{"id":1888,"date":"2026-06-26T06:27:59","date_gmt":"2026-06-26T06:27:59","guid":{"rendered":"https:\/\/speed-reducer-gearbox.com\/product\/ewdko-series-full-feature-double-worm-gear-reducer\/"},"modified":"2026-06-26T06:28:00","modified_gmt":"2026-06-26T06:28:00","slug":"ewdko-series-full-feature-double-worm-gear-reducer","status":"publish","type":"product","link":"https:\/\/speed-reducer-gearbox.com\/en\/product\/ewdko-series-full-feature-double-worm-gear-reducer\/","title":{"rendered":"EWDKO Series Full-Feature Double Worm Gear Reducer"},"content":{"rendered":"
\n

EWDKO Series — Full-Feature Double Worm Gear Reducer<\/h2>\n

The EWDKO is the most comprehensively equipped model in the WP double-stage worm reducer family. It combines a universal (multi-angle) first-stage housing, an IEC motor flange for direct motor mounting, a keyed hollow output shaft for coupling-free installation on the driven machine shaft, and a vertical-upward output axis — all in one unit. This full-feature configuration addresses the most demanding layout challenges in gate actuators, vertical screw drives, and overhead positioning systems where the motor angle, driven-shaft connection method, and output direction are all constrained by the surrounding structure. Five frame combinations from WP40–70 through WP155–250, with ratios from 200:1 to 900:1 and output torques up to 9,066 N·m, provide broad coverage across industrial speed reducer gearbox<\/strong> applications.<\/p>\n

\"EWDKO<\/div>\n

Applications Requiring Full Flexibility<\/h2>\n

Complex Penstock and Gate Installations<\/h3>\n

Large dam gates and flood-control structures often have motor platforms at awkward angles relative to the gate stem. The EWDKO’s universal input accommodates whatever motor angle the civil works dictate, the hollow bore slides directly over the gate-stem shaft, and the vertical output aligns naturally with the lifting axis. Dual self-locking worm gearbox<\/strong> stages hold the gate at any position without power — a critical safety requirement.<\/p>\n

Heavy Industrial Turntables<\/h3>\n

Rail-car turntables, shipyard rotating platforms, and CNC pallet-changer rings rotate massive loads at very low speeds. The EWDKO at 600:1 or 900:1 delivers the necessary torque while the hollow bore connects directly to the turntable king-pin shaft, eliminating the flexible coupling that would otherwise be a maintenance item. Frame combinations WP120–175 and WP155–250 handle the torque requirements of platforms up to 30-tonne capacity.<\/p>\n

Specifications<\/h2>\n

Torque data below applies at 1,500 r\/min input under continuous duty. The EWDKO uses the same gear pair geometry and WP-platform castings as the entire double-stage range, maintaining full parts interchangeability with the EA, EDA, EDO, EO, and EWA models. For dimensional details, contact us<\/a> with your frame combination and shaft orientation.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Frame Combo<\/th>\nMotor (kW)<\/th>\nRatios<\/th>\nTorque at 300:1 (N·m)<\/th>\nPeak Torque (N·m)<\/th>\n<\/tr>\n<\/thead>\n
WP40–70<\/td>\n0.12<\/td>\n200:1 – 900:1<\/td>\n88<\/td>\n177<\/td>\n<\/tr>\n
WP60–100<\/td>\n0.37<\/td>\n200:1 – 900:1<\/td>\n276<\/td>\n561<\/td>\n<\/tr>\n
WP80–135<\/td>\n1.5<\/td>\n200:1 – 900:1<\/td>\n880<\/td>\n1,811<\/td>\n<\/tr>\n
WP120–175<\/td>\n2.2 – 3<\/td>\n200:1 – 900:1<\/td>\n2,340<\/td>\n4,463<\/td>\n<\/tr>\n
WP155–250<\/td>\n5.5<\/td>\n200:1 – 900:1<\/td>\n4,087<\/td>\n9,066<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"EWDKO<\/p>\n

