Tafcan Consulting Limited
Canada FlagDesigned and manufactured in Canada

Zafety Lug Lock®

Railinklock System installed on a rail joint bar

Product Information

Railinklock System™

Product Information

Railinklock System™ creates resistance between two joint or frog bar nuts minimizing their ability to move or rotate and thereby maintain clamping pressure on the joint or frog bar; it also simplifies the process of inspecting as they are visible and torque checks can be completed without removing the units in many situations.

Railinklock units are made of a resilient plastic capable of withstanding rigorous environmental conditions and feature a ribbon shaped central section and a wider round section located at each end of the ribbon shaped central section. The ribbon shaped central section (smaller on the frog units) is generally in the shape of an arc, smooth on the front but with reinforcing ribs on the back creating a semi-rigid section that can be bent, twisted or flexed, to a certain degree during installation, but remains sufficiently rigid during use to prevent the nuts from moving once they are installed. The size and shape of the arc is dictated by the distance between the nuts. The openings have a series of teeth which are adapted and beveled in such a way to make it easier to be fitted around the shoulders of a rail bolt nut so as to provide a friction fit. The farther down the nut the unit is pushed the tighter the friction fit will be.

Patent Pending Tafcan Consulting Ltd. & LDM Associates Limited

Designed, Engineered and Manufactured In North America

Railinklock System unit installed on Standard Rail
Standard Rail
Railinklock System unit installed on Electrified Rail
Electrified Rail
Standard RailElectrified Rail

Railinklock System is applicable for both standard & electrified rail – only specified products may be used on electrified rail.

Material Selection

Standard Rail Material Description

The plastic material is based on previous experience with the Zafety Lug Lock® product and was developed working in conjunction with our plastic design engineers. The design engineered plastic is similar to products developed for the automotive industry to resist many types of industrial chemicals, oils and solvents (see Chart 1.) and environmental conditions. Generally, the material used will create a final product that has mechanical and physical properties such as exceptional toughness and resilience, high resistance to creep, impact and flex fatigue, flexibility at low temperatures and good retention of properties at elevated temperatures. Specialty engineering resin is designed to perform in temperature conditions of -40°C (-40°F) to 85°C (185°F). Special grades include heat stabilized, flame retardant and extrusion grades. Material includes UV protection additives, and heat stabilizers flame retardants. It has nominal durometer hardness of 44D. This resin has been proven to be effective when used in demanding applications in the automotive, fluid power, electrical/electronic, consumer goods, appliance and power tool, sporting goods, furniture, industrial and off-road transportation/equipment industry.

The Railinklock System™ raw material has additional UV resistance and the formulation was developed to deter ingestion by small animals and rodents.

The colour choice of black was specifically selected to blend in with track surroundings to minimize any curiosity or desire to remove them by unauthorized persons.

A Manufacturer's five (5)-year warranty covers any manufacturing defects however, because of the specialized plastic composition it is expected to have a lifespan of 10+ years.

Electrified Rail Material Description

With a need identified for Electrified Rail it was important to upgrade the material to include additional properties ensuring the material had increased flame-retardant properties and was antidrip to meet the requirement of UL94 V-0. In addition to the properties and capabilities of the Standard Rail material the resin used for Electrified Rail is a medium modulus flame retardant and antidrip that meets the requirement of UL94 V-0.

The electrified rail product also carries a Manufacturer's five (5)-year warranty covers any manufacturing defects however, because of the specialized plastic composition it is expected to have a lifespan of 10+ years.

Key Benefits

  • Creates resistance between two joint or frog bar nuts, minimizing their ability to move or rotate and maintaining clamping pressure on the joint or frog bar
  • Simplifies inspection — units are visible and torque checks can be completed without removing them in many situations
  • Applicable for both standard and electrified rail — only specified products may be used on electrified rail
  • Resilient engineered plastic withstands rigorous environmental conditions and resists industrial chemicals, oils and solvents
  • Performs from -40°C (-40°F) to 85°C (185°F) with UV protection additives and a nominal durometer hardness of 44D
  • Black colour blends in with track surroundings and the formulation deters ingestion by small animals and rodents
  • Manufacturer's five (5)-year warranty against manufacturing defects with an expected lifespan of 10+ years

Part Numbers & Track Sizes

This table provides a listing of the current part sizes available. Custom sizes are available if required in sufficient quantities.

DescriptionStandard Rail (Non-Electrified)Electrified Rail
Joint bar 11-inch spacing square nut size 41 mm (1 5/8 inches)SRJ11-SQ41ERJ11-SQ41
Joint bar 12-inch spacing square nut size 41 mm (1 5/8 inches)SRJ12-SQ41ERJ12-SQ41
Joint bar 12-inch spacing square nut size 44 mm (1 3/4 inches)SRJ12-SQ44ERJ12-SQ44
Joint bar 13-inch spacing square nut size 41 mm (1 5/8 inches)SRJ13-SQ41ERJ13-SQ41
Frog bar 5 ¼-inch spacing square nut size 54 mm (2.14 inches)SRF5-SQ54ERF5-SQ54
Frog bar 5 ¼-inch spacing hexagonal nut size 54 mm (2.125 inches)SRF5-HX54ERF5-HX54

Railinklock System™ simplifies the process of inspecting – torque checks can be completed without removing the units.

Product Pictures and Sizes

Railinklock System™ units in service on 2-foot and 3-foot joint bars and frog bars. Click any photo to enlarge, or watch the Railinklock System™ video.

Unit Configurations

Joint Bar Units

Railinklock System joint bar units sizing chart

Frog Bar Units

Railinklock System frog bar units sizing chart

Downloadable Resources

Download the Railinklock System™ product flyer, measuring instructions, and installation & removal instructions.

Ready to Get Started?

Contact us to discuss your rail joint and frog bar requirements, or download the product flyer for more information.