Caster fork bearings reside in the top of the wheelchair fork. This allows the fork to swivel the caster wheel from side to side. Having a bad caster fork bearing means extra effort when trying to push and maneuver the wheelchair. At DME Hub you'll find all wheelchair fork bearings are in stock and ready to ship. Need help sizing them? Call our team of experts at 855-339-5155 or email us at info@dmehub.net.