Delkor Rail
Quality Track Products, Solutions & Rail Services
www.delkorrail.com
Delkor ALT.1
Rail fastening systems for Slab Tracks
Simple, reliable and highly robust rail fastener for
maintenance-free operation.
The Delkor ALT.1 is a one-piece, highly robust rail fastener consisting of a top plate and base frame, which are durably
Vulcanised together by means of a natural rubber boot. The underside of this rubber component is specially profiled
and designed to allow movement of the top plate holding the rail. The outer frame of the ALT.1 rail fastener totally
encompasses the top plate, making the unit totally fail-safe. The ALT.1 rail fastener ensures the necessary resilience in all
six degrees of movement. This feature also reduces the dynamic stress on the anchoring elements and the base structure.
The profiled rubber on the bottom side of the ALT.1 is only exposed to compression loads, with its spring characteristic
becoming more progressive as the load increases. This avoids excessive deflections in the event of overloading the
fastener. Another feature of the ALT.1 is that the rubber boot is not subjected to any preload, which ensures resistance to
aging and provides long maintenance-free performance across a wide variety of applications.
Design features
Technical Data
• Vibration and noise attenuation
Static Stiffness (Cstat): 12 – 30 kN/mm
• Bonded one-piece unit: no wearing parts
Material: Metal Parts, SG Iron,
• Single rubber dampening element
Elastomer, Natural Rubber
• Proven fatigue life
Lateral Adjustment: Up to +/– 15 mm
• High electrical insulation
Vertical Adjustment: Up to 25mm (by packers)
• Fail-safe design
Rail Clips: Pandrol/Vossloh and others
• Maintenance-free long life performance
in excess of 30 years.
Electrical Insulation: > 1 MOhm
Vertical Deflection: Up to 3.5 mm
Ratio Cdyn, Cstat: < 1.4
Delkor Egg
Rail fastening systems for Slab Tracks
Highly resilient rail fastener for high vibration and noise
attenuation. Simple, reliable and maintenance-free.
The Delkor Egg is a highly resilient rail fastener consisting of a top plate and base frame, which are durably Vulcanised
together by means of a natural rubber collar. This achieves a low static stiffness while ensuring a high degree of rail
stability. The Egg rail fastener ensures optimum vibration and structure-borne noise reduction in six degrees of movement.
Due to the very low dynamic to static stiffness ratio, the Egg achieves a high degree of vibration and secondary noise
attenuation.
Design features
Technical Data
• High vibration and noise attenuation
Static Stiffness (Cstat): 6 – 15 kN/mm
• Very low static and dynamic stiffness
Material: Metal Parts, SG Iron,
• Dual stiffness capability
Elastomer, Natural Rubber
• Bonded one-piece unit: no wearing parts
Lateral Adjustment: Up to +/– 15 mm
• Single rubber dampening element
Vertical Adjustment: Up to 25 mm (by packers)
• Proven fatigue life
Rail Clips: Pandrol/Vossloh and others
• High electrical insulation
Electrical Insulation: > 1 MOhm
• Fail-safe design
Vertical Deflection: Up to 4.5 mm
• Maintenance-free long-life performance
in excess of 30 years
Ratio Cdyn, Cstat: < 1.4
• Low profile design available
Vibration levels before and after
installation of Delkor Eggs on rail
system under ANA Hotel, Sydney.
Vibration measurement within hotel ballroom located next to rail tunnel.
Eggs for Turnouts
Rail fastening systems for Special
Trackwork on Slab Tracks
For installation on turnouts, diamond crossings and switches.
The Egg for Turnouts was developed for the direct fixation of turnouts, crossovers, expansion joints etc. on ballastless track
to provide high vibration attenuation. The concept was for discrete elastomeric fasteners to which the turnout baseplates
can be simply fixed by means of bolts. Turnouts that are designed with bolt down baseplates, can be directly fixed to
Eggs for Turnouts using the same baseplates. A retrofit option is also available where by the Eggs can be matched drilled to
the existing turnout baseplates. To achieve this, four sizes have been developed to accommodate the turnout baseplates.
