{"id":1845,"date":"2026-05-26T08:56:47","date_gmt":"2026-05-26T08:56:47","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpda-flange-mounted-single-speed-worm-gear-reducer\/"},"modified":"2026-05-26T08:56:47","modified_gmt":"2026-05-26T08:56:47","slug":"wpda-flange-mounted-single-speed-worm-gear-reducer","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/ja\/product\/wpda-flange-mounted-single-speed-worm-gear-reducer\/","title":{"rendered":"WPDA Flange-Mounted Single Speed Worm Gear Reducer"},"content":{"rendered":"
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WPDA Flange-Mounted Single Speed Worm Gear Reducer \u2014 Motor-Direct Integration for Compact, Zero-Backlash Drive Systems<\/h1>\n

Every additional component between a motor and its load introduces potential misalignment, backlash, and maintenance burden. The WPDA flange-mounted worm gear reducer<\/strong> eliminates these intermediaries entirely by incorporating an integral motor flange that accepts IEC\/NEMA standard motors directly \u2014 creating a compact, precisely aligned motor-gearbox unit without the need for couplings, spacers, or a separate motor baseplate. The result is a tighter transmission chain, lower vibration, reduced overall machine footprint, and significantly simplified installation.<\/p>\n

The WPDA accepts motors from 0.12 kW to 15 kW across 13 frame sizes<\/strong> (40\u2013250 mm) and supports all standard ratios from 1\/5 to 1\/60<\/strong>. Its FC25 cast iron housing delivers the same heavy-duty performance as the WPA footprint series, while the IEC flange connection ensures universal motor compatibility. This is the motor-direct worm gearbox<\/em> of choice for food processing machinery, packaging lines, and any application where machine build quality demands clean, compact drive integration. \u30a8\u30d0\u30fc\u30d1\u30ef\u30fc\u306b\u3064\u3044\u3066<\/a> | Request a Quote<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

Full dimensional and motor flange data for all WPDA sizes. Input reference speed: 1500 r\/min<\/strong>. Flange data: LA=flange OD; LB=pilot diameter; LC=bolt circle; LE=bolt count; LZ=bolt size. Input hole: Q=bore; U=depth; T\u00d7V=keyway. All dimensions in mm.<\/p>\n

