TEDRAIL supply a wide range of springs for freight wagon, passenger coach, and locomotive such as Railway Bogie Springs, Railway Air Brake Cylinder Springs, Bogie Suspension Springs, Draft Gear Spring of Coupler System and many more items. AAR standard freight car trucks springs are available provided. This includes primary suspension (load) D-springs, side springs, and dual rate springs. All springs can be supplied with AAR standards.
SPRING TYPES
Helical Coil Spring / Compression Spring
Volute Spring
Leaf Spring
MATERIALS
TEDRAIL could supply following spring material for customer preferred requirement:
DIN 17221
Silico – Manganese Steel 38Si7 ,54SiCr6 ,60SiCr7
Chrome - Vanadium Steel 55Cr3, 50CrV4 ,51CrMoV4
BS EN 10089
Silico - Manganese Steel: 46Si7 , 56Si7 , 54SiCr6, 61SiCr7
Chrome - Vanadium Steel: 51CrV4 , 52CrMoV4, 60CrMo3-1
JIS G4801
Silico - Manganese Steel: SUP 6, SUP 7, SUP 9, SUP 9A
Chrome - Vanadium Steel: SUP 10, SUP 11 A, SUP 12, SUP 13
ASTM A689
HELICAL COIL SPRING / COMPRESSION SPRING
Tedrail supply the helical coil springs and compression springs for application of bogie suspension, coupler draft gear and so on.
FEATURES:
Round, Square, Rectangular taper, Flat or any special shape.
Wire Diameter: Up To 80 mm
Out Side Diameter: Up To 500mm
Free Height: Up To 1200mm
Others requirement per customer drawing
STANDARD
EN13298 RAILWAY APPLICATIONS - SUSPENSIONS COMPONENTS - HELICAL SUSPENTIONS SPRINGS,STEEL
UIC 822 TECHNICAL SPECIFICATION FOR THE SUPPLY OF HELICAL COMPRESSION SPRING,HOT OR COLD COILED, FOR TRACTIVE AND TRAILING STOCK
AAR M-114 HELICAL SPRING ,HEAT-TREATED STEEL
TB/T 2211 STEEL HELICAL SPRING OF SUSPENSION MECHANISM FOR ROLLING STOCK
IS:4454 STEEL WIRE FOR MECHANICAL SPRING -SPECIFICATION
STANDARD PRODUCT
TEDRAIL could supply AAR standard truck spring products as followings:
| p/n | Spring Type | Outside Diameter | Solid Height | Free Height | Capacity (lbs) | Scrap Free Height | Weight (lbs) |
| D7 INNER | Side Spring | 3.50 | 6.56 | 10.75 | 4108 | 10.00 | 8.08 |
| D7 OUTER | Side Spring | 5.50 | 6.56 | 10.81 | 8642 | 10.00 | 19.53 |
| D2 INNER | Primary Suspension Load Spring | 2.94 | 6.63 | 8.25 | 5386 | 7.94 | 7.03 |
| D2 OUTER | Primary Suspension Load Spring | 5.50 | 6.63 | 8.25 | 15959 | 7.94 | 23.76 |
| D3 INNER | Primary Suspension Load Spring | 3.25 | 6.56 | 9.06 | 4299 | 8.63 | 7.66 |
| D3 OUTER | Primary Suspension Load Spring | 5.50 | 6.56 | 9.06 | 10721 | 8.63 | 21.33 |
| D4 INNER | Primary Suspension Load Spring | 3.38 | 6.56 | 9.63 | 3433 | 9.06 | 7.75 |
| D4 OUTER | Primary Suspension Load Spring | 5.50 | 6.56 | 9.63 | 9128 | 9.06 | 20.24 |
| D5 INNER | Primary Suspension Load Spring | 3.38 | 6.56 | 10.31 | 4204 | 9.63 | 7.82 |
| D5 OUTER | Primary Suspension Load Spring | 5.50 | 6.56 | 10.25 | 8266 | 9.63 | 19.6 |
| D6 INNER | Primary Suspension Load Spring | 3.44 | 6.56 | 9.94 | 4707 | 9.31 | 8.28 |
| D6A INNER | Primary Suspension Load Spring | 2.00 | 5.69 | 9.00 | 1536 | 8.38 | 2.5 |
Volute Spring
FEATURES:
Flat Thickness: Up to 25 mm
Flat Width: Up To 300 mm
Bore: Up To 250mm
Height: Up To 750mm
Other requirement per drawing
PARABOLIC LEAF SPRINGS
FEATURES:
Flat Thickness: Up to 25 mm
Flat Width: Up To 300 mm
Other requirement per drawing
PAINTING AND COATING :
Synthetic Enamel Paint, Powder Coating, Phosphate, Zinc Coating etc.
