W21 Tension Clamp Fastening System
- Commodity name： W21 Tension Clamp Fastening System
- Description
-
W21 Rail Fastening System Specification
The W 21 system for conventional rail offers the same elasticity than the already approved W14. However, the tension clamp Skl21 with its fatigue strength of 2.5 mm and a deflection of 14.5 mm performs clearly more than the Skl14. For this purpose, the Skl 21 has been reinforced by a thicker wire diameter. Due to the improved characteristics of the Skl21, a highly elastic rail pad can be added in the W21 HS (High Speed) system: Perfect requirements for the load transfer in high speed tracks. The W21 system becomes increasingly popular and since 2008 it has been being used in 30 countries on a total of about 3.000 km (1.900 miles), for instance in Bulgaria, Czech Republic, Finland, Germany, Kyrgyzstan, Lithuania, Slovakia, Argentina, Algeria and Azerbaijan.
The components of the W21 fastening system:
- Tension clamp Skl21 -4 units;
- Screw spike Ss 35/Uls 7 -4 units;
- Angled Guide Plate Wfp-14K12 -4 units;
- Plastic dowel -4 units;
- Rail Pad 148/185/6- 2 units;
- Application: Light Rail System/Conventional Ballasted Line/ High-speed Lines
- Customization: Available
SKL21 Rail fastening system is suitable for pre-assembly at factory, the manufacturer will warrant that the fastener system and fasteners are comply with last version of EN 13481 standard. SKL21 Raiilway Fastener System will be C class mentioned it EN 13481-1 standard and will warrant to use safely up to 300 km/h speed.
The system can be configured according to needs concerning different rail types.
W21 Rail Fastening System Parts
Part name
Type
Material
Finish
Remark
SKL21 tension clip
Dia. 13mm
60Si2CrA, 38Si7
Plain oiled, color painting, or the other required ones.
Hardness: 42-47HRC
Fatigue test: When the clip spring deflection reaches 9.1mm and the swing deflection is 1.42mm, the fatigue life will be 5 millions cycles without breaking.
Standard: DIN17221, GB/T1222Ss35 screw spike
M24×150mm
M24 ×160mm
M24×180mmGrade 4.6: Q235
Grade 5.6: 35#
Grade 8.8: 45#Plain oiled, black oxide, galvanized, hot dip galvanized, Dacromet and sherardized
Standard: ISO898-1, UIC864-1 and NF F500-50
Plain washer
Uls7
Q235
Plain oiled, black oxide, galvanized, hot dip galvanized, Dacromet and sherardized
Standard: EN10025, EN10139
Plastic dowel
For different sizes of screw spike
HDPE, Reinforced Nylon 66 (PA66)
Black, blue, yellow, green or other color
For insert into concrete sleeper
Guide plate
UIC54, UIC60, 50kg rail, 60kg rail, and other sizes as ordered
Reinforced Nylon 66 (PA66)
Black, blue, yellow, green or other color
Different designs are available.
Rail pad
UIC54,UIC60, and size as ordered
EVA, or rubber
Black, blue, yellow, green or other color
Different designs are available
We welcome your inquiry or order for the SKL21 fastening systems.
Company Information
Kunshan Alex Railway Fastening Co.,Ltd has been manufacturing fastenings at its purpose-built factory near Shanghai for nearly 10 years and now produces 25 different types for a wide range of railway applications.
We began production of the first railway fastening in 2014, with production license of Chinese railway Ministry, advanced technology, high precision inspection instruments and service, our products have been widely exported the USA, Germany, Spain, Japan, Australia, Italy, Netherlands, Belgium, Poland, the UK, India, and South Africa etc.
Thanks for our customers trust and that encourages us to keep constantly developing new products and investigating new methods of quality improvement. We produced the SKL14 clip at first, and the SKL1 clip this year. E2009, E2055, E1809, are our experiecned railway fastening systems, and we also manufactured crane rail clip fixing sets for A55 ~A120 , QU70,QU80,QU100,QU120......
We can provide products according to customers drawings and samples.Our main products are as following:
1. Screw spike/Coach screw/Drive screw/Sleeper Screw, Dog spike/Railroad spike/Lock spike/Cut spike,etc.
2. Rail clip/ Tension clamp/ E clip/ PR clip/SKL clip/ DE clip/ RN Clip/ Nabla clip, etc
3. Swivel Bolts/ Track Bolt/ Special bolts/ U bolts/ J bolts/ Anchor bolts/Hook bolts / Foundation bolts/ Stud bolts/ Rod bolts/ Curved bolts/ Tunnel bolts
4. Tie plate/ Base plate / Rail plate/ Rail fixing base/ Rail Pads/ Sole plate/ Sole pad
5. Fish plate / Joint bar / Rail joint/ Splice Bar
6. Track bolt/ T bolt / Rail bolt/ Clamp bolt/ Inserted bolt/ Clip bolt/ Fish bolt/ Square bolt/ Rod bolt /Rail joint bolt
7. Clamp plate/ Rail spring clamp/ Anchor plate/ Steel clip
8. Rail Shoulder/ Rail sleeper Inserts/ Rail Anchors for rail sleepers
9. Plastic dowel / Guide plate/ Nylon insert / Rail insulator
10. Rail pad (Rubber, EVA, TPU, etc.)/ Rail sole plate / Rail adjustment pad
11. Forged or casted rail car spare parts, such as: Pivot Pin, Brake Shoe Key, Brake shoe holder, Friction Wedge, Wearing Plate, Composite Brake Shoe, Disc brake pad, Brake Beam, Load springs, etc.
Our core competencies are aligned with the current and future needs of our customers.
Key words:
Railway fastening system
Product Center
We are a professional manufacturer of railway and train bogie accessories, providing various railway custrction and maintenance parts, train bogie & brake system parts, and tunnle & crane rail customized parts.
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