{"id":1896,"date":"2026-04-16T08:48:32","date_gmt":"2026-04-16T08:48:32","guid":{"rendered":"https:\/\/worm-reducers.xyz\/?post_type=product&p=1896"},"modified":"2026-04-16T08:48:32","modified_gmt":"2026-04-16T08:48:32","slug":"wpwko-vertical-shaft-worm-gear-reducer-shaft-down-output","status":"publish","type":"product","link":"https:\/\/worm-reducers.xyz\/fr\/produit\/wpwko-vertical-shaft-worm-gear-reducer-shaft-down-output\/","title":{"rendered":"R\u00e9ducteur \u00e0 vis sans fin \u00e0 arbre vertical WPWKO | Sortie arbre vers le bas"},"content":{"rendered":"
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WPWKO \u2014 Vertical Output Shaft Worm Gear Reducer<\/div>\n

WPWKO: Vertical Shaft R\u00e9ducteur \u00e0 vis sans fin<\/span> \u2014 Output Shaft Oriented Downward<\/h2>\n

The WPWKO is a cast iron WP-series r\u00e9ducteur \u00e0 vis sans fin<\/strong> with the output shaft oriented vertically \u2014 the “KO” suffix designates vertical output shaft configuration. The housing bearing arrangement, oil sump geometry, and vent position are all designed for sustained vertical shaft operation, including sustaining the axial weight of the driven mechanism without an external thrust bearing. Frame sizes 40\u2013250, output torque 17\u20133,000 N\u00b7m, input power 0.12\u201315 kW. Used in goods lifts, vertical agitator shafts, stage platforms, and shaft-down process machinery.<\/p>\n

Browse Worm Gear Reducers \u203a<\/a>
\nRequest Quote<\/a><\/div>\n<\/div>\n

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\u2195 Vertical<\/strong>
\nArbre de sortie<\/span><\/div>\n
17\u20133,000 N\u00b7m<\/strong>
\nCouple de sortie<\/span><\/div>\n
40\u2013250<\/strong>
\nFrame Size Range<\/span><\/div>\n
0,12\u201315 kW<\/strong>
\nPuissance d'entr\u00e9e<\/span><\/div>\n<\/div>\n

\"WPWKO<\/p>\n

Worm gear reducer working principle \u2014 right-angle worm mesh enabling 90\u00b0 shaft direction change for vertical output<\/p>\n

Understanding WP Series Configuration Codes<\/h2>\n

Korea Ever-Power’s WP-series r\u00e9ducteur \u00e0 vis sans fin<\/strong> range uses configuration suffix codes to define the shaft arrangement and mounting style. Understanding the code selects the right unit for your installation:<\/p>\n

\n\n\n\n\n\n\n\n\n
Code<\/th>\nArbre de sortie<\/th>\nKey Feature<\/th>\nId\u00e9al pour<\/th>\n<\/tr>\n<\/thead>\n
WPWO<\/td>\nHorizontal (standard)<\/td>\nUniversal mounting, single keyed shaft<\/td>\nStandard horizontal drives<\/td>\n<\/tr>\n
WPWDK<\/td>\nHorizontal<\/td>\nDouble keyed \u2014 input and output keyed<\/td>\nChain\/sprocket, belt\/pulley drives<\/td>\n<\/tr>\n
WPWKO<\/strong><\/td>\nVertical (up or down)<\/strong><\/td>\nVertical output shaft \u2014 axial load integrated<\/strong><\/td>\nLifts, agitators, shaft-down drives<\/strong><\/td>\n<\/tr>\n
WPWKT<\/td>\nHorizontal<\/td>\nTorque arm reaction support<\/td>\nShaft-mounted driven equipment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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Standard WPWO in Vertical Use \u2014 The Problem<\/h3>\n

