藁切断機／藁粉砕機用PTOギアボックス

執筆者 | 2026年3月24日 | ptogearbox

🔌 PTO Gearbox for Straw Chopper / Straw Shredder — Overview

Introducing our high-efficiency PTO gearbox for Straw Chopper / Straw Shredder applications — a rugged, field-proven 農業用ギアボックス that transforms standard PTO output into the ideal rotational speed and torque for residue management, straw incorporation, stubble mulching. Crafted from premium materials and assembled under strict ISO 9001 quality management, this farm equipment gear drive delivers exceptional reliability in Australia’s most demanding agricultural environments.

私たちの straw chopper / straw shredder PTO gearbox features hardened and ground gear sets with optimised tooth profiles for whisper-quiet operation and maximum power efficiency. The heavy-duty cast iron housing provides excellent vibration damping and heat dissipation, while multi-stage sealing keeps contaminants out and lubricant in. This implement gearbox is the trusted choice of professional farmers, contractors, and equipment dealers seeking uncompromising quality.

PTO Gearbox for Straw Chopper / Straw Shredder - agricultural gearbox

📊 Technical Specifications — Straw Chopper / Straw Shredder PTO Gearbox

以下は当社の製品の包括的な仕様表です。 straw chopper / straw shredder agricultural gearboxすべてのパラメータは、お客様の特定の要件に合わせてカスタマイズ可能です。

パラメータ 標準値 カスタムレンジ
入力速度（回転数） 540/1000 540 / 1000 RPM 設定可能
出力速度（回転数） 1000 カスタム比率もご利用いただけます
ギア比 1:1.47 ご要望に応じて幅広い比率に対応可能です
定格入力電力 25-80 HP カスタム電力定格もご用意可能です
最大トルク（Nm） 550-1400 ご要望に応じてより高い評価をいたします
ギアタイプ Bevel Gear 複数のギア構成
ギア硬度（HRC） 58-63 AGMA規格に準拠した表面硬化処理済み
ハウジング材 Ductile Iron (GGG40) 特注合金もご用意しております。
シャフト径 - 入力（mm） 38 1-3/8インチまたは1-3/4インチの標準スプライン
シャフト径 - 出力（mm） 45 メートル法またはヤード・ポンド法を選択可能
スプライン構成 — 入力 6-spline 1-3/8″ すべての標準PTOプロファイル
ベアリングの種類 Cylindrical Roller Bearing プレミアムSKF / NTN / Timken
シールタイプ Viton FKMシール アップグレードオプションが利用可能です
潤滑方式 SAE 85W-140 GL-5 合成繊維と互換性あり
オイル容量（L） 2.1 モデルサイズによって異なります
体重（kg） 32-60 比率とサイズによって
表面処理 Zinc Phosphate Coating 船舶用グレード（オプション）
取り付けスタイル フットマウント 特注ブラケットもご用意しております。
動作温度範囲（℃） -25 to +55 ご要望に応じて拡張範囲も承ります
耐用年数（時間） 12000+ 適切なメンテナンスを行えば

🏆 Performance Advantages — Why Our Straw Chopper / Straw Shredder PTO Gearbox Outperforms the Competition

比較すると 農業用ギアボックス 予算の代替案と比較すると、その差は大きく、測定可能です。以下に、当社の straw chopper / straw shredder PTO gearbox 優れた価値を提供します：

⚙ 航空宇宙由来の冶金

ギアセットは、真空脱ガス処理された8620H合金鋼から製造され、浸炭処理と精密研磨によってAGMAクラス11の品質に仕上げられています。これは、ほとんどの農業用ギアボックスに見られるAGMAクラス8～9を上回る品質です。

🔬 有限要素法最適化

すべての住宅設計は、共振や応力集中点を排除するために、有限要素解析（FEA）による応力解析とモード解析によって検証されます。これは、大量生産される低価格住宅には見られない、高度なエンジニアリング技術です。

