Core Functions Of Rail Insulator in Railway Fastening

Sep 19, 2025 Leave a message

Insulator is one of the core components in the railway fastener system. It is mainly used to fix the position of the rail, adjust the gauge and transmit lateral force. It also has insulation function. Its design directly affects the geometric stability, safety and maintenance efficiency of the track.

 

rail fastening

 

Core functions of Insulator

 

1. Gauge adjustment:

 

By replacing Insulators of different thicknesses or adjusting their installation positions, the gauge of the rail can be precisely controlled.

 

2. Transmission of lateral force:

 

Transmit the lateral force generated by the train to the sleeper or the ballast to prevent the rail from rolling over or shifting.

 

3. Insulation protection:

 

Block the current path between the rail and the sleeper to ensure the insulation safety of the electrified railway.

 

rail fasteners

 

4. Environmental adaptability:

 

Through salt spray test and weather resistance test, it can adapt to harsh environments such as high cold, hot and humid, and coastal salt spray.

 

5. Convenient maintenance:

 

The insulator and the fastener system are fixed by slot or bolt, and can be replaced without disassembling the rail, which greatly shortens the maintenance time.

 

TechnicalSpecificationsof Insulator

 

rail clip

 

Name

Rail Insulator, Railway insulation, Railroad insulator, Track nylon insulator, Rail insulating liner

Material

PA6+30%GF,PA66+30%GF

Standard Reference

UIC60,UIC54,Wfp14k-12

Application

60kg (UIC) rail, 52kg rail, 136RE Rail, 90R, 75R, 50R, 60R etc

General color

white, dark brown and black

Packing

Normal export packing, European standard pallet or as per customer's requirements

 

Technical Parameter

Range

Unit

Actual

Density

1.3-1.45

g/cm

1.45

Tensile Strength

≥170

Mpa

178

Elongation

≤4.4

%

4.0

Bending Strength

≥250

Mpa

290

Impact Strength

≥80

KJ/㎡

85

Melting Point

250-270

270

Insulation Resistance

≥1×108

Ω

5×108

Hardness

≥110

HRR

118

 

GNEE RAIL also offers different kinds of railway fasteners to meet client's requirements, such as Elastic Rail Clip and Clamp, Rail Screw Spike, Plastic Dowel, High Tensile Track Bolt with Nut, Rail Base(Tie) Plate, Rail Fish Plate, Railway Shoulder(Insert), Fish Bolt, Railroad Rubber and EVA Pad, etc. Samples and drawings provided by customer, we will manufacture qualified products accordingly.

 

Click here to obtain the detailed product catalog of GNEE RAIL.