A standard WPWO r\u00e9ducteur \u00e0 vis sans fin<\/strong> used with the output shaft pointing down places the full weight of the driven mechanism as an axial force on the output bearing \u2014 which is rated for radial loads. This reduces bearing life unless an external thrust bearing is added. Additionally, the oil level and vent position in a horizontal housing may not adequately lubricate all bearing surfaces in a vertical orientation.<\/p>\n<\/div>\n

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WPWKO \u2014 Designed for Vertical<\/h3>\n

The WPWKO r\u00e9ducteur \u00e0 vis sans fin<\/strong> housing is designed with the output shaft bearing arrangement, oil sump geometry, and vent plug position optimised for vertical shaft operation. The output bearing sustains the axial load of the driven mechanism within rated limits. No external thrust bearing, adapter, or housing modification is required.<\/p>\n<\/div>\n<\/div>\n

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WPWKO 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
Series \/ Model<\/td>\nWPWKO \u2014 WP series vertical output shaft worm gear reducer<\/td>\n<\/tr>\n
Frame Size Range<\/td>\nWPWKO40 \u00b7 50 \u00b7 60 \u00b7 70 \u00b7 80 \u00b7 100 \u00b7 120 \u00b7 135 \u00b7 155 \u00b7 175 \u00b7 200 \u00b7 250<\/td>\n<\/tr>\n
Puissance d'entr\u00e9e<\/td>\n0.12\u201315 kW at 1,500 rpm<\/td>\n<\/tr>\n
Vitesse de sortie<\/td>\n25\u2013300 rpm<\/td>\n<\/tr>\n
Couple de sortie<\/strong><\/td>\n17\u20133,000 N\u00b7m<\/strong><\/td>\n<\/tr>\n
Arbre de sortie<\/strong><\/td>\nVertical \u2014 shaft-down standard; shaft-up on request<\/strong><\/td>\n<\/tr>\n
Mat\u00e9riau du bo\u00eetier<\/td>\nCast iron HT200 \u2014 rigid, high vibration damping<\/td>\n<\/tr>\n
Agencement des engrenages<\/td>\nWorm and worm wheel \u2014 right-angle drive (motor horizontal, output vertical)<\/td>\n<\/tr>\n
Rapports standard<\/td>\n10 \u00b7 15 \u00b7 20 \u00b7 25 \u00b7 30 \u00b7 40 \u00b7 50 \u00b7 60 :1<\/td>\n<\/tr>\n
Autobloquant<\/td>\nAt ratios \u2265 20:1 \u2014 output shaft holds under vertical load when motor off<\/td>\n<\/tr>\n
Unit Weight<\/td>\n5\u2013500 kg (frame size dependent)<\/td>\n<\/tr>\n
Quality \/ Warranty<\/td>\nISO 9001 \u00b7 18 months from shipment<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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\"WPWKO<\/p>\n

WPWKO worm gear reducer detailed parameter table by frame size<\/p>\n<\/div>\n<\/div>\n

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Key Advantages of the WPWKO Vertical Shaft Worm Gear Reducer<\/h2>\n
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\u2195\ufe0f<\/div>\n

Axial Load Integrated \u2014 No Thrust Bearing Needed<\/h3>\n

The WPWKO output bearing sustains the axial weight of the driven mechanism within rated limits \u2014 eliminating the external thrust bearing and support cradle required when a standard WPWO r\u00e9ducteur \u00e0 vis sans fin<\/strong> is used vertically.<\/p>\n<\/div>\n

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\ud83c\udfd7<\/div>\n

Motor Horizontal \u2014 Output Vertical<\/h3>\n

The worm right-angle drive changes the power direction 90\u00b0 \u2014 the motor mounts horizontally on the housing side while the output shaft points down. This is the key space advantage: no vertical motor headroom required above the driven shaft for this r\u00e9ducteur \u00e0 vis sans fin<\/strong>.<\/p>\n<\/div>\n

