FingerTech S3M Timing Belt 120mm, 40T, 4mm width

Timing pulleys and belts are the best way to transmit power from your motor to drive wheels or a spinning weapon.While O-Rings and round belts will slip under tension, timing belts have teeth that ensure a positive lock to the pulleys.A range of thirty-two belt sizes allows you to design your robot then pick a belt, rather than the other way around!Use with FingerTech S3M pulleys, or any other 3mm pitch pulley.•S3M pitch (3mm high-torque)•Width: 4mm•Circumferences: 120mm (40T) - 408mm (136T).Try our Pulley-Belt Distance Calculator!  Pick from our available pulley and belt sizes and it will tell you how far apart they will be, OR plug in your desired distance and it will tell you which belt to use!   Pitch (distance between tooth centers): 3mmWidth: 4mmMaterial: Chloroprene Rubber with Fiberglass reinforcementTensile strength: 19-25MPaMax load: 360 NewtonsWeight (smallest to largest): 1 - 4g (0.04 - 0.14oz)Circumference, # of Teeth: 120mm, 40T129mm, 43T144mm, 48T150mm, 50T165mm, 55