{"id":1883,"date":"2026-06-26T06:11:32","date_gmt":"2026-06-26T06:11:32","guid":{"rendered":"https:\/\/speed-reducer-gearbox.com\/product\/eda-series-motor-flange-double-worm-gear-reducer\/"},"modified":"2026-06-26T06:11:33","modified_gmt":"2026-06-26T06:11:33","slug":"eda-series-motor-flange-double-worm-gear-reducer","status":"publish","type":"product","link":"https:\/\/speed-reducer-gearbox.com\/da\/product\/eda-series-motor-flange-double-worm-gear-reducer\/","title":{"rendered":"EDA Series Motor-Flange Double Worm Gear Reducer"},"content":{"rendered":"
\n

EDA Series — Motor-Flange Double Worm Gear Reducer<\/h2>\n

The EDA Series combines the extreme ratio coverage of a double-stage worm gear train (200:1 to 900:1) with the installation simplicity of a bolt-on IEC motor flange. Where the standard EA requires a separate coupling or belt between the motor and the first-stage input, the EDA lets you mount the motor directly — saving floor space, alignment time, and a coupling maintenance item. Five frame combinations from WP40–70 through WP155–250 deliver continuous output torques up to 9,066 N·m, covering everything from fractional-horsepower lab equipment to heavy-duty dam-gate actuators. The dual self-locking worm stages hold the output shaft immovably in any position when the motor is de-energised, providing a built-in holding function that eliminates the cost and complexity of an external brake.<\/p>\n

\"EDA<\/div>\n

Practical Applications<\/h2>\n

Heavy Gate and Valve Actuators<\/h3>\n

Penstock gates on hydroelectric dams, sluice gates in water-treatment plants, and large butterfly valves in pipeline systems all demand very high torque at very low speed with absolute position-holding when the drive is off. The EDA in the WP120–175 or WP155–250 frame combination meets these demands in a single compact package. The direct motor flange simplifies the drive assembly to just two components — motor and reducer — rather than the motor-coupling-reducer chain typical of foot-mounted arrangements. Actuator OEMs including AVK, Mueller, and Rotork have integrated WP-platform double-stage worm drives into gate systems worldwide.<\/p>\n

Turntable and Indexing Drives<\/h3>\n

Industrial turntables used in rail-car positioning, CNC pallet changers, and stage-machinery revolves need to rotate large masses very slowly with precise stopping. An EDA at 400:1 or 600:1 turns a standard 1,500 r\/min motor into a 2.5–3.75 r\/min output, and the dual self-locking worm gearbox<\/strong> characteristic arrests rotation instantly when the motor stops, without coasting. This makes the EDA a reliable industrial gearbox<\/strong> solution for position-critical rotary motion.<\/p>\n

Mining Winches and Cable Drums<\/h3>\n

Underground ore-pass gates, ventilation dampers, and service winches in mining operations need a gear reducer<\/strong> that can hold a suspended load indefinitely if power is lost. The EDA provides that safety margin through passive self-locking, backed by a housing construction that tolerates the vibration, dust, and temperature swings common in underground and open-pit environments.<\/p>\n

Performance Data<\/h2>\n

Output torque figures below are measured at 1,500 r\/min input under continuous duty. The EDA uses the same dual-housing WP-platform construction as the EA, with an added B5\/B14 IEC motor flange on the first-stage input. All frame combinations share interchangeable worm wheels and bearings with the single-stage speed reducer gearbox<\/a> range.<\/p>\n

\n\n\n\n\n\n\n\n\n\n
Frame Combo<\/th>\nMotor (kW)<\/th>\nRatios<\/th>\nOutput at 200:1 (N·m)<\/th>\nOutput at 900:1 (N·m)<\/th>\n<\/tr>\n<\/thead>\n
WP40–70<\/td>\n0.12<\/td>\n200:1 – 900:1<\/td>\n63<\/td>\n177<\/td>\n<\/tr>\n
WP60–100<\/td>\n0.37<\/td>\n200:1 – 900:1<\/td>\n195<\/td>\n561<\/td>\n<\/tr>\n
WP80–135<\/td>\n1.5<\/td>\n200:1 – 900:1<\/td>\n616<\/td>\n1,811<\/td>\n<\/tr>\n
WP120–175<\/td>\n2.2 – 3<\/td>\n200:1 – 900:1<\/td>\n1,798<\/td>\n4,463<\/td>\n<\/tr>\n
WP155–250<\/td>\n5.5<\/td>\n200:1 – 900:1<\/td>\n2,841<\/td>\n9,066<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n
\"EDA<\/p>\n

Dual-housing layout and IEC flange interface<\/p>\n<\/div>\n

From Order to Dispatch<\/h2>\n

Every EDA unit moves through a structured process from initial application review to tested, packed, and shipped hardware. The steps below outline what to expect when you order from Ever-Power Australia.<\/p>\n

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

Application Review<\/h4>\n

Our engineers assess your torque, speed, and duty-cycle requirements to determine the optimal frame combination and ratio split between stages.<\/p>\n<\/div>\n

\n
2<\/div>\n

Motor Matching<\/h4>\n

We verify that your IEC motor frame, shaft diameter, and flange pattern match the EDA first-stage input bore. Custom adapters are available for non-standard motors.<\/p>\n<\/div>\n

