GT®2 / GT®3 Aluminum Timing Belt Pulleys

Featured Product from Stock Drive Products & Sterling Instrument - SDP/SI

Hicksville, NY -- A series of 2 mm Pitch GT®2 / GT®3 aluminum timing belt pulleys for 6 mm (.236") belts manufactured by SDP/SI (ISO 9001 + AS9100D Registered) feature the patented Fairloc® integral hub fastening design which eliminates the need for conventional separate hub clamp devices. Additionally, the choice of Fairloc® hubs offers the benefits of frequent position adjustment, while adding positive metal-to-metal fastening strength along the entire hub surface.

Identified as the A 6D51-... (Inch) and A 6D51M... (Metric) Series, these 44 GT®2 / GT®3 pulleys are made of clear anodized aluminum alloy and are available from stock in 15 to 120 grooves. Bore sizes range from .1875" to .375" in inch and 5 mm to 10 mm in metric. O. D.'s range from .356" to 2.988" in inch and 9 mm to 75.9 mm in metric. They are available in double or no-flange types. SDP/SI stocks a wide variety of other GT®2 / GT®3 size pulleys in different materials and for different belt widths.

The Fairloc® integral hub fastener consists of two slots that are machined into the hub, one radially the other angularly, to create a transverse wedge which remains attached to the solid portion of the hub on one side. The resultant cantilevered clamping section has a tapped hole to accept a cap screw which passes through a clearance hole in the solid portion of the hub, and into a threaded hole in the transverse wedge section. As the screw is tightened, the cantilevered section clamps the shaft securely. The screw can be tightened and released repeatedly without marring the shaft or affecting its torque transmitting abilities.

SDP/SI offers a wide variety of inch and metric small mechanical components for the design engineer and OEM. Standard components can easily be located and purchased in one convenient place, shop online 24/7. The engineer not only meets all his component requirements, but saves valuable time by not having to search other sources. For custom design and manufacturing, speak to our engineers at (516) 328-3300.

Quotes, online orders, and 3D CAD models are available at our estore at

SDP/SI - Stock Drive Products/Sterling Instrument, a Designatronics company
250 Duffy Avenue, Hicksville, NY 11801
Phone: (516) 328-3300; (800) 819-8900