Redutor de engrenagem helicoidal de entrada dupla EP-NMRV-VS | Extensão para acionamento síncrono e encoder

🔗 Synchronised Multi-Station Drive

Chain multiple NMRV-VS redutores de engrenagem helicoidal via the shaft extension — all output shafts run at identical speed from one motor. Mechanical synchronisation; no PLC axis required between stations.

📡 Encoder Direct-Mount

Mount a rotary encoder on the extension to measure actual worm input speed — giving a closed-loop VFD feedback signal without bracket adapters or motor shaft modification on this redutor de engrenagem helicoidal.

🖐 Manual Override Ready

Attach a hand-wheel for manual jogging during maintenance or changeover — without disconnecting the motor. Essential in pharmaceutical and food packaging machinery requiring manual fine-positioning.

Mechanical Synchronisation — No PLC

Connect multiple NMRV-VS redutores de engrenagem helicoidal via the shaft extensions for perfect mechanical synchronisation across filling, sealing, and conveyor stations — no inter-station electronics.

Hollow Shaft Eliminates Output Coupling

The hollow shaft output of this redutor de engrenagem helicoidal slides over the driven shaft — saving up to 80 mm drive length, removing an alignment point, and reducing assembly time on multi-unit production lines.

Self-Locking at Ratios ≥ 20:1

The worm gear design inherently self-locks at 20:1 and above — output shaft holds position when power is removed. Eliminates holding brakes in most packaging and conveyor positioning applications of this redutor de engrenagem helicoidal.

Viton Seals Standard

Standard Viton seals outperform NBR in heat, oil, and chemical resistance — reducing oil leakage risk in food processing and pharmaceutical environments. A compliance advantage versus standard NMRV worm gear reducers.

Can both input ends of the VS worm gear reducer be driven simultaneously?

No. The motor flange and the shaft extension are two ends of the same worm shaft — not independent inputs. When the motor drives, the extension rotates with it. The extension is used for accessories only: encoder, hand-wheel, or tandem coupling to another redutor de engrenagem helicoidal. Only one power source should be connected at a time.

How many worm gear reducers can be chained in a VS tandem synchronised drive?

There is no fixed limit from the redutor de engrenagem helicoidal design itself. The practical constraint is the available torque after supplying the primary machine load and the torsional stiffness of the coupling chain over distance. 2–4 reducers in tandem is typical for most industrial applications. Contact Korea Ever-Power with your total drive schedule for a feasibility calculation.

What encoder types are compatible with the VS shaft extension?

Any incremental or absolute rotary encoder with a bore or clamp coupling matching the tail shaft diameter can be used. Common: 10–12 mm bore with clamp coupling. The shaft extension runs concentrically with the worm input — clean signal without runout-induced noise, provided the coupling is correctly aligned. Provide encoder bore and required shaft diameter when ordering this redutor de engrenagem helicoidal to confirm fit.

Is the EP-NMRV-VS worm gear reducer available in IP67 for washdown environments?

The standard EP-NMRV-VS is rated IP55 with Viton seals. For IP67 washdown (slaughterhouse, car wash, outdoor equipment), the XRV050 series with stainless hub is the correct choice. The VS dual-input configuration is not available in IP67 as standard — contact Korea Ever-Power for non-standard requirements.

What is the self-locking ratio for this worm gear reducer?

Static self-locking is reliable at 20:1 and above — the output shaft holds position when the motor is de-energised. Below 20:1, the output is back-drivable, which is useful for collaborative or hand-guided machine designs. For safety-critical load-hold, verify self-locking experimentally in your specific installation; do not rely on the ratio number alone.

Can a servo motor be used with the EP-NMRV-VS worm gear reducer?

Yes. The IEC flange accepts servo motors with matching flange codes. Combined with the VS shaft extension for encoder feedback, a servo + NMRV-VS creates a closed-loop position or speed control drive. This combination is common in precision label applicators and pharmaceutical dispenser drives where both speed accuracy and manual override are required from the same redutor de engrenagem helicoidal.

What is the first oil change interval for the EP-NMRV-VS?

Change oil at 100 hours — flushes run-in particles from the worm wheel break-in. After the first change: every 2,000–3,000 hours or 12 months continuous service. Above 40°C ambient: use synthetic ISO VG 220 and reduce to 1,500 hours. The warranty for this redutor de engrenagem helicoidal O prazo de entrega é de 18 meses a partir do embarque, em condições normais de operação.

"Three EP-NMRV-VS units drive our filling line in tandem — one motor synchronises three heads. Mechanical sync, no PLC axis needed. Eliminated one electronics cabinet from the project entirely. The worm gear reducer handles the entire drive from a single point."

Kim Sung-wooMachine Builder, Gyeonggi-do Food Packaging OEM

"Mounted a 1,024 PPR encoder on the VS tail extension for closed-loop VFD line speed control. Signal is clean — no shaft runout noise. Viton seals have kept oil off the encoder body after 18 months of continuous duty. The dual-input worm gear reducer design saved us significant integration time."

Park In-sungAutomation Engineer, Seoul Conveyor Systems Co.

"The hollow shaft output replaced solid shaft + coupling — saved 80 mm drive length and removed one alignment point. The VS hand-wheel is used daily during changeover. Both functions from one compact worm gear reducer, no extra components needed."

Choi Yun-jiDesign Engineer, Incheon Pharmaceutical Equipment Maker

"Needed a worm gear reducer accepting an electromagnetic clutch-brake on one end and IEC motor on the other. The IEC flange takes the clutch-brake group directly, no coupling needed. Packaging machine start-stop cycle control is much cleaner. Very pleased with the VS design."

Lee Min-kyungProduction Engineer, Busan Packaging Machinery Co.

"24 units at 30:1 for a multi-station dyeing machine. Self-locking at 30:1 holds drum positions between cycles — no brake needed. Viton seals held in dye chemical environment, no leakage after 12 months three-shift operation. The NMRV-VS worm gear reducer is now our standard for this machine type."

Han Byung-seokMaintenance Manager, Daegu Textile Equipment Plant

"Used the VS extension for a stepper motor on one side and encoder on the other — both simultaneously. The stepper provides high-resolution positioning; the encoder confirms output shaft position independently. Only off-the-shelf worm gear reducer I found that supports both at the same time."

Jung Woo-jinControls Engineer, Seongnam Semiconductor Equipment OEM