HTD-5M 14-60T Timing Belt Pulleys Pitch 5mm AF-type With Keyway Teeth Width 27mm

Select the tooth count based on your desired speed ratio and available centre distance. Divide the driven shaft speed by the drive shaft speed to get your ratio, then choose a tooth-count pair that matches. For example, a 20 T drive pulley paired with a 40 T driven pulley gives a 2:1 reduction. Use the variant selector above to pick the tooth count that fits your design.

Measure your motor or gearbox output shaft diameter with a calliper. Common stepper motor shafts are 5 mm, 6.35 mm (1/4 in), 8 mm, and 10 mm; servo motors often use 10 mm, 12 mm, or 14 mm shafts. Select the bore that matches your shaft diameter exactly — the keyway provides the positive drive, so a close bore fit is important for concentricity.

Keyway dimensions follow DIN 6885 proportions: 8–10 mm bores use 3×1.4 mm; 12–14 mm bores use 4×1.8 mm; 15–17 mm bores use 5×2.3 mm; 18–22 mm bores use 6×2.8 mm; 24–30 mm bores use 8×3.3 mm. The keyway size is shown in the variant name.

Yes. These pulleys are machined to the HTD 5M tooth profile standard and are compatible with any HTD 5M open-end or closed-loop timing belt up to 27 mm wide. They are not compatible with T5, GT2, or other pitch profiles — always verify the belt pitch before ordering.

Aluminium alloy pulleys offer a good strength-to-weight ratio suitable for most CNC, 3D printing, and light-to-medium automation applications. They are significantly lighter than steel, which reduces rotational inertia and improves dynamic response. For very high-torque or heavy-duty industrial drives, steel pulleys may be more appropriate.

Aluminium alloy naturally forms a thin oxide layer that provides moderate corrosion resistance in typical indoor workshop and laboratory environments. For humid, outdoor, or chemically aggressive environments, additional surface treatment such as anodising may be advisable. Contact us to confirm the surface finish available for your chosen variant.

Yes. HTD 5M pulleys are widely used in CoreXY, Cartesian, and delta 3D printer motion systems, as well as in CO2 and diode laser cutter gantries. Verify that your belt is also HTD 5M pitch and that the belt width does not exceed 27 mm. The 14 T and 16 T variants are popular for compact motor mounts, while larger tooth counts suit idler or reduction stages.

Each order includes 1 piece as indicated by the "1Pcs" notation in the variant name. If you need multiple pulleys, simply increase the quantity in your cart or place separate orders for different tooth-count or bore combinations.