{"id":1939,"date":"2026-05-27T06:57:57","date_gmt":"2026-05-27T06:57:57","guid":{"rendered":"https:\/\/chinawormgearbox.xyz\/product\/wpwko-universal-hollow-shaft-worm-gear-reducer-multi-direction-mount\/"},"modified":"2026-05-27T06:57:57","modified_gmt":"2026-05-27T06:57:57","slug":"wpwko-universal-hollow-shaft-worm-gear-reducer-multi-direction-mount","status":"publish","type":"product","link":"https:\/\/chinawormgearbox.xyz\/de\/product\/wpwko-universal-hollow-shaft-worm-gear-reducer-multi-direction-mount\/","title":{"rendered":"WPWKO Universal Hollow Shaft Worm Gear Reducer Multi-Direction Mount"},"content":{"rendered":"
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WPWKO Universal Hollow Shaft Worm Gear Reducer \u2014 Coupling-Free Direct Shaft Mount with Up to Six Orientations for Port, Crane & Process Drives<\/h1>\n

Port crane drum drives, inclined mine conveyor head drives, and vertical process agitators often share a compound requirement: the gearbox output must connect directly to the driven shaft without a coupling (for compactness and maintenance simplicity), AND the gearbox must be mounted at a non-horizontal angle dictated by the machine structure. The WPWKO universal hollow shaft worm gear reducer<\/strong> addresses both requirements simultaneously by combining the H7 hollow bore coupling-free output of the WPWK series with the multi-direction mounting capability (up to 6 positions) of the WPWO platform.<\/p>\n

Hollow bore diameters from 16 mm (size 40) to 110 mm (size 250)<\/strong>, ratios 1\/5\u20131\/60, 12 size groups, up to six mounting orientations with multi-face oil ports. \u00dcber Ever-power<\/a> | Request a Bore Size Consultation<\/a><\/p>\n<\/section>\n

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Technical Specifications<\/h2>\n

WPWKO has its own specification drawing. A, AB = housing width dimensions; B = bore-face housing width; E, E\u2081, E\u2082 = output bore geometry; S = hollow bore diameter (H7); W\u00d7Y = bore keyway. Reference speed 1500 r\/min<\/strong>. All dimensions in mm.<\/p>\n

