Frames 56, 63, 71, 80 in B5 and B14.

050 is 89 Nm at 3.5 kg; 040 is 53 Nm at 2.3 kg.

Standard 25 mm h6, optional 24 mm.

Yes with optional marine-grade coating.

Best EP-NMRV050 Aluminium Worm Reducer Australia Manufacturers, suppliers, factory

Name: Best EP-NMRV050 Aluminium Worm Reducer Australia Manufacturers, suppliers, factory - Worm Reducers
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EP-NMRV050 Aluminium Worm Reducer – Light-to-Medium Duty Crossover

The EP-NMRV050 bridges the gap between light-duty NMRV040 and medium-duty NMRV063 applications. At 3.5 kg with 50 mm centre distance and Ø25 mm output shaft, it handles output torques up to 89 Nm – sufficient for single-lane packaging conveyors, water treatment paddle drives, and food processing belt systems that exceed the NMRV040 capacity but do not yet require the bulk of the NMRV063. The Ø25 mm output shaft matches standard Australian industrial coupling and sprocket bore sizes directly without adaptor sleeves. IEC motor frames from 56 to 80 connect directly via B5 or B14 flange – adding frame 80 compatibility that the NMRV040 does not offer. Four output flanges FA, FB, FC, and FD provide versatile direct machine mounting. The NMRV050 also serves as the output stage for NMRV030/050 double-stage combinations reaching 4800:1, and as a pre-stage for NMRV110 in extreme-ratio configurations up to 5000:1.

EP-NMRV050 Technical Specifications

Parameter	Value
Model	EP-NMRV050
Centre Distance	50 mm
Weight (without motor)	3.5 kg
Output Shaft	Ø25 mm h6 (optional Ø24 mm)
Output Keyway	b=8mm, t=28.3mm
Ratio Range	5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100
Giriş Gücü	0.12 – 0.75 kW
Housing	Die-cast aluminium alloy
IEC Motor Frames	56B5/B14, 63B5/B14, 71B5/B14, 80B5/B14
IP Rating	IP54
Output Flanges	FA, FB, FC, FD
Montaj	B3, B6, B7, B8, V5, V6
Double-Stage Output	NMRV030/050 (to 4800:1)
Double-Stage Pre	NMRV050/110 (to 5000:1)

Performance Data at P1 = 0.37 kW (n1 = 1400 rpm)

Oran	n2 (rpm)	Torque (Nm)	Service Factor	Fr2 (N)
10	140	21.7	3.3	1987
15	93.3	31	2.4	2274
20	70	40	1.8	2503
25	56	48	1.5	2696
30	46.7	55	1.5	2865
40	35	68	1.1	3153
50	28	80	0.9	3397
60	23.3	89	0.8	3610

Performance Data at P1 = 0.75 kW (n1 = 1400 rpm)

Oran	n2 (rpm)	Torque (Nm)	Service Factor	Fr2 (N)
7.5	186.7	34	2.1	1805
10	140	44	1.6	1987
15	93.3	63	1.2	2274
20	70	81	0.9	2503

Double-Stage Combinations

Combination	Ratio Range	Max Torque
NMRV030/050	900 – 4800:1	311 Nm
NMRV050/110	3000 – 5000:1	1396 Nm
PC063+NMRV050	146.7 – 293.3:1	96 Nm
PC071+NMRV050	73.4 – 117.5:1	119 Nm

✓ Core Features and Benefits

⚙ Ø25 mm Output – Australian Standard Bore
Matches the most common Australian coupling and sprocket bore size for medium-duty industrial drives. Direct fit without adaptor sleeves – reducing installation cost and potential misalignment.

⚒ IEC Frames 56 to 80 – Wider Motor Range
Adds IEC frame 80 compatibility that the smaller NMRV040 does not offer – extending the input power range to 0.75 kW for medium-duty applications without stepping to the heavier NMRV063.

❄ 3.5 kg – Portable and Practical
Light enough for one-person installation in all mounting orientations. Aluminium housing dissipates operating heat efficiently for continuous duty at up to 40°C ambient without supplementary cooling.

⚖ Double-Stage and Helical Pre-Stage Compatible
Pairs with NMRV030 as pre-stage reaching 4800:1, with NMRV110 as output stage reaching 5000:1, and with PC063/PC071 helical pre-stages for higher-efficiency extended ratio combinations.

