze worm wheel is the primary wear component; lubricant quality and operating temperature are the dominant life factors.
▶ Does the EP-NMRV-E130 offer static self-locking?
Yes. Static self-locking (η < 0.5) is present at gear ratios of 40:1 and above, preventing output back-drive under static load. This is useful for paper mill winding drives that must hold reel tension during emergency stops. Always add a certified external brake for safety-critical load retention applications.
▶ Can the EP-NMRV-E130 be installed horizontally and vertically?
Yes — all six standard mounting positions are available: B3, B6, B7, B8, V5, and V6. In the coaxial E configuration, the motor and output shaft are on the same axis, so the physical installation footprint of the motor-gearbox assembly is elongated axially rather than projecting laterally. This suits both horizontal and vertical shaft orientations.
Customer Reviews
★★★★★
“EP-NMRV-E130 units installed on the inline reel drive arrangements at our newsprint mill. Coaxial output aligns motor and reel shaft on a single axis — eliminating the right-angle bracket that was limiting our roll stand clearance. Torque output at 30:1 is exactly right for our web tension requirement.”
Paul Hartley — Paper Mill Equipment Australia
Australia
★★★★★
“Specified for the inline long-travel drives on our gantry crane systems. The coaxial layout connects motor directly in line with the wheel axle. Self-locking at 40:1 provides secure holding between travel operations. Outstanding reliability over two years of heavy port use.”
Anna Karlsson — Crane Technology Solutions
Sweden
★★★★★
“Our cement raw meal conveyor inline drives use EP-NMRV-E130 units at 30:1 ratio. The coaxial layout keeps the full drive within the conveyor frame width — essential in our narrow cement bay. IP65 sealing handles the fine cement dust well. Very satisfied with performance and durability.”
Carlos Vega — Cement Processing Solutions
Chile
Related Products & Accessories
⚙ Compatible Motors
IEC B5/B14 flange AC motors (230V single-phase, 380V three-phase) for frames: 90B5, 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, 60 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-NMRV130 — same unit, right-angle output
■ EP-NRV-E130 — solid input shaft, coaxial output
■ EP-NRV130 — solid input, right-angle output
■ EP-NMRV-E150 — next frame size up
Ready to Order the EP-NMRV-E130?
Request a quote, technical selection support, or ask about OEM and distributor partnership opportunities for Australian and international markets.
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