\"WPDA<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nPower(kW)<\/th>\nRatio<\/th>\nA<\/th>\nAB<\/th>\nBB<\/th>\nCC<\/th>\nH<\/th>\nHL<\/th>\nM<\/th>\nN<\/th>\nE<\/th>\nF<\/th>\nG<\/th>\nZ<\/th>\nLA<\/th>\nLB<\/th>\nLC<\/th>\nLE<\/th>\nLZ<\/th>\nQ<\/th>\nU<\/th>\nT\u00d7V<\/th>\nLS<\/th>\nS<\/th>\nW\u00d7Y<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\n0.12<\/td>\n1\/5\u20131\/60<\/td>\n135<\/td>\n75<\/td>\n74<\/td>\n40<\/td>\n138<\/td>\n40<\/td>\n90<\/td>\n100<\/td>\n70<\/td>\n80<\/td>\n13<\/td>\n10<\/td>\n115<\/td>\n95<\/td>\n140<\/td>\n4<\/td>\nM8<\/td>\n31<\/td>\n11<\/td>\n4\u00d712.8<\/td>\n28<\/td>\n14<\/td>\n5\u00d73<\/td>\n5<\/td>\n<\/tr>\n
50<\/td>\n0.18<\/td>\n<\/td>\n151<\/td>\n83<\/td>\n97<\/td>\n50<\/td>\n176<\/td>\n50<\/td>\n120<\/td>\n140<\/td>\n95<\/td>\n110<\/td>\n15<\/td>\n12<\/td>\n115<\/td>\n95<\/td>\n140<\/td>\n4<\/td>\nM8<\/td>\n31<\/td>\n11<\/td>\n4\u00d712.8<\/td>\n40<\/td>\n17<\/td>\n5\u00d73<\/td>\n8<\/td>\n<\/tr>\n
60<\/td>\n0.37<\/td>\n<\/td>\n167<\/td>\n91<\/td>\n112<\/td>\n60<\/td>\n204<\/td>\n60<\/td>\n130<\/td>\n150<\/td>\n105<\/td>\n120<\/td>\n20<\/td>\n12<\/td>\n130<\/td>\n110<\/td>\n160<\/td>\n4<\/td>\nM8<\/td>\n33<\/td>\n14<\/td>\n5\u00d716.3<\/td>\n50<\/td>\n22<\/td>\n7\u00d74<\/td>\n11<\/td>\n<\/tr>\n
70<\/td>\n0.37\/0.75<\/td>\n<\/td>\n200\/202<\/td>\n109\/111<\/td>\n131<\/td>\n70<\/td>\n236<\/td>\n70<\/td>\n150<\/td>\n190<\/td>\n115<\/td>\n150<\/td>\n20<\/td>\n15<\/td>\n130\/165<\/td>\n110\/130<\/td>\n160\/200<\/td>\n4<\/td>\nM8\/M10<\/td>\n40\/42<\/td>\n14\/19<\/td>\n5\u00d716.3\/6\u00d721.8<\/td>\n60<\/td>\n28<\/td>\n7\u00d74<\/td>\n17<\/td>\n<\/tr>\n
80<\/td>\n0.75\/1.5<\/td>\n<\/td>\n225<\/td>\n125<\/td>\n142<\/td>\n80<\/td>\n268<\/td>\n80<\/td>\n170<\/td>\n220<\/td>\n135<\/td>\n180<\/td>\n20<\/td>\n15<\/td>\n165<\/td>\n130<\/td>\n200<\/td>\n4.5<\/td>\nM10<\/td>\n48\/52<\/td>\n19\/24<\/td>\n6\u00d721.8\/8\u00d727.3<\/td>\n65<\/td>\n32<\/td>\n10\u00d74.5<\/td>\n22<\/td>\n<\/tr>\n
100<\/td>\n1.5\/2.2\/3.0<\/td>\n<\/td>\n280<\/td>\n148<\/td>\n169<\/td>\n100<\/td>\n336<\/td>\n100<\/td>\n190<\/td>\n270<\/td>\n155<\/td>\n220<\/td>\n25<\/td>\n15<\/td>\n165<\/td>\n130<\/td>\n200<\/td>\n4.5<\/td>\nM10<\/td>\n52<\/td>\n24<\/td>\n8\u00d727.3<\/td>\n75<\/td>\n38<\/td>\n10\u00d74.5<\/td>\n38<\/td>\n<\/tr>\n
120<\/td>\n2.2\/3.0<\/td>\n<\/td>\n333<\/td>\n181<\/td>\n190<\/td>\n120<\/td>\n430<\/td>\n120<\/td>\n230<\/td>\n320<\/td>\n180<\/td>\n260<\/td>\n30<\/td>\n18<\/td>\n215<\/td>\n180<\/td>\n250<\/td>\n5<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n8\u00d731.3<\/td>\n85<\/td>\n45<\/td>\n12\u00d74.5<\/td>\n64<\/td>\n<\/tr>\n
135<\/td>\n3.0\/4.0<\/td>\n<\/td>\n375<\/td>\n202<\/td>\n210<\/td>\n135<\/td>\n480<\/td>\n135<\/td>\n250<\/td>\n350<\/td>\n200<\/td>\n290<\/td>\n30<\/td>\n18<\/td>\n215<\/td>\n180<\/td>\n250<\/td>\n5<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n8\u00d731.3<\/td>\n95<\/td>\n55<\/td>\n16\u00d76<\/td>\n85<\/td>\n<\/tr>\n
147<\/td>\n4.0<\/td>\n<\/td>\n415<\/td>\n235<\/td>\n210<\/td>\n147<\/td>\n460<\/td>\n123<\/td>\n250<\/td>\n350<\/td>\n200<\/td>\n280<\/td>\n32<\/td>\n18<\/td>\n215<\/td>\n180<\/td>\n250<\/td>\n5<\/td>\nM12<\/td>\n63<\/td>\n28<\/td>\n8\u00d731.3<\/td>\n95<\/td>\n55<\/td>\n16\u00d76<\/td>\n105<\/td>\n<\/tr>\n
155<\/td>\n5.5<\/td>\n<\/td>\n448<\/td>\n247<\/td>\n252<\/td>\n155<\/td>\n531<\/td>\n135<\/td>\n275<\/td>\n390<\/td>\n220<\/td>\n320<\/td>\n35<\/td>\n21<\/td>\n265<\/td>\n230<\/td>\n300<\/td>\n5<\/td>\nM12<\/td>\n83<\/td>\n38<\/td>\n10\u00d741.3<\/td>\n110<\/td>\n60<\/td>\n18\u00d77<\/td>\n118<\/td>\n<\/tr>\n
175<\/td>\n7.5<\/td>\n<\/td>\n481<\/td>\n262<\/td>\n255<\/td>\n175<\/td>\n600<\/td>\n160<\/td>\n310<\/td>\n430<\/td>\n250<\/td>\n350<\/td>\n40<\/td>\n21<\/td>\n265<\/td>\n230<\/td>\n300<\/td>\n5<\/td>\nM12<\/td>\n83<\/td>\n38<\/td>\n10\u00d741.3<\/td>\n110<\/td>\n65<\/td>\n18\u00d77<\/td>\n165<\/td>\n<\/tr>\n
200<\/td>\n11.0<\/td>\n<\/td>\n543<\/td>\n285<\/td>\n319<\/td>\n200<\/td>\n666<\/td>\n175<\/td>\n360<\/td>\n480<\/td>\n290<\/td>\n390<\/td>\n40<\/td>\n24<\/td>\n300<\/td>\n250<\/td>\n350<\/td>\n6<\/td>\nM16<\/td>\n114<\/td>\n42<\/td>\n12\u00d745.3<\/td>\n125<\/td>\n70<\/td>\n20\u00d77.5<\/td>\n236<\/td>\n<\/tr>\n
250<\/td>\n11.0\/15.0<\/td>\n<\/td>\n615<\/td>\n330<\/td>\n385<\/td>\n250<\/td>\n800<\/td>\n200<\/td>\n460<\/td>\n560<\/td>\n380<\/td>\n480<\/td>\n45<\/td>\n28<\/td>\n300<\/td>\n250<\/td>\n350<\/td>\n6<\/td>\nM16<\/td>\n114<\/td>\n42<\/td>\n12\u00d745.3<\/td>\n155<\/td>\n90<\/td>\n25\u00d79<\/td>\n396<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Motor powers shown are representative matched motor sizes. Multiple motor sizes are separated by \/. Flange dimensions comply with IEC 60034-7 standard motor mounting interfaces.<\/p>\n<\/section>\n

