{"id":1930,"date":"2026-05-27T06:45:29","date_gmt":"2026-05-27T06:45:29","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpwek-hollow-shaft-flange-base-double-speed-worm-gear-reducer\/"},"modified":"2026-05-27T06:45:29","modified_gmt":"2026-05-27T06:45:29","slug":"wpwek-hollow-shaft-flange-base-double-speed-worm-gear-reducer","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/pt\/product\/wpwek-hollow-shaft-flange-base-double-speed-worm-gear-reducer\/","title":{"rendered":"WPWEK Hollow Shaft Flange-Base Double Speed Worm Gear Reducer"},"content":{"rendered":"
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WPWEK Hollow Shaft Flange-Base Double Speed Worm Gear Reducer \u2014 Rigidly Anchored Coupling-Free Ultra-High Ratio Drive for Mining & Heavy Metallurgy<\/h1>\n

Mining hoist auxiliaries, heavy metallurgical equipment, and large-scale industrial drives share a demanding specification: the gearbox must deliver ultra-high reduction ratios (1\/200\u20131\/900) for controlled very-low-speed operation, mount directly onto the driven shaft without any coupling hardware, and remain anchored against the extreme reaction torques of two-stage operation without bolt loosening over years of heavy service. The WPWEK hollow shaft flange-base double speed worm gear reducer<\/strong> addresses all three simultaneously.<\/p>\n

Where the WPEKA delivers coupling-free hollow shaft at ultra-high ratios in a standard foot-mount, and the WPWE delivers flanged-base rigidity for solid-shaft two-stage drives, the WPWEK combines both features \u2014 hollow bore AND flanged anchor base \u2014 in a single casting. The result is the most structurally rigid coupling-free two-stage drive available in the WPE series. Available in 9 size groups<\/strong>, bore 30\u2013110 mm, ratios 1\/200\u20131\/900. Sobre a Ever-power<\/a> | Solicite um or\u00e7amento<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

Full dimensional data for all WPWEK sizes. AC, BC = flange arm dimensions; AD, BD = bolt hole positions; Z\u00d7L = anchor bolt specification; S = hollow bore (H7); W\u00d7Y = bore keyway. HH = lateral height; HL = housing height. Reference speed 1500 r\/min<\/strong>. All dimensions in mm.<\/p>\n

\"WPWEK<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nRatio<\/th>\nUM<\/th>\nAA<\/th>\nAB<\/th>\nB<\/th>\nBE<\/th>\nAC<\/th>\nBC<\/th>\nAD<\/th>\nBD<\/th>\nHH<\/th>\nHL<\/th>\nLL<\/th>\nH<\/th>\nZ\u00d7L<\/th>\nHS<\/th>\nU<\/th>\nT\u00d7V<\/th>\nS(bore)<\/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>\n130<\/td>\n87<\/td>\n152<\/td>\n86<\/td>\n125<\/td>\n65<\/td>\n35<\/td>\n200<\/td>\n90<\/td>\n215<\/td>\nM10\u00d725<\/td>\n25<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n30<\/td>\n8\u00d733.3<\/td>\n17<\/td>\n<\/tr>\n
50-80<\/td>\n<\/td>\n297<\/td>\n197<\/td>\n144<\/td>\n150<\/td>\n108<\/td>\n169<\/td>\n102<\/td>\n140<\/td>\n70<\/td>\n35<\/td>\n235<\/td>\n105<\/td>\n250<\/td>\nM12\u00d728<\/td>\n30<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n35<\/td>\n10\u00d738.3<\/td>\n28<\/td>\n<\/tr>\n
60-100<\/td>\n<\/td>\n363<\/td>\n231<\/td>\n175<\/td>\n160<\/td>\n120<\/td>\n216<\/td>\n117<\/td>\n180<\/td>\n90<\/td>\n42<\/td>\n290<\/td>\n130<\/td>\n310<\/td>\nM12\u00d730<\/td>\n40<\/td>\n15<\/td>\n5\u00d73<\/td>\n40<\/td>\n12\u00d743.3<\/td>\n43<\/td>\n<\/tr>\n
70-120<\/td>\n<\/td>\n408<\/td>\n256<\/td>\n193<\/td>\n175<\/td>\n140<\/td>\n256<\/td>\n124<\/td>\n220<\/td>\n100<\/td>\n55<\/td>\n345<\/td>\n155<\/td>\n370<\/td>\nM14\u00d732<\/td>\n40<\/td>\n18<\/td>\n5\u00d73<\/td>\n45<\/td>\n14\u00d748.8<\/td>\n64<\/td>\n<\/tr>\n
80-135<\/td>\n<\/td>\n471<\/td>\n298<\/td>\n226<\/td>\n210<\/td>\n160<\/td>\n296<\/td>\n147<\/td>\n260<\/td>\n110<\/td>\n65<\/td>\n400<\/td>\n185<\/td>\n425<\/td>\nM16\u00d735<\/td>\n50<\/td>\n22<\/td>\n7\u00d74<\/td>\n60<\/td>\n18\u00d764.4<\/td>\n99<\/td>\n<\/tr>\n
100-155<\/td>\n<\/td>\n555<\/td>\n354<\/td>\n269<\/td>\n256<\/td>\n190<\/td>\n345<\/td>\n185<\/td>\n280<\/td>\n120<\/td>\n80<\/td>\n458<\/td>\n203<\/td>\n461<\/td>\nM16\u00d735<\/td>\n50<\/td>\n25<\/td>\n7\u00d74<\/td>\n70<\/td>\n20\u00d774.9<\/td>\n136<\/td>\n<\/tr>\n
120-175<\/td>\n<\/td>\n598<\/td>\n379<\/td>\n287<\/td>\n282<\/td>\n219<\/td>\n374<\/td>\n192<\/td>\n320<\/td>\n140<\/td>\n95<\/td>\n518<\/td>\n223<\/td>\n521<\/td>\nM16\u00d735<\/td>\n65<\/td>\n30<\/td>\n7\u00d74<\/td>\n80<\/td>\n22\u00d785.4<\/td>\n193<\/td>\n<\/tr>\n
135-200<\/td>\n<\/td>\n662<\/td>\n425<\/td>\n318<\/td>\n320<\/td>\n256<\/td>\n412<\/td>\n230<\/td>\n360<\/td>\n150<\/td>\n105<\/td>\n580<\/td>\n245<\/td>\n575<\/td>\nM20\u00d736<\/td>\n75<\/td>\n35<\/td>\n10\u00d74.5<\/td>\n85<\/td>\n22\u00d790.4<\/td>\n280<\/td>\n<\/tr>\n
155-250<\/td>\n<\/td>\n795<\/td>\n510<\/td>\n380<\/td>\n400<\/td>\n295<\/td>\n500<\/td>\n285<\/td>\n420<\/td>\n190<\/td>\n103<\/td>\n705<\/td>\n300<\/td>\n700<\/td>\nM24\u00d742<\/td>\n85<\/td>\n40<\/td>\n12\u00d75<\/td>\n110<\/td>\n28\u00d7116.4<\/td>\n442<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* S = hollow bore H7; W\u00d7Y = bore keyway. Z\u00d7L = anchor bolt specification (e.g. M16\u00d735). AC, BC define flange arm geometry; AD, BD define bolt hole spacing. WPWEK and WPEKA share identical bore dimensions \u2014 flanged base is the sole dimensional difference.<\/p>\n<\/section>\n

