Martin Sprocket & Gear 4040-3 taper lock bushing is a mounting component that fits with taper-lock hubs to attach a sprocket or pulley to a shaft. With the 4040-3 designation, this bushing enables a secure drive connection when paired with a compatible hub and tightened screws in power transmission assemblies. This part belongs to the Martin taper-lock family and is used in applications where a removable, shaft-mounted pulley or sprocket is required.
