TORLON® 4301

TORLON® 4301: the versatile tribological PAI bearing grade

A PAI designed for wear and friction control

TORLON® 4301 is a polyamide‑imide grade formulated with graphite and PTFE to deliver low friction and high wear resistance while maintaining excellent mechanical strength.

Load capacity and thermal stability

The material provides up to 10× better wear resistance than unfilled PAI and maintains dimensional stability from cryogenic temperatures up to approximately 275 °C.

Versatile bearing performance

Its balanced properties make TORLON® 4301 a go‑to bearing and wear grade for high‑temperature, high‑load applications, including dry or marginally lubricated service.

Typical applications

• highly loaded bearings and bushings
• thrust washers and wear pads
• valve seats and mechanical components

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• Semi-finished product manufacturer : Drake Plastics
• Raw material supplier : Syensqo
• Minimum thermal resistance (in °C) : -196
• Maximum thermal resistance (in °C) : 280
• Mechanical resistance traction module (in MPa) : 113
• Mechanical resistance compression module (in MPa) : 5310
• Mechanical resistance constraint compression (in MPa) : 166
• Pressure-velocity limit (PV) : Medium
• Low friction and wear coefficient : Very Low
• Wear resistance : Very Good
• Electrical conductivity : Insulative
• Chemical resistance : Good
• Polymer name : Polyamideimide
• Polymer abbreviation : PAI
• Charge / Reinforcement : Graphite + PTFE
• Mechanical resistance (in MPa) : Medium
• Continuous thermal resistance (in °C) : 220