Mô tả
WPDZ Flange-Mounted Vertical Output Single Speed Worm Gear Reducer
Vertical pump and agitator drives present a fundamental challenge: translating horizontal motor rotation into vertical shaft output cleanly, compactly, and reliably. Traditional solutions bolt a bevel gearbox onto a standard reducer, adding weight, alignment complexity, and an extra failure point. The WPDZ vertical output worm reducer eliminates that compromise entirely — the motor mounts directly to the input flange face while the output shaft exits vertically, delivering torque straight down to pump impellers, agitator blades, or mixing paddles in a single rigid unit. Designed for pump stations, mixing vessels, and fermentation tanks where vertical drives are a spatial necessity, not an engineering afterthought.
Technical Specifications
All critical dimensions for the WPDZ including motor flange (LB, LC, LA, LG, LZ), input bore, and vertical output shaft are shown in the drawing below.
| Size | Input Power (kW) | Ratio | AB (mm) | LL (mm) | B (mm) | BB (mm) | CC (mm) | F (mm) | Output LS×S×W×Y | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 50 | 0.18 | 1/5–1/60 | 88 | 77 | 97 | 50 | 53 | 77 | 40×17×5×3 | 8 |
| 60 | 0.18–0.37 | 1/5–1/60 | 80 | 82 | 112 | 60 | 68 | 92 | 50×22×7×4 | 12.5 |
| 70 | 0.37–0.75 | 1/5–1/60 | 100 | 95 | 131 | 70 | 75 | 115 | 60×28×7×4 | 16 |
| 80 | 0.75–1.5 | 1/5–1/60 | 120 | 100 | 142 | 80 | 96 | 144 | 65×32×10×4.5 | 23 |
| 100 | 1.5 | 1/5–1/60 | 150 | 135 | 169 | 100 | 100 | 150 | 75×38×10×4.5 | 38 |
| 120 | 2.2–3.0 | 1/5–1/60 | 165 | 160 | 190 | 120 | 120 | 180 | 85×45×12×4.5 | 60 |
| 135 | 3.0–4.0 | 1/5–1/60 | 185 | 170 | 210 | 135 | 130 | 200 | 95×55×16×6 | 80 |
ⓘ Input speed: 1500 r/min. Max output torque: 690 N·m (size 135, ratio 1/60). Motor flange: IEC B5/B14 standard.
Product Structure — Vertical Drive Architecture
The WPDZ achieves its 90° direction change through a precision-matched worm-and-wheel gear pair oriented so the output shaft exits perpendicular to the input axis — and, crucially, vertically. This places the output shaft pointing downward (or upward, per shaft direction configuration) with no additional angle drive required. The motor flange input accepts IEC standard B5 or B14 face motors directly, creating a rigid monolithic motor-reducer unit that is mounted on the tank cover, reactor lid, or pump head mounting plate.
Key structural highlights:
- FC25 cast iron housing — machined on all mating surfaces for gasket-free leak protection
- 20CrMnTi alloy steel worm, case-hardened HRC58–62, precision ground profile
- ZCuSn10Pb1 phosphor-bronze worm wheel — superior to aluminium-bronze in corrosive environments
- Tapered roller bearings on vertical output shaft — handles axial pump thrust loads
- Top-mounted breather cap and bottom-accessible drain plug optimised for vertical installation
Key Features & Benefits
True Vertical Output — No Extra Gearbox
Output shaft exits vertically from the WPDZ housing. Eliminates the need for a secondary bevel or spiral-bevel gearbox in pump-top drive configurations, reducing cost and footprint.
Axial Thrust Load Handling
Tapered roller bearings on the vertical output shaft handle the axial thrust generated by centrifugal pump impellers and agitator blades — loads that would destroy angular contact ball bearings in ordinary reducers.
Three Shaft Direction Options (A–C)
Motor input orientation can be configured with the output shaft pointing downward or upward, accommodating both submerged agitator designs and top-entry mixing configurations.
Compact Frame — Large Tanks Fit More
Sizes 50–135 cover the power range most commonly used on process vessels (0.18–4 kW). The small AB dimension (88–185 mm) minimises tank lid penetration area, preserving vessel structural integrity.
Industry Applications
The WPDZ is the standard choice for vertical worm drive pump and mixer applications across process industries where horizontal motor + vertical shaft is required in one unit.
Vertical Pumps
Top-drive vertical centrifugal pumps in water treatment, irrigation, and chemical dosing stations. WPDZ provides the compact motor-to-impeller drive without a separate bevel unit.
Fermentation Tanks
Brewery, pharmaceutical, and bioethanol fermentation vessels require gentle top-mounted agitation. WPDZ fits through the lid flange; its low output speed prevents foam formation.