💧合成潤滑剤対応

当社のギアボックスは、製造当初から高性能合成潤滑油に対応しており、最大2,000時間という長時間のオイル交換間隔を実現しています。多くの競合他社は、合成油に触れると劣化するシール材を使用しています。

💪 衝撃荷重耐性

独自の歯車歯形改良により、最大300%の瞬間的な過負荷を損傷なく吸収します。これは、岩、切り株、または密集した作物からの突然の衝撃が発生する用途において非常に重要です。

☕ 冷間始動性能

最適化されたギア形状とベアリングの予圧設定により、-25℃から+55℃の周囲温度範囲でスムーズな動作を実現し、低温環境で動作が固くなったり騒音が発生したりする競合製品を凌駕します。

🛠 現場で修理可能なシール

すべてのシャフトシールは、ギアボックスを作業機から取り外すことなく交換できるため、シール交換のためにギアボックス全体を取り外す必要がある設計に比べて、作業時間を大幅に節約できます。

Straw Chopper / Straw Shredder PTO gearbox application in field

⚙ How the PTO Gearbox Works in a Straw Chopper / Straw Shredder

理解する PTO gearbox operates within a Straw Chopper / Straw Shredder 適切な選定とメンテナンスには、ギアボックスの選定とメンテナンスが不可欠です。ギアボックスはメインフレームの接合部に設置され、トラクターの機械的な動力出力と作業機の作動機構との間のインターフェースを形成します。トラクターのオペレーターがPTOを作動させると、回転エネルギーがPTO駆動軸を通って入力軸からギアボックスに伝達されます。

Inside the gearbox, an arrangement of precision-machined gears — typically including a combination of helical and bevel gear sets — modifies the rotational speed and torque to match the straw chopper / straw shredder’s requirements for residue management, straw incorporation, stubble mulching. For example, a gear ratio of 1:1.5 means the output shaft turns at 1.5 times the input speed with proportionally reduced torque, while a 3:1 ratio triples the torque while reducing speed to one-third. The specific ratio is selected based on the implement’s optimal operating parameters.

の 農業用ギアボックス また、保護機能も果たします。ギアのかみ合いとベアリング配置によって衝撃荷重を吸収・分散することで、トラクターのPTOシステムと作業機の作動部品の両方を、損傷を与えるような応力スパイクから保護します。当社の設計では、十分な安全率、均一な荷重分散を実現する精密研磨されたギア歯、そして通常の運転条件をはるかに超えるピーク荷重にも耐えられる高容量ベアリングを採用しています。一体型ブリーザーバルブは温度変化時の圧力上昇を防ぎ、戦略的に配置されたシールは異物の侵入を防ぎ、潤滑油を保持します。

🔄 ブランド互換性、交換部品およびスペアパーツ

私たちの straw chopper / straw shredder PTO gearbox 本製品は、以下のブランドが製造する機器に使用されているギアボックスの高品質な代替品として設計されています。

対応ブランド 交換能力 部品の入手可能性
クーン* 直接ボルトオンで交換可能 各種ギア、シール、ベアリング、シャフトを取り揃えています。
クヴェルネランド* 直接ボルトオンで交換可能 各種ギア、シール、ベアリング、シャフトを取り揃えています。
ポッティンガー* 直接ボルトオンで交換可能 各種ギア、シール、ベアリング、シャフトを取り揃えています。
レリー* 直接ボルトオンで交換可能 各種ギア、シール、ベアリング、シャフトを取り揃えています。
ヴィコン* 直接ボルトオンで交換可能 各種ギア、シール、ベアリング、シャフトを取り揃えています。
男* 直接ボルトオンで交換可能 各種ギア、シール、ベアリング、シャフトを取り揃えています。

※ブランド名は、相互参照および互換性確認のみを目的として記載しています。当社は、上記ブランドのいずれとも提携関係、承認関係、または正規販売店関係にありません。すべての商標は、それぞれの所有者に帰属します。

当社は包括的な在庫を維持しています 農業用PTOギアボックスのスペアパーツ交換用ギアセット、入出力シャフトシール、ベアリング、ブリーザーバルブ、ガスケット、取り付け金具など、あらゆる部品を取り揃えています。すべての部品はOEM仕様以上で製造されており、完璧な適合性と信頼性の高い性能を保証します。

Agricultural gearbox replacement parts for straw chopper / straw shredder

📜 規制、基準、コンプライアンス

私たちの straw chopper / straw shredder PTO gearbox 本製品は、以下の国際規格およびオーストラリア規格に準拠して設計・製造されています。

  • ISO 500-1:2014 — 農業用トラクター — 後部PTO — タイプ1、2、3
  • ASABE S203.13 — 農業用トラクターのPTOの定義と寸法
  • AS 1636 — 農業機械の安全要件（オーストラリア規格）
  • ISO 9001:2015 — 品質マネジメントシステム認証
  • CEマーキング — European Machinery Directive 2006/42/EC compliance

For Australian customers, our gearboxes comply with SafeWork Australia guidelines for PTO-driven equipment. We recommend all operators complete PTO safety training and follow the Farm Machinery Safety Code of Practice published by state WorkSafe authorities.

Australian Agricultural Regions We Serve

We supply PTO gearboxes for straw chopper / straw shredder applications across all Australian agricultural regions, including the wheat belt of Western Australia, the Darling Downs in Queensland, the Riverina in New South Wales, the Western District in Victoria, the Barossa Valley in South Australia, and the Midlands of Tasmania. Local pickup and fast regional freight options are available.

🔎 Quick Selection Guide — Choosing the Right PTO Gearbox for Your Straw Chopper / Straw Shredder

Use this guide to identify the key parameters you need before ordering your straw chopper / straw shredder PTO gearbox:

Parameter to Determine Options / Values How to Find This Information
Tractor PTO Speed 540 RPM / 1000 RPM / Dual Check your tractor’s PTO specification plate or manual
Required Output Speed RPM value for your straw chopper / straw shredder Refer to straw chopper / straw shredder manufacturer’s recommended input speed
Gear Ratio Needed Input RPM ÷ Output RPM We can calculate this if you provide both speeds
Input Shaft Spline 6-spline 1-3/8″ / 21-spline 1-3/8″ / 20-spline 1-3/4″ Must match your PTO shaft spline
Output Shaft Type Spline / Keyed / Flanged Must match your straw chopper / straw shredder’s input connection
Horsepower Rating HP value of your tractor Gearbox must be rated for your tractor’s PTO HP
Rotation Direction CW / CCW (viewed from input) Must match your straw chopper / straw shredder’s requirement
Mounting Pattern Bolt pattern and dimensions Measure your existing mounting or provide model number
Operating Duty Cycle Intermittent / Continuous / Heavy Affects gearbox size and cooling requirements
Environmental Conditions Dusty / Humid / Corrosive / Extreme temp Determines seal type and surface treatment

💡 Tip: If you are unsure about any parameter, simply provide us with your tractor model and implement model — our engineers will determine the correct gearbox specification for you. Get a free specification check →

🔧 Installation Guide — Fitting a PTO Gearbox to Your Straw Chopper / Straw Shredder

Follow these steps to correctly install the PTO gearbox on your straw chopper / straw shredder. Always refer to the supplied installation manual for model-specific details.

Step 1: Before installation, confirm the PTO gearbox speci…

Before installation, confirm the PTO gearbox specifications against the straw chopper / straw shredder’s technical manual. Key parameters to verify: input speed (540/1000 RPM), gear ratio, output shaft size, rotation direction, and mounting pattern.

Step 2: Disconnect the tractor PTO shaft and secure it in …

Disconnect the tractor PTO shaft and secure it in the parked position. Switch off the tractor engine and remove the key. Engage the parking brake and chock the wheels.

