{"id":1917,"date":"2026-05-27T06:45:16","date_gmt":"2026-05-27T06:45:16","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpea-double-speed-worm-gear-reducer\/"},"modified":"2026-05-27T06:45:16","modified_gmt":"2026-05-27T06:45:16","slug":"wpea-double-speed-worm-gear-reducer","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/de\/product\/wpea-double-speed-worm-gear-reducer\/","title":{"rendered":"WPEA Double Speed Worm Gear Reducer"},"content":{"rendered":"
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WPEA Double Speed Worm Gear Reducer \u2014 Ultra-High Ratio 1\/200 to 1\/900 for Heavy Mining, Lifting & Process Drives<\/h1>\n

When a single-stage worm gearbox cannot achieve the extreme speed reduction demanded by mineral processing conveyors, heavy hoisting equipment, or slow-turning industrial stirrers, a two-stage worm drive<\/strong> is the engineered answer. The WPEA double speed worm gear reducer<\/strong> delivers reduction ratios from 1\/200 to 1\/900<\/strong> within a single compact foot-mounted cast iron housing \u2014 ratios impossible to achieve with any single-stage worm unit of equivalent dimensions.<\/p>\n

By cascading two precision worm-and-wheel stages in series, the WPEA achieves output torques up to 6,050 Nm (size 155-250, ratio 1\/900) at 1500 r\/min input \u2014 making it the go-to solution for heavy-duty double-speed worm gearbox<\/em> applications where ultra-low output speeds and very high torques are the non-negotiable design requirements. Available in 9 size groups<\/strong> (40-70 through 155-250 mm combined centre distance) with 5 shaft-direction positions (A\u2013E). \u00dcber Ever-power<\/a> | Request a Selection Calculation<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

Full dimensional data for all WPEA two-stage combinations. Reference input speed: 1500 r\/min<\/strong>. Size notation X-Y denotes first-stage\/second-stage combined centre distance. All dimensions in mm.<\/p>\n

\"WPEA<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nRatio<\/th>\nA<\/th>\nAA<\/th>\nAB<\/th>\nBB<\/th>\nBE<\/th>\nHL<\/th>\nLL<\/th>\nH<\/th>\nHA<\/th>\nHB<\/th>\nM<\/th>\nN<\/th>\nE<\/th>\nF<\/th>\nG<\/th>\nZ<\/th>\nHS<\/th>\nU<\/th>\nT\u00d7V<\/th>\nLS<\/th>\nS<\/th>\nW\u00d7Y<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40-70<\/td>\n1\/200\u20131\/900<\/td>\n286<\/td>\n195<\/td>\n153<\/td>\n131<\/td>\n87<\/td>\n110<\/td>\n140<\/td>\n238<\/td>\n70<\/td>\n50<\/td>\n150<\/td>\n190<\/td>\n115<\/td>\n150<\/td>\n20<\/td>\n15<\/td>\n25<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n60<\/td>\n26<\/td>\n7\u00d74<\/td>\n20<\/td>\n<\/tr>\n
50-80<\/td>\n<\/td>\n297<\/td>\n197<\/td>\n144<\/td>\n142<\/td>\n108<\/td>\n130<\/td>\n160<\/td>\n268<\/td>\n80<\/td>\n65<\/td>\n170<\/td>\n220<\/td>\n135<\/td>\n180<\/td>\n22<\/td>\n15<\/td>\n30<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n65<\/td>\n32<\/td>\n10\u00d74.5<\/td>\n27<\/td>\n<\/tr>\n
60-100<\/td>\n<\/td>\n363<\/td>\n231<\/td>\n175<\/td>\n169<\/td>\n120<\/td>\n160<\/td>\n200<\/td>\n336<\/td>\n100<\/td>\n75<\/td>\n190<\/td>\n270<\/td>\n155<\/td>\n220<\/td>\n25<\/td>\n15<\/td>\n40<\/td>\n15<\/td>\n5\u00d73<\/td>\n75<\/td>\n38<\/td>\n10\u00d74.5<\/td>\n44<\/td>\n<\/tr>\n
70-120<\/td>\n<\/td>\n408<\/td>\n256<\/td>\n193<\/td>\n190<\/td>\n140<\/td>\n190<\/td>\n240<\/td>\n430<\/td>\n120<\/td>\n90<\/td>\n230<\/td>\n320<\/td>\n180<\/td>\n260<\/td>\n30<\/td>\n18<\/td>\n40<\/td>\n18<\/td>\n5\u00d73<\/td>\n85<\/td>\n45<\/td>\n12\u00d74.5<\/td>\n73<\/td>\n<\/tr>\n
80-135<\/td>\n<\/td>\n471<\/td>\n298<\/td>\n226<\/td>\n210<\/td>\n160<\/td>\n215<\/td>\n270<\/td>\n480<\/td>\n135<\/td>\n105<\/td>\n250<\/td>\n350<\/td>\n200<\/td>\n290<\/td>\n33<\/td>\n18<\/td>\n50<\/td>\n22<\/td>\n7\u00d74<\/td>\n95<\/td>\n55<\/td>\n16\u00d76<\/td>\n101<\/td>\n<\/tr>\n
100-155<\/td>\n<\/td>\n555<\/td>\n354<\/td>\n269<\/td>\n252<\/td>\n190<\/td>\n235<\/td>\n290<\/td>\n531<\/td>\n135<\/td>\n130<\/td>\n275<\/td>\n390<\/td>\n220<\/td>\n320<\/td>\n35<\/td>\n21<\/td>\n50<\/td>\n25<\/td>\n7\u00d74<\/td>\n110<\/td>\n60<\/td>\n18\u00d77<\/td>\n144<\/td>\n<\/tr>\n
120-175<\/td>\n<\/td>\n568<\/td>\n379<\/td>\n287<\/td>\n255<\/td>\n219<\/td>\n280<\/td>\n335<\/td>\n600<\/td>\n160<\/td>\n155<\/td>\n310<\/td>\n430<\/td>\n250<\/td>\n350<\/td>\n40<\/td>\n21<\/td>\n65<\/td>\n30<\/td>\n7\u00d74<\/td>\n110<\/td>\n65<\/td>\n18\u00d77<\/td>\n201<\/td>\n<\/tr>\n
135-200<\/td>\n<\/td>\n662<\/td>\n425<\/td>\n318<\/td>\n319<\/td>\n256<\/td>\n310<\/td>\n375<\/td>\n666<\/td>\n175<\/td>\n185<\/td>\n360<\/td>\n480<\/td>\n290<\/td>\n390<\/td>\n40<\/td>\n24<\/td>\n75<\/td>\n35<\/td>\n10\u00d74.5<\/td>\n125<\/td>\n70<\/td>\n20\u00d77.5<\/td>\n293<\/td>\n<\/tr>\n
155-250<\/td>\n<\/td>\n795<\/td>\n510<\/td>\n380<\/td>\n385<\/td>\n295<\/td>\n355<\/td>\n450<\/td>\n800<\/td>\n200<\/td>\n203<\/td>\n460<\/td>\n560<\/td>\n380<\/td>\n480<\/td>\n45<\/td>\n28<\/td>\n85<\/td>\n40<\/td>\n12\u00d75<\/td>\n155<\/td>\n90<\/td>\n25\u00d79<\/td>\n462<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* Ratios available per size group: 1\/200, 1\/300, 1\/400, 1\/500, 1\/600, 1\/800, 1\/900. HS=input bore; U=depth; T\u00d7V=input keyway; LS=output shaft length; S=output diameter; W\u00d7Y=output keyway. HA and HB are front and rear housing height offsets.<\/p>\n<\/section>\n