Universal input, hollow bore, and vertical output detail<\/p>\n<\/div>\n

Ordering Workflow<\/h2>\n

The EWDKO’s many configuration options mean precise specification is important. Follow the four steps below to ensure a correct first-time order.<\/p>\n

\n
\n
1<\/div>\n

Analyse the Layout<\/h4>\n

Map the motor position, driven-shaft axis, and available clearances. The EWDKO adapts to tight, angled installations that standard reducers cannot serve.<\/p>\n<\/div>\n

\n
2<\/div>\n

Size for Torque & Ratio<\/h4>\n

Calculate required output torque and speed. Select the frame combination whose rated torque exceeds the load after applying correction factors for duty cycle and ambient temperature.<\/p>\n<\/div>\n

\n
3<\/div>\n

Specify Orientation<\/h4>\n

Choose the input angle (A, S, O, X, T, or V) that best fits your motor position. Confirm the hollow-bore diameter matches the driven shaft.<\/p>\n<\/div>\n

\n
4<\/div>\n

Submit for Quote<\/h4>\n

Email the full model string and motor details to sales@speed-reducer-gearbox.com. We confirm availability and pricing within 24 hours.<\/p>\n<\/div>\n<\/div>\n

Components and Spare Parts<\/h2>\n

Every major component inside this reducer is available as an individual spare part, so a worn gear set or leaking seal never means replacing the entire unit. Our spare-parts inventory covers the full WP-platform range and ships from our Condell Park, NSW warehouse. The EWDKO draws from the same parts pool as all WP-platform reducers. First-stage components match the universal WPW range; second-stage components match the standard WP range by frame size.<\/p>\n

\n
\n
⚙<\/div>\n

Worm Shaft<\/h4>\n

Case-hardened 20CrMnTi alloy steel, thread-ground to Ra 0.8 μm finish<\/p>\n<\/div>\n

\n
⚙<\/div>\n

Worm Wheel<\/h4>\n

Centrifugally cast ZCuSn10Pb1 tin-bronze, hobbed full-depth involute profile<\/p>\n<\/div>\n

\n
⚙<\/div>\n

Bearings<\/h4>\n

Tapered roller bearings handling combined radial and axial loads on both shafts<\/p>\n<\/div>\n

\n
⚙<\/div>\n

Seal & Gasket Kit<\/h4>\n

Double-lipped NBR oil seals, housing gaskets, breather plugs, and O-rings<\/p>\n<\/div>\n<\/div>\n

\"Worm<\/p>\n

Individual components available for order: worm shaft, bronze wheel, bearings, and seal kits<\/p>\n<\/div>\n

Thermal Management<\/h2>\n

The EWDKO places the highest thermal demand of any model in the WP range because it combines double-stage heat generation with a vertical output that raises the upper bearing temperature. Synthetic ISO VG 220 gear oil is strongly recommended for all duty cycles. Ensure both housings have adequate airflow — avoid enclosing the unit in un-ventilated cabinets. Monitor housing surface temperature during commissioning; stable operation below 95 °C is acceptable. Oil changes follow a 2,000-hour or annual cycle after the initial 100-hour break-in drain.<\/p>\n

Customer Reviews<\/h2>\n
\n
\n★★★★★<\/span><\/p>\n

The EWDKO solved a layout problem we had been wrestling with for weeks. Universal input plus hollow vertical output — no other off-the-shelf reducer offered that combination. Commissioning was seamless.<\/p>\n

\n
A<\/div>\n
\n

Andrew Clarke<\/p>\n

Design Engineer, Automation Integrator<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n★★★★★<\/span><\/p>\n

We specified the WP155–250 combo for a large sluice gate. The hollow bore slid directly onto the gate stem and the universal input let us angle the motor around an existing pipe run. Excellent engineering.<\/p>\n

