Description
WPA Cast Iron Worm Reducer — Product Overview
Le WPA is the benchmark foot-mount worm reducer in the WP series, chosen where engineers need a rugged, standard-dimension drive unit that installs directly into existing conveyor frames, agricultural machinery, and industrial processing equipment. The FC20+ grey cast iron housing delivers inherent vibration damping under sustained loads up to 2,371 Nm, supporting 50,000+ hour service life across continuous-duty applications.
Its defining feature — a bilateral input shaft — accepts motor connection from either side without ordering a mirrored unit, eliminating adaptor brackets and simplifying installation on compact machine frames. 12 standard sizes from 40–250 mm centre distance cover 0.12–33.20 kW input power across the full range of standard motor frames.
WPA Worm Reducer Specifications
| Paramètre | Spécification |
|---|---|
| Série | Vitesse unique |
| Structure du logement | Solid integral cast iron |
| Configuration d'entrée | Solid shaft — below or above |
| Configuration de sortie | Arbre massif, horizontal |
| Taux de réduction | 1/5–1/60 |
| Distance du centre | 40–250 mm |
| Montage | Foot-mount B3/B6/B7/B8 |
| Matériau du boîtier | FC20+ fonte grise (GG20) |
| Matériau de roue à vis sans fin | Bronze à l'étain ZCuSn10Pb1 |
| Matériau de la tige de vis sans fin | 20CrMnTi, surface de 55 à 60 HRC |
| Lubrification | N220–N320 (−30 °C–40 °C) ; N320–N460 (40 °C–65 °C) |
| Température maximale de l'huile | 95 °C en continu |
| Plage de poids | 4–360 kg |
| Fonctionnalité spéciale | Bilateral input shaft — motor from either side without mirrored unit |
Données sur la taille et les performances
| Taille | Rapport | Puissance absorbée (kW) | Couple de sortie (Nm) | A (mm) | AB (mm) | B (mm) | BB (mm) | Oil (L) |
|---|---|---|---|---|---|---|---|---|
| 40 | 1/5–1/60 | 0.48–0.12 | 17–26 | 143 | 87 | 114 | 74 | 0.13–0.30 |
| 50 | 1/5–1/60 | 0.80–0.20 | 28–43 | 175 | 108 | 150 | 97 | 0.17–0.45 |
| 60 | 1/5–1/60 | 1.25–0.32 | 45–70 | 198 | 120 | 168 | 112 | 0.22–0.55 |
| 70 | 1/5–1/60 | 1.95–0.52 | 70–113 | 231 | 140 | 194 | 131 | 0.60–0.80 |
| 80 | 1/5–1/60 | 2.65–0.75 | 95–163 | 261 | 160 | 214 | 142 | 0.85–1.10 |
| 100 | 1/5–1/60 | 4.45–1.00 | 170–229 | 322 | 190 | 254 | 169 | 1.50–2.90 |
| 120 | 1/5–1/60 | 6.15–1.50 | 242–355 | 371 | 219 | 282 | 190 | 3.20–4.40 |
| 135 | 1/5–1/60 | 11.25–2.30 | 460–562 | 422 | 249 | 317 | 210 | 3.60–6.20 |
| 155 | 1/5–1/60 | 14.50–3.00 | 655–791 | 497 | 295 | 382 | 252 | 3.70–6.50 |
| 175 | 1/5–1/60 | 21.50–4.07 | 823–1078 | 534 | 314 | 388 | 255 | 4.60–8.00 |
| 200 | 1/5–1/60 | 22.60–5.58 | 1280–1449 | 580 | 342 | 456 | 319 | 6.50–9.30 |
| 250 | 1/5–1/60 | 33.20–8.62 | 1881–2371 | 703 | 420 | 552 | 385 | 9.00–18.0 |
WPA Worm Reducer — Core Features
■ FC20+ Cast Iron — 3× Vibration Damping vs Aluminium
Precision-machined FC20+ grey cast iron absorbs shock loads that would fatigue aluminium housings, extending bearing life in conveyor and agricultural applications with high-vibration duty cycles.
■ Bilateral Input Shaft — Motor from Either Side
Both ends of the worm shaft are accessible on every WPA, allowing left- or right-hand motor connection without a mirrored unit. Reduces installation time and eliminates custom bracket fabrication on confined machine frames.