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Product Structure \u2014 Two-Stage Worm Drive Design<\/h2>\n
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\"WPEA<\/div>\n
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The WPEA houses two independent worm-and-wheel pairs in a single cast iron body, arranged in series. The first-stage worm shaft receives motor power; its worm wheel drives the second-stage worm shaft; the second-stage worm wheel delivers the ultra-reduced output torque. The two gear sets are separated by an intermediate shaft and bearing arrangement that maintains precise alignment under full load.<\/p>\n\n\n\n\n\n\n\n\n
Stages<\/td>\nTwo independent worm-and-wheel stages in series within one housing<\/td>\n<\/tr>\n
Ratio Range<\/td>\n1\/200 \u2013 1\/900<\/strong> (product of two individual stage ratios)<\/td>\n<\/tr>\n
Housing<\/td>\nFC25 grey cast iron; CNC-machined mating faces; longer body than single-stage<\/td>\n<\/tr>\n
Worm Shafts<\/td>\n20CrMnTi carburised & ground, \u226558 HRC; both stages<\/td>\n<\/tr>\n
Worm Wheels<\/td>\nZCuSn10Pb1 tin-bronze rims; both stages<\/td>\n<\/tr>\n
Lubrication<\/td>\nShared splash oil bath serving both stages; oil volume higher than single-stage equivalent<\/td>\n<\/tr>\n
Shaft Positions<\/td>\n5 configurable orientations: A, B, C, D, E<\/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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\ufe0f<\/div>\n

Ultra-High Reduction Ratios \u2014 1\/200 to 1\/900<\/h3>\n

The WPEA achieves ratios from 1\/200 to 1\/900 in a single housing \u2014 ratios that would require two separate single-stage gearboxes in series with an intermediate shaft arrangement occupying far more floor space. For mineral processing, winch drives, and slow-turning kilns, this is the compact solution to extreme speed reduction. Keywords: ultra-high ratio double speed worm gearbox, two-stage worm reducer 1\/900.<\/em><\/p>\n<\/div>\n

