Rail Fastening Systems - Rail Fastening Systems - Suzhou HuiBo Railway Fastener Co.,Ltd

Rail Fastening Systems


E-clip Rail Fastening System	Quantity/Set	Raw Material	Size	Remark
E clip	2	60Si2MnA, 60Si2CrA	Dia. 16mm,18mm or 20mm (E1809, E2006,E2007,E2009,etc)	Hardness: 44-48HRC
				Toe Load: Dia.16mm: 500-700kgf; Dia.18mm:750-900kgf; Dia.20mm:1100-1400kgf
				Fatigue life: 5 millions cycles without breaking
				Standard: DIN17221, BS970, GB/T1222
Shoulder	2	QT500-7, QT450-10	For UIC54, UIC60, 115RE, BS80lbs, BS100lbs, 50kg rail, 60kg rail, etc.	Note: Hardness of E-clip is 44-48HRC; Toe Load for E-clip is 500-700kgf (Dia.16mm); 750-900kgf(Dia.18mm); 1100-1400kgf(Dia.20mm); Fatigue life of E-clip is 5 millions cycles without breaking DIN17221, BS970, GB/T1222 ualified E-clip
Rail pad	1	HDPE, Rubber or EVA
Insulator	2	Reinforced Nylon 66 (PA66)


SKL Clip Rail Fastening System	SKL Tension Clip	Ss35 Screw Spike	Ss35 Screw Spike	Plastic Dowel	Guide Plate	Rail Pad
Quantity/Set	2	2	2	2	2	1
Raw Material	60Si2CrA, 60Si2CrA, 38Si7	Grade 4.6: Q235; Grade 5.6: 35# Grade 8.8: 45#	Q235	HDPE, Reinforced Nylon 66 (PA66)	Reinforced Nylon 66 (PA66)	EVA, or rubber
Size	Skl1,Skl3, Skl12,Skl14	M24×150mm	Uls7	For different sizes of screw spike	UIC54, UIC60, 50kg rail, 60kg rail, and other sizes as ordered	N/A
Remarks	Hardness:42-47HRC 5 millions cycles without breaking Standard: DIN17221, GB/T1222	Standard: ISO898-1, UIC864-1, NF F500-50	Standard: EN10025, EN10139	To insert into concrete sleeper	Customized products available.


Nabla Clip Rail Fastening System	Nabla Clip	Insulator	Screw Spike	Spring Washer
Quantity/Set	2	2	2	2
Raw Material	60Si2MnA, 60Si2CrA	Reinforced Nylon 66 (PA66)	Grade5.6:35#	ML08AI
Size	4mm or 4.5mm thicker	N/A	UIC54,UIC60,50kg rail,60kg rail	18.25x34x78mm
Remarks	Hardness:42-47HRC 3 million times without breaking; Application for different rail type	Density:1.3-1.45g/cm3 Tensile strength:≥170Mpa Elongation:≤4.4% Bending Strength:≥250Mpa Impact Strength(No gap):≥80KJ/m2 Melting point:250-270℃ Insultion resistance:≥1X108Ω Glass fiber content:30-35% Hardness:≥110HRR	Tensile strength:≥500Mpa Yield strength:≥300Mpa Elongation:≥20% Cold bending:90 degree without crack	Chemical composition(%): C:0.05-0.10, Mn:0.30-0.60, Si:≤0.1, Cr:≤0.2, P:≤0.035, :≤0.035


KPO Clamp Rail Fastening System	KPO Clip	Screw Spike	HS Bolt	Hex Nut	Double Spring Washer	Base Plate
Quantity/Set	2	2	4	2	2	1
Raw Material	Q235	Grade 4.6: Q235 Grade 5.6: 35# Grade 8.8: 45#	Grade4.6: Q235 Grade5.6: 35# Grade8.8: 45#	Grade 5: 35# Grade 8: 45#	65Mn	Casting iron QT500-7, QT450-10, or forging low carbon steel or high carbon steel;
Types	KPO3, KPO6, KPO9	M24×150mm M24 ×160mm M24 ×180mm	HS26, HS32	As ordered	As ordered	UIC54,UIC60, 50kg rail, 60kg rail,S49 in ordered size
Remarks	Standard: DIN5906	Standard: ISO898-1, UIC864-1, NF F500-50	Diameter: 22mm or 24mm. Length: 55mm, 65mm, 75mm, 90mm	Standard: DIN985	Standard: UIC864-3	Standard: UIC864-6

Rail Fastening System

A rail fastening system is used to fix rails to railway sleeper or railroad ties, which is usually consisted of rail anchors, rail tie plates, chairs, fasteners, spikes, screws, bolts, etc. The selection of a fastening system must be made with utmost care for rail road safety can’t be compromised.

Types of Fastenings

Various types of fastenings have been developed to meet the requirements of railway development. Namely, there are fastening with rail spike with base plate above the tie, E-clip Fastening, Pandrol Fast Clip Fastening, Tension Clamp Fastening, Bolt Clamp Fastening,Tack Joint and Chairs Fastening, and Steel Spring Keyed rail in Chair Fastening, the name of which may vary with locations, and the picture of the various of rail fastening system are shown as follow:


Rail spike fastening	Bolt clamped fastening	Fastclip fastening	Steel spring keyed rail in chair

E-Clip fastening	Track joint and chairs	Tension clamp fastening	Nabla Clip fastening

Fastening Design Criteria

A resilient fastening has its own features, such as, the spring/clip holding the rail to the railroad sleeper, the shoulder/anchor holding the clip, an insulator and a rail pad separating the rail from the railroad sleeper. As for the four features, there are strict criteria stipulated to ensure the fastening effect.

A) . Rail clamping force

Clamping forces may vary with the fastening system and customer requirements. Generally, most fastening systems offer a clamping force per clip between 7.5 to 12.5 kN with deflections of the clips toe between 10 and 15mm. According to European standards, the minimum force to push the rail through the fastening system of 7kN is for most main line tracks and 9 kN for high speed rail and heavy freight lines, which suggests that a nominal clamping force per clip of 8.5kN at minimal for mixed traffic line and 10 kN for the more severe applications.

B). Shoulder/ anchor

The shoulder/anchor has a very important role in fastening system. The shoulder/anchor has to be able to withstand the impact of loads and vibration transmitted to the sleeper without breaking the sleeper or getting loose. The European standard requires that all the elements of fastening should be capable to withstand a 60kN pullout force with doing no harm to the sleeper.

C). Insulator

The shoulder/anchor has a very important role in fastening system. The shoulder/anchor has to be able to withstand the impact of loads and vibration transmitted to the sleeper without breaking the sleeper or getting loose. The European standard requires that all the elements of fastening should be capable to withstand a 60kN pullout force with doing no harm to the sleeper.

D).Rail pads

The function of rail pads is to spread the load from the rail to the railroad sleeper and to attenuate the loads impact from bad joints, track irregularities and faults in rolling stock. The railroad pad is usually made of rubber, of 10 mm thick, or is a plastic such as EVA between 5 mm and 10 mm thick. The stiffness of the pad is typically in the rang 40-450 kN/mm, and the 5 mm plastic pad can offer stiffness as high up to 6000 kN/mm. Low stiffness railroad pads are not recommended for use in curves sharper than about 400m radius.

HuiBo Railway has a strong ability to design kinds of the Rail fastening systems according to clients' different requirements in actual railway constructions . our technical team have more than 20 years of rail fastening development experience ,guaranteed the best solutions for the different railroad projects at home and abroad !