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Product Structure \u2014 Two-Stage Cascade + Hollow Bore + Flanged Base<\/h2>\n
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\"WPWEK<\/div>\n
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The WPWEK integrates the H7 hollow output bore of the WPEKA series with the flanged anchor base of the WPWE series. The second-stage worm wheel shaft is through-bored to H7 and fitted with a keyway for direct driven shaft engagement. The wider housing extends laterally to accommodate the flanged base arms, which are precision-machined flat and drilled for anchor bolt positions matching each size group’s Z\u00d7L specification.<\/p>\n\n\n\n\n\n\n\n
Drive Stages<\/td>\nTwo worm-and-wheel pairs in series; ratio 1\/200\u20131\/900<\/td>\n<\/tr>\n
Output Bore<\/td>\nH7 hollow bore + keyway; 30\u2013110 mm; coupling-free direct shaft mount<\/td>\n<\/tr>\n
Anchor Base<\/td>\nIntegral flanged base; multiple anchor bolt positions; precision flat \u22640.05 mm<\/td>\n<\/tr>\n
Housing<\/td>\nFC25 cast iron; wider than WPEKA to accommodate flange arms<\/td>\n<\/tr>\n
Input<\/td>\nStandard solid shaft with keyway; 5 direction positions (A\u2013E)<\/td>\n<\/tr>\n
Self-Locking<\/td>\nStrong static self-locking at combined ratios \u22651\/400<\/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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Hollow Bore + Flanged Base \u2014 The Heavy Industrial Combination<\/h3>\n

Where WPEKA provides coupling-free hollow bore in a foot-mount housing, and WPWE provides flanged base rigidity for solid-shaft drives, the WPWEK delivers both simultaneously. For mining and metallurgical applications with long-shaft direct mounting AND high reaction torques that demand flanged base anchoring, the WPWEK is the engineered solution. Keywords: hollow shaft flange-base double speed worm gearbox, rigid anchor coupling-free two-stage reducer.<\/em><\/p>\n<\/div>\n

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\ufe0f<\/div>\n

Superior Mounting Stability vs WPEKA<\/h3>\n

At 1\/600\u20131\/900 combined ratios, the hollow shaft drive generates substantial reaction torques in the housing \u2014 higher than at lower ratios, because output torque is highest at the highest ratios. The WPWEK flanged base distributes these reaction forces over a far larger footprint than the WPEKA foot-mount pads, preventing bolt loosening in continuous heavy industrial service.<\/p>\n<\/div>\n

