I. Product Overview:

? The machine features a simple and aesthetically pleasing design, compact size, and lightweight construction, making it easy to operate and highly flexible. It allows simultaneous operation on both sides of the rail for tightening or loosening sleeper nuts, ensuring high work efficiency;
? The machine adopts a fully enclosed oil-lubricated transmission system, providing excellent lubrication, wear resistance, and long service life. With meticulous design and processing, it offers high strength, rigidity, and minimal failure, making it suitable for use in harsh outdoor environments;
? It delivers a wide range of tightening torque outputs, allowing easy adjustment according to operational requirements with accuracy, stability, and reliability;
? The nut socket utilizes a universal floating connection method, enabling easy engagement with sleeper bolt nuts. During operation, if the socket jams with the sleeper bolt nut, it can be quickly and conveniently detached from the main unit, allowing the machine to be swiftly moved outside the railway clearance to ensure construction safety;
? This dual-head sleeper internal combustion bolt wrench is suitable for straight and curved track lines laid with various types of rails in China, providing efficient, stable, and safe construction and maintenance for sleeper fasteners;
? The product meets the requirements of TB/T3099 "General Technical Conditions for Sleeper Bolt Power Wrenches".

II. Technical Parameters:

NLB-600-1P Internal Combustion Dual-Head Bolt Wrench (For Conventional Railways)
Technical Parameters: Four-stroke gasoline engine (Power 170F) 7HP
Tightening Torque Adjustment Range: 80–350 N·m
Maximum Loosening Torque: ≥600 N·m
Working Socket Speed: 136 r/min
Socket Center Distance: 214 mm
Work Efficiency: ≤3 seconds per nut
Machine Weight: 70 kg
Dimensions (L×W×H): 825×585×975 mm

NLB-600-1G Internal Combustion Dual-Head Bolt Wrench (For High-Speed Railways)
Technical Parameters: Four-stroke gasoline engine (Power 170F) 7HP
Tightening Torque Adjustment Range: 80–350 N·m
Maximum Loosening Torque: ≥650 N·m
Working Socket Speed: 136 r/min
Socket Center Distance: 234 mm
Work Efficiency: ≤3 seconds per nut
Machine Weight: 73 kg
Dimensions (L×W×H): 825×585×975 mm