{"id":1839,"date":"2026-04-16T03:48:25","date_gmt":"2026-04-16T03:48:25","guid":{"rendered":"https:\/\/worm-reducers.xyz\/?post_type=product&p=1839"},"modified":"2026-04-16T03:48:25","modified_gmt":"2026-04-16T03:48:25","slug":"ep-nmrv-vs-dual-input-worm-gear-reducer-sync-drive-encoder-extension","status":"publish","type":"product","link":"https:\/\/worm-reducers.xyz\/fr\/produit\/ep-nmrv-vs-dual-input-worm-gear-reducer-sync-drive-encoder-extension\/","title":{"rendered":"R\u00e9ducteur \u00e0 vis sans fin \u00e0 double entr\u00e9e EP-NMRV-VS | Extension pour entra\u00eenement synchrone et codeur"},"content":{"rendered":"
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EP-NMRV-VS \u2014 Dual Input Worm Gear Reducer<\/div>\n

EP-NMRV-VS: Dual-Input R\u00e9ducteur \u00e0 vis sans fin<\/span> for Synchronised Multi-Station Drives<\/h2>\n

The EP-NMRV-VS is an aluminium r\u00e9ducteur \u00e0 vis sans fin<\/strong> with a worm shaft tail extension opposite the motor flange \u2014 both ends of the worm input shaft are accessible simultaneously. One unit drives two or more production stations in mechanical synchronisation, or mounts an encoder for closed-loop speed control, or a hand-wheel for manual override \u2014 without any extra components. 10 frame sizes 025\u2013150, ratio 7.5\u2013100:1, 0.12\u20137.5 kW, IEC flanges, hollow shaft output.<\/p>\n

Browse Worm Gear Reducers \u203a<\/a>
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CONTRE<\/strong>
\nDual Input Design<\/span><\/div>\n
025\u2013150<\/strong>
\n10 Frame Sizes<\/span><\/div>\n
7,5\u2013100:1<\/strong>
\nPlage de ratios<\/span><\/div>\n
0.12\u20137.5 kW<\/strong>
\nPuissance d'entr\u00e9e<\/span><\/div>\n<\/div>\n

\"Worm \u00a0<\/p>\n

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The VS Dual-Input Configuration: What It Enables<\/h2>\n

A standard NMRV r\u00e9ducteur \u00e0 vis sans fin<\/strong> has one motor input. The EP-NMRV-VS adds a worm shaft tail extension on the opposite side<\/strong> \u2014 creating a two-accessible-end worm shaft. The motor flange drives one end; the shaft extension rotates simultaneously at the other. This creates three capabilities without any extra components:<\/p>\n

\"Worm<\/p>\n

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\ud83d\udd17 Synchronised Multi-Station Drive<\/strong><\/p>\n

Chain multiple NMRV-VS r\u00e9ducteurs \u00e0 vis sans fin<\/strong> via the shaft extension \u2014 all output shafts run at identical speed from one motor. Mechanical synchronisation; no PLC axis required between stations.<\/p>\n<\/div>\n

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\ud83d\udce1 Encoder Direct-Mount<\/strong><\/p>\n

Mount a rotary encoder on the extension to measure actual worm input speed \u2014 giving a closed-loop VFD feedback signal without bracket adapters or motor shaft modification on this r\u00e9ducteur \u00e0 vis sans fin<\/strong>.<\/p>\n<\/div>\n

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\ud83d\udd90 Manual Override Ready<\/strong><\/p>\n

Attach a hand-wheel for manual jogging during maintenance or changeover \u2014 without disconnecting the motor. Essential in pharmaceutical and food packaging machinery requiring manual fine-positioning.<\/p>\n<\/div>\n<\/div>\n

