This is the Futaba S3003 standard servo. This basic servo is used in cars, boats, or where standard servos are used. This is the replacement for the following servos, S138, S148, S22, S38 and S12.
This servo can produce high-current draw from your batteries. If using NiMH or LiPo batteries, make sure they are capable of delivering sufficient amps.
Speed: 0.23 sec/60° @ 4.8V and 0.19 sec/60° @ 6V
Torque: 44oz-in (3.2 kg-cm) @ 4.8V and 57oz-in (4.1 kg-cm) @ 6V
Dimensions: 1.6x0.8x1.4 (1-9/16x13/16x1-7/16)(40 x 20 x 36mm)
Weight: 1.3oz (1-5/16oz) (37g)
Connector: J type with approx. 5 lead