توضیحات
EP-NMRV050 Aluminium Worm Gearbox — Overview
The EP-NMRV050 is a high-efficiency aluminium worm gearbox representing a balanced torque-to-size unit in the NMRV series, engineered around a 050 mm worm gear centre distance. Developed to meet growing demand for lightweight, corrosion-resistant drive solutions across bottling lines, printing machinery, and packaging automation, it combines precision-manufactured worm and wheel geometry with a robust die-cast aluminium A360 housing that delivers natural corrosion resistance without the bulk of traditional cast iron. The NMRV050 accepts IEC motor flanges (63B5, 71B14, 71B5, 80B14, 80B5), enabling direct motor-to-gearbox coupling without adaptors — a significant advantage for machine builders seeking compact, efficient drive packages. With output torques up to 800 Nm and reduction ratios from 5–100:1, the EP-NMRV050 reliably serves packaging lines and printing machinery across Australia and international markets. IP65 shaft sealing, six mounting positions, and a smooth baked-enamel finish make it equally at home in food processing washdown areas, outdoor plant rooms, and demanding industrial environments.
Technical Specifications — EP-NMRV050
General Specifications
| Parameter | Specification |
|---|---|
| Model Number | EP-NMRV050 |
| Centre Distance | 50 mm |
| Max Output Torque | 800 Nm |
| Reduction Ratios | 5–100:1 |
| Input Bore Diameter | 11 / 14 mm |
| Output Shaft Diameter | 25 mm |
| Compatible IEC Flanges | 63B5, 71B14, 71B5, 80B14, 80B5 |
| Max Recommended Input Power | 0.18 kW |
| Input Shaft Radial Load (Fri max) | 4840 N |
| 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, ~0.35 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 | ~4.0 kg |
| Mounting Positions | B3, B6, B7, B8, V5, V6 |
| Output Configurations | Solid shaft / Double shaft (DZ) / Output flange (FL) |
| 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 | 650 | 0.18 |
| 10:1 | 140 | 750 | 0.18 |
| 15:1 | 93 | 860 | 0.18 |
| 20:1 | 70 | 950 | 0.18 |
| 30:1 | 47 | 1020 | 0.18 |
| 50:1 | 28 | 1080 | 0.18 |
Core Features & Benefits
◯Corrosion-Resistant Aluminium Housing
Die-cast A360 aluminium provides inherent corrosion resistance ideal for food processing washdown zones, coastal Australian sites, and humid industrial environments. The baked enamel finish adds UV protection for outdoor installations.
△IEC-Standard Motor Mounting (63B5, 71B14, 71B5, 80B14, 80B5)
Hollow bore input with IEC-standard flange (63B5, 71B14, 71B5, 80B14, 80B5) allows direct coupling to AC motors, servos, and stepper motors without separate adaptors, reducing installation time and eliminating alignment problems.
◆Superior Thermal Dissipation
Aluminium’s thermal conductivity (~160 W/m·K) dissipates heat up to 3× faster than cast iron, keeping operating temperatures lower and extending lubricant and seal life in enclosed machine cabinets.
■Six Mounting Positions + Three Output Options
B3, B6, B7, B8, V5, V6 mounting positions combined with solid shaft, double shaft (DZ), and output flange (FL) configurations give machine designers complete layout freedom.
▶Static Self-Locking at High Ratios
At ratios ≥ 40:1, worm geometry provides static self-locking, preventing back-drive under static load without an external brake — simplifying gate actuators, lift platforms, and positioning systems.
●Long Service Life: ≥20,000 Hours L10
Ground worm shafts, precision-hobbed phosphor bronze wheels, and preloaded bearings ensure consistent gear mesh throughout service life, delivering minimum L10 bearing life of 20,000 hours at rated load.
EP-NMRV050 vs Traditional Cast Iron Worm Gearbox
Australian and international machine builders consistently choose aluminium worm gearboxes for their combination of performance, durability, and total cost of ownership advantages over cast iron alternatives.
| Feature | EP-NMRV050 (Aluminium) | Traditional Cast Iron |
|---|---|---|
| Housing Material | Die-cast aluminium A360 | Grey cast iron GG25 |
| Approx. Weight | ~4.0 kg | 30–40% heavier |
| Corrosion Resistance | Excellent — inherent Al₂O₃ oxide layer | Requires coating; prone to rust |
| Thermal Conductivity | ~160 W/m·K — superior heat dissipation | ~50 W/m·K — poor heat dissipation |
| Surface Finish | Smooth baked enamel, easy to clean | Rough cast surface, hard to clean |
| Motor Mounting | Integrated IEC flange (no adaptor) | Often needs separate adaptor plate |
| Noise Level | Low — aluminium damps vibration | Higher — cast iron transmits vibration |
| Food Industry Suitability | High — smooth, corrosion-resistant | Low — porous surface, rust risk |
| IP Rating | IP65 shaft seals standard | IP54–55 typical |
| Price / Performance | Excellent — lower total cost of ownership | Higher initial & lifetime cost |
Application Sectors
The EP-NMRV050 is well suited to the following industries and application types, each benefiting from its compact size, corrosion-resistant housing, and reliable torque output.
⚘ Bottling Lines
Suitable worm gearbox for bottling line conveyors.
⚙ Printing Machinery
Suitable aluminium reducer for packaging automation.
