30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC
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30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC

30mm H Timing Belt – Trapezoid Teeth, 12.7mm Pitch, Closed Loop for CNC

HomeDIYer
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By HomeDIYer®

Price:
$9.18 USD
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In stock (500 units), ready to be shipped

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Description

 

30mm H Timing Belt — Reliable Closed-Loop Drive for CNC, Automation & Industrial Systems

When a slipping or mismatched drive belt causes positioning errors on your CNC router, laser cutter, or servo-driven axis, the entire job is compromised. Engineers, machine builders, and serious DIYers who depend on repeatable motion need a closed-loop timing belt that stays in sync under load — without stretching or skipping teeth. This 30mm H timing belt is built for exactly those applications.

Each belt is a single closed loop in the H-series (12.7mm / 1/2" pitch) standard, with a trapezoidal tooth profile and 30mm (≈1.18") belt width. Loop circumferences range from 139.7mm (≈5.5") up to 5,994.4mm (≈236.0"), with tooth counts from 11T to 472T — available in multiple size variants. The belt body is typically constructed from neoprene rubber with fiberglass or steel cord tensile members for dimensional stability under cyclic loading.

Typical use cases include CNC router X/Y axis drives, laser engraver gantry systems, servo motor power transmission, conveyor indexing, and 3D printer Z-axis or extruder drives that require a 1/2" pitch H-series belt. The closed-loop design eliminates the need for belt lacing and ensures consistent tooth engagement across the full circumference.

ℹ️ Compatibility: Designed for standard H-series (12.7mm / 1/2" pitch) timing pulleys with trapezoidal tooth profile. Confirm your pulley series is H-type and that the pulley width accommodates a 30mm belt before ordering.
⚠️ Size Selection: Select your model (e.g., 300H) and verify the loop circumference (LP) matches your drive system. The LP is the inside perimeter of the closed belt. See FAQ below for how to read model numbers and calculate required belt length.

✅ Key Features of These H Timing Belts

  • 🔁Closed-Loop Construction — Factory-joined endless loop eliminates splice points, ensuring uniform tension and tooth engagement around the full belt circumference for CNC and servo drive applications.
  • 📐12.7mm (1/2") H-Series Pitch — Trapezoidal tooth profile conforms to the standard H-series timing belt specification, compatible with widely available H-type pulleys used in CNC routers and industrial automation.
  • 📏30mm Belt Width — Wider than XL or L series belts, this 30mm (≈1.18") width provides increased contact area for higher torque transmission in demanding drive systems.
  • 🧱Reinforced Tensile Core — Fiberglass or steel cord reinforcement (typical for H-series construction) resists elongation under cyclic load, maintaining positional accuracy over extended operation.
  • 📦Wide Size Range — Available from 56H (139.7mm LP) to 2360H (5,994.4mm LP), covering compact desktop CNC machines through large-format gantry systems with a single product line.
  • ⚙️Neoprene Rubber Body — Neoprene construction generally offers resistance to oil, moderate heat, and humidity — suitable for workshop and light industrial environments where drive belts are exposed to typical operating conditions.

📐 Technical Specifications — H Timing Belt (30mm Width, 12.7mm Pitch)

Belt Series H (Imperial Timing Belt Standard)
Pitch 12.7mm (1/2")
Tooth Profile Trapezoidal
Belt Width 30mm (≈1.18")
Loop Circumference (LP) 139.7mm – 5,994.4mm (≈5.5" – 236.0") — see variant options
Number of Teeth 11T – 472T — see variant options
Belt Type Closed loop (endless)
Body Material Neoprene rubber (typical)
Tensile Member Fiberglass or steel cord (typical for H-series)
Compatible Pulley Standard H-series timing pulleys (12.7mm pitch, trapezoidal)
Typical Applications CNC routers, laser cutters, servo drives, conveyor indexing, 3D printers
Operating Temperature Contact us to confirm
Country of Origin See variant options

❓ Frequently Asked Questions

How do I choose the right loop circumference for my machine?

Measure the center-to-center distance between your drive and driven pulleys, then calculate the required belt length using the standard formula: LP ≈ 2C + π(D1+D2)/2. The loop circumference (LP) listed in each variant is the inside perimeter of the belt. For example, a 300H belt has an LP of 762mm (≈30.0"). Always verify against your machine's spec sheet or the markings on your existing belt before ordering.

What does the 'H' designation mean in H timing belts?

'H' refers to the H-series tooth profile in the imperial timing belt standard. H-series belts have a 12.7mm (1/2") pitch — the distance between tooth centers — and a trapezoidal tooth shape. This pitch is generally used for moderate-to-high torque applications such as CNC routers, servo drives, and industrial automation equipment.

What load or torque can this belt handle?

H-series timing belts at 30mm width are generally rated for moderate-to-high torque transmission. Actual load capacity depends on pulley diameter, operating speed, belt tension, and system design. For specific tension or power ratings relevant to your application, contact us to confirm or refer to your drive system's engineering documentation.

Is this belt suitable for outdoor or high-humidity environments?

H timing belts are typically constructed from neoprene rubber with fiberglass or steel cord reinforcement, which provides good resistance to moisture and moderate temperature ranges. They are generally not recommended for prolonged immersion or highly corrosive chemical environments. For outdoor CNC or industrial use, shielding the belt from direct UV exposure is advisable to extend service life.

What pulley or sprocket standard is compatible with this belt?

This belt is compatible with standard H-series (1/2" pitch) timing pulleys with a trapezoidal tooth profile. Ensure your pulley's tooth profile matches the H-type and that the pulley width accommodates a 30mm (≈1.18") belt. Common timing belt series include MXL, XL, L, H, XH — select H-series pulleys specifically for this belt.

How do I read the model number, such as '300H'?

The number before 'H' represents the belt's loop circumference in tenths of an inch. For example: 300H = 300 × 0.1" = 30.0" (762mm) loop circumference. The 'H' indicates the 12.7mm pitch series. The number of teeth is derived from LP ÷ pitch (e.g., 762mm ÷ 12.7mm = 60 teeth). This naming convention is standard across H-series timing belt manufacturers.

Can I use this belt on a 3D printer or laser cutter?

Yes. H-series timing belts are commonly used in CNC routers, laser cutters, and larger-format 3D printers that require a 12.7mm pitch drive system. Verify that your machine's pulleys are H-series compatible and that the 30mm belt width fits within your pulley flanges before ordering. Smaller desktop 3D printers typically use GT2 or XL belts — confirm your machine's spec first.

🛒 Select your model and loop circumference above, then add to cart — ships from our US warehouