Herculon Modified Type D Bearings (HLMD)
Bearing Pads
Herculon Modified Type D Bearings (HLMD)
Herculon Modified Type D (HLMD) Bearings have been developed to fulfil the need for a simple, low friction, highly stressed bearing on corbels and columns where a continuous slipjoint is inappropriate. They can be used under cast in-situ and post-tensioned slabs and beams.
Materials
Consist of a stainless steel top plate roughened on the upper surface and polished on the lower. This steel plate slides against a Hercuflon coated Hercupad.
Fig 2-4
Types
There are two basic types of HLMD bearings available:
• Standard
• Seismic
The seismic bearings are manufactured from the same materials as the standard bearings, but they have greater all round expansion capacity (±50 mm) to accommodate the larger movements which occur during seismic shock.
Design
Coefficient of friction: 0.05
Expansion capacity: ±20 (standard) to ±50 (seismic) mm
Maximum contact stress: 10 MPa
Maximum temperature: 80°C
Maximum rotation: up to 0.02 radians
*Non standard bearings can be manufactured to accommodate larger expansions and differing rotations.
Installation
Fig 2-5 shows a HLMD bearing being cast into an in-situ roof slab.
Fig 2-5
ORDERING
Table 2-3 (standard) and Table 2-4 (seismic) detail the range of sizes that are available.
Figure 2-6 provides the dimension reference points reflected in the tables.
Fig 2-3
Our Services
Design
We serve as technical liaisons with consulting engineers and builders at the design stage of a project. Provision of detailed specifications, calculations and feedback on drawings for project specific applications.
Manufacturing
All products in the Hercules™ range are manufactured and tested in compliance with the relevant standards: AS5100.4:2017, BS5400, AASTHO and MS ISO 9001.
Technical Support
We provide detailed installation guidance that is specific to each project and site conditions. Remote and/or on-site assistance provided by via comprehensive data sheets and trained personnel where appropriate.
Custom Solutions
Our capabilities include providing tailored solutions to challenging engineering scenarios, where conventional methods of design, manufacturing and installation may not be suitable.
Design
We serve as technical liaisons with consulting engineers and builders at the design stage of a project. Provision of detailed specifications, calculations and feedback on drawings for project specific applications.
Manufacturing
All products in the Hercules™ range are manufactured and tested in compliance with the relevant standards: AS5100.4:2017, BS5400, AASTHO and MS ISO 9001.
Technical Support
We provide detailed installation guidance that is specific to each project and site conditions. Remote and/or on-site assistance provided by via comprehensive data sheets and trained personnel where appropriate.
Custom Solutions
Our capabilities include providing tailored solutions to challenging engineering scenarios, where conventional methods of design, manufacturing and installation may not be suitable.