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\ud83d\udd12<\/div>\n

Self-Locking Holds Vertical Load<\/h3>\n

At ratios \u2265 20:1, the worm self-locks \u2014 output shaft holds the vertical load position when motor power is removed. For goods hoists, platform lifts, and vertical adjustment mechanisms, this r\u00e9ducteur \u00e0 vis sans fin<\/strong> eliminates the supplementary holding brake.<\/p>\n<\/div>\n

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\ud83c\udfed<\/div>\n

Cast Iron \u2014 Rigid Under Sustained Axial Load<\/h3>\n

HT200 cast iron housing maintains centre distance and bearing alignment under sustained vertical shaft loads throughout service life. Aluminium alloy housings deflect progressively under combined axial and radial loading \u2014 the WPWKO cast iron construction of this r\u00e9ducteur \u00e0 vis sans fin<\/strong> avoids this.<\/p>\n<\/div>\n<\/div>\n

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Applications \u2014 Where the WPWKO Vertical Shaft Worm Gear Reducer Is Used<\/h2>\n
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\"WPWKO<\/p>\n

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Lifts, Hoists & Platform Elevators<\/h3>\n

Goods hoists, vertical sorting conveyors, stage platform elevators, and height-adjustable work platforms. WPWKO output shaft connects directly to the lift drive shaft \u2014 self-locking at \u2265 20:1 holds load without a brake. Motor mounted horizontally to the side.<\/p>\n<\/div>\n<\/div>\n

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\"WPWKO<\/p>\n

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Vertical Agitators & Process Machinery<\/h3>\n

Vertical agitator shafts in mixing vessels, vertical screw drives for dispensers, and rotary indexing tables with downward-facing driven shaft. Motor mounts horizontally \u2014 saves headroom above the vessel where vertical motor space is limited.<\/p>\n<\/div>\n<\/div>\n<\/div>\n

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When to Choose WPWKO Over Standard WPWO Worm Gear Reducer<\/h2>\n

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

\n\n\n\n\n\n\n\n\n\n
Condition<\/th>\nWPWO Standard<\/th>\nWPWKO Vertical<\/th>\n<\/tr>\n<\/thead>\n
Horizontal output shaft<\/td>\n\u2713 Optimised<\/td>\nNot primary use<\/td>\n<\/tr>\n
Vertical output (shaft-down)<\/td>\nNeeds external thrust bearing<\/td>\n\u2713 No modification needed<\/td>\n<\/tr>\n
Driven load weight on output shaft<\/td>\nMust add thrust bearing<\/td>\n\u2713 Rated for this load<\/td>\n<\/tr>\n
Self-locking load hold<\/td>\n\u2713 At \u2265 20:1<\/td>\n\u2713 At \u2265 20:1 \u2014 preferred for vertical<\/td>\n<\/tr>\n
Motor space above driven shaft<\/td>\nBevel stage needed for vertical driven shaft<\/td>\n\u2713 Motor mounts to side \u2014 no vertical headroom<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

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

The WPWKO uses the same internal gear pair components as the standard WPWO at each frame size. Korea Ever-Power supplies replacement roues \u00e0 vis sans fin<\/a> for the vertical shaft variant that are interchangeable with the corresponding WPWO frame \u2014 providing the correct tooth profile, centre distance, and alloy grade to maintain original performance of this r\u00e9ducteur \u00e0 vis sans fin<\/strong> when the worm wheel wears. Matched worm gear shafts<\/a> are stocked for WPWKO frame sizes 40\u2013250, including the horizontal input shaft configuration. For output shaft couplings \u2014 which must handle both torque transmission and the axial weight load from the driven mechanism \u2014 contact Korea Ever-Power with your shaft diameter, torque, and vertical load for a confirmed coupling recommendation.<\/p>\n

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

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FAQ \u2014 WPWKO Vertical Shaft Worm Gear Reducer<\/h2>\n
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Can the WPWKO worm gear reducer be installed shaft-up (output pointing upward)?<\/h3>\n