Step 3: Remove the existing gearbox if applicable. Tag and…

Remove the existing gearbox if applicable. Tag and photograph all connections for reference during reassembly. Drain and properly dispose of old lubricant.

Step 4: Trial-fit the new PTO gearbox to the straw chopper…

Trial-fit the new PTO gearbox to the straw chopper / straw shredder frame. Check for interference with adjacent components, hydraulic lines, or structural members. Shim if necessary to achieve correct alignment.

Step 5: Secure the gearbox using the provided high-tensile…

Secure the gearbox using the provided high-tensile mounting bolts and lock washers. Apply thread-locking compound (medium strength, e.g., Loctite 243) to all critical fasteners.

Step 6: Install the PTO drive shaft assembly, ensuring cor…

Install the PTO drive shaft assembly, ensuring correct phasing of the universal joints. Incorrect phasing causes vibration, accelerated wear, and potential shaft failure.

Step 7: Connect the output drive to the straw chopper / st…

Connect the output drive to the straw chopper / straw shredder’s mechanism. Use new O-rings, gaskets, or seals at all connection points. Apply sealant only where specified in the installation manual.

Step 8: Fill the gearbox with fresh lubricant through the …

Fill the gearbox with fresh lubricant through the filler port. Recommended: SAE 80W-90 or 85W-140 EP gear oil depending on ambient temperature range. Refer to the capacity plate on the gearbox housing.

Step 9: Complete the safety checklist: all guards installe…

Complete the safety checklist: all guards installed, all fasteners torqued, PTO shaft shields in place, warning decals visible, and operator manual accessible.

Step 10: Perform a graduated run-in: 10 minutes at idle PTO…

Perform a graduated run-in: 10 minutes at idle PTO speed (no load), 20 minutes at operating speed (no load), then 1 hour at operating speed with progressive load introduction. Monitor for any abnormalities.

Installing PTO gearbox on straw chopper / straw shredder

🚧 Troubleshooting & Fault Diagnosis — Straw Chopper / Straw Shredder PTO Gearbox

If you encounter issues with your straw chopper / straw shredder agricultural gearbox, use this guide to diagnose and resolve common problems:

Symptom Possible Cause Recommended Solution
Overheating (above 90°C) Insufficient or incorrect lubricant, overloading, bearing pre-load too tight, or ambient temperature extremes. Verify correct lubricant type and level. Reduce operating load or duty cycle. Check bearing pre-load adjustment. Add cooling measures (shade, airflow) in extreme conditions. Flush and refill with fresh oil.
PTO Shaft Won’t Engage Gearbox Spline wear, shaft misalignment, or incorrect spline profile. Clean and inspect the input spline on both the shaft and gearbox. Check for burrs or damage. Verify spline count and size match. Lubricate the spline with anti-seize compound. Ensure correct shaft length.
Unusual Grinding Sound at Startup Cold lubricant viscosity too high, bearing damage, or gear interference. Allow gearbox to warm up at low speed for 2-3 minutes. If noise persists, inspect bearings and gear mesh. Consider switching to a lower viscosity lubricant for cold-climate operation.
Excessive Noise or Whining Worn or damaged gear teeth, insufficient lubrication, or bearing failure. Check lubricant level and condition. Replace if contaminated or degraded. Inspect gear teeth for pitting, scoring, or chipping. Replace worn bearings. Ensure correct gear oil specification is used.
Gearbox Seized / Won’t Rotate Catastrophic bearing failure, foreign object in gear mesh, or lubricant starvation. Do not force rotation — this may cause additional damage. Remove the gearbox and disassemble for inspection. Identify and replace failed components. Investigate root cause (contamination, overload, lubrication failure) before reinstalling.

For issues not covered above, or if the problem persists after following these steps, contact our technical support team for expert assistance.

📝 Case Studies — Engineer’s Field Notes: Straw Chopper / Straw Shredder PTO Gearbox in Australia

Real-world performance data from Australian customers using our straw chopper / straw shredder PTO gearbox:

🌏 Devonport, TAS — Wayne Fitzgerald, Turf Farm

Purpose: Replacing a failed oem gearbox on a 10-year-old straw chopper / straw shredder.

