The Power Take-Off (PTO) gearbox housing is a structural component that encloses and protects the gear train transferring engine power to agricultural implements. It must withstand high torsional loads, resist shock impacts from uneven terrain, dissipate heat from continuous operation, and maintain precise gear alignment over thousands of operating hours. Any dimensional deviation or casting defect can lead to gear misalignment, accelerated wear, oil leakage, or catastrophic failure during peak harvest season.
Still, Ningbo Ruican produces PTO gearbox housings using the Sand Casting process in ductile iron grades QT450-10 and QT500-7. The integrated CNC MACHINING cell ensures that bearing bore concentricity, gear pocket positioning, and mounting face flatness all meet or exceed OEM specifications.
Generally, why Ningbo Ruican is the right partner for your agricultural gearbox housing:
Season-Tested Reliability: Our castings are designed for continuous-duty agricultural applications — from spring planting to autumn harvest — without mid-season failures.
Integrated DFM Review: Our engineers review your design for castability, identify potential shrinkage zones, and optimize gating and feeding before tooling begins — reducing development time and tooling cost.
Precision CNC Machining: Bearing bores held to H7 tolerance, gear center distances within ±0.03 mm, mounting face flatness ≤ 0.05 mm — ensuring smooth gear meshing and zero oil leaks.
Heat Treatment Capability: Normalizing, quenching & tempering, and isothermal quenching (austempering) available to achieve target hardness and impact toughness.
17+ Years of Casting Experience: We understand the unique demands of agricultural equipment — dust, mud, vibration, and seasonal intensity.
Design Support:
Inspection and documentation
Wall thickness optimization for uniform solidification
Rib and boss placement for structural rigidity without weight penalty
Oil seal groove and bearing seat design recommendations
Core design for complex internal oil passages
Specifications
Parameter Specification
Process Sand casting + 4-axis CNC machining
Material QT450-10, QT500-7, QT600-3 (ductile iron)
Weight Range 5–40 kg per piece
Max Overall Dimension 600 × 400 × 350 mm
Bearing Bore Tolerance H7 (±0.015 mm)
Gear Center Distance ±0.03 mm
Mounting Face Flatness ≤ 0.05 mm
Surface Finish Ra 1.6 µm (machined), Ra 12.5 µm (as-cast)
Heat Treatment Normalizing, Q&T, or austempering per spec
Leak Test Pneumatic leak test at 0.2 MPa, 30s, zero leakage
Certification IATF 16949, ISO 9001
MOQ 200 pcs
Lead Time 4–6 weeks for production; 2–3 weeks for samples
Applications
Tractors (20–300 HP), combine harvesters, balers, rotary tillers, mowers, fertilizer spreaders, seed drills, and other PTO-driven agricultural implements.
Compatible with standard 540 RPM and 1000 RPM PTO shaft configurations.
Call to Action
Need gearbox housings that won’t fail during harvest season? Ningbo Ruican’s integrated casting + CNC facility delivers season-ready components with full IATF 16949 traceability. Send your drawings to Ruicam for a free quotation and DFM review.