Yes. The WPWKO can be mounted with the output shaft pointing upward or downward. Standard is shaft-down; shaft-up is available on request and requires verification that the oil sump level and vent position are appropriate for that specific orientation. Contact Korea Ever-Power with your required mounting position when ordering this r\u00e9ducteur \u00e0 vis sans fin<\/strong>.<\/p>\n<\/div>\n

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Can I use a standard WPWO worm gear reducer vertically instead of the WPWKO?<\/h3>\n

You can install a WPWO vertically but it requires adding an external thrust bearing to handle the axial load from the driven mechanism, and verifying that the oil level and vent are correctly positioned for vertical orientation. The WPWKO eliminates these additional requirements \u2014 use it when the output shaft is permanently vertical and the driven load weight acts downward on the shaft. For occasional or temporary vertical use, the WPWO with an appropriate thrust bearing is acceptable.<\/p>\n<\/div>\n

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What is the maximum axial load the WPWKO output shaft can sustain?<\/h3>\n

The rated axial load capacity varies by frame size. Contact Korea Ever-Power with your specific frame size and axial load for a bearing life confirmation. Provide: frame size, ratio, axial load (N), radial load (N), and duty cycle for a complete assessment. Combined radial and axial loading must both be within the rated envelope of this r\u00e9ducteur \u00e0 vis sans fin<\/strong>.<\/p>\n<\/div>\n

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What oil type and change interval is recommended for vertical shaft operation?<\/h3>\n

ISO VG 220 mineral gear oil for 0\u201340\u00b0C ambient; synthetic ISO VG 220 or VG 320 for higher ambient temperatures. In vertical shaft operation, follow the WPWKO product manual specifically \u2014 the oil fill level and vent position differ from the horizontal WPWO. Change at 100 hours (first service), then every 2,000\u20133,000 hours or 12 months. This r\u00e9ducteur \u00e0 vis sans fin<\/strong> is warranted 18 months from shipment.<\/p>\n<\/div>\n

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Can an IEC motor be mounted directly on the WPWKO worm gear reducer?<\/h3>\n

Yes. The WPWKO input shaft is horizontal \u2014 it accepts standard IEC motor flanges (63B14, 71B14, 80B14, 90B14, and larger depending on frame size) directly. The motor mounts on the side of the housing while the output shaft points downward. This is the standard installation: horizontal motor + vertical shaft-down output from one compact r\u00e9ducteur \u00e0 vis sans fin<\/strong> unit.<\/p>\n<\/div>\n

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Is the self-locking reliable for safety-critical vertical load-hold in this worm gear reducer?<\/h3>\n

Self-locking at \u2265 20:1 is reliable for static load-hold under normal operating conditions. For safety-critical applications with elevated loads, regulatory compliance typically requires a supplementary certified holding brake regardless of worm gear self-locking \u2014 consult applicable machinery safety standards for your region. Self-locking in this r\u00e9ducteur \u00e0 vis sans fin<\/strong> should be considered a useful operational feature, not a primary safety device.<\/p>\n<\/div>\n

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What output coupling type is recommended for vertical shaft drives?<\/h3>\n

For vertical shaft drives, the coupling must handle both torque and axial weight load. Rigid keyway couplings or shaft-locking assemblies (shrink discs) are standard for direct vertical shaft connections. For driven shafts that must be disconnectable, a jaw coupling with axial thrust capability is preferred. Contact Korea Ever-Power with shaft diameter, transmitted torque, and the vertical load (weight of driven mechanism in Newtons) for a confirmed recommendation.<\/p>\n<\/div>\n<\/div>\n

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Customer Reviews \u2014 WPWKO Vertical Shaft Worm Gear Reducer<\/h2>\n
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\u2605\u2605\u2605\u2605\u2605<\/div>\n

“WPWKO80 at 30:1 for a warehouse goods hoist. Output shaft down, motor horizontal \u2014 fits in the headroom where a vertical motor would not. Self-locking holds the platform at rest between cycles. No brake needed. Running 17 months without issues. The worm gear reducer handles the axial load of the platform directly.”<\/p>\n