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EP-NMRV-VS Worm Gear Reducer \u2014 Full Technical Specifications<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Param\u00e8tre<\/th>\nSp\u00e9cification<\/th>\n<\/tr>\n<\/thead>\n
Product \/ Series<\/td>\nEP-NMRV-VS Dual Input Worm Gear Reducer<\/td>\n<\/tr>\n
Tailles de cadre<\/td>\n025 \u00b7 030 \u00b7 040 \u00b7 050 \u00b7 063 \u00b7 075 \u00b7 090 \u00b7 110 \u00b7 130 \u00b7 150<\/td>\n<\/tr>\n
Rapport de transmission<\/td>\n7.5 \u00b7 10 \u00b7 15 \u00b7 20 \u00b7 25 \u00b7 30 \u00b7 40 \u00b7 50 \u00b7 60 \u00b7 80 \u00b7 100 :1<\/td>\n<\/tr>\n
Puissance d'entr\u00e9e<\/td>\n0.12 \u00b7 0.18 \u00b7 0.25 \u00b7 0.37 \u00b7 0.55 \u00b7 0.75 \u00b7 1.1 \u00b7 1.5 \u00b7 2.2 \u00b7 4 \u00b7 5.5 \u00b7 7.5 kW<\/td>\n<\/tr>\n
Input Config. 1<\/td>\nIEC motor flange: 56B14 \u00b7 63B14 \u00b7 71B14 \u00b7 80B14 \u2014 direct mount, no coupling<\/td>\n<\/tr>\n
Input Config. 2 (VS)<\/strong><\/td>\nWorm shaft tail extension<\/strong> \u2014 encoder \/ hand-wheel \/ tandem reducer coupling<\/td>\n<\/tr>\n
Output<\/td>\nKeyed hollow shaft \u00b7 Hollow shaft + output flange \u00b7 Plug-in solid shaft<\/td>\n<\/tr>\n
Logement<\/td>\nDie-cast aluminium ADC12, thickened walls<\/td>\n<\/tr>\n
Worm Gear Material<\/td>\nHigh-grade tin copper bronze \u2014 enhanced wear resistance vs standard<\/td>\n<\/tr>\n
Worm Shaft Material<\/td>\n20CrMnTi \u2014 carburised, quenched, precision ground<\/td>\n<\/tr>\n
Scell\u00e9s<\/td>\nViton (SKF\/NAK) \u2014 heat-resistant, anti-oxidation, low leakage<\/td>\n<\/tr>\n
Quality \/ Warranty<\/td>\nISO 9001:2015 \u00b7 18 months from shipment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
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Why Engineers Specify the EP-NMRV-VS Worm Gear Reducer<\/h2>\n

\"R\u00e9ducteur<\/p>\n

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\u26a1<\/div>\n

Mechanical Synchronisation \u2014 No PLC<\/h3>\n

Connect multiple NMRV-VS r\u00e9ducteurs \u00e0 vis sans fin<\/strong> via the shaft extensions for perfect mechanical synchronisation across filling, sealing, and conveyor stations \u2014 no inter-station electronics.<\/p>\n<\/div>\n

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\ud83d\udd73<\/div>\n

Hollow Shaft Eliminates Output Coupling<\/h3>\n

The hollow shaft output of this r\u00e9ducteur \u00e0 vis sans fin<\/strong> slides over the driven shaft \u2014 saving up to 80 mm drive length, removing an alignment point, and reducing assembly time on multi-unit production lines.<\/p>\n<\/div>\n

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\ud83d\udd12<\/div>\n

Self-Locking at Ratios \u2265 20:1<\/h3>\n

The worm gear design inherently self-locks at 20:1 and above \u2014 output shaft holds position when power is removed. Eliminates holding brakes in most packaging and conveyor positioning applications of this r\u00e9ducteur \u00e0 vis sans fin<\/strong>.<\/p>\n<\/div>\n

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\ud83d\udee1<\/div>\n

Viton Seals Standard<\/h3>\n

Standard Viton seals outperform NBR in heat, oil, and chemical resistance \u2014 reducing oil leakage risk in food processing and pharmaceutical environments. A compliance advantage versus standard NMRV worm gear reducers.<\/p>\n<\/div>\n<\/div>\n

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Applications of the Dual-Input Worm Gear Reducer<\/h2>\n
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Main applications of the EP-NMRV-VS dual-input worm gear reducer<\/p>\n<\/div>\n

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\"NMRV-VS<\/p>\n

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Conveyor & Packaging Lines<\/h3>\n

Multi-section filling, sealing, labelling. One motor synchronises all stations mechanically via VS tandem chain \u2014 no inter-station speed drift, no sync electronics.<\/p>\n<\/div>\n<\/div>\n

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\"NMRV-VS<\/p>\n

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Automation with Speed Feedback<\/h3>\n

Encoder on VS extension feeds actual shaft speed to VFD \u2014 closed-loop line speed control. Hand-wheel on same extension for manual jog. One r\u00e9ducteur \u00e0 vis sans fin<\/strong>, both functions.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Composants d'entra\u00eenement adapt\u00e9s<\/h2>\n

For the best performance and service life, this r\u00e9ducteur \u00e0 vis sans fin<\/strong> works as part of a matched drive system. Korea Ever-Power supplies compatible roues \u00e0 vis sans fin<\/a> that mesh precisely with the internal worm shaft, as well as matched worm gear shafts<\/a> including the VS tail extension, so replacement components maintain the original torque transmission accuracy and backlash characteristics of the assembled unit. Couplings are also available to connect the VS extension to encoders, hand-wheels, or tandem reducers \u2014 contact Korea Ever-Power with your shaft diameter and application for a confirmed recommendation.<\/p>\n

\"worm<\/p>\n<\/div>\n

<\/p>\n

FAQ \u2014 EP-NMRV-VS Dual Input Worm Gear Reducer<\/h2>\n
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Can both input ends of the VS worm gear reducer be driven simultaneously?<\/h3>\n

No. The motor flange and the shaft extension are two ends of the same worm shaft \u2014 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 r\u00e9ducteur \u00e0 vis sans fin<\/strong>. Only one power source should be connected at a time.<\/p>\n<\/div>\n