\"WPWKO<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nRatio<\/th>\nA<\/th>\nAB<\/th>\nB<\/th>\nBC<\/th>\nCC<\/th>\nM<\/th>\nN<\/th>\nE<\/th>\nE\u2081<\/th>\nE\u2082<\/th>\nG<\/th>\nZ<\/th>\nHS<\/th>\nU<\/th>\nT\u00d7V<\/th>\nS(bore)<\/th>\nW\u00d7Y<\/th>\nWt(kg)<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\n1\/5\u20131\/60<\/td>\n143<\/td>\n87<\/td>\n85<\/td>\n45<\/td>\n40<\/td>\n95<\/td>\n187<\/td>\n70<\/td>\n72<\/td>\n97<\/td>\n12<\/td>\n10<\/td>\n25<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n16<\/td>\n6\u00d718.8<\/td>\n5<\/td>\n<\/tr>\n
50<\/td>\n<\/td>\n175<\/td>\n108<\/td>\n105<\/td>\n50<\/td>\n50<\/td>\n111<\/td>\n228<\/td>\n90<\/td>\n90<\/td>\n110<\/td>\n14<\/td>\n12<\/td>\n30<\/td>\n12<\/td>\n4\u00d72.5<\/td>\n20<\/td>\n6\u00d722.8<\/td>\n8<\/td>\n<\/tr>\n
60<\/td>\n<\/td>\n198<\/td>\n120<\/td>\n110<\/td>\n55<\/td>\n60<\/td>\n127<\/td>\n257<\/td>\n100<\/td>\n102<\/td>\n129<\/td>\n15<\/td>\n12<\/td>\n40<\/td>\n15<\/td>\n5\u00d73<\/td>\n25<\/td>\n8\u00d728.3<\/td>\n11<\/td>\n<\/tr>\n
70<\/td>\n<\/td>\n231<\/td>\n140<\/td>\n130<\/td>\n65<\/td>\n70<\/td>\n152<\/td>\n305<\/td>\n120<\/td>\n120<\/td>\n155<\/td>\n20<\/td>\n15<\/td>\n40<\/td>\n18<\/td>\n5\u00d73<\/td>\n30<\/td>\n8\u00d733.3<\/td>\n15.5<\/td>\n<\/tr>\n
80<\/td>\n<\/td>\n261<\/td>\n160<\/td>\n150<\/td>\n70<\/td>\n80<\/td>\n174<\/td>\n350<\/td>\n140<\/td>\n140<\/td>\n180<\/td>\n20<\/td>\n15<\/td>\n50<\/td>\n22<\/td>\n7\u00d74<\/td>\n35<\/td>\n10\u00d738.3<\/td>\n24<\/td>\n<\/tr>\n
100<\/td>\n<\/td>\n322<\/td>\n190<\/td>\n160<\/td>\n90<\/td>\n100<\/td>\n224<\/td>\n410<\/td>\n190<\/td>\n165<\/td>\n215<\/td>\n22<\/td>\n15<\/td>\n50<\/td>\n25<\/td>\n7\u00d74<\/td>\n40<\/td>\n12\u00d743.3<\/td>\n38<\/td>\n<\/tr>\n
120<\/td>\n<\/td>\n371<\/td>\n219<\/td>\n175<\/td>\n100<\/td>\n120<\/td>\n264<\/td>\n494<\/td>\n220<\/td>\n195<\/td>\n255<\/td>\n25<\/td>\n18<\/td>\n65<\/td>\n30<\/td>\n7\u00d74<\/td>\n45<\/td>\n14\u00d748.8<\/td>\n56<\/td>\n<\/tr>\n
135<\/td>\n<\/td>\n422<\/td>\n249<\/td>\n210<\/td>\n110<\/td>\n135<\/td>\n304<\/td>\n559<\/td>\n260<\/td>\n230<\/td>\n285<\/td>\n30<\/td>\n18<\/td>\n75<\/td>\n35<\/td>\n10\u00d74.5<\/td>\n60<\/td>\n18\u00d764.4<\/td>\n84<\/td>\n<\/tr>\n
155<\/td>\n<\/td>\n497<\/td>\n295<\/td>\n252<\/td>\n140<\/td>\n155<\/td>\n345<\/td>\n605<\/td>\n290<\/td>\n250<\/td>\n305<\/td>\n35<\/td>\n21<\/td>\n85<\/td>\n40<\/td>\n12\u00d75<\/td>\n70<\/td>\n20\u00d774.9<\/td>\n129<\/td>\n<\/tr>\n
175<\/td>\n<\/td>\n534<\/td>\n314<\/td>\n282<\/td>\n150<\/td>\n175<\/td>\n374<\/td>\n675<\/td>\n320<\/td>\n273<\/td>\n348<\/td>\n40<\/td>\n21<\/td>\n85<\/td>\n45<\/td>\n14\u00d75.5<\/td>\n80<\/td>\n22\u00d785.4<\/td>\n157<\/td>\n<\/tr>\n
200<\/td>\n<\/td>\n580<\/td>\n342<\/td>\n320<\/td>\n175<\/td>\n200<\/td>\n424<\/td>\n749<\/td>\n370<\/td>\n305<\/td>\n390<\/td>\n40<\/td>\n24<\/td>\n95<\/td>\n50<\/td>\n14\u00d75.5<\/td>\n85<\/td>\n22\u00d790.4<\/td>\n224<\/td>\n<\/tr>\n
250<\/td>\n<\/td>\n705<\/td>\n420<\/td>\n400<\/td>\n200<\/td>\n250<\/td>\n510<\/td>\n920<\/td>\n440<\/td>\n375<\/td>\n475<\/td>\n45<\/td>\n28<\/td>\n110<\/td>\n60<\/td>\n18\u00d77<\/td>\n110<\/td>\n28\u00d7116.4<\/td>\n374<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