■ 12 Sizes: 17 Nm to 2,371 Nm Output Torque
From compact 40 mm units at 17–26 Nm to heavy-duty 250 mm units at 1,881–2,371 Nm, a single WPA series covers the entire range of standard conveyor, pump, and agricultural drive requirements.
■ Four Mounting Orientations Without Hardware Changes
B3 horizontal, B6 output-up, B7 output-down, and B8 reverse — all supported without modification. Adjust oil quantity per orientation per the lubrication chart.
■ 20CrMnTi Worm Shaft at 55–60 HRC
The carburised, precision-ground worm shaft maintains mesh geometry over 50,000+ hours. Noise level remains below 68 dB(A) at rated load across the full 1/5–1/60 ratio range.
■ Oil Gauge + Drain Plug Standard
Every WPA includes an oil level sight glass and bottom drain plug as standard. First oil change at 100 hours (run-in), then every 2,500 hours — a 15-minute task requiring no specialist tools.
WPA Worm Reducer — Industry Applications
⚊ Grain Auger & Conveyor Drives
The WPA foot-mount base installs directly into standard conveyor frame bolt patterns. Sizes 100–135 at 1/20–1/40 ratios are the standard choice for grain auger drives, where 24/7 harvest-season operation demands cast iron durability over lighter alternatives.
☷ Agricultural Machinery
Powers seed drills, slurry spreaders, and irrigation pump drives. The bilateral input shaft allows motor positioning on either machine side without custom brackets — reducing OEM build time per machine.
⚒ Packaging & Bottling Lines
WPA-60 to WPA-100 deliver precise speed reduction for carton formers, labelling conveyors, and palletiser turntables. Operation below 68 dB(A) meets food factory noise floor requirements.
⚙ Pump & Fan Drives
Continuous 95°C oil temperature rating suits pump station and HVAC fan applications where full-load operation is continuous rather than intermittent.
Ever Power Manufacturing Quality — WPA Worm Reducer
■ Certifié ISO 9001:2000
Chaque unité est fabriquée selon la norme de gestion de la qualité ISO 9001:2000. L'inspection des matières premières, les contrôles en cours de production et les tests finaux sont tous documentés et traçables grâce au numéro de série de chaque unité.
Marquage CE — Directive européenne 2006/42/CE relative aux machines
La conformité totale aux normes CE confirme le respect des normes européennes de sécurité et de conception pour la transmission de puissance mécanique, favorisant ainsi l'exportation vers les marchés de l'UE, du Royaume-Uni, de l'Australie et de la Nouvelle-Zélande.
■ Tests avant expédition : bruit, fuite, couple
Chaque unité subit trois tests avant expédition : niveau sonore inférieur à 68 dB(A) à charge nominale, test d’étanchéité sous pression de 30 minutes et transmission du couple à ±5% de la valeur nominale. Les unités non conformes sont remises en état et ne sont pas expédiées.
■ Certification des matériaux FC20+
Les pièces moulées des carters sont vérifiées par des certificats d'usine pour la nuance FC20 : résistance à la traction minimale de 220 MPa, dureté de 160 à 200 HB. Un contrôle par ultrasons des défauts est effectué sur les pièces de taille 135 et supérieure.
WPA Worm Reducer — Customer Reviews
“WPA-100 running on our grain auger drives for 18 months — zero failures across 12 units in a dusty, high-vibration environment. The cast iron housing handles impacts that would crack aluminium.”
“Replaced worn units with WPA-80 on our packaging conveyor. Noise dropped from 74 dB to under 68 dB. Bilateral shaft meant no motor rewiring — saved two hours per unit during the changeover.”
“WPA-135 on our irrigation pump at 24/7 for over 14,000 hours with no leaks. The oil gauge boss makes monthly level checks a 30-second task.”
“Good performance on our bottling line. WPA-60 runs quietly in B6 vertical mount on a compact frame. Would appreciate more sizes between 135 and 155 mm.”
Frequently Asked Questions — WPA Worm Reducer
Get Your WPA Quote Today
Indiquez à Ever Power les exigences de votre application : couple, rapport de réduction, montage et dimensions de l’arbre. Réponse de nos ingénieurs sous 24 h. Spécifications personnalisées pour les fabricants d’équipement d’origine (OEM), tarifs dégressifs et livraison internationale disponibles.