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\u2699\ufe0f<\/div>\n

Two-Stage Hollow Bore for Long-Shaft Drives<\/h3>\n

Mining hoist drums, heavy metallurgical roller tables, and blast furnace charging screws often have long shafts that benefit from hollow bore direct mounting \u2014 placing the gearbox as close as possible to the shaft bearing, reducing overhung bending loads. The WPWEK delivers this compact hollow-bore arrangement at ultra-high reduction ratios.<\/p>\n<\/div>\n

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Eliminates Coupling in High-Reaction-Torque Applications<\/h3>\n

In mining and metallurgical environments, coupling maintenance under high reaction torque is a common and costly maintenance event. The WPWEK hollow bore eliminates the output coupling entirely \u2014 removing a wearing, alignment-sensitive component from some of the most demanding drive applications in heavy industry.<\/p>\n<\/div>\n

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Full 9-Size Range \u2014 30 to 110 mm Bore<\/h3>\n

Nine size groups cover bore diameters from 30 mm (size 40-70, smaller mining auxiliary drives) to 110 mm (size 155-250, very large mining hoist and metallurgical equipment shafts) \u2014 providing a single standardised product family for the full range of heavy industrial hollow shaft two-stage applications.<\/p>\n<\/div>\n

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Self-Locking for Safe Load Holding<\/h3>\n

At combined ratios \u22651\/400, the WPWEK provides static self-locking that prevents gravity-driven reversal of connected loads. Combined with the flanged base rigidity, this makes the WPWEK a secure, stable drive that holds position safely when de-energised \u2014 important for mining hoists and vertical metallurgical equipment.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Aplica\u00e7\u00f5es industriais<\/h2>\n

The WPWEK is the premium specification for mining, metallurgical, and heavy industrial drives requiring both coupling-free hollow shaft mounting and maximum structural rigidity:<\/p>\n

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\u26cf\ufe0f<\/div>\n

Mining Hoist & Hoisting Equipment<\/strong>Underground mine hoist auxiliary slow drives, shaft hoisting system control drives, and mine winder primary auxiliaries where hollow shaft direct mounting onto the drum shaft AND flanged base anchor rigidity are both required.<\/span><\/div>\n

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Heavy Metallurgy<\/strong>Blast furnace charging screw drives, rolling mill table roller hollow-shaft drives, and heavy slab pusher drives requiring direct hollow-shaft engagement with flanged base anchor mounting to the mill structural steelwork.<\/span><\/div>\n

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Large Conveyor & Transfer Equipment<\/strong>Large mining conveyor head drum direct hollow-shaft drives, heavy-duty bulk transfer conveyor drives, and open-cast mine overburden conveyor drives requiring both coupling-free mounting and flanged base structural anchoring.<\/span><\/div>\n

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\u2693<\/div>\n

Harbour & Port Equipment<\/strong>Harbour crane slewing mechanism hollow-shaft drives, ship loader travel drives, and heavy port conveyor drives where hollow shaft coupling-free mounting combined with flanged base anchor are needed for compactness and rigidity.<\/span><\/div>\n

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Steel & Aluminium Production<\/strong>Steel rolling mill roller table auxiliary drives, aluminium smelter anode setting crane drives, and heavy casting line transport roller drives requiring direct hollow-shaft engagement at ultra-high ratios.<\/span><\/div>\n

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Large Infrastructure Projects<\/strong>Large dam gate operating mechanism drives, heavy lock gate worm gear drives, and major infrastructure sluice control systems where the hollow shaft plus flanged base combination provides the most compact and rigid direct-drive arrangement.<\/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. Mining sector material certs and third-party SGS\/BV inspection available. Bore H7 plug gauged and base flatness CMM scanned (\u22640.05 mm TIR) on every WPWEK unit before shipment.<\/p>\n<\/div>\n

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Dual Interface + Two-Stage Run Test<\/h3>\n

Each WPWEK undergoes: (1) H7 bore plug gauge, (2) bore concentricity CMM check (\u22640.05 mm TIR), (3) base flatness scan (\u22640.05 mm TIR), (4) 45-min two-stage run test verifying noise \u226475 dB(A), seal integrity, and output torque \u00b15% of rated. Three dimensional checks plus run test.<\/p>\n<\/div>\n

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\ufe0f Mining-Grade Material Standards<\/h3>\n

Housing and flange: FC25 cast iron (\u2265250 MPa). Both worm shafts: 20CrMnTi (\u226558 HRC). Wheel rims: ZCuSn10Pb1 tin-bronze. Full material mill certs available for mining OEM and infrastructure project compliance documentation requirements.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPWEK Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We supply WPWEK hollow shaft flanged-base two-stage gearboxes to mining equipment OEMs, metallurgical machinery builders, and heavy infrastructure equipment manufacturers in Canada, Poland, India, Australia, and over 60 countries. Our three-check inspection standard \u2014 bore, concentricity, and base flatness, all CMM-verified \u2014 ensures that WPWEK units deliver correct shaft fit AND correct structural anchor at every installation site, without field adjustment.<\/p>\n