* S = hollow bore H7 tolerance; driven shaft must be ground to h6\/js6. W\u00d7Y = bore keyway. E, E\u2081, E\u2082 = output bore geometry. Up to 6 mounting positions (A\u2013F) \u2014 position-specific oil fill instructions supplied with each unit. Input: HS=bore; U=depth; T\u00d7V=keyway.<\/p>\n<\/section>\n

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Product Structure \u2014 H7 Hollow Bore + Multi-Orientation Universal Housing<\/h2>\n
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\"WPWKO<\/div>\n
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The WPWKO second-stage worm wheel shaft is through-bored to H7 precision and fitted with a keyway. The driven shaft slides directly in from the housing face. The housing body extends the WPWO multi-direction platform with additional mounting face preparations, reinforced output shaft bearings for combined axial\/radial vertical loads, and multi-face oil ports for correct lubrication at every supported orientation.<\/p>\n\n\n\n\n\n\n\n
Output Bore<\/td>\nH7 hollow bore with keyway; 16 mm (size 40) to 110 mm (size 250)<\/td>\n<\/tr>\n
Orientations<\/td>\nUp to 6 positions (A\u2013F) including vertical up, vertical down, inclined<\/td>\n<\/tr>\n
Bearings<\/td>\nReinforced output shaft bearings for vertical\/inclined load vectors<\/td>\n<\/tr>\n
Oil System<\/td>\nMulti-face ports; correct oil level for all supported positions<\/td>\n<\/tr>\n
Self-Locking<\/td>\nAt ratios \u22651\/30 \u2014 all mounting orientations including vertical<\/td>\n<\/tr>\n
Housing<\/td>\nFC25 cast iron; extended body for multi-orientation bearing support<\/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 + Multi-Direction Mount \u2014 No Other WPW Product Combines Both<\/h3>\n

The WPWKO uniquely combines H7 hollow bore coupling-free output with multi-direction mounting including full vertical. WPWK has hollow bore but limited orientations; WPWO has multi-direction but solid shaft. WPWKO delivers both \u2014 coupling-free direct shaft engagement at any supported mounting angle. Keywords: hollow shaft multi-direction universal worm reducer, coupling-free vertical worm gearbox.<\/em><\/p>\n<\/div>\n

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Correct Oil Lubrication at Every Orientation<\/h3>\n

The hollow bore output is positioned at the same housing face in all orientations, but the oil port system is configured to maintain correct gear mesh and bearing lubrication regardless of mounting angle. Every WPWKO is shipped with a position-specific oil fill instruction sheet for all supported orientations.<\/p>\n<\/div>\n

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Self-Locking in Vertical Hollow Bore Applications<\/h3>\n

At ratios \u22651\/30, the WPWKO self-locks in all orientations including vertical \u2014 preventing coupled shaft back-drive under gravity when the motor stops. For vertical pump, agitator, and crane drum hollow shaft applications, this passive safety feature is particularly valuable.<\/p>\n<\/div>\n

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\u2699\ufe0f<\/div>\n

H7 Precision Bore \u2014 No Field Reaming<\/h3>\n

The hollow bore is ground to H7 tolerance in our facility. Driven shafts ground to h6\/js6 mate directly without field reaming \u2014 important for crane and port machinery installations where on-site machining is impractical.<\/p>\n<\/div>\n

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\ufe0f<\/div>\n

Compact vs Right-Angle Adapter + Hollow Coupling<\/h3>\n

Using WPWKO at a non-standard angle avoids a right-angle adapter (to redirect shaft) PLUS a hollow shaft coupling (to connect to driven shaft). The WPWKO combines both functions in one housing, saving weight, height, and mechanical complexity in crane and elevated machine structures.<\/p>\n<\/div>\n

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Full 12-Size Range \u2014 16 to 110 mm Bore<\/h3>\n

Twelve sizes covering bore diameters from 16 mm (small crane auxiliary) to 110 mm (large mine hoist drum shaft) and output torques up to 2,371 Nm provide the complete range of hollow shaft multi-direction drive requirements.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Industry Applications<\/h2>\n

WPWKO is specified wherever hollow bore coupling-free output must be combined with multi-direction mounting flexibility:<\/p>\n

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\ufe0f<\/div>\n

Port & Crane Hollow Shaft Drives<\/strong>Ship loader slewing drum drives, harbour crane hoist drum drives, and quay crane auxiliary drives where hollow shaft coupling-free mounting on the drum shaft AND vertical or inclined mounting angle are both required.<\/span><\/div>\n

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\u26cf\ufe0f<\/div>\n

Mine Hoist & Inclined Conveyor Hollow Drives<\/strong>Underground mine hoist drum hollow shaft drives and inclined mine conveyor head drum drives where hollow shaft direct engagement AND non-horizontal mounting are simultaneously required.<\/span><\/div>\n

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Vertical Agitator & Pump Hollow Drives<\/strong>Top-entry vessel agitator hollow shaft drives and vertical pump shaft drives where coupling-free direct bore engagement AND vertical mounting must both be specified.<\/span><\/div>\n

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Elevated Machine Structures<\/strong>Elevated conveyor head drives, tiered production line direct shaft drives, and overhead machine drives where hollow shaft mounting AND non-standard mounting angles are both design requirements.<\/span><\/div>\n

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Marine & Offshore Hollow Shaft Drives<\/strong>Marine winch drum hollow shaft drives, offshore platform deck machinery drives, and marine hatch cover mechanism drives requiring hollow bore direct engagement in vertical or inclined offshore structural configurations.<\/span><\/div>\n

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\u2699\ufe0f<\/div>\n

Heavy Process Equipment<\/strong>Rotary drum hollow shaft drives, large trommel screen direct shaft drives, and large dryer drum hollow shaft drives where both hollow bore direct engagement and varied mounting angles are needed.<\/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. Marine and port authority documentation packages available. Bore H7 plug gauged and bore concentricity CMM checked (\u22640.05 mm TIR). Vertical position oil fill verified on every unit.<\/p>\n<\/div>\n

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Bore + Multi-Position Verification<\/h3>\n

Each WPWKO undergoes: (1) bore H7 plug gauge; (2) bore concentricity CMM check; (3) multi-orientation run test in horizontal and vertical positions confirming noise \u226472 dB(A), seal integrity, and torque \u00b15% in both orientations; (4) vertical oil fill verification. Position-specific oil fill sheet supplied with every unit.<\/p>\n<\/div>\n

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Material Standards<\/h3>\n

Housing: FC25 cast iron (\u2265250 MPa). Worm: 20CrMnTi (\u226558 HRC). Wheel: ZCuSn10Pb1 tin-bronze. Material certs and SGS\/BV inspection on request for port authority, marine classification, and mining sector compliance.<\/p>\n<\/div>\n<\/div>\n<\/section>\n

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Why Choose Ever-power for WPWKO Gearboxes<\/h2>\n
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\"Ever-power<\/div>\n
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We supply WPWKO hollow shaft multi-direction universal worm gearboxes to port machinery builders, crane equipment manufacturers, and marine engineering companies in France, Canada, Saudi Arabia, Australia, and over 60 countries. Our combined bore verification AND multi-position run test \u2014 checking bore precision AND confirming performance in both horizontal and vertical service \u2014 gives crane and marine customers confidence that WPWKO units will perform correctly in their actual installed configurations.<\/p>\n