描述
EP-NRV030 Worm Reducer — 28 Nm Shaft-Mount Worm Speed Reducer for Light Industrial Drives
The EP-NRV030 aluminum worm reducer is the second-smallest unit in Ever Power’s NRV shaft-mount series — doubling the output torque of the NRV025 while adding just 0.6 kg of housing weight. At 1.1 kg and up to 28 Nm output torque, the NRV030 covers the light industrial drive segment: small packaging line conveyors, light pharmaceutical blending vessel agitators, and compact warehouse automation conveyor systems where direct shaft mounting eliminates the coupling alignment procedures that cause premature bearing failures in high-cycle packaging machinery.
The NRV030’s 14 mm H8 output shaft is the standard bore size for small conveyor roller shafts, light-duty chain sprocket hubs, and compact indexing table drive studs — eliminating adapter bushings in the majority of standard light industrial drive applications. With ratios from 5:1 to 60:1, the NRV030 covers output speeds from 23 rpm (high-torque slow agitation) to 280 rpm (fast conveyor belt drive) from a single compact housing type.
Technical Specifications
| Parameter | Value |
|---|---|
| Model | EP-NRV030 |
| Weight (without motor) | 1.1 kg |
| Gear Ratios | 5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60 |
| Max Output Torque (M2) | Up to 28 Nm |
| Output Speed Range | 23 – 280 rpm (at 1400 rpm input) |
| Output Shaft Dia. (Metric) | 14 mm H8 |
| Output Shaft Dia. (Inch) | 0.625 in (−0.0005) |
| Keyway (output) | 5 × 16.3 mm |
| Housing Material | Die-cast aluminum alloy |
| Worm Wheel Material | Phosphor bronze |
| Mounting Type | Shaft-mount (hollow bore) + torque arm |
| Input Options | IEC 63B, 71B flange / NEMA 48C, 56C |
| Torque Arm | K1=100 mm, 10 mm pin dia. |
| Protection Class | IP54 standard |
| Operating Temperature | -10 to +40 deg C |
Dimensional Data — Metric & Inch
| Dimension | Metric (mm) | Inch (in) |
|---|---|---|
| Output Shaft dia. | 14 mm H8 | 0.625 in |
| Keyway (output) | 5 × 16.3 mm | 0.187 × 1.0 in |
| Output Shaft Length | 25毫米 | — |
| Torque Arm K1 | 100 mm | 3.94 in |
| Pin Dia. (torque arm) | 10 mm | 0.394 in |
NRV030 vs. NMRV030 — Shaft-Mount vs. Foot-Mount
| Criterion | EP-NRV030 (NRV) | NMRV Foot-Mount |
|---|---|---|
| Mounting Method | Hollow bore on driven shaft ✅ | Foot bracket + shaft coupling |
| Input Shaft | None (motor flange direct) ✅ | Yes (requires coupling) |
| Installation Clearance | Minimum ✅ | Larger (bracket height) |
| Coupling Alignment | Not required ✅ | Required |
| Shaft Seals | Output only ✅ | Input + output |
| Best For | High-cycle OEM drives ✅ | General industrial use |
Core Features & Engineering Advantages
⚙ 28 Nm from a 1.1 kg Housing
Twice the output torque of the NRV025 in a housing that weighs 1.1 kg — covers the full range of light industrial conveyor and agitator drives in Australian food processing and pharmaceutical packaging facilities without requiring structural frame reinforcement.
🔥 14 mm Standard Output Shaft
Matches the bore of standard small conveyor roller shafts, light-duty chain sprocket hubs, and compact indexing table drive studs — eliminating adapter bushings in the majority of standard light industrial drive applications.
📈 No Input Shaft — IEC Direct Mount
IEC 63B and 71B input flanges accept 0.06–0.25 kW motors directly without a separate adaptor plate. NEMA 48C and 56C input flanges also available for North American motor standards common in Australian mining OEM equipment.
📝 K1=100 mm Torque Arm
The 100 mm torque arm with 10 mm pin provides the anti-rotation connection to the machine frame. Compatible with standard M10 weld-on pin brackets and extrusion frame accessories without custom fabrication.
🌞 Self-Locking at High Ratios
The NRV030 worm gear geometry is inherently self-locking at ratios of 30:1 and above — the driven load cannot back-drive the motor, eliminating the need for a separate load-holding brake on slow-speed conveyor tensioners and gate actuators.
Application Scenarios & Industry Suitability
🏭
Food & Packaging Conveyors
Small belt conveyor drives, case conveyor transfer drives, and tray indexing drives in Australian food processing facilities — IP54 housing and corrosion-resistant aluminum withstand regular washdown without sealing degradation.
⚙
Pharmaceutical Blending
Light vessel agitators, tablet coating pan drives, and granulator bowl drives in pharmaceutical manufacturing — 28 Nm output and compact 1.1 kg housing allow direct top-mounting on small vessel frames.
🏛
Warehouse Automation
Small conveyor belt drives, diverter paddle drives, and pick-station indexing drives in e-commerce fulfilment centres — shaft-mount eliminates the coupling alignment issues that cause early failures in high-cycle warehouse automation systems.
📈
Agricultural Machinery Ancillaries
Small feeder auger drives, seed metering unit drives, and fertiliser spreader shaft drives — the NRV030 handles light agricultural drive loads in compact, weight-sensitive machinery where foot-mount brackets are impractical.
Selection Guide — NRV030 Ratio Selection
- Ratio 5–10: Fast conveyor belt and feed roller drives — 140–280 rpm.
- Ratio 15–25: Standard packaging and processing drives — 56–93 rpm, 14–20 Nm.
- Ratio 30–60: Slow agitators, gate actuators — 23–47 rpm, self-locking above 30:1, up to 28 Nm.
Shaft & Torque Arm Configuration
Output: 14 mm H8 solid shaft with 5×16.3 mm keyway. Inch option: 0.625 in. Hollow bore mounts directly onto driven shaft — specify driven shaft diameter at order. Torque arm K1=100 mm, 10 mm pin. Input: IEC 63B, 71B, NEMA 48C, or 56C — specify at order.
Frequently Asked Questions
❓ What output torque does the NRV030 deliver?
Up to 28 Nm at 60:1 ratio — almost double the NRV025 output. Covers light industrial conveyor belt drives, small elevator drives, and light agitator applications.
❓ What is the output shaft diameter of the NRV030?
The NRV030 features a 14 mm H8 output shaft as standard. Inch option: 0.625 in. Matches standard small conveyor roller shaft bores and light-duty sprocket hubs common in packaging machinery.
❓ Can the NRV030 be used in continuous duty?
Yes — rated for continuous S1 duty at ambient up to 40 deg C. For frequent starts, stops, or reversing, apply a service factor of 1.5–2.0 and select accordingly.
❓ How does the NRV030 torque arm connect to the machine frame?
K1=100 mm arm with a 10 mm diameter pin hole engages a fixed bracket on the machine frame, preventing housing rotation under load.
❓ What is the difference between NRV030 and NRV040?
NRV030: 28 Nm, 1.1 kg, 14 mm shaft. NRV040: ~75 Nm, 2.1 kg, 18 mm shaft with higher radial load. Select NRV040 for applications requiring over 28 Nm.
Customer Reviews
★★★★★
“We use NRV030 reducers on small conveyor belt drives throughout our snack food packaging plant in Adelaide. The shaft-mount configuration eliminated the coupling alignment steps that were causing early bearing failures. Excellent product.”
Emma Whitfield 🇦🇺 — Production Engineer, Snack Food Plant, Australia
★★★★★
“Installed NRV030 units on light agitator drives at our pharmaceutical blending facility in Mexico City. The compact housing fits our vessel top mounting without structural modification. Very satisfied.”
Javier Morales 🇿🇽 — Process Engineer, Pharmaceutical Plant, Mexico
★★★★½
“Used NRV030 on small elevator drives in our warehouse automation system in Shenzhen. Shaft-mount saves installation time and the 14 mm shaft matched our drive drum bore exactly.”
Wang Jianfeng 🇨🇳 — Automation Engineer, Logistics Co., China
Compatible Accessories & Related Products
🔌
IEC 63B/71B Motor Adaptors
Direct motor mounting flanges for 0.06–0.25 kW three-phase and single-phase motors in 63 and 71 frame — no separate adaptor plate required.
🔨
Torque Arm (K1=100 mm)
Standard torque arm for NRV030 — 10 mm pin dia., fits standard M10 weld-on pin brackets and extrusion frame accessories.
🔃
NRV040 Upgrade
For applications requiring over 28 Nm, the NRV040 provides up to ~75 Nm in the same shaft-mount configuration with an 18 mm output shaft.
⚙
NMRV030 Foot-Mount Variant
If foot-mount installation is preferred, the NMRV030 provides the same gear ratio and torque range with a standard base and input shaft.
Specify the EP-NRV030 for Your Light Industrial Drive
Application support for ratio selection, driven shaft sizing, and torque arm configuration for Australian OEM, food processing, and packaging industry customers.
✉ [email protected] | OEM & distributor enquiries welcome
