Products
Custom Auto Reset Shank Parts Spring Assembly for Cultivators
Precision-engineered auto reset shank parts spring assemblies for heavy-duty cultivators. Featuring a 52CrMnMoV alloy cast housing, ±0.05mm CNC accuracy, and 8,000 lb impact resistance. IATF 16949 certified for global purchasers, wholesalers, distributors.
Colour: Original / Black
Materials: High quality alloy steel
Production processes:
Precision casting process
Precision CNC machining
Heat Treatment:Normalizing, Annealing, Quenching, Tempering
Surface Finish:Shot Blasting, Polishing, Baking Varnish
Certificates: IATF16949
Transport Package: Wooden Case
Delivery Time: 15-20 Days
1. Product Introduction
Engineered to conquer the most aggressive modern agricultural environments, our Auto Reset Shank Part Spring Assembly ensures your heavy-duty tillage equipment operates seamlessly through extreme field conditions.
This premium assembly features a high-tension heavy-duty compression spring housed within a robust, investment-cast protective casing. The core structural components are forged from high-grade 52CrMnMoV alloy steel, designed to absorb massive shock loads of up to 8,000 lbs during underground rock strikes. By pairing a responsive spring mechanism with a high-strength cast body, this unit prevents permanent frame deformation. Whether you are an OEM manufacturer or a large-scale agricultural parts distributor, this assembly delivers the perfect balance of rigid wear resistance and controlled flex to maximize machine uptime.
2. Technical Specifications
| Specification | Details |
| Product Name | Custom Premium Auto Reset Shank Part Spring Assembly for Cultivators | 52CrMnMoV Forged |
| Core Materials | Housing: 52CrMnMoV alloy steel / Spring: High-tensile spring steel |
| Impact Resistance | Up to 8,000 lbs (rock strike capacity) |
| Hardness | Cast Housing: HRC 34-38 ; Wear/Contact Points: HRC 45+ |
| Elongation | 12% (Allows for controlled flex during auto-reset) |
| Casting Tolerance | ±0.2mm (Precision investment casting) |
| Machining Accuracy | ±0.05mm on critical surfaces (e.g., polished mounting bores) |
| Pivot Alignment | ±0.1mm (CMM verification) |
| Surface Finish | Black baking varnish housing / Anti-rust coated spring / Optional Dacromet |
| Quality System | IATF 16949 Certified |
3. Key Features
- Visual Precision Mechanics: As seen in the highly polished mounting eyelet and precision-ground alignment pins, the unit boasts incredibly tight tolerances (±0.05mm). This guarantees frictionless integration with cultivator frames and shanks.
- Patented Reset Mechanism: Incorporating a 55° shear bolt design (Grade 8), the high-compression spring provides consistent tripping and rapid recovery performance, protecting the main implement frame from hidden obstacles.
- Exceptional Stress Distribution: Optimized housing geometry and advanced thermal cycling ensure that impact stress is evenly distributed across the assembly, providing exceptional wear resistance in highly abrasive, rocky soils.
- Superior Coating Adhesion: All metal substrates undergo SAE J444 standard shot blasting prior to coating. The durable black baking varnish and weather-resistant spring coating prevent rust and chemical corrosion caused by fertilizers.
4. Manufacturing & Quality Control
Our production facility operates strictly under the IATF 16949 automotive-level quality management system, bringing unparalleled reliability to agricultural components:
- Investment Casting & CNC Machining: Complex housings are formed via precision investment casting, followed by 5-axis CNC machining for the mounting eyes and pin holes, resulting in the mirror-like bore finish shown in the product images.
- Complete Thermal Cycle: Components undergo normalizing (900-920°C), annealing, oil quenching (850°C), and tempering (540-600°C). This locks in HRC 34-38 hardness while maintaining the 12% elongation vital for the reset mechanism.
- Zero-Defect Inspection: Every production batch is subjected to 200% overload compression testing and Magnetic Particle Inspection (MPI) to eliminate subsurface micro-fractures, followed by Coordinate Measuring Machine (CMM) verification.
5. Applications
Designed for heavy-duty secondary tillage, these auto reset assemblies are the ideal OEM replacement or upgrade for:
- Heavy-duty field cultivators
- Chisel plows and subsoilers
- Seedbed preparation implements
- Strip-till and row-crop cultivators operating in rocky or root-heavy terrain
6. Accessories & Matching Parts
To ensure a fully integrated reset system, we supply perfectly matched OEM accessories:
| Cultivator Shanks (S-Tines/C-Shanks): | Designed to mount seamlessly to the lower pivot point of the assembly. |
| Shear Bolts: | Grade 8 bolts specifically calibrated for the 55° reset mechanism. |
| Bushing Kits: | Hardened steel wear bushings for the pivot bores to extend service life. |
| Sweeps & Reversible Points: | Standard bolt-on ground-engaging tools. |
7. Notes for Bulk Purchasing
- Custom Coatings & Aesthetics: Our standard model (pictured) features a black housing and yellow/orange spring. For coastal or highly corrosive soil environments, we strongly recommend the optional Dacromet® coating (1,200+ hours salt spray resistance). Custom Pantone color matching and cast-in OEM logos are available.
- Lead Times: Due to the comprehensive thermal cycling and MPI testing, standard bulk orders require a 30-45 day lead time.
- Heavy-Duty Packaging: Because these assemblies are heavy and contain pre-tensioned springs, all bulk shipments are securely packed in export-grade reinforced steel pallets or fumigated wooden crates to prevent transit damage.
8. Frequently Asked Questions (FAQ)
Q: Can you customize the bore dimensions and pin sizes to fit our proprietary cultivator frame?
A: Yes. Our in-house 5-axis CNC machining capabilities allow us to easily adjust pivot bores and pin diameters to perfectly match your proprietary equipment specifications with ±0.05mm accuracy.
Q: Why use 52CrMnMoV steel instead of standard carbon steel?
A: 52CrMnMoV is a premium alloy containing Chromium, Manganese, Molybdenum, and Vanadium. Compared to standard carbon steel, it offers vastly superior hardenability, higher impact toughness (crucial for surviving 8,000 lb rock strikes), and excellent fatigue limits—making it ideal for high-frequency compression cycles.
Q: Do you provide material and testing certificates with commercial shipments?
A: Absolutely. As an IATF 16949-certified manufacturer, every commercial invoice is accompanied by a full Material Composition Report, Hardness & Thermal Testing Results, and Magnetic Particle Inspection (MPI) Certificates.
Partner with industry-leading precision casting experts to bring your vision to life. We specialize in delivering custom, high-quality casting solutions. With years of experience, cutting-edge technology, and an unwavering commitment to excellence, we ensure every component exceeds your expectations.