\n
R<\/div>\n
\n

Raj Patel<\/p>\n

Senior Engineer, Water Infrastructure<\/p>\n<\/div>\n<\/div>\n<\/div>\n

\n★★★★☆<\/span><\/p>\n

Arrived well-packed and on time. The mounting flexibility is genuinely useful — we repositioned the motor once during install without needing a new gearbox. Would order again.<\/p>\n

\n
T<\/div>\n
\n

Tom Brennan<\/p>\n

Workshop Foreman, Regional Council<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

Partner with Ever-Power Australia<\/h2>\n

Ever-Power Transmission Australia Pty Ltd supplies the EWDKO and every other WP-platform variant from our Condell Park, NSW warehouse. We also carry VRV063 worm gearbox for printing equipment<\/a> for precision printing and web-tension applications. ISO 9001-certified, factory-tested, and supported by our Sydney engineering team. Call +61 2 9708 3322 or visit our About Us<\/a> page.<\/p>\n

\"Ever-Power<\/p>\n

Run-in testing and dimensional verification<\/p>\n<\/div>\n

Frequently Asked Questions<\/h2>\n
\n1. What do all the letters in EWDKO stand for? +<\/span><\/summary>\n
E<\/strong> = double stage, W<\/strong> = universal (multi-angle) first stage, D<\/strong> = IEC motor flange, K<\/strong> = hollow output shaft, O<\/strong> = output pointing upward. It is the most feature-rich variant in the WP double-stage range.<\/div>\n<\/details>\n
\n2. Is the hollow bore the same size as single-stage DKA\/DKS models? +<\/span><\/summary>\n
Yes. The second-stage output bore matches the standard WP hollow-shaft diameter for each frame size, so the same torque arm and mounting hardware used on single-stage hollow-shaft models will fit.<\/div>\n<\/details>\n
\n3. Can I mount the motor at an angle other than horizontal? +<\/span><\/summary>\n
Yes. The universal first stage supports six input orientations<\/strong> (A, S, O, X, T, V), so the motor can enter from below, above, either side, or at vertical-up or vertical-down angles.<\/div>\n<\/details>\n
\n4. What lubrication is recommended? +<\/span><\/summary>\n
Synthetic ISO VG 220 EP gear oil is strongly recommended for the EWDKO because both the double-stage heat generation and the vertical output orientation place higher thermal demands on the lubricant. Shell Omala S4 GX 220 and Mobil SHC 630 are proven choices.<\/div>\n<\/details>\n
\n5. Is the EWDKO available in custom ratios? +<\/span><\/summary>\n
Standard ratios run from 200:1 to 900:1. Custom intermediate ratios can be achieved by pairing non-standard first- and second-stage gear sets. Contact our engineering team with your specific requirement.<\/div>\n<\/details>\n
\n

Ready to Get Started?<\/p>\n

Call +61 2 9708 3322<\/strong>  |  Email sales@speed-reducer-gearbox.com<\/strong><\/p>\n

Request a Quote<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

The EWDKO is the most feature-rich variant in the WP double-stage range: universal multi-angle input, IEC motor flange, keyed hollow output shaft, and vertical-upward output axis in one compact assembly. Ratios from 200:1 to 900:1 and output torque up to 9,066 N\u00b7m. Dual self-locking stages for passive load holding. Designed for complex gate-actuator and turntable installations. Replaces Bonfiglioli VF-WKP\/EP and Sew-Eurodrive SA..DRE series full-feature double worm reducers with matching hollow-bore and flange interfaces.<\/p>\n","protected":false},"featured_media":1785,"comment_status":"open","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[2900],"product_tag":[],"class_list":["post-1888","product","type-product","status-publish","has-post-thumbnail","product_cat-double-worm-gear-reducer","first","instock","shipping-taxable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/product\/1888","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/comments?post=1888"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/media\/1785"}],"wp:attachment":[{"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/media?parent=1888"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/product_cat?post=1888"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/en\/wp-json\/wp\/v2\/product_tag?post=1888"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}