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Product Structure \u2014 Integral Motor Flange Design<\/h2>\n
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\"WPDA<\/div>\n
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The WPDA housing features a rear-face IEC motor flange with a precision-bored pilot register that locates the motor shaft concentrically within the input bore to within 0.05 mm TIR. A broached input keyway transmits motor torque directly to the worm shaft without any intermediate coupling element, eliminating the coupling alignment step entirely from the installation procedure.<\/p>\n\n\n\n\n\n\n\n\n
Housing<\/td>\nFC25 grey cast iron, same footprint as WPA base series<\/td>\n<\/tr>\n
Motor Flange<\/td>\nIEC 60034-7 standard dimensions; accepts single motor frame per size<\/td>\n<\/tr>\n
Input Drive<\/td>\nBroached input bore with keyway \u2014 motor shaft inserts directly, no coupling<\/td>\n<\/tr>\n
Worm Shaft<\/td>\n20CrMnTi carburised & ground, \u226558 HRC; driven by motor shaft via key<\/td>\n<\/tr>\n
Worm Wheel<\/td>\nZCuSn10Pb1 tin-bronze rim on ductile iron hub<\/td>\n<\/tr>\n
Output Shaft<\/td>\nSolid shaft with keyway; 5 direction positions (A\u2013E)<\/td>\n<\/tr>\n
Motor Compat.<\/td>\nY\/Y2 series (Chinese std.) and IE2\/IE3 IEC motors; 0.12\u201315 kW<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<\/div>\n<\/section>\n
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\u2705 Key Features & Benefits<\/h2>\n
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Direct Motor Integration \u2014 Zero Coupling<\/h3>\n

The IEC-compliant flange eliminates shaft couplings entirely. Motor-to-worm shaft connection is achieved by a direct keyed bore, cutting installation time from hours to minutes and permanently removing the coupling misalignment that is the leading cause of bearing and seal failure in indirect-drive gearboxes. Keywords: motor-direct worm gearbox, flange-mount worm reducer.<\/em><\/p>\n<\/div>\n<\/div>\n

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Precision Bore Alignment<\/h3>\n

