This is the EMS Ball Bearing Conversion Kit|
For Futaba S148, S48, S138, S38, S128, and S28 servos
Designed to fit selected Futaba servos. Made of black plastic.
Replacement servo case top has built-in ball bearing.
One case top with 10x6mm ball bearing
One output arm
Length, overall: 55mm (2-1/8")
case top: 41mm (1-5/8")
Height, overall: 14mm (9/16")
case top: 12mm (1/2")
Servo arm, length: 24mm (15/16")
width: 11mm (7/16")
Hole diameter: 6.2mm (1/4")
Servo arm only has one arm with four control rod holes.
This conversion kit can be used with
Futaba S148 Servo Standard Precision (FUTM0710)