Deskripsi
WPA Cast Iron Worm Reducer — Product Overview
The 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

| Parameter | Spesifikasi |
|---|---|
| Seri | Kecepatan Tunggal |
| Struktur Perumahan | Besi cor integral padat |
| Konfigurasi Masukan | Solid shaft — below or above |
| Konfigurasi Keluaran | Poros padat, horizontal |
| Rasio Pengurangan | 1/5–1/60 |
| Jarak Pusat | 40–250 mm |
| Pemasangan | Foot-mount B3/B6/B7/B8 |
| Bahan Perumahan | Besi cor abu-abu FC20+ (GG20) |
| Bahan Roda Cacing | Perunggu timah ZCuSn10Pb1 |
| Bahan Poros Cacing | 20CrMnTi, permukaan 55–60 HRC |
| Pelumasan | N220–N320 (−30°C–40°C); N320–N460 (40°C–65°C) |
| Suhu Oli Maksimum | 95°C terus menerus |
| Rentang Berat | 4–360 kg |
| Fitur Khusus | Bilateral input shaft — motor from either side without mirrored unit |
Data Ukuran & Kinerja
| Ukuran | Perbandingan | Daya Masukan (kW) | Torsi Keluaran (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

■ Bersertifikasi ISO 9001:2000
Setiap unit diproduksi di bawah manajemen mutu ISO 9001:2000. Inspeksi bahan baku, pemeriksaan selama proses produksi, dan pengujian akhir semuanya didokumentasikan dan dapat dilacak ke nomor seri setiap unit.
■ Tanda CE — Arahan Mesin Uni Eropa 2006/42/EC
Kepatuhan CE penuh menegaskan kepatuhan terhadap standar keselamatan dan desain Eropa untuk transmisi daya mekanik, mendukung ekspor ke pasar Uni Eropa, Inggris, Australia, dan Selandia Baru.
■ Pengujian Pra-Pengiriman: Kebisingan, Kebocoran, Torsi
Setiap unit melewati tiga pengujian sebelum dikirim: kebisingan di bawah 68 dB(A) pada beban nominal, uji kebocoran tekanan selama 30 menit, dan transmisi torsi dalam ±5% dari nilai nominal. Unit yang tidak sesuai akan diperbaiki — tidak dikirim.
■ Sertifikasi Material FC20+
Pengecoran rumah komponen diverifikasi dengan sertifikat pabrik untuk kelas FC20: kekuatan tarik minimum 220 MPa, kekerasan 160–200 HB. Pengujian cacat ultrasonik dilakukan pada ukuran 135 ke atas.
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
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