The F70DE coupler is an AAR Type F extended-shank variant engineered for heavy-haul freight operations, featuring a reinforced draft gear structure and dual-rib interlock socket to enhance durability and stress distribution while maintaining full compatibility with standard automatic coupling/uncoupling functions for demanding applications like unit train transport and rotary dumping.
Product Performance | Reference Value |
Reference Standards | AAR M201-2000 |
Material | Grade E Casting Steel |
Service | 5-8 Years Service |
Service Life | Not Less Than 600000 Cycles |
Hardness | 241~311HBW |
Impact Test | >27J(-40℉) |
Operating Temperature Range | -34℃~+121℃ (-30℉~+250 ℉) |
Surface Treatment | Organic coatings rust inhibiting treatments, compliant Chrome Free Zinc Plating and Electro-Painting. |
· The elongated coupler body accommodates wide-wheelbase freight cars while maintaining compatibility with standard Type F couplers.
· Critical stress areas feature strengthened materials and design enhancements for improved durability in heavy-haul operations.
· The innovative socket design incorporates dual reinforcement ribs to better distribute operational stresses.
· Maintains all standard automatic coupling/uncoupling functions and safety features of conventional Type F couplers.
· Targeted improvements address common failure points to extend service life in extreme operating conditions.