⚚ Packaging Automation
Suitable precision worm reducer for printing machinery.
⚒ Conveyor Systems
Suitable worm gearbox for conveyor systems.
⚛ Mixing Equipment
Suitable worm reducer for industrial mixing.
Selection Guide, Mounting Positions & Shaft Configurations
How to Select the Correct Ratio
- Calculate required output torque: M₂ = 9,550 × P (kW) / n₂ (rpm), then multiply by your service factor (fs = 1.0–2.5 depending on daily duty hours and load class).
- Find your ratio: Divide motor speed (typically 1,400 rpm) by required output speed. Select the closest ratio from: 5–100:1.
- Confirm torque capacity: The selected ratio’s rated torque must exceed M₂ × fs. If not, step up to the EP-NMRV063.
Mounting Positions
| Position | Description | Shaft Orientation | Oil Level Note |
|---|---|---|---|
| B3 | Horizontal foot mount | Horizontal | Standard fill level — default factory supply |
| B6 | Foot mount, output shaft down | Vertical downward | Reduce oil by ~15% |
| B7 | Foot mount, output shaft up | Vertical upward | Increase oil by ~15% |
| B8 | Foot mount, output shaft horizontal (180°) | Horizontal reversed | Standard fill level |
| V5 | Flange mount, shaft down | Vertical downward | Reduce oil — check lubrication guide |
| V6 | Flange mount, shaft up | Vertical upward | Increase oil — check lubrication guide |
Output Shaft Options
Standard output shaft diameter: 25 mm. Input bore: 11 / 14 mm.
25 mm diameter with keyway. Default configuration. Model suffix: none.
Shaft exits both sides for bidirectional power take-off. Model suffix: DZ.
Flanged output for direct bolt-on connection, eliminating shaft coupling. Model suffix: FL.
Frequently Asked Questions — EP-NMRV050
▶ Why is the EP-NMRV050 popular for bottling and packaging lines?
The NMRV050 combines compact aluminium construction, up to 800 Nm output torque, and smooth low-noise operation — critical for speed-sensitive bottling conveyors and packaging indexers. Its IEC flanges (63B5, 71B5, 80B5, 80B14) match the most common motors in the packaging sector.
▶ What input bore diameter does the EP-NMRV050 use?
The EP-NMRV050 accepts 11 mm motor shafts (71B frames) and 14 mm shafts (80B frames) via its H7-tolerance hollow bore IEC input, ensuring a wobble-free coupling.
▶ Can two EP-NMRV050 units be connected in series?
Yes. Cascading two NMRV050 units achieves combined ratios up to 10,000:1. Ensure the first-stage output torque does not exceed the second-stage input torque rating, and contact our engineers for cascade selection guidance.
▶ What is the noise level of the EP-NMRV050?
The NMRV050 operates at approximately 60–68 dB(A) at rated load and 1400 rpm. Precision-ground worm shaft and phosphor bronze wheel minimise gear noise; aluminium housing damps structure-borne vibration.
▶ How does the NMRV050 handle shock loading?
The NMRV050 is rated for moderate shock loads (load class B, Fa ≤ 3). For shock-loaded applications, apply service factor fs ≥ 1.5–2.0. Maximum output shaft radial load (Fre max) for this frame is 4,840 N.
▶ What is the expected service life of the EP-NMRV050?
Under rated load with proper lubrication and fs ≥ 1.0, the NMRV050 is designed for a minimum L10 service life of 20,000 hours. The phosphor bronze worm wheel is the primary wear component; lubricant quality and operating temperature are the main life-determining factors.
Customer Reviews
★★★★★
“Our EP-NMRV050 units have run our bottle filling conveyor for over a year. Smooth speed control, whisper-quiet operation, and not a single leak. The 25 mm output shaft handles sprocket loads perfectly.”
Tom Richardson — Craft Bottling Co.
Australia
★★★★★
“Integrated into our overwrapping machine product line. The compact envelope fits our tight machine frames and the IEC flange variety gives great motor sourcing flexibility.”
Marco Esposito — Packaging Machinery Italia
Italy
★★★★☆
“Used on paper feed drives in our offset printing machines. Low backlash and smooth torque delivery are essential for print registration accuracy. Running at 20:1 with a servo motor — very satisfied.”
Yuki Tanaka — Printing Equipment Co.
Japan
Related Products & Accessories
⚙ Compatible Motors
IEC B5/B14 flange single-phase (230V) and three-phase (380V) AC motors for frames: 63B5, 71B14, 71B5, 80B14, 80B5.
Servo and stepper motors available with input adaptor kits. VFD-compatible motors for variable-speed applications.
⚒ Output Accessories
■ Single solid output shaft (standard)
■ Double bidirectional shaft (DZ)
■ Output flange (FL)
■ Torque arm for torque reaction mounting
■ Dust cover for unused shaft end
◆ Related Series
■ EP-NMRV-E050 — coaxial inline output
■ EP-NRV050 — solid input shaft variant
■ EP-NRV-E050 — solid input, coaxial output
■ EP-NMRV063 — next frame size up
Ready to Order the EP-NMRV050?
Request a quote, technical selection support, or enquire about OEM and distributor partnership opportunities for Australian and international markets.
▼ Distributor & OEM partnerships welcome — volume pricing available
