サイレージデフェーサー／サイレージカッター用PTOギアボックス

Our gears utilise 20CrMnTi alloy steel with case-hardening to ensure a surface hardness of HRC 58-62 while maintaining a tough, ductile core — far superior to the mild steel gears found in inferior products.

The fully sealed gearbox housing achieves IP65-rated protection against dust and water jets, ideal for Australia’s harsh outback conditions. Budget alternatives often lack proper sealing and fail in dusty environments.

Computer-optimised gear tooth profiles achieve power transmission efficiency above 96%, reducing fuel consumption and heat generation compared to poorly designed alternatives that waste 10-15% of input power as heat.

While our upfront cost is 15-25% higher than budget options, the extended service life (10,000+ hours vs 3,000 hours typical) and lower maintenance requirements deliver 40-60% savings over the equipment lifecycle.

Multi-layer surface treatment including zinc phosphate primer and epoxy topcoat provides excellent corrosion resistance in humid coastal environments, salt spray exposure, and chemical contact from fertilizers.

Our modular gearbox platform allows field-swappable gear sets for different ratio configurations, reducing inventory costs for dealers and enabling quick adaptation to different implements.

Unpack the PTO gearbox and cross-reference the nameplate data with your order specifications. Confirm the gear ratio, input/output shaft dimensions, and rotation direction are correct for your silage defacer / silage cutter.

Prepare the silage defacer / silage cutter mounting interface by removing the old gearbox (if replacing) and cleaning all mating surfaces. Inspect mounting holes for thread damage or elongation.

Apply a thin film of anti-seize compound to the mounting bolt threads and the gearbox-to-frame mating surface. This prevents corrosion-bonding and facilitates future maintenance.

Lift the gearbox into position using appropriate lifting equipment (typical weight 25-80 kg depending on model). Never attempt to manually handle heavy gearbox units.

Insert and hand-tighten all mounting fasteners in a star pattern. Then torque to specification in two passes: first to 60% of final torque, then to 100%. Typical values: M10 = 50 Nm, M12 = 85 Nm, M16 = 210 Nm.

Attach the PTO drive shaft to the input spline. The shaft should slide freely onto the spline with no binding. If resistance is felt, check for burrs, misalignment, or incorrect spline count.

Connect the gearbox output to the silage defacer / silage cutter’s working element. Verify rotational alignment using a dial indicator if precision coupling is required. Maximum allowable angular misalignment: 1°.

Add the specified lubricant type and quantity. For most models, fill to the centre line of the sight glass with the gearbox in its normal operating position.

Reinstall all PTO shaft guards, gearbox covers, and safety decals. Ensure 360° coverage of all rotating components within operator reach.

Commission the gearbox by running at no-load for 15 minutes, then gradually introducing load over 2 hours. Record baseline temperature and vibration readings for future comparison.

Purpose: Emergency replacement of a seized silage defacer / silage cutter gearbox during peak season.

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 silage defacer / silage cutter operator.” — Daniel Pemberton, Dalby, QLD

Purpose: Sourcing a cost-effective replacement for an imported silage defacer / silage cutter 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.” — Roger Greenfield, Kingaroy, QLD

Purpose: Fitting a new silage defacer / silage cutter pto gearbox to a custom-built implement.

Customer Review: “After trying two cheaper alternatives that both failed within a season, we switched to this gearbox. It has now run over 1,500 hours without any issues. Quality is outstanding.” — David Clarke, Warwick, QLD

Purpose: Upgrading the pto gearbox on a fleet of three silage defacer / silage cutter units.

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.” — Karen Mitchell, Gatton, QLD

Purpose: Bulk purchase of silage defacer / silage cutter gearboxes for a machinery dealer network.

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.” — Chris Lawson, Stanthorpe, QLD

The correct gear ratio depends on your tractor’s PTO speed (540 or 1000 RPM) and the required implement speed. For most silage defacer / silage cutter applications, ratios between 1:1.5 and 1:2.6 are common. Our engineering team can calculate the optimal ratio based on your specific tractor and silage defacer / silage cutter model. Contact us with your specifications for a free recommendation.

Yes, our PTO gearboxes are designed as direct replacements for major brand silage defacer / silage cutter 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.

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.

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.

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.

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.

Absolutely. Our silage defacer / silage cutter 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 silage defacer / silage cutter 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.

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.

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.

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.