WPEKA ダブルスピード鋳鉄製ウォーム減速機 — WPシリーズ

単段ウォーム減速機は最大1/60の減速比を実現します。1/200、1/500、または1/900の減速比が要求される用途（ソーラートラッカー、バルブアクチュエータ、低速コンベア、位置決め駆動装置など）では、2段目のウォーム減速機が技術的な解決策となります。 WPEKA 2つのマッチングされたウォームギアを単一の鋳鉄製ハウジング内に直列に配置し、中間軸、ステージ間の外部カップリング、追加の取り付けフレームを必要とせず、コンパクトな脚部取り付けユニットで1/200から1/900を超える減速比を実現します。

The WPEKA combines the two-stage extreme ratio capability with the zero-coupling hollow bore output. The driven shaft in… The dual-stage architecture uses matched tin-bronze worm wheels and 20CrMnTi worm shafts at both stages, providing consistent mesh quality and noise performance across the full ultra-high ratio range.

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■ K-Type Hollow Bore — Direct Shaft Mount at Ultra-High Ratio

The WPEKA combines the two-stage extreme ratio capability with the zero-coupling hollow bore output. The driven shaft inserts directly into the K-bore — no output coupling required even at 1/900+ ratios with 6,050 Nm output torque.

■ Shaft-Mount Configuration Available — Torque Arm Restraint

The hollow bore enables shaft-mounting the WPEKA directly onto the driven equipment shaft with a torque arm reaction bracket — the same installation method as the WPKA, but with access to ratios up to 1/900+.

■ Same 6,050 Nm Output Torque as WPEA — K-Bore Does Not Reduce Capacity

The K-type hollow bore substitution does not change the worm gear internals or torque ratings. WPEKA size 155–250 delivers identical 6,050 Nm to the WPEA at the same ratio.

■ Two-Stage Precision — Matched Worm Wheel Pairs Both Stages

Both worm wheel stages use precision-matched ZCuSn10Pb1 tin-bronze pairs, providing consistent inter-stage mesh quality. The dual-stage reduction noise level remains within the 68 dB(A) rated load limit.

■ 両側A型入力 - 標準モーターカップリング

A-type solid input shaft accepts motor connections from either side via standard couplings. No motor adaptor required — WPEKA uses the same motor hardware as a standard WPA.

■ Foot-Mount or Shaft-Mount — Two Installation Modes

The WPEKA foot-mount base and torque arm boss are both present in the same housing. Use foot-mount for frame-mounted installation or shaft-mount directly onto the driven shaft — no modification required.

☀ Solar Tracker Shaft-Mount Drives

WPEKA shaft-mount configuration simplifies solar tracker structural design — the dual-stage reducer mounts directly on the tracker rotation shaft without a separate mounting frame, eliminating the frame and coupling between reducer and shaft.

⚙ Slow-Speed Conveyor Head Shaft Drives

For slow-speed conveyors with a keyed head shaft, WPEKA provides ultra-high ratio reduction plus direct shaft mounting — achieving output speeds below 5 rpm from a standard motor without VFD controls or external coupling hardware.

⚒ Large Valve Actuator Shaft Drives

WPEKA K-bore mounts directly on valve stem shafts for large valve actuator applications requiring ratios above 1/200. No coupling at the valve stem eliminates the external hardware most vulnerable to corrosion in outdoor installations.

⚊ Turntable & Indexing Platform Drives

The WPEKA hollow bore accommodates the central pivot shaft of large turntable and indexing platform drives, where extreme ratio reduction from a standard motor and direct shaft connection both simplify the mechanism.

■ ISO 9001:2000認証取得済み — 二段階組立

WPEの二段変速ユニットはすべて、ウォーム段組立段階の両方においてISO 9001:2000品質管理基準に準拠しています。最終組立前に、段間アライメントと複合減速比の精度が検証されます。

■ CEマーキング — EU機械指令2006/42/EC

機械式動力伝達機器のCEマーク完全準拠は、再認証なしでEU、英国、オーストラリア、ニュージーランド市場への輸出を可能にします。

■ 出荷前テスト：騒音、漏れ、トルク

定格負荷時の騒音は68dB(A)以下、両ギア室の30分間加圧漏れ試験に合格、出力トルクは定格値の±5%以内。不適合品は出荷前に再加工。

■ FC20+ 材料認証 — 両方のハウジング

一次および二次ウォームハウジングは、FC20ミル証明書によって検証されています。最低引張強度は220MPa、硬度は160～200HBです。サイズ組み合わせ135～200以上については、超音波欠陥検査を実施しています。

“WPEKA on our solar tracker rotation shafts. Dual-stage reducer mounts directly on the tracker shaft — no separate frame, no coupling. 1/600 ratio from a standard motor. Clean, elegant installation.”

“Used WPEKA on our slow-speed cooling conveyor head shaft drives. Hollow bore on the head shaft, dual-stage for 1/500 ratio — belt speed exactly as required without VFD. Straightforward to install.”

“WPEKA shaft-mount on large valve actuator stems. No coupling at the valve stem level — eliminates the corrosion-prone hardware that was failing in our outdoor installation. Zero failures since changeover.”

“Good ultra-high ratio hollow bore unit. WPEKA-80–135 on our turntable drives. Direct shaft mount, 1/600 ratio, correct torque. Would appreciate a backlash specification for precision positioning assessment.”