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\u2699\ufe0f<\/div>\n

Two-Stage Precision Worm Pairs<\/h3>\n

Both worm-and-wheel pairs are ground to ISO 1328 Grade 7 tolerances. Despite the two gear meshes, the WPEA delivers noise levels \u226475 dB(A) at rated load \u2014 impressive for a two-stage drive. Transmission efficiency of 40\u201370% depending on combined ratio (two-stage efficiency is the product of individual stage efficiencies).<\/p>\n<\/div>\n

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\ufe0f<\/div>\n

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

The elongated FC25 cast iron housing is designed to handle the higher internal forces inherent in two-stage drives. Ribbed reinforcements at the intermediate bearing positions resist deflection under the high-torque loads typical of 1\/600+ ratio applications. Keywords: heavy-duty double speed worm drive, cast iron two-stage gearbox.<\/em><\/p>\n<\/div>\n

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Five Shaft-Direction Options<\/h3>\n

Five standard positions (A\u2013E) maintain the installation flexibility expected of the WPE series, allowing the WPEA to integrate into mining, chemical, and materials handling machine layouts without angle-drive accessories.<\/p>\n<\/div>\n

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Strong Self-Locking at High Combined Ratios<\/h3>\n

At combined ratios of 1\/400 and above, the WPEA provides robust self-locking behaviour under static conditions \u2014 preventing back-driving of connected loads. This is particularly valuable for hoisting and vertical conveying applications where gravity-induced reversal must be contained.<\/p>\n<\/div>\n

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Compact vs Two Single-Stage Units in Series<\/h3>\n

The WPEA two-stage housing is typically 30\u201340% shorter and lighter than the equivalent two-gearbox-in-series arrangement. This space and weight saving is significant in cramped mine drives, ship deck machinery, and elevated machine structures where every kilogram and millimetre matters.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

The WPEA double speed worm reducer excels in any application demanding extreme speed reduction in a compact, single-housing solution:<\/p>\n

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\u26cf\ufe0f<\/div>\n

Mining Conveyors & Hoists<\/strong>Underground and surface mine belt conveyor drives, mine hoist auxiliary drives, and ore transfer conveyor systems requiring 1\/400\u20131\/900 reduction ratios for ultra-slow, ultra-high-torque operation.<\/span><\/div>\n

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Cement & Lime Kilns<\/strong>Rotary kiln auxiliary (slow) drives, clinker cooler conveyor drives, and raw mill table feeder systems where 1\/600\u20131\/900 ratio drives prevent thermal damage to kiln bricks during start-up and maintenance.<\/span><\/div>\n

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\u2699\ufe0f<\/div>\n

Heavy Mixing & Agitation<\/strong>Large-volume industrial stirrer drives for bitumen, ceramic slurry, and heavy chemical mixing vessels requiring very low RPM and very high torque output continuously.<\/span><\/div>\n

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Marine & Port Equipment<\/strong>Harbour crane slewing drives, ship deck winch auxiliaries, and port container spreader drives where compact high-ratio gearboxes save valuable deck and crane boom space.<\/span><\/div>\n

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Grain & Bulk Handling<\/strong>Large silo discharge auger drives, grain warehouse drag conveyor drives, and bulk material reclaimer slewing mechanisms requiring reliable ultra-low-speed high-torque drives.<\/span><\/div>\n

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Heavy Machinery Auxiliaries<\/strong>Rolling mill pinch roll drives, heavy press flywheel deceleration drives, and large lathe slow-feed drives where the WPEA’s extreme ratio range provides precise ultra-low-speed control.<\/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 with CE Declaration of Conformity per shipment. Two-stage units are subject to enhanced gear-mesh dimensional checks covering both worm pairs \u2014 not only final output shaft geometry.<\/p>\n<\/div>\n

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Two-Stage Run Test<\/h3>\n

Each WPEA undergoes a two-stage loaded run test verifying: (1) noise \u226475 dB(A) across both gear meshes, (2) oil seal integrity under full torque, (3) output torque within \u00b15% of rated specification. Test duration: 45 minutes at rated input speed.<\/p>\n<\/div>\n

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\ufe0f Material Traceability<\/h3>\n

Housing: FC25 cast iron (\u2265250 MPa). Both worm shafts: 20CrMnTi (\u226558 HRC). Both wheel rims: ZCuSn10Pb1 tin-bronze. Full material mill certificates available for mining and marine sector compliance requirements.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPEA Double Speed Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We have been manufacturing WPE series two-stage worm gearboxes for over two decades, supplying mining equipment OEMs, cement plant machinery builders, and heavy marine equipment manufacturers in Australia, Germany, South Africa, the USA, and over 60 countries worldwide. Our two-stage housing production uses dedicated CNC boring lines that hold intermediate shaft bore-to-bore alignment to \u22640.02 mm \u2014 critical for correct gear mesh geometry across both stages.<\/p>\n