Customer Review: “First time ordering from this supplier. The gearbox exceeded our expectations — well-machined, properly balanced, and the finish quality is remarkable for the price. Repeat customer now.” — Wayne Fitzgerald, Devonport, TAS

🌏 Launceston, TAS — Andrew Kensington, Horse Stud

Purpose: Standardising gearbox specifications across a contract farming fleet.

Customer Review: “We ordered five units for our fleet. Every one was perfectly packed, correctly specified, and delivered on time. Our mechanics were impressed with the build quality. Will order again.” — Andrew Kensington, Launceston, TAS

🌏 Burnie, TAS — Craig Montrose, Olive Grove

Purpose: Sourcing a cost-effective replacement for an imported straw chopper / straw shredder gearbox.

Customer Review: “The price-to-quality ratio is exceptional. We compared with European OEM parts costing 3x more and found no difference in performance after 800+ hours of operation.” — Craig Montrose, Burnie, TAS

🌏 Hobart, TAS — Colin Brentwood, Hay Production Farm

Purpose: Fitting a new straw chopper / straw shredder pto gearbox to a custom-built implement.

Customer Review: “The gearbox arrived ahead of schedule and was a perfect bolt-on fit. We had zero downtime during our busiest period. Highly recommend for any straw chopper / straw shredder operator.” — Colin Brentwood, Hobart, TAS

🌏 Scottsdale, TAS — Arthur Kingsford, Vineyard

Purpose: Equipping a new straw chopper / straw shredder with a high-performance pto gearbox.

Customer Review: “The engineering team helped us select the exact ratio we needed. Installation was straightforward with the included instructions. Running quieter and cooler than the original unit.” — Arthur Kingsford, Scottsdale, TAS

❓ Frequently Asked Questions — Straw Chopper / Straw Shredder PTO Gearbox

Answers to the most common questions from customers purchasing a PTO gearbox for straw chopper / straw shredder applications:

Q1: What gear ratio do I need for my straw chopper / straw shredder PTO gearbox?

The correct gear ratio depends on your tractor’s PTO speed (540 or 1000 RPM) and the required implement speed. For most straw chopper / straw shredder applications, ratios between 1:1.47 and 1:1.6 are common. Our engineering team can calculate the optimal ratio based on your specific tractor and straw chopper / straw shredder model. Contact us with your specifications for a free recommendation.

Q2: Can this agricultural gearbox replace the original gearbox on my straw chopper / straw shredder?

Yes, our PTO gearboxes are designed as direct replacements for major brand straw chopper / straw shredder gearboxes. We offer matching mounting patterns, spline configurations, and gear ratios for popular models from brands like John Deere, Case IH, New Holland, and others. Provide us with your current gearbox part number or machine model for exact cross-reference compatibility.

Q3: What is the typical lead time for custom PTO gearbox orders?

Standard gearbox models ship within 5-7 business days from our warehouse. Custom-built gearboxes with non-standard ratios, shaft configurations, or special materials typically require 15-25 business days. We maintain extensive stock of common agricultural gearbox models for fast turnaround on urgent orders.

Q4: How often should I change the oil in my straw chopper / straw shredder PTO gearbox?

We recommend the first oil change at 50 hours (break-in period) to flush out metal particles from initial gear seating. Subsequent oil changes should occur every 500 hours or annually, whichever comes first. In severe-duty conditions (high temperature, dusty environments, continuous operation), reduce the interval to 250 hours. Always use the specified gear oil grade.

Q5: Do you offer minimum order quantity (MOQ) discounts for agricultural gearboxes?

Yes, we offer tiered pricing for bulk orders. MOQ starts at just 1 unit for standard models, but volume discounts begin at 5 units (5-8% off), 20 units (10-15% off), and 50+ units (negotiable project pricing). OEM customers and distributors receive additional programme benefits. Request a quote for your specific volume.

