SKF
Track Pin Seals
SKF track pin seals are heavy-duty rotary seals designed specifically for the track link joints of tracked undercarriages on excavators, bulldozers, and other tracked earthmoving equipment. These seals retain lubricant in the track pin bearing and prevent the ingress of abrasive soil, sand, water, and mud. They are extremely robust, featuring a metal face seal ring with a rubber load ring that maintains contact pressure despite angular misalignment and immense shock loads. SKF supplies track pin seals as matched pairs in standard sizes for most major equipment makes. Their reliability directly affects undercarriage life, which is one of the highest maintenance costs for tracked machinery. By choosing high-quality SKF track pin seals, equipment owners reduce pin and bushing wear, extend track maintenance intervals, and lower operating cost per hour.
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Trusted by Industry Leaders
Extreme Durability
Forged metal rings and robust elastomers withstand high contact pressures.
Seals Against Abrasive Soil
Keeps out the harshest contaminants in earthmoving.
Long Interval Between Pin Turns
Retains lubricant effectively, extending bushing life.
Interchangeable Sizes
Drop-in replacements for common undercarriage standards.
Tolerates Angular Misalignment
Maintains contact under track flexing and frame twist.
Cost per Hour Reduction
Longer track life directly lowers total cost of ownership.
How Track Pin Seals Extend Undercarriage Life
Lubricated track pins rely on a seal at each end to keep oil in and dirt out. When the seal fails, the pin and bushing run dry and wear rapidly, requiring costly track overhaul. SKF’s high-integrity seals resist rock damage and maintain their oil film over thousands of hours, delaying the need for major undercarriage service.
Installation Best Practices for Track Pin Seals
Track pin seals are pressed into the counterbore of the track link and seated against the bushing face. Proper alignment and controlled press force are critical. SKF provides installation instructions and tooling guidance to ensure the seal lip is not damaged during assembly, guaranteeing full performance.