T5 Timing Belt Pulley 10-60T Synchronous Wheel Without Steps for 15mm Width Belt

The tooth count determines the pitch diameter of the pulley, which directly affects your drive ratio and linear speed. A smaller tooth count (e.g., 10T–16T) gives a smaller pulley diameter and is typically used on the motor shaft for speed reduction. A larger tooth count (e.g., 30T–60T) is used on the driven shaft. Divide the driven tooth count by the drive tooth count to get your reduction ratio. For linear motion (CNC, 3D printers), multiply the pitch (5 mm) by the tooth count to get the belt travel per revolution.

Match the bore diameter to your motor shaft OD. Common stepper motor shaft sizes are 5 mm (NEMA 17 standard), 6.35 mm (1/4 in, common on NEMA 23), and 8 mm (larger NEMA 23/34). Servo motors often use 8 mm, 10 mm, or 12 mm shafts. If your shaft has a flat (D-cut), you will need to add a set screw or use a shaft collar after installation, as these pulleys do not include a set screw by default — confirm with the variant listing.

Aluminum alloy T5 pulleys are widely used in desktop CNC routers, laser cutters, and light industrial automation running continuous duty cycles. The T5 profile provides positive engagement that resists slip under moderate tangential loads. For heavy-duty applications with high belt tension or shock loads, verify that the aluminum bore wall thickness is sufficient for your bore size and tooth count combination — larger bores on small tooth-count pulleys leave less material around the bore.

The aluminum alloy construction with anodized finish provides good resistance to oxidation and light moisture exposure typical of indoor workshop environments. Anodizing creates a hard oxide layer that protects the base metal. For outdoor or high-humidity environments, periodic inspection is recommended. Avoid prolonged contact with alkaline or acidic cleaning agents that can attack the anodized layer.

Yes. The T5 profile is an internationally standardized trapezoidal tooth form (5 mm pitch, 2.2 mm tooth height, 50° included angle). These pulleys are compatible with any T5-profile timing belt — open-ended or closed-loop — from any supplier that manufactures to the T5 standard. Ensure the belt width is 15 mm to match the 16 mm tooth width of these pulleys.

A flanged pulley has raised lips (flanges) on one or both sides of the tooth face that help keep the belt centered on the pulley. A stepless (no-flange) pulley has a clean, flat profile with no retaining lips. Stepless pulleys are preferred when the belt path changes direction, when space is tight, or when the belt is guided by other means (e.g., idler flanges). If your system has no other belt-tracking mechanism, consider pairing one flanged pulley with one stepless pulley in the drive pair to guide the belt without over-constraining it.

Yes. T5 pulleys are used in some 3D printer designs, particularly older Cartesian and CoreXY machines that use T5 belts. Verify your printer's belt specification before ordering — many modern printers use GT2 (2 mm pitch) belts, which are not compatible with T5 pulleys. If your printer uses T5 belts, select the tooth count and bore diameter that match your motor shaft and existing drive geometry.