Mixing Kettles & Reactors
Chemical and paint mixing kettles with top-entry agitators. The WPDZ ratio range gives fine speed control over blend uniformity while keeping the motor in a horizontal, protected position.
Wastewater Aeration
Vertical surface aerators and submersible mixer supports in wastewater treatment plants. The sealed cast iron housing resists hydrogen sulfide and corrosive water vapour environments.
Quality Control & Standards
🔹 ISO 9001:2015 — Certified quality management covering all production stages from casting to final packaging.
🔹 CE Conformity — Declaration available for European market projects and machinery integrators.
🔹 Axial Load Test — Each WPDZ unit is subjected to axial thrust test at rated vertical load before dispatch — critical for pump application confidence.
🔹 Bronze Wheel Certificate — ZCuSn10Pb1 composition verified by spectrometer analysis on each batch. Tin content 9–11% confirmed for optimal wear resistance.
Why Engineers Choose Ever-power WPDZ
📋 Process Industry Expertise
We supply WPDZ reducers to pharmaceutical, biotech, and chemical plant integrators across Europe and Asia. Our technical team understands vessel safety, IP ratings, and sterile-environment constraints.
🔧 Output Shaft Custom Machining
We can machine special keyways, splines, or stub shaft extensions to suit your specific agitator shaft coupling. No third-party machining required.
🌐 Global References
We export WPDZ units to pump manufacturers in Australia, wastewater plant constructors in the Middle East, and chemical plant builders in Europe. Shipping documentation and test certificates provided.
📈 Engineering Selection Support
Send us your torque, speed, and environmental requirements. We will calculate the correct size using our T=T₁×a₁×a₂ selection method and recommend the optimal ratio. Free of charge, no obligation.
Customer Testimonials
“We installed 18 WPDZ size 80 units on our pump-top drives in a water treatment plant. Two years of continuous service, zero leaks, and the output shaft dimensions were spot-on for our impeller couplings.”
🇦🇺 David P. — Pump Systems Engineer, Brisbane, Australia
“WPDZ 100 fitted our fermentation tank agitator drive perfectly. We needed low RPM output — ratio 1/50 gave us exactly 30 RPM from a 4-pole motor. Smooth, quiet, no vibration to the vessel.”
🇩🇪 Hans G. — Brewing Equipment Manufacturer, Munich, Germany
“Good quality for the price. We use WPDZ 70 on small mixer kettles in a paint factory. A few units have been running for 18 months on 2-shift duty. One unit needed seal replacement at 14 months — Ever-power dispatched the part within 3 days.”
🇵🇱 Rafael S. — Maintenance Engineer, Warsaw, Poland
“Our chemical dosing station required a compact vertical drive rated for aggressive vapour. WPDZ 60 with synthetic oil and upgraded lip seals passed our 6-month field trial with no degradation.”
🇮🇱 Aditya M. — Process Engineer, Chennai, India
Frequently Asked Questions
Can the WPDZ handle the axial thrust from a centrifugal pump impeller?
Yes. The vertical output shaft is supported by pre-loaded tapered roller bearings specifically selected for combined radial and axial load capacity. Check the cantilever load table in the product datasheet; for heavy impellers, size up or contact us for a bearing-load calculation.
Does the WPDZ require any special lubrication for vertical mounting?
When mounted with the output shaft pointing downward (shaft-down config), the oil level must be topped up to a higher reference point than horizontal mounting. Use the shaft-direction oil-fill diagram on the nameplate. Recommended oil: ISO VG 220–320 for normal ambient, ISO VG 320–460 for hot environments.
Is the WPDZ available in sizes larger than 135?
The standard WPDZ series covers sizes 50–135. For higher torque vertical drive requirements (above 690 N·m), consider our WPO or WPDO series with vertical output options, or contact our engineering team for a custom specification.
What motor mounting standard does the WPDZ accept?
Standard input accepts IEC B5 (round flange) and B14 (square flange) motors. Motor flange dimensions (LB, LC, LA, LG, LZ) are tabulated in the specification sheet. NEMA frame adaptors are available on request for North American projects.
How do I select the correct ratio for an agitator application?
Calculate the required output torque T = F × r (impeller force × radius), correct for operating conditions using the a₁ (temperature) and a₂ (shock load) coefficients, then use the formula P = T×n₂ / (9550×n) to find required input power. Match to the closest size/ratio combination in our torque table. Our team can do this calculation for you — just send us the agitator spec sheet.
Simplify Your Vertical Drive — Talk to Our Engineers
The WPDZ eliminates the need for a secondary angle gearbox in vertical pump and agitator designs. Let us help you select the right size. About Ever-power | Contact our team | Email: [email protected]
