Precision Transmission Components
Shanghai Yidi Precision Machinery delivers world-class mechanical drive solutions. ISO9001-2000 certified with advanced heat treatment capabilities and modern machining centers, serving agriculture, automotive, mining, packaging, and printing industries worldwide.
Locking Assemblies & Shrink Discs
Keyless shaft-hub locking devices, zero-backlash torque transmission for heavy machinery, wind turbines, and conveyors.
- Z2, Z3, Z12A standard series
- Torque up to 500,000 Nm
- Easy assembly/disassembly, high concentricity
- Custom bore and surface finishing available
Universal Joints & Cardan Shafts
High-precision universal joints with needle bearings, large angle compensation for construction, steel mills, and marine propulsion.
- Single, double, telescopic types
- Precision miniature series available
- SWC, SWP standard & custom lengths
- Maintenance-free options, wide torque range
Industrial & Agricultural Chains
High-strength wear-resistant chains for combine harvesters (Yanmar, Kubota), conveyor systems, and elevators.
- Yanmar/Kubota harvester specific chains
- Corn & peanut harvester chains
- Standard roller chains, conveyor chains, attachment chains
- Carburizing heat treatment, superior fatigue life
Elastic Couplings & Adapter Sleeves
Vibration-damping couplings and adapter/withdrawal sleeves for easy bearing mounting and dismounting.
- Jaw-type, pin & bush couplings
- ML, LM series & custom designs
- Adapter sleeves (H series), withdrawal sleeves (AH series)
- Quick installation, reduced shock loads
Super Nut & Heavy-Duty Locking System
Multi-jacking bolt technology replaces hydraulic nuts, ideal for wind towers, presses, bridges, and large bolt pre-tensioning.
- Multi-jacking bolt design, high preload accuracy
- 3x preload force of conventional nuts
- Easy removal, no hydraulic tools required
- Sizes M20 to M300+, custom thrust rings
Automotive Universal Joint (Cross Joint)
Precision cross joints for commercial vehicles, passenger cars, and off-highway vehicle drivelines, wear and impact resistant.
- Fit for heavy trucks, buses, SUVs, special vehicles
- Alloy steel, carburized & quenched
- Needle bearing sealed design, extended maintenance interval
- Size range 20×50 up to 57×152 mm
🏭 Manufacturing Strength & Quality Assurance
Shanghai Yidi operates a modern 6,000+ m² facility with three workshops and a two-story R&D office. Equipped with centerless grinders, surface grinders, CNC lathes, milling machines, planers, punch presses, and heat treatment furnaces (including high-frequency induction). All products undergo strict inspection for dimensional accuracy and mechanical properties.
✅ Certified Quality
ISO9001-2000 certified. CAD/CAPP aided design and process planning ensures traceability and consistency.
🌍 Global Reach
Exported to North America, Southeast Asia, Africa, Middle East, Laos, Myanmar, Saudi Arabia, and 28 Chinese provinces.
⚡ Fast Response
Located in Shanghai Jinshan Industrial Zone (Yangtze River Delta hub). Standard stock available, custom parts lead time as short as 7 days.
📌 Industries We Serve
🚜 Agricultural Machinery
Combine harvesters (Yanmar, Kubota), tractors, transplanters, corn/peanut harvesters – chains & drive shafts.
🏭 Industrial Equipment
Textile, packaging, printing, metallurgical, mining, conveying systems – locking assemblies & couplings.
🚗 Automotive & Shipbuilding
Commercial vehicle drivelines, steering linkages, deck machinery, marine intermediate bearings.
🔧 Custom Solutions & Technical Support
Need a special super nut, automotive cross joint, or locking assembly? Our engineering team provides drawing review, material selection, and prototype manufacturing.
📊 Quick Selection Guide
| Product Series | Torque/Preload Range | Size Range | Key Features |
|---|---|---|---|
| Z2 Locking Assembly | 200 ~ 120,000 Nm | Bore 12~400mm | Self-centering, high concentricity, heavy-duty |
| Universal Joint (Cardan) | 50 ~ 15,000 Nm | Shaft 10~120mm | Needle bearings, large angular compensation |
| Super Nut | Preload up to 3000+ kN | M20 ~ M300 | Multi-jacking bolt, hydraulic-level preload, anti-vibration |
| Automotive Universal Joint | Dynamic 500~8000 Nm | OD 20~57mm | Alloy steel carburized, needle bearings, long life |
| Industrial/Agricultural Chain | High tensile strength | Pitch 15.875~50.8mm | Wear-resistant bushings, durable |
* Technical data typical range. Contact engineers for detailed drawings and material certificates.
Trusted by customers in North America, Europe, Southeast Asia, Middle East & Africa
✓ ISO9001:2000 Certified ✓ 100% batch inspection ✓ Material certificates & dimensional reports available