Опис
WPDKZ Flange-Mounted Hollow Shaft Vertical Output Single Speed Worm Gear Reducer
Filling lines, vertical mixers, and spiral powder conveyors share a drive problem that standard gearboxes cannot solve cleanly: the driven shaft must be vertical, it must pass through the equipment frame without a coupling, and the motor must attach without alignment adjustment. The WPDKZ hollow shaft vertical worm reducer delivers all four requirements in a single machined cast iron unit. The hollow bore slides directly onto the vertical screw or mixer shaft; the flange face accepts the motor directly; the output exits vertically — all in a footprint smaller than a traditional motor-coupler-gearbox-bevel chain. Designed for filling equipment, standing mixers, and dry powder screw conveyors where vertical integrated drives are the only practical choice.
Technical Specifications
The WPDKZ dimension drawing below shows all critical measurements — AB (height), LL (width), hollow bore (S×W×Y), motor flange pattern, and input bore dimensions.
| Size | Input Power (kW) | Ratio | AB (mm) | B (mm) | CC (mm) | LL (mm) | F (mm) | Hollow Bore S×W×Y | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|
| 50 | 0.18 | 1/5–1/60 | 88 | 105 | 50 | 77 | 77 | 20×6×22.8 | 8 |
| 60 | 0.18–0.37 | 1/5–1/60 | 80 | 110 | 60 | 82 | 92 | 25×8×28.3 | 12.5 |
| 70 | 0.37–0.75 | 1/5–1/60 | 100 | 130 | 70 | 95 | 115 | 30×8×33.3 | 16 |
| 80 | 0.75–1.5 | 1/5–1/60 | 120 | 150 | 80 | 100 | 144 | 35×10×38.3 | 23 |
| 100 | 1.5 | 1/5–1/60 | 150 | 160 | 100 | 135 | 155 | 40×12×43.3 | 38 |
| 120 | 2.2–3.0 | 1/5–1/60 | 165 | 175 | 120 | 160 | 180 | 45×14×48.8 | 60 |
| 135 | 3.0–4.0 | 1/5–1/60 | 185 | 210 | 135 | 170 | 200 | 60×18×64.4 | 80 |
ⓘ Input shaft speed: 1500 r/min. Maximum output torque: 690 N·m (size 135, ratio 1/60). Motor flange: IEC B5/B14.
Product Structure — Four-in-One Drive Architecture
The WPDKZ is the most functionally integrated unit in the WP series. It combines what would otherwise require four separate components into a single machined housing:
- IEC/NEMA Motor Flange Input — B5/B14 standard bolt pattern for zero-coupling direct motor mounting
- Worm-and-Wheel Speed Reduction — 20CrMnTi case-hardened steel worm, ZCuSn10Pb1 bronze wheel, ratios 1/5–1/60
- Vertical Output Direction — 90° axis change built into the housing geometry, output shaft points vertically up or down
- Hollow Bore Output — Shaft slides directly onto the equipment screw or agitator shaft without coupling hardware
The entire assembly is contained in an FC25 cast iron housing machined to H6/h6 tolerances on all mating surfaces. Dual-lip seals on both input and output protect against lubricant loss in any orientation. A vent plug at the top and drain at the bottom are positioned for vertical installation accessibility.
Key Features & Competitive Advantages
Vertical Hollow Shaft — Unique Integration
No other standard single-stage worm reducer combines flange input, hollow bore, AND vertical output. The WPDKZ eliminates the need for a separate bevel gearbox AND a coupling shaft, delivering 30–40% drivetrain length reduction on vertical equipment.
Filling Machine Precision
Low backlash precision worm gear pair ensures consistent dosing accuracy in liquid and powder filling machines. The self-locking characteristic at high ratios (≥1/25) prevents backdriving — essential when fill lines stop mid-cycle.
Rugged Cast Iron Housing
FC25 gray cast iron provides 250 MPa tensile strength, excellent vibration damping, and superior heat dissipation. Filling lines and mixer vibrations are absorbed rather than amplified — extending gear and bearing life significantly.
Streamlined Maintenance
With no coupling to check, no shaft alignment to verify, and a single oil fill point, routine maintenance is reduced to oil changes and seal inspection. Planned maintenance intervals of 2500 hours keep production lines running.
Industry Applications
The WPDKZ is the definitive compact vertical hollow shaft worm drive solution for filling and mixing OEMs requiring the smallest possible motor-to-driven-shaft drivetrain.
