Bearing Pads

Description

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Introduction

Rainbow Rubber Industry has over 60 years of experience in manufacturing high‑quality bearing pads for construction projects worldwide. We design our bearing pads to deliver strength, safety, and long‑term performance. As a result, engineers and contractors trust our products for bridges, flyovers, and buildings.

Moreover, our advanced technology and skilled production team ensure consistent quality in every bearing pad we produce.

Characteristics

Rainbow Elastomeric Bearing Pads use synthetic neoprene (CR) or natural rubber (NR) combined with high‑grade raw materials. We manufacture these pads under controlled heat and pressure to meet AASHTO M251 specifications.

Because of this precise process, our bearing pads offer:

• Long service life

• Zero maintenance requirement

• Excellent load‑bearing capacity

Main Features

Rainbow Elastomeric Bearings consist of vulcanized elastomeric blocks reinforced with high‑strength steel plates. We fully enclose the steel plates inside premium elastomer, which prevents corrosion and eliminates maintenance needs.

In addition, the rubber resists:

• Ageing

• Ozone exposure

• UV radiation

• Extreme weather conditions

We use ASTM‑approved steel plates, which further increases durability and safety.

Fields of Application

These bearing pads perform reliably in bridges, flyovers, and buildings. They operate efficiently between ‑40°C and +50°C, while short exposure up to +70°C causes no damage.

Furthermore, Rainbow Elastomeric Bearings absorb:

• Horizontal movement

• Rotational forces

• Structural vibrations

As a result, they safely transfer loads between structural components.

Plain Bearing

Plain Elastomeric Bearings work best when load, rotation, and expansion requirements remain low. We manufacture them from neoprene or natural rubber and cut them to size or mold them individually.

Therefore, they suit projects that require simple and cost‑effective solutions.

Plain Bearing with External Steel Plate

We vulcanize two external steel plates directly onto the bearing pad. This method allows secure anchoring and reduces the risk of slipping.

Type PBf – Fixed in All Directions

This type restrains all movement and handles high vertical and horizontal loads efficiently.

Type PBe – Fixed in One Direction

When structures face higher directional forces, we recommend Type PBe for added stability.

Type PBa – Free in All Directions

This sliding bearing uses a PTFE (Teflon) layer to minimize friction. Consequently, it allows smooth movement while carrying heavy vertical loads.

Laminated Bearing

Laminated Elastomeric Bearings include internal steel plates that improve vertical load performance. We custom‑mold these bearings to meet specific project requirements.

Because of their layered structure, they deliver controlled deflection and higher strength.

Laminated Bearing with External Steel Plates

These bearings include external steel plates for mechanical anchoring and extra safety.

Type LBf – Fixed in All Directions

This type prevents unwanted movement and supports heavy structural loads.

Type LBe – Fixed in One Direction

When directional force control matters, Type LBe provides the required restraint.

Type LBa – Free in All Directions

This sliding bearing combines PTFE sheets and stainless steel to ensure smooth movement with minimal friction.