Bearings made of rubber, polychloroprene and iron sheet. Depending on the Client’s requirements, they vary in dimensions, thickness and number of sheets included. There are coated on all sides with elastomeric material with a minimum thickness of 0.09” (2.5 mm), thus preventing corrosion of the metal inside. They are called LASTO BLOCK TYPE.

They are easily installed and do not require maintenance. These bearings meet the specifications of ASTM standards. We design and develop bearings upon request, according to our Client’s drawings and specifications.

They are manufactured in various dimensions, as specified by the part designer of the requesting Client, and built with metallic inserts of different qualities.

These bearings meet the characteristics specified in the ASTM standards listed below:

• Shore A Hardness: 60 + 5
• Tensile Strength: 175 KgF/mm²
• Elongation at Break: 630 %
• Tear Strength: 14 KgF
• Compressive Strength/Permanent Deformation: 15%
• Heat Resistance: 100 ºC (212 ºF)
• Ozone Resistance: E
• 1010 sheet or sheet with specifications (according to market availability) or stainless steel

SLIDING LASTO BLOCK TYPE: Similar to the one described above with the addition of a properly treated TEFLON top sheet, manufactured in the thickness as requested by the Client.

BEARINGS ON SLOPES: These bearings are produced to special order, generally with a 1% to 6% slope in the upper face.

SEISMIC ARRESTORS: Our seismic arrestors are pieces with similar characteristics to those of our bearings, but with a single thicker metal insert.

SPECIAL ORDERS: We produce bearings according to the Client’s production drawings and specifications. We also make bearings in other types of rubber according to requirements.

They are made of synthetic rubber with conveniently attached iron parts, to absorb the expansion and contraction movements of structures in bridge joints, elevated highways, access ramps and similar structures.

ADVANTAGES:

• They are extremely durable
• They provide continuous closure across the full width of the bridge deck
• They prevent water and chemicals in the roadway from draining between columns, flanges and other support structures
• They are easy to install and maintain
• They withstand heavy traffic
• They meet the characteristics specified in ASTM standards

TECHNICAL SPECIFICATIONS:

• Hardness A: 55 +5
• Tensile Strength: 170 KgF/mm²
• Elongation at break: 690%
• Tear Strength: 14 KgF
• Compressive Strength/Permanent Deformation: 15%
• Heat Resistance: 100 ºC (212 ºF)
• Ozone Resistance: E

AVAILABLE MODELS AND SIZES:

• Model according to Vialidad Nacional (National Road and Highway Authority in Argentina) 1000 mm x 276 mm for 2.0/0″ total movement
• Model JA 38: 1200 mm x 160 mm for 1.1/2” total movement
• Model JA 50: 1200 mm x 300 mm for 2.0/0” total movement
• Model JA 65: 1200 mm x 365 mm for 2.1/2” total movement
• Model JA 90: 1200 mm x 400 mm for 3.1/2” total movement
• Model JA 120: 1200 mm x 591 mm for 4.0/0” total movement (WW)
• Model 1300: 1200 mm x 1194 mm for 13.0/0” total movement (WW)

Type of Rubber: Polychloroprene.

Metal Inserts: Quality 1010 or as required and according to availability in place.

Made of Neoprene® and Teflon® plates.

Made of Teflon® and metal inserts.

• Dimensions: 45 mm (1.77”) x 50 mm (1.96”) section / 55 mm (2.16”) x 60 mm (2.36”) section / 60 mm (2.36”) x 65 mm (2.55”) section / 70 mm (2.75”) x 75 mm (2.95”) section / 95 mm (3.74”) x 100 mm (3.93”) section
• Line Material: EPDM
• Maximum Band Length: 12 meters (39.36 ft)
• Contact us for other dimensions and other elastomeric materials
• Minimum Quantity per Order: 200 meters (656.16 ft)