Jung Min-jun<\/strong>Facilities Engineer, Incheon Logistics Centre<\/span><\/p>\n<\/div>\n

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

“Used WPWKO120 for a vertical agitator shaft on a chemical reactor. The vertical output configuration meant we could mount the motor on the side and drop the shaft straight down into the vessel. No bevel stage, no alignment issues. The cast iron worm gear reducer handles the continuous axial load from the agitator weight without any signs of wear after 14 months.”<\/p>\n

Lee Seo-yeon<\/strong>Process Engineer, Gyeonggi-do Chemical Plant<\/span><\/p>\n<\/div>\n

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

“Stage platform lift drive \u2014 WPWKO100 at 40:1. Quiet enough for theatre operation, holds position when powered down, compact footprint under the stage floor. The cast iron worm gear reducer handles the vibration from the stage structure much better than the aluminium unit it replaced.”<\/p>\n

Choi Ha-yeon<\/strong>Stage Technical Director, Daejeon Cultural Centre<\/span><\/p>\n<\/div>\n

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

“WPWKO155 at 25:1 for a large vertical indexing table on our production line. 1,200 N\u00b7m output, motor mounted to the side. We ran the previous WPWO with an external thrust bearing for two years \u2014 the WPWKO eliminated that bearing entirely, simplified the assembly and reduced installation height by 90 mm. Exactly the worm gear reducer we needed.”<\/p>\n

Kang Hyun-jae<\/strong>Machine Design Engineer, Ulsan Automotive Parts OEM<\/span><\/p>\n<\/div>\n

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

“Used WPWKO70 at 20:1 for a height-adjustable laboratory bench vertical drive. Self-locking holds the bench at the set height when power is off \u2014 which is a safety requirement in our specification. The worm gear reducer runs quietly and has been zero-maintenance for 11 months. Dimensions confirmed with Korea Ever-Power drawings before order.”<\/p>\n

Park Ji-su<\/strong>Equipment Engineer, Seoul Medical Research Institute<\/span><\/p>\n<\/div>\n

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

“Replaced a bevel gearbox + separate vertical reducer combination with a single WPWKO200. Saved 240 mm total drive length, eliminated one coupling, reduced component count from 4 to 1. The vertical shaft worm gear reducer is now our standard for all new vertical conveyor lift heads. Korea Ever-Power supplied drawings and confirmation within one business day.”<\/p>\n

Yoo Seong-min<\/strong>Senior Engineer, Incheon Logistics Equipment Manufacturer<\/span><\/p>\n<\/div>\n<\/div>\n

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Specify Your WPWKO Vertical Shaft Worm Gear Reducer<\/h2>\n

Send your frame size, ratio, output torque, axial load, and required mounting position to ventes@worm-reducers.xyz<\/strong> \u2014 we confirm availability and provide dimensional drawings within 24 hours.<\/p>\n

All Worm Gear Reducers \u203a<\/a>
\nContact Korea Ever-Power<\/a><\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

WPWKO series worm gear reducer with vertical output shaft \u2014 frame sizes 40\u2013250, output torque 17\u20133,000 N\u00b7m, input power 0.12\u201315 kW. The ‘KO’ designation means the output shaft is oriented vertically (standard: shaft-down). Housing bearing arrangement, oil sump geometry, and vent position are designed for sustained vertical shaft operation \u2014 axial weight load of the driven mechanism is integrated without external thrust bearing. Motor mounts horizontally on housing side. Self-locking at ratios \u2265 20:1. Cast iron HT200. ISO 9001<\/p>","protected":false},"featured_media":1897,"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-1896","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\/1896","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=1896"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/media\/1897"}],"wp:attachment":[{"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/media?parent=1896"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product_brand?post=1896"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product_cat?post=1896"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/worm-reducers.xyz\/fr\/wp-json\/wp\/v2\/product_tag?post=1896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}