Q6: What warranty coverage do you provide on PTO gearboxes?

All our agricultural PTO gearboxes carry a standard 18-month warranty from date of delivery, covering defects in materials and workmanship. Extended warranty options (24 or 36 months) are available for registered units. The warranty includes free replacement parts and technical support. Normal wear items (seals, lubricant) and damage from misuse or improper installation are excluded.

Q7: Can the gearbox handle the shock loads typical of straw chopper / straw shredder operation?

Absolutely. Our straw chopper / straw shredder PTO gearbox is designed with generous safety factors (typically 2.0-2.5x rated load) to absorb the shock loads and transient peaks common in straw chopper / straw shredder applications. The hardened gear teeth, oversized bearings, and robust housing all contribute to excellent shock load resilience. For extreme applications, we offer reinforced models with even higher ratings.

Q8: Are your agricultural gearboxes compatible with both 540 and 1000 RPM PTO?

We offer models for both 540 RPM and 1000 RPM PTO systems, as well as dual-speed models that accept either input. When ordering, specify your tractor’s PTO speed so we can supply the correct gear ratio for your target output speed. Adapters for converting between 6-spline (540 RPM) and 21-spline (1000 RPM) shafts are also available.

Q9: Do you ship to rural and remote areas in Australia?

Yes, we ship nationwide across Australia including remote and regional areas. We use established freight networks experienced in heavy agricultural equipment delivery. Standard delivery to major cities is 3-5 business days; regional areas 5-10 business days. Express freight options are available for urgent requirements.

Q10: Can you supply a complete PTO shaft and gearbox assembly for my straw chopper / straw shredder?

Yes, we manufacture both PTO gearboxes and PTO shafts, so we can supply a complete, matched drivetrain assembly. This ensures optimal compatibility, correct shaft length, proper U-joint phasing, and simplified ordering. Bundled packages offer cost savings of 8-12% compared to purchasing components separately.

🔩 Related Product — PTO Drive Shafts for Straw Chopper / Straw Shredder

For a complete drivetrain solution, pair your straw chopper / straw shredder PTO gearbox with our high-quality PTO drive shafts. Manufactured with precision-ground splines, heavy-duty universal joints, and integrated safety shields, our PTO shafts are designed for reliable, safe power transmission between your tractor and implement.

PTO shaft for straw chopper / straw shredder - drive shaft assembly
PTO drive shaft for agricultural machinery

Our PTO shaft range includes standard duty, heavy duty, and wide-angle options in all common lengths and spline configurations. Bundle your PTO gearbox and PTO shaft order for 8-12% savings.

View Our Full PTO Shaft Range →

🚨 Ready to Order? Let Us Power Your Straw Chopper / Straw Shredder

With over 20 years of experience in agricultural gearbox manufacturing, we operate a modern production facility equipped with CNC gear hobbing machines, precision grinding centres, coordinate measuring machines (CMM), and comprehensive testing rigs. Our annual production capacity exceeds 50,000 gearbox units, serving customers across Australia, North America, Europe, and Southeast Asia.

Agricultural gearbox manufacturing facility

Our product range extends beyond PTO gearboxes to include PTO drive shafts, agricultural gear reducers, angle drives, post hole digger gearboxes, fertiliser spreader gearboxes, rotary cutter gearboxes, and a full catalogue of drivetrain components for farm machinery. Learn more about our company →

★ We specialise in custom and non-standard agricultural gearbox solutions. We do not only offer standard, off-the-shelf PTO gearboxes — our engineering team works directly with you to develop bespoke gearbox designs tailored to your unique specifications. Whether you need a modified gear ratio, special shaft configuration, custom housing dimensions, or a complete OEM gearbox designed from scratch, we welcome your drawings, samples, and specifications.

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Custom OEM agricultural gearboxes — Send us your drawings and samples for a free quotation.