The machined pilot register in the WPDA flange locates the motor frame to within 0.05 mm TIR, ensuring concentric motor shaft-to-worm axis alignment that minimises radial loads on the input bearings throughout the service life.<\/p>\n<\/div>\n<\/div>\n

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Rugged FC25 Cast Iron Housing<\/h3>\n

Identical material specification to the WPA series \u2014 FC25 grey cast iron providing outstanding impact resistance and vibration damping \u2014 ensures the WPDA delivers the same reliability in harsh industrial environments as the foot-mounted variants it is designed to replace.<\/p>\n<\/div>\n<\/div>\n

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\u2699\ufe0f<\/div>\n
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Precision Worm & Wheel Pair<\/h3>\n

Ground 20CrMnTi worm and ZCuSn10Pb1 bronze wheel to ISO 1328 Grade 7 tolerances deliver smooth, quiet power transmission (\u226472 dB(A)) with transmission efficiency of 60\u201390% depending on ratio. Keywords: precision worm gearbox for food processing.<\/em><\/p>\n<\/div>\n<\/div>\n

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Five Output Shaft Directions<\/h3>\n

Standard positions A through E allow the WPDA to integrate into any machine layout without angle-drive accessories, maintaining the installation flexibility of the foot-mounted WPA series within the compact motor-direct format.<\/p>\n<\/div>\n<\/div>\n

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Universal Motor Compatibility<\/h3>\n

WPDA flanges are dimensioned to IEC 60034-7 standards, accepting Y\/Y2 series Chinese standard motors and IE2\/IE3 efficiency class international motors. Matching motor power ratings from 0.12 kW (size 40) to 15 kW (size 250) span the full industrial drive spectrum.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

The WPDA motor-direct worm reducer is the preferred solution for compact machine design wherever an IEC motor is the prime mover:<\/p>\n

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Food Processing Machinery<\/strong>Bread slicing lines, dough mixers, conveyor drives, and portioning machines where the compact motor-gearbox unit reduces machine width and simplifies CE machine safety compliance.<\/span><\/div>\n

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Packaging & Labelling Lines<\/strong>Carton erectors, case sealers, label applicators, and shrink-wrap lines requiring precise, compact, hygienic drive units with minimal grease or oil exposure risk.<\/span><\/div>\n

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Pharmaceutical Manufacturing<\/strong>Tablet press auxiliaries, blister packaging drives, and clean-room conveyor systems where the WPDA’s compact, sealed configuration minimises contamination risk.<\/span><\/div>\n

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Paint & Coating Lines<\/strong>Mixer drives, conveyor units, and automated surface treatment machinery benefiting from the WPDA’s compact footprint and vibration-free motor-direct drive.<\/span><\/div>\n

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FMCG & Beverages<\/strong>Filling machines, capping lines, and labelling systems in fast-moving consumer goods production where quick motor swap-out during servicing is a maintenance advantage.<\/span><\/div>\n

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Light Industrial Automation<\/strong>Assembly line conveyors, pick-and-place auxiliaries, and material handling systems in general automation requiring a small, clean, reliable gearbox-motor unit.<\/span><\/div>\n<\/div>\n<\/section>\n

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Quality Control & Certification<\/h2>\n
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ISO 9001:2015 & CE<\/h3>\n

Full ISO 9001:2015 QMS. CE Declaration of Conformity per shipment. The WPDA’s IEC flange interface is dimensionally verified against IEC 60034-7 specifications at final inspection to ensure correct motor fit without shimming or modification.<\/p>\n<\/div>\n

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Flange Concentricity & Run-Out Test<\/h3>\n

In addition to standard noise and leakage tests, each WPDA unit is checked for flange pilot concentricity<\/strong> (\u22640.05 mm TIR) and input bore alignment relative to the output shaft centreline. This ensures the motor shaft enters the input bore without side load on the motor bearings.<\/p>\n<\/div>\n

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Material Standards<\/h3>\n

Housing: FC25 cast iron (\u2265250 MPa). Worm: 20CrMnTi (\u226558 HRC). Wheel rim: ZCuSn10Pb1 tin-bronze. Full material mill certificates provided on request for food-grade machine compliance documentation.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPDA Motor-Direct Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We manufacture WPDA motor-direct gearboxes for food, packaging, and pharmaceutical OEMs across Japan, the Netherlands, Poland, Australia, and more than 60 countries worldwide. Our in-house flange machining and CMM inspection ensure every unit meets IEC 60034-7 dimensional compliance before shipment.<\/p>\n