Myanmar Train coupler draft key

Product Advantages and Features

   AAR standard coupler is the leading product for heavy duty railway wagons in the worldwide. Our AAR couplers are furnished with bodies, knuckles, and locks of quenched and tempered grade E steel, which are high strength structure, reliable safety performance, and high interchangeability. It obtains obvious superiority in improving the safety and reliability of transportation and the efficiency of train formation. AAR standard coupler mainly includes type E, type F, type FR and type EF. Except type F coupler and type FR coupler are equipped with primary anti-creep mechanism to prevent disengagement, the new-built type E and type EF couplers have the anti-creep mechanism design too.

1) E type coupler: The latest model is E60EE and approved to be AAR standard coupler in 2000. Comparing with the previous model E60DE, it optimizes wall of knuckle side, knuckle tail end face and lock face, and coupler lock face structure, further controls the longitudinal free clearance of coupler. Besides, AAR present service E type coupler has E60DE, SBE60EE and SBE60DE with bottom shelf, SE60EE with top and bottom shelf, and SBE67DE with bottom shelf and long body.

2) F type and FR type coupler: F type interlock coupler obtains high strength structure, small coupling clearance, anti-creep, interlock and automatic centering functions, reliable three states operation and anti-creep performance, good curve passing performance. FR type coupler is a rotatable interlock coupler, it was developed to meet the requirement of mass goods transportation and turnover discharge. AAR present service F type coupler has F70DE, SF70DE with top shelf, F79DE with long body, etc. FR type coupler has FR207AE, FR209E, etc.

3) EF type coupler: It was developed on the base of E and F type couplers to provide enough lateral oscillating quantity for train curve passing. It mainly applies to the railway wagons with longer traction beam. It obtains the features of high strength structure, good curve passing performance. AAR present service EF type coupler has E68DE, E69CE, SBE68DE with bottom shelf, SE68DE with top and bottom shelf, etc.

Product Quality Assurance

   We have advanced computer aided design (CAD), computer aided manufacturing (CAM), auxiliary management system and complete manufacturing & testing equipments, 3 D laser scanner was introduced for the product testing too. At the same time, we introduced a high degree of automation professional line for castings flow-line production, which ensures production process, quality, quantity, and time of delivery. This production line was commended by AAR certification authority.

   We have a complete series of smelting equipments, teeming equipments, molding equipments, sand shakeout equipments, heat treatment equipments, machining equipments, and assembly lines, and testing equipments. Smelting adopts duplex process with 20Tons high power eccentric bottom basic electric furnace and 25Tons LF ladle refining furnace. Professional testing equipments include spectrometer, metalloscope, material testing machine, impact testing machine, foundry sands testing equipments, X-ray flaw detector, magnetic particle detectors, etc.

   Our coupler conforms to AAR standard M-201 and M-211. We execute strictly the quality system according to AAR and ISO9001 certificate, and environment system according to ISO14001.

   Our quality guarantee for coupler is 5 years, and the service life of coupler knuckle is up to 600000 times.

Product Applications

   AAR standard coupler as one leading product, is widely used in USA and other countries, such as Canada, Brazil, South Africa, Australia, etc. It is mainly installed on railway wagons for heavy duty transportation. We have sold more than 60000 pieces of AAR coupler.

Customers Feedback

  The feedback from our customers is good. Coupler service life and abrasion performance are approved by the market. At the same time, we will continue to improve the product according to the requirements of our customer and the market, and make our product obtain more advantage on quality and design. Because of our constant upgrading product quality and service, we have established the long term cooperation with many customers.

 Other types of AAR standard coupler

CA-3(SA3)

Coupler Yoke

Manufacturing Process

Packing Methods

Standard packing for bulk order

Wooden case packing for sample

Other packing method according to customer's requirements

   In the meantime, we could supply the coupler components, such as knuckle, lock, lock lifter, lock lifter pin, etc. If you have any inquiry, please feel free to contact us.