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WPA Cast Iron Worm Reducer — Product Overview
O 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

| Parametre | Özellikler |
|---|---|
| Seri | Tek Hızlı |
| Konut Yapısı | Solid integral cast iron |
| Giriş Yapılandırması | Solid shaft — below or above |
| Çıkış Yapılandırması | Katı şaft, yatay |
| İndirgeme Oranı | 1/5–1/60 |
| Merkez Mesafesi | 40–250 mm |
| Montaj | Foot-mount B3/B6/B7/B8 |
| Konut Malzemesi | FC20+ gri dökme demir (GG20) |
| Sonsuz Dişli Çark Malzemesi | Kalay-bronz ZCuSn10Pb1 |
| Sonsuz Dişli Mil Malzemesi | 20CrMnTi, 55–60 HRC yüzey |
| Yağlama | N220–N320 (−30°C–40°C); N320–N460 (40°C–65°C) |
| Maksimum Yağ Sıcaklığı | 95°C sürekli |
| Ağırlık Aralığı | 4–360 kg |
| Özel Bölüm | Bilateral input shaft — motor from either side without mirrored unit |
Boyut ve Performans Verileri
| Boyut | Oran | Giriş Gücü (kW) | Çıkış Torku (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

■ ISO 9001:2000 Sertifikalı
Her bir ünite ISO 9001:2000 kalite yönetim standardına uygun olarak üretilmektedir. Hammadde denetimi, süreç içi kontroller ve son testler belgelendirilmekte ve her bir ünitenin seri numarasına kadar takip edilebilmektedir.
■ CE İşareti — AB Makine Direktifi 2006/42/EC
CE uyumluluğunun tam olması, mekanik güç aktarımı için Avrupa güvenlik ve tasarım standartlarına uyumu teyit ederek AB, İngiltere, Avustralya ve Yeni Zelanda pazarlarına ihracatı desteklemektedir.
■ Sevkiyat Öncesi Testler: Gürültü, Sızıntı, Tork
Her bir ünite sevkiyat öncesinde üç testten geçer: nominal yükte 68 dB(A)'nın altında gürültü, 30 dakikalık basınç sızıntısı testi ve nominal değerin ±5% aralığında tork iletimi. Uygun olmayan üniteler yeniden işlenir, sevk edilmez.
■ FC20+ Malzeme Sertifikasyonu
Gövde dökümleri, FC20 sınıfı için fabrika sertifikalarıyla doğrulanır: minimum 220 MPa çekme dayanımı, 160–200 HB sertlik. 135 ve üzeri boyutlarda ultrasonik kusur testi yapılır.
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
Ever Power'a uygulama gereksinimlerinizi (tork, oran, montaj ve şaft boyutları) bildirin. Mühendislik ekibimiz 24 saat içinde yanıt verecektir. OEM özel spesifikasyonları, toplu fiyatlandırma ve küresel nakliye seçenekleri mevcuttur.



