# 504 Tractor: The All-Around Power Partner for Medium-Sized Farms

I. Overview of the 504 Tractor The 504 tractor is a classic medium-sized wheeled tractor and a mainstay model in the 50-horsepower class. As a representative product of China's independent brands, the 504 tractor has become one of the preferred models for medium-sized farms, planting cooperatives, and agricultural machinery service organizations across the country, thanks to its reliable performance, reasonable price, and wide adaptability. This tractor model strikes an excellent balance between power performance and economy, and is capable of meeting a variety of agricultural production needs. II. Main Technical Specifications of the 504 Tractor ■ Engine Configuration - Model: LR4A3L-23 - Type: Inline, water-cooled, four-stroke diesel engine - Rated Power: 50 hp (36.8 kW) - Rated Speed: 2300 r/min - Number of Cylinders: 4 ■ Transmission System - Gearbox: 4×3 mechanical gearbox (12 forward gears + 4 reverse gears) - Clutch: Dual-action dry friction clutch - Braking System: Mechanical brake ■ Hydraulic System - Hydraulic Output Flow: 26 L/min - Maximum Lifting Force: ≥10 kN ■ Power Take-Off (PTO) - Speed: 540/720 r/min (optional) - Standard 8-tooth spline shaft ■ Running System - Front Wheels: 7.50-16 - Rear Wheels: 12.4-28 - Drive Type: 4×2 rear-wheel drive (optional 4×4) ■ Dimensions - Length × Width × Height: 3680 × 1880 × 2450 mm - Wheelbase: 1950 mm - Minimum Ground Clearance: 380 mm ■ Operating Weight - Basic Model: Approx. 2100 kg III. Performance Features of the 504 Tractor 1. Superior Power Performance - Equipped with a four-cylinder diesel engine, high low-speed torque, ample power reserve - Low fuel consumption rate, excellent economy (rated fuel consumption rate ≤245 g/kW·h) - Engine adopts a forced-circulation water-cooling system for excellent heat dissipation 2. Strong Operational Adaptability - 12+4 gear configuration, wide speed range (forward 1.89–30.5 km/h) - Three-point hitch conforms to national standards, compatible with a variety of implements - Hydraulic system provides high lifting force, capable of meeting heavy-load operations such as deep plowing 3. Comfortable and Convenient Operation - Flat-floor design, spacious driving space - Adjustable steering wheel, comfortable seat - Reasonable layout of control mechanisms, light and easy operation 4. Easy Maintenance - Engine adopts a mature design, strong parts commonality - Maintenance points at key locations are reasonably laid out, easy for routine maintenance - Comprehensive national service network, adequate parts supply IV. Typical Application Scenarios of the 504 Tractor 1. Field Crop Planting - Deep plowing with matched plows (recommended match: 1L-430 four-furrow plow) - Rotary tillage and land preparation (matched with 1GQN-180 rotary tiller) - Seeding operations (matched with 2BXF-12 fertilizer seeder) - Inter-row cultivation and weeding (matched with 3ZF-4.2 cultivator) 2. Cash Crop Management - Inter-row cultivation management in orchards and tea plantations - Tillage operations in vegetable greenhouses (narrow wheel track configuration required) - Planting and harvesting support for crops such as sugarcane and potatoes 3. Rural Transport Operations - Hitching 5–7 ton agricultural trailers for produce transport - Material transport in rural infrastructure construction 4. Stationary Operations - Driving stationary agricultural machinery such as threshers and crushers - Serving as a power source for pumping, power generation, and other equipment V. Purchasing Recommendations for the 504 Tractor ■ Choosing Configuration Based on Operational Needs - For paddy field operations, it is recommended to choose the four-wheel-drive version and high-lug tires - For mountainous operations, it is recommended to install a roll-over protection frame - For transport-oriented operations, consider adding an air brake system ■ Principles for Selecting Matched Implements - Plowing: Match with a 4-furrow plow (sandy loam) or 3-furrow plow (heavy clay soil) - Rotary tillage: Match with a 1.8-meter working width rotary tiller - Seeding: Match with a 12-row seeder ■ Purchasing Precautions - Check the operating condition of key components such as the engine and gearbox - Confirm that onboard tools, manuals, etc. are complete - Learn about the distribution of local after-sales service outlets VI. Key Maintenance Points for the 504 Tractor ■ Daily Maintenance - Check engine oil, coolant, and hydraulic oil levels daily - Clean the air filter (every 50 hours) - Check tire pressure and fastener condition ■ Periodic Maintenance - Engine oil change (every 250 hours) - Oil filter replacement (every 500 hours) - Gearbox oil change (every 1000 hours) - Hydraulic system filter cleaning (every 500 hours) ■ Seasonal Maintenance - Use appropriate grades of diesel and engine oil in winter - During long-term storage, drain the coolant and store the battery separately VII. Market Advantages of the 504 Tractor - High Cost-Performance Ratio: Obvious price advantage compared to imported brands of the same class - Strong Adaptability: Optimized design for Chinese farmland conditions - Extensive Service Network: Service outlets basically cover county-level areas nationwide - Good Value Retention: Good liquidity in the second-hand market, low depreciation rate VIII. User Feedback According to user surveys in multiple regions, the main advantages of the 504 tractor include: - Ample engine power and economical fuel consumption - Low failure rate and low maintenance cost - Simple operation, easy for beginners to master - Convenient implement matching and wide adaptability Common Suggestions for Improvement: - Cab comfort could be further enhanced - Steering effort is somewhat heavy on some models - Electrical system stability needs improvement IX. Conclusion As a classic model in China's medium-sized tractor market, the 504 tractor has won the trust of a broad user base with its reliable performance, economical operating costs, and wide applicability. It is particularly suitable for family farms and specialized planting cooperatives operating at a scale of 50–200 mu. As China's agricultural mechanization level continues to improve, the 504 tractor will continue to play an important role in the process of agricultural modernization and is a mainstay agricultural machinery worth considering for medium-sized farms.