\n
3<\/div>\n

Production & QC<\/h4>\n

Each EDA is assembled, filled with EP gear oil, and run under load on a dynamometer. Housing temperature, noise level, and output torque are recorded on the test certificate.<\/p>\n<\/div>\n

\n
4<\/div>\n

Dispatch & Support<\/h4>\n

Units ship from our NSW warehouse with mounting hardware, installation manual, and a spare set of shaft seals. Our team remains available for commissioning guidance.<\/p>\n<\/div>\n<\/div>\n

Lubrication and Thermal Considerations<\/h2>\n

Because two worm meshes operate in series, the EDA generates more heat per kW of transmitted power than a single-stage unit. For ambient temperatures up to 40 °C with intermittent duty (under six hours), ISO VG 220–320 mineral EP gear oil (Shell Omala S2 G 220 or Mobil Gears 627) is adequate. For continuous duty beyond six hours, or in enclosed machine bases with poor ventilation, switch to a synthetic ISO VG 220 lubricant such as Mobil SHC 630 to lower stabilised housing temperature by 10–20 °C. Change the oil after the first 100 running hours, then at 2,000-hour intervals or annually — whichever comes first. During each change, inspect both magnetic drain plugs for metal particles and check all shaft seals for weeping.<\/p>\n

\"Quality-controlled<\/p>\n

Final assembly and load testing of double-stage units<\/p>\n<\/div>\n

Why Ever-Power Australia<\/h2>\n

Ever-Power Transmission Australia Pty Ltd carries the EDA alongside the full EA, DA, and DK ranges from our Condell Park, NSW warehouse. ISO 9001-certified manufacturing, factory load testing, and Australian-based technical support ensure that every unit performs to specification from day one. We also supply RR528 heavy-duty worm gearboxes for metallurgy<\/a> for high-torque metallurgical and foundry drives that demand heavy-duty construction. contact us<\/a> or call +61 2 9708 3322 for pricing, lead times, and engineering assistance.<\/p>\n

Frequently Asked Questions<\/h2>\n
\n1. How does the EDA differ from the EA? +<\/span><\/summary>\n
The EA<\/strong> is foot-mounted with a bare input shaft — it requires a coupling or belt to connect the motor. The EDA<\/strong> adds a B5\/B14 IEC motor flange to the first-stage input, allowing the motor to bolt on directly. Internal gear train, torque ratings, and ratios are identical.<\/div>\n<\/details>\n
\n2. Can the EDA reach ratios beyond 900:1? +<\/span><\/summary>\n
Standard production covers 200:1 to 900:1. For extreme ratios beyond 900:1, a triple-stage (multi-stage) configuration can be engineered on request. Contact our applications team with your specific requirement.<\/div>\n<\/details>\n
\n3. What is the maximum output torque of the EDA? +<\/span><\/summary>\n
The largest frame combination (WP155–250) at 900:1 delivers 9,066 N·m<\/strong> continuous output torque at 1,500 r\/min input with a 5.5 kW motor. This is suitable for heavy gate actuators, large rotary kiln pinions, and industrial turntable drives.<\/div>\n<\/details>\n
\n4. Is synthetic oil required for the EDA? +<\/span><\/summary>\n
Not required, but strongly recommended for continuous duty above six hours. Synthetic ISO VG 220 oil (e.g. Mobil SHC 630) reduces operating temperature by 10–20 °C compared with mineral oil, extending both oil life and gear-surface life.<\/div>\n<\/details>\n
\n5. Can I use a VFD with the EDA? +<\/span><\/summary>\n
Yes. The worm gear train tolerates the full speed range of a variable-frequency drive. Maintain a minimum input speed of 300 r\/min to ensure adequate splash lubrication, and avoid sustained operation above 1,800 r\/min.<\/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>","protected":false},"excerpt":{"rendered":"

The EDA Series combines a double-stage worm gear train (ratios 200:1 to 900:1) with a bolt-on IEC motor flange for direct motor mounting, eliminating the coupling needed on the foot-mounted EA model. Five frame combinations (WP40\u201370 through WP155\u2013250) produce continuous output torque up to 9,066 N\u00b7m. Dual self-locking worm stages provide passive load holding without an external brake, making it ideal for penstock gate actuators, turntable positioning systems, and mining winch drives. The EDA is a direct replacement for Bonfiglioli VF-EP\/D series and Rossi MR-2V series motor-flange double-stage worm reducers with interchangeable flange and shaft geometry.<\/p>","protected":false},"featured_media":1780,"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-1883","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\/da\/wp-json\/wp\/v2\/product\/1883","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/speed-reducer-gearbox.com\/da\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/speed-reducer-gearbox.com\/da\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/da\/wp-json\/wp\/v2\/comments?post=1883"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/da\/wp-json\/wp\/v2\/media\/1780"}],"wp:attachment":[{"href":"https:\/\/speed-reducer-gearbox.com\/da\/wp-json\/wp\/v2\/media?parent=1883"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/da\/wp-json\/wp\/v2\/product_cat?post=1883"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/speed-reducer-gearbox.com\/da\/wp-json\/wp\/v2\/product_tag?post=1883"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}