HTD 5M Timing Belt Closed Loop — 520–910mm Perimeter, 10/15/20/25/30/35mm Width

Measure the center-to-center distance between your two pulleys, then use the standard belt length formula: Belt Length ≈ 2 × C + π × (D1 + D2) / 2. For example, a 700mm (≈27.6") belt typically suits a center distance of around 300–320mm with standard HTD pulleys. The easiest method is to check your existing belt's surface — it will generally be printed with the perimeter in mm (e.g., "700-5M-15" means 700mm perimeter, 5M pitch, 15mm wide). Always verify against your machine's spec sheet before ordering.

Wider belts carry more torque. For light-duty 3D printers and small desktop CNC routers, 10mm or 15mm widths are generally sufficient. For heavier gantry systems, laser cutters, or robotics joints, 20–25mm widths are more common. 30mm and 35mm widths are typically used in higher-torque or industrial-adjacent applications. When in doubt, match the width of your existing belt or consult your machine's documentation.

Load capacity depends on belt width and the number of teeth in mesh with the pulley. Generally, a 15mm-wide HTD 5M belt can handle approximately 100–200N of tangential force in typical motion-control applications. Wider belts scale proportionally. Always apply an appropriate service factor based on your drive system's duty cycle and shock loading. Contact us to confirm suitability for high-load applications.

HTD 5M belts are typically constructed from neoprene rubber with fiberglass cord reinforcement, which offers moderate resistance to moisture and mild temperature variation. They are generally not recommended for prolonged submersion, direct oil contact, solvent exposure, or extended outdoor UV exposure. For harsh-environment use, a protective enclosure is advisable. Contact us to confirm if your specific environment is suitable.

Yes — these belts follow the HTD 5M profile standard: 5mm pitch with a rounded tooth form designed to mesh with HTD 5M pulleys. They are not interchangeable with GT2 (2mm pitch), T5 (5mm trapezoidal), MXL, or XL pulleys. Always verify your pulley is specifically labeled HTD 5M before ordering. Using a mismatched pulley profile will cause skipping or premature wear.

For HTD 5M belts, the tooth count is simply the belt perimeter divided by the pitch: Teeth = Perimeter (mm) ÷ 5. For example, a 700mm belt has 140 teeth. Each variant in this listing shows both the perimeter and tooth count (e.g., "700mm & 140") so you can match your replacement without manual calculation. You can also count teeth directly on the old belt if the surface label is worn.

HTD 5M closed loop timing belts are widely used in CoreXY and Cartesian 3D printers (such as Voron, RatRig, and similar builds), desktop CNC routers, CO₂ and diode laser engravers, pick-and-place machines, robotic arm joints, linear actuators, and general automation equipment. They are a standard choice wherever precise, slip-free synchronous power transmission is needed at moderate speeds and torques.

Common signs that an HTD 5M timing belt needs replacement include: visible cracking or fraying on the belt body or tooth faces, layer shifting in 3D prints that cannot be resolved by tension adjustment, audible skipping or slapping during operation, visible tooth wear or rounding, and measurable belt elongation (the belt feels loose even at maximum tensioner travel). In most cases, replacing the belt in pairs (both X and Y axes) is recommended to maintain consistent tension characteristics.