Manufacturing Quality & Certifications
| Quality Item | Standard / Detail |
|---|---|
| ✅ Quality System | ISO 9001:2015 — covers casting, machining, assembly, final test, and packaging |
| ✅ Market Certification | CE Declaration of Conformity (EU Machinery Directive 2006/42/EC) |
| ✅ Housing Material | FC25 gray cast iron — Tensile strength ≥250 MPa, Brinell hardness HB170–240 (MTR on request) |
| ✅ Worm Shaft | 20CrMnTi alloy steel, carburized and hardened HRC58–62, ground worm profile DIN 3996 |
| ✅ Worm Wheel | ZCuSn10Pb1 phosphor-bronze — spectrometer-verified tin content 9–11% |
| ✅ Pre-Shipment Test | 100% run-in test: noise (≤72 dB), oil leak check, output torque verification, hollow bore dimensional check |
Why Leading Filling Machine OEMs Choose Ever-power
🏗 Purpose-Built Tooling for WPDKZ
We hold dedicated casting tooling for the WPDKZ housing, maintaining sub-millimetre dimensional consistency across production batches. Critical for OEMs who need drop-in-compatible units across multiple production lines.
📈 20+ Years Filling Industry Supply
We have supplied WPDKZ reducers to filling machine manufacturers in China, Europe, and Southeast Asia since 2003. Our engineering team understands filling machine torque profiles and dosing accuracy requirements.
🔧 Custom Hollow Bore & Keyway
Standard hollow bores machined to H7 tolerance. We offer custom bores, special keyway orientations, and shrink-disc interfaces for OEM series. Custom flange patterns on motor input side also available.
🚚 Reliable Global Logistics
We export to 60+ countries including Australia, Germany, India, and the UAE. Sea, air, and express courier delivery options. All orders include commercial invoice, packing list, and test certificates.
Verified Customer Reviews
“We equip all our liquid filling machines with WPDKZ size 70 and 80. The hollow bore and vertical output make assembly much cleaner than the old bevel-plus-coupling design. 3 years of OEM use — zero field returns.”
🇬🇧 Graham H. — R&D Director, Filling Equipment Manufacturer, Melbourne, Australia
“WPDKZ 100 is the heart of our vertical auger filler. The self-locking at ratio 1/40 eliminates the brake solenoid we used before — saving cost and one potential failure mode per machine.”
🇺🇸 Tyler M. — Mechanical Engineer, Packaging OEM, Salt Lake City, USA
“We used WPDKZ 60 on small spice filling machines. Good quality and the dimensions matched our shaft perfectly. Delivery was fast — 12 days to Germany. Would recommend for compact filling OEM projects.”
🇩🇪 Lukas B. — Mechanical Designer, Food Packaging, Hamburg, Germany
“Designed a new bakery stand mixer with WPDKZ 80. The vertical hollow shaft dropped straight onto our mixing hook shaft — clean, rigid, no coupling. The whole drivetrain is 45 mm shorter than our previous design.”
🇮🇬 Ravi K. — Product Designer, Bakery Equipment OEM, Pune, India
Frequently Asked Questions
What is the difference between WPDKZ and WPDZ?
Both have flange input and vertical output. The WPDZ has a solid output shaft, while the WPDKZ has a hollow bore output. Use WPDZ when your driven shaft has a protruding end and you need a coupling; use WPDKZ when you want the driven shaft to pass through the gearbox bore — eliminating the coupling entirely for a more compact, rigid drivetrain.
Is the WPDKZ self-locking at rest?
Worm gears are self-locking when the lead angle is less than the friction angle. At ratios ≥1/25, the WPDKZ is effectively self-locking under static load, which prevents gravity-driven backdriving in vertical installations. For safety-critical hold applications, confirm with our engineering team for your specific load and ratio combination.
What hollow bore diameters are available for WPDKZ?
Standard hollow bore diameters (S) are: size 50 → 20 mm, size 60 → 25 mm, size 70 → 30 mm, size 80 → 35 mm, size 100 → 40 mm, size 120 → 45 mm, size 135 → 60 mm. Custom bores can be machined on request for OEM orders of 5+ units.
How do I fix the WPDKZ to the machine frame?
The WPDKZ foot mounting uses 4-Z bolt holes in the base flange (dimensions per size in the drawing). For tank-top mounting, the foot flange is bolted to the vessel cover plate. An anti-rotation torque arm is recommended for sizes ≥80 to prevent housing rotation when the driven shaft experiences torque spikes.
Can I use a VFD with the WPDKZ?
Yes. WPDKZ is fully compatible with variable frequency drive (VFD/inverter) controlled motors. When using a VFD at low speeds (below 600 r/min input), ensure adequate motor cooling (use a motor with forced-air cooling fan if running extended periods below 30 Hz). The gearbox itself does not require modification for VFD use.
Ready to Simplify Your Vertical Drive Design?
Send us your shaft diameter, required output speed, torque, and mounting arrangement. We will confirm the correct WPDKZ size, provide a dimensional drawing, and issue a competitive quote — usually within 24 hours. Visit Ever-power About Us to learn more or contact our team directly.