⚙ Industry Applications

⚔ Water Treatment Paddle and Dosing Drives
Paddle drives, flocculator mechanisms, and dosing conveyors in municipal and industrial water treatment plants. Aluminium resists the humid, chemically aggressive plant environment that corrodes uncoated cast iron within months.

⚒ Packaging Line Conveyors
Single-lane product conveyors, labelling machines, and shrink-wrap infeed drives. Ø25 mm output directly coupled to conveyor drive sprockets without bore modification.

⚙ Food Processing Belt Drives
Corrosion-resistant aluminium worm gearbox for meat processing, dairy, and bakery belt conveyors requiring 40-80 Nm output torque. Handles daily CIP washdown cycles.

⚊ Small Pump and Fan Drives
Low-speed drives for dosing pumps, small agitators, and ventilation fan mechanisms where 89 Nm at 0.75 kW meets the torque requirement with margin.

⚙ Selection Guide and Mounting Positions

Select the NMRV050 when your application requires output torque between 22 Nm and 89 Nm at input power up to 0.75 kW. Step up to the NMRV063 at 167 Nm maximum for heavier loads. The NMRV040 at 53 Nm maximum is more cost-effective for lighter applications. The NMRV050 is the first NMRV size offering IEC frame 80 compatibility.

Position	Code	Oil Note
Horizontal	B3	Standard fill
Inverted	B8	Increased fill
Vertical up	V5	Reduced fill
Vertical down	V6	Maximum fill
Wall-mount L/R	B6/B7	Per mounting chart

⚖ Aluminium vs Cast Iron Comparison

The NMRV050 at 3.5 kg replaces cast iron equivalents weighing 6-8 kg – a significant advantage for field installation, shipping cost, and overhead mounting applications. Aluminium also provides superior corrosion resistance for water treatment and food processing environments.

Feature	Aluminium NMRV	Cast Iron
Weight	30-50% lighter	Heavier
Corrosion	Excellent	Poor
Heat Dissipation	Superior	Moderate
Cost	Lower	Higher
Noise	Low	Moderate
IEC Motor	Direct B5/B14	Adaptor often needed

❓ Frequently Asked Questions

▶ What is the maximum output torque of the EP-NMRV050?

89 Nm at 0.37 kW input and 60:1 ratio. At 100:1 ratio with 0.75 kW input, output torque is approximately 55 Nm at 14 rpm. Always verify that the service factor meets your application shock loading requirements.

▶ What IEC motor frame sizes does the EP-NMRV050 accept?

Frames 56, 63, 71, and 80 in both B5 and B14 configurations. Frame 80 extends the NMRV050 to 0.75 kW input power – this is not available on the smaller NMRV040.

▶ How does the EP-NMRV050 compare to the NMRV040?

NMRV050: 89 Nm max, 3.5 kg, Ø25 output, frame 80 compatible. NMRV040: 53 Nm max, 2.3 kg, Ø18 output, frame 71 maximum. Choose the 050 when Ø25 shaft bore or higher torque is required.

▶ What output shaft options are available for the EP-NMRV050?

Standard Ø25 mm h6 tolerance. Optional Ø24 mm available on request. Four output flanges FA, FB, FC, FD for direct machine mounting. All bolt onto the same housing output face.

▶ Is the EP-NMRV050 suitable for outdoor installation?

Yes. The aluminium housing with factory coating resists UV exposure and moisture. For extended outdoor use in salt-spray coastal zones, specify the optional marine-grade coating upgrade.

★ Customer Reviews

★★★★★

“NMRV050 at 30:1 on our water treatment paddle drives. Aluminium handles the damp environment with no corrosion after 2 years of 24/5 operation. Reliable and maintenance-free so far.”

Andrew K. – Murray Water Services (Australia)

★★★★★

“The 25 mm output connects directly to our packaging conveyor sprockets without any bore modification. Frame 80 motor gives us the power headroom we need. Solid reliable performance.”

Yuki T. – Nippon Pack Systems (Japan)

★★★★★

“Upgraded from cast iron to NMRV050 across our dairy conveyor line. 40% weight saving reduced installation time significantly. Easy one-person fit without overhead crane.”

Hans B. – Alpen Dairy Tech AG (Switzerland)

⚙ Related Products and Accessories

⚙ IEC Motors: Frames 56-80, B5 and B14. ⚖ Output Flanges: FA, FB, FC, FD. ⚖ Torque Arms: K1=100mm. ⚙ Covers: N2=58mm. ⚙ Pre-Stages: PC063, PC071 helical units.