Опис
EP-NMRV075 Heavy Medium-Duty Aluminium Worm Reducer
The EP-NMRV075 takes the NMRV aluminium worm reducer series into serious medium-duty territory – delivering up to 233 Nm output torque at input powers up to 3 kW. At 9 kg with 75 mm centre distance, it remains significantly lighter than cast iron equivalents which typically weigh 15-20 kg while handling conveyor head drives, industrial agitator mechanisms, and processing equipment that the smaller NMRV063 cannot cover. The output shaft upgrades to Ø28 mm standard with optional Ø35 mm for heavier shaft loads – matching the shaft standards used in medium-duty Australian industrial drives. IEC motor frames from 56 to 112 connect directly via B5 or B14 flange, accommodating motors from 0.25 kW to 3 kW without adaptor plates. Compatible with PC071 and PC080 helical pre-stages for extended ratio ranges with higher efficiency than equivalent double-worm combinations.
EP-NMRV075 Technical Specifications
| Параметр | Значення |
|---|---|
| Модель | EP-NMRV075 |
| Центральна відстань | 75 мм |
| Вага (без двигуна) | 9 kg |
| Вихідний вал | Ø28 mm h6 (optional Ø35 mm) |
| Output Keyway | b=8mm, t=31.3mm (38.3 for 35mm) |
| Діапазон співвідношення | 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
| Вхідна потужність | 0.25 – 3 kW |
| Housing | Die-cast aluminium alloy |
| IEC Motor Frames | 56/63/71/80/90/100/112 B5 and B14 |
| Клас захисту IP | IP54 |
| Output Flanges | FA, FB |
| Монтаж | B3, B6, B7, B8, V5, V6 |
| Helical Pre-Stages | PC071, PC080 |
Performance Data at P1 = 0.75 kW (n1 = 1400 rpm)
| Співвідношення | n2 (об/хв) | Крутний момент (Нм) | Service Factor | Fr2 (N) |
|---|---|---|---|---|
| 15 | 93.3 | 130 | 1.5 | 3509 |
| 20 | 70 | 168 | 1.3 | 3862 |
| 25 | 56 | 205 | 1.0 | 4160 |
| 30 | 46.7 | 233 | 1.0 | 4421 |
| 40 | 35 | 147 | 1.5 | 4865 |
| 50 | 28 | 177 | 1.2 | 5241 |
Performance Data at P1 = 0.55 kW (n1 = 1400 rpm)
| Співвідношення | n2 (об/хв) | Крутний момент (Нм) | Service Factor | Fr2 (N) |
|---|---|---|---|---|
| 40 | 35 | 108 | 2.0 | 4865 |
| 50 | 28 | 129 | 1.6 | 5241 |
| 60 | 23.3 | 146 | 1.4 | 5569 |
| 80 | 17.5 | 180 | 1.1 | 6130 |
| 100 | 14 | 206 | 0.9 | 6603 |
Helical Pre-Stage Combinations
| Combination | Діапазон співвідношення | Max Torque |
|---|---|---|
| PC071+NMRV075 | 73.4 – 293.8:1 | 332 Nm |
| PC080+NMRV075 | 75 – 150:1 | 332 Nm |
| NMRV040/075 | 2400 – 5000:1 | 498 Nm |
✓ Основні характеристики та переваги
Handles loaded conveyor drives, industrial agitators, and processing equipment that smaller NMRV frames cannot. The first NMRV size operating at genuine medium-industrial torque levels.
Accepts motors from 0.25 kW to 3 kW directly via B5 or B14 flange. Frame 100 and 112 support opens the NMRV075 to medium-industrial applications previously requiring cast iron reducers.
45-55% lighter than comparable cast iron. Still practical for field installation by one or two workers on mining and construction sites without overhead lifting equipment.
PC071 and PC080 helical pre-stages extend the ratio range to 293.8:1 – achieving higher transmission efficiency than double-worm combinations at comparable ratios. Standard for demanding continuous-duty applications.
⚙ Галузеві застосування
Head and tail drives for medium-duty ore, coal, and aggregate belt conveyors. 233 Nm handles loaded belt tension at moderate speeds. 9 kg enables underground installation without overhead crane.
Mixing vessel drives for chemical processing, water treatment, and food production. Ø28 or Ø35 output shaft matches standard agitator shaft couplings directly.
Palletiser main drives, heavy-duty indexing tables, and robotic cell conveyor drives exceeding NMRV063 torque capacity. FA and FB flanges for direct machine mounting.
Low-speed drives for dosing pumps, small compressors, and ventilation blower mechanisms requiring up to 3 kW input power.
⚙ Керівництво з вибору та монтажних положень
Select the NMRV075 when your application requires output torque between 130 Nm and 233 Nm at input power up to 3 kW. Step up to the NMRV090 at 302 Nm for heavier loads. The NMRV063 at 167 Nm is more cost-effective for lighter applications or where 5 output flange options are needed.
| Позиція | Код | Примітка про олію |
|---|---|---|
| Горизонтальний | Б3 | Стандартне заповнення |
| Перевернутий | В8 | Збільшене заповнення |
| Вертикальний вгору | В5 | Зменшене заповнення |
| Вертикальний вниз | V6 | Максимальне заповнення |
| Настінне кріплення лівий/правий | B6/B7 | Per mounting chart |
⚖ Aluminium vs Cast Iron – Heavy-Duty Comparison
At the 75 mm size class, the weight difference between aluminium and cast iron becomes increasingly significant for installation logistics. The NMRV075 at 9 kg can be handled by one or two workers; the cast iron equivalent at 15-20 kg may require mechanical lifting assistance.
| Функція | Aluminium NMRV | Чавун |
|---|---|---|
| Вага | Запальничка 30-50% | Важчий |
| Корозія | Відмінно | Бідний |
| Heat Dissipation | Покращений | Помірний |
| Вартість | Нижня | Вища |
| Noise | Low | Помірний |
| IEC Motor | Direct B5/B14 | Adaptor often needed |
❓ Часті запитання
▶ What is the maximum output torque of the EP-NMRV075?
▶ Why does the NMRV075 support IEC frame 100 and 112?
▶ What are the PC071 and PC080 helical pre-stage options?
▶ When should I specify the Ø35 mm output shaft?
▶ What is the thermal capacity of the EP-NMRV075 at 3 kW?
★ Відгуки клієнтів
“NMRV075 on our underground conveyor drives. 9 kg means our crew installs without a crane. Running 3 shifts at 200 Nm continuous with zero downtime in 14 months.”
Філ В. – Goldfields Mining Co. (Австралія)
“Upgraded our agitator drives from cast iron. NMRV075 at 35 mm output matches our mixing shaft directly. 50% lighter – simplified our vessel mounting frames significantly.”
Мартін К. – ChemProcess AG (Німеччина)
“PC080 pre-stage plus NMRV075 on our palletiser main drives. 150:1 ratio with better efficiency than our previous double-worm setup. Clean compact installation.”
Девід Л. – TransPack Ltd (Велика Британія)
⚙ Супутні товари та аксесуари
⚙ IEC Motors: Frames 56-112, B5 and B14. ⚖ Output Flanges: FA, FB. ⚖ Моментні важелі: K1=200mm. ⚙ Covers: N2=74mm. ⚙ Pre-Stages: PC071, PC080 helical units.
Get Your EP-NMRV075 Quote Today
Contact Ever Power for pricing and OEM quantities. Email: [email protected]
