H-Liner® S
HEF Polymer bushings are the result of intensive research and development in the field of self-lubricated and zero-maintenance bearings. These polymer bushings are of woven structure, and made of PTFE and epoxy resin providing tensile strength that is vastly superior to injection molded polymer bushings – and vastly more resistant to high loads, seizure and galling.
They are well-suited to rotation and oscillation applications, and high-speeds. High-load polymer bushings from HEF are chemically inert, and have low water absorption. Their maximum working temperature range is up to 320°F (160°C).
The woven material of H-Liner® S is composed of a friction layer backed on a high mechanical resistance composite structure. The technical characteristics are much higher than extruded plastics and don’t require any greasing.
Material Properties
- Type: Composite
- Water Absorption (24h): 0.16%
- Housing: h7/h8 (0.000984/+0.001535 in)
- Shaft Tolerances: h7/h8 (0.000984/+0.001535)
- Optimal Shaft Roughness: Ra < 0.2 – 0.6 µm (Ra < 7.87 - 23.62 µin)
Temp. Ratings
- Low Temp: -40°C (-40 °F)
- Max Temp: 130°C (266°F)
- CTE: 7 E-6 /°K (3.89E-06 /°F)
Performance Limits
- Dynamic Load: 140 N/mm2 (20,305psi)
- Max Speed: 0.5 m/s (1.64 ft/s)
Applications
Recommended applications include, but are not limited to the following:
- Airport Ground Equipment
- Car Carriers
- Chains
- Dozer Blades
- Elevated Cabins
- Front Axles
- Harvesters
- Lifting Hooks
- Lifting Platforms
- Scissor Lifts
- Sterilizers
- Strip-Stills
- Tailgates
- Tillage Equipment
- Trailers
- Trucks Cranes
Industries
This bushing is a popular solution for the following industries:
- Agriculture
- Handling
- Train
Advantages
Advantages include, but are not limited to the following:
- Chemical Resistant
- Corrosion Resistant
- Insulating Material
- Maintenance Free
- Misalignment Accommodation
- Noise Reduction
- Weight Reduction