The Roller Expander Bearing expands outward to create a controlled grip inside the injector sleeve during service operations. It allows the sleeve to be held firmly without slipping while force is applied. Providing consistent internal pressure helps reduce uneven force application that may affect surrounding engine components. Controlled grip and release improve service accuracy and help maintain correct injector bore conditions.Attributes:• Helps prevent sleeve movement during extraction operations.• Reduces risk of sleeve distortion during removal tasks.• Supports safe application of pulling or pressing force.Applications: The Roller Expander Bearing is used inside injector sleeves during service work, where it expands to grip the sleeve, allowing controlled removal and accurate installation without damaging the bore area.