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How many worm gear reducers can be chained in a VS tandem synchronised drive?<\/h3>\n

There is no fixed limit from the r\u00e9ducteur \u00e0 vis sans fin<\/strong> 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\u20134 reducers in tandem is typical for most industrial applications. Contact Korea Ever-Power with your total drive schedule for a feasibility calculation.<\/p>\n<\/div>\n

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What encoder types are compatible with the VS shaft extension?<\/h3>\n

Any incremental or absolute rotary encoder with a bore or clamp coupling matching the tail shaft diameter can be used. Common: 10\u201312 mm bore with clamp coupling. The shaft extension runs concentrically with the worm input \u2014 clean signal without runout-induced noise, provided the coupling is correctly aligned. Provide encoder bore and required shaft diameter when ordering this r\u00e9ducteur \u00e0 vis sans fin<\/strong> to confirm fit.<\/p>\n<\/div>\n

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Is the EP-NMRV-VS worm gear reducer available in IP67 for washdown environments?<\/h3>\n

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 \u2014 contact Korea Ever-Power for non-standard requirements.<\/p>\n<\/div>\n

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What is the self-locking ratio for this worm gear reducer?<\/h3>\n

Static self-locking is reliable at 20:1 and above \u2014 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.<\/p>\n<\/div>\n

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Can a servo motor be used with the EP-NMRV-VS worm gear reducer?<\/h3>\n

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 r\u00e9ducteur \u00e0 vis sans fin<\/strong>.<\/p>\n<\/div>\n

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What is the first oil change interval for the EP-NMRV-VS?<\/h3>\n

Change oil at 100 hours \u2014 flushes run-in particles from the worm wheel break-in. After the first change: every 2,000\u20133,000 hours or 12 months continuous service. Above 40\u00b0C ambient: use synthetic ISO VG 220 and reduce to 1,500 hours. The warranty for this r\u00e9ducteur \u00e0 vis sans fin<\/strong> is 18 months from shipment under normal operating conditions.<\/p>\n<\/div>\n<\/div>\n

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Customer Reviews \u2014 EP-NMRV-VS Worm Gear Reducer<\/h2>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“Three EP-NMRV-VS units drive our filling line in tandem \u2014 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.”<\/p>\n

Kim Sung-woo<\/strong>Machine Builder, Gyeonggi-do Food Packaging OEM<\/span><\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“Mounted a 1,024 PPR encoder on the VS tail extension for closed-loop VFD line speed control. Signal is clean \u2014 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.”<\/p>\n

Park In-sung<\/strong>Automation Engineer, Seoul Conveyor Systems Co.<\/span><\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“The hollow shaft output replaced solid shaft + coupling \u2014 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.”<\/p>\n

Choi Yun-ji<\/strong>Design Engineer, Incheon Pharmaceutical Equipment Maker<\/span><\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“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.”<\/p>\n

Lee Min-kyung<\/strong>Production Engineer, Busan Packaging Machinery Co.<\/span><\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“24 units at 30:1 for a multi-station dyeing machine. Self-locking at 30:1 holds drum positions between cycles \u2014 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.”<\/p>\n

Han Byung-seok<\/strong>Maintenance Manager, Daegu Textile Equipment Plant<\/span><\/p>\n<\/div>\n

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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“Used the VS extension for a stepper motor on one side and encoder on the other \u2014 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.”<\/p>\n

Jung Woo-jin<\/strong>Controls Engineer, Seongnam Semiconductor Equipment OEM<\/span><\/p>\n<\/div>\n<\/div>\n

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Pr\u00eat \u00e0 sp\u00e9cifier votre r\u00e9ducteur \u00e0 vis sans fin ?<\/h2>\n

Send your motor power, required ratio, frame size, and application to ventes@worm-reducers.xyz<\/strong><\/a> \u2014 Korea Ever-Power will confirm availability and pricing within 24 hours.<\/p>\n

All Worm Gear Reducers \u203a<\/a>
\nContactez-nous<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

EP-NMRV-VS dual-input worm gear reducer \u2014 connects a motor on one side and a coupling\/shaft on the other simultaneously, enabling 2+ equipment lines to run in synchronisation from one unit. Hollow shaft output, 10 frame sizes 025\u2013150, ratio 7.5\u2013100:1, power 0.12\u20137.5 kW. IEC flanges 56B14\u201380B14, Viton seals, 20CrMnTi worm shaft, tin copper worm gear.<\/p>","protected":false},"featured_media":1842,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_brand":[],"product_cat":[1515],"product_tag":[],"class_list":{"0":"post-1839","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-worm-gear-reducer","8":"first","9":"instock","10":"shipping-taxable","11":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product\/1839","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/comments?post=1839"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/media\/1842"}],"wp:attachment":[{"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/media?parent=1839"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product_brand?post=1839"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product_cat?post=1839"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product_tag?post=1839"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}