Design features
Technical Data
• High vibration and noise attenuation
Static Stiffness (Cstat): 8 to 16kN/mm
• Very low static and dynamic stiffness
Lateral Adjustment: Up to +/– 18 mm
• Bonded one-piece unit: no wearing parts
Vertical Adjustment: Up to +30 mm (by packers or shims)
• Single rubber dampening element
Electrical Insulation: 1 MOhm
• Proven fatigue life
Vertical Deflection: Up to 4.5 mm
• High electrical insulation
Ratio Cdyn, Cstat: < 1.4
• Fail-safe design
• Maintenance-free long-life performance
in excess of 30 years
• Bolt connection to turnout baseplate can be
to standard pattern or matched drilled to suit
Type
A
B
C
D
I
733
650
630
519
II
903
820
810
689
III
1043
980
940
829
IV
1163
1080
1060
949
V
1363
1283
1220
to suit
Rail Accessories
Screwspikes, Screwspike Dowels
& Spring Washers, Rail & Turnout Pads
Delkor Rail supplies an extensive range of Railway Screwspikes
and miscellaneous Rail Accessories throughout Australia and Asia.
Screwspikes
Screwspike Dowels
Manufactured to DIN ISO9002/EN29002 standards,
and meeting the requirements AS1085.18 and UIC
864-1, Delkor Screwspikes can be tailored to meet
the needs of any project.
Available in either HDPE or Nylon. Stock units include:
• HDPE 165mm and 135mm Screwspike Dowels
• Nylon 90mm Screwspike Dowels
Available in black steel or galvanized with hex,
square and rectangular heads, they include:
• Ss8 Fe6 24ø x 165mm Screwspike with retained
double helical washer
• Ss8 24ø x 165mm Screwspike
• 27ø x 165mm Screwspike for Switches
• 22ø x 150mm Screwspike
• 24ø x 145mm ‘S’ Screwspike
• 24ø x 180mm ‘R’ Screwspike
• 26ø x 190mm ‘C’ Screwspike
• Special screwspikes available on request
Ballast Mats/Impact Mats
Available in a range of types and sizes to suit various
track forms from light rail to heavy haul.
Spring Washers
Delkor Rail provides a wide range including double
and triple helical spring washers.
Stock items include:
• Fe6 25ø Double Helical Spring Washers
• Fe15 28ø Double Helical Spring Washers
Other Rail Accessory Products
• Screwspike Installation Sockets
• SGI Rail Clips
• Standard Rail Pads in HDPE or Rubber
• Special Turnout Insulation Pads in HDPE or Rubber
• Concrete Turnout ‘Jewellery’ Kits: All items required
to assemble a turnout packed in timber cratess
About Delkor Rail
Major Projects
Delkor Rail is a world leading supplier of resilient rail baseplates, with over 20 years experience in supplying technical
advice and track related products in Australia and overseas. During this time Delkor Rail has provided technical assistance
and supplied components to a number of track and turnout construction projects throughout the world. Our major
projects have included: Sydney Harbour Bridge; Lantan Airport Link, Hong Kong; Tsing Ma Bridge, Hong Kong; KCRC
Westrail; Chatswood to Epping Rail Link; Vancouver Airport Rapid Transport; Docklands Light Rail; Chatswood Transport
Interchange; Newmarket New Zealand; East Rail, Hong Kong.
Newmarket,
New Zealand
Harbour Bridge,
Sydney
Chatswood CTI
East Rail, Hong Kong
Ballast Mat
Tsing Ma Bridge,
Hong Kong
Zig Zag Tunnels,
New South Wales
For further information contact:
Delkor Rail Pty Limited, Unit R4, 391 Park Road,
PO Box 63 Regents Park NSW 2143
Tel: +61 2 8717 9200. Fax: +61 2 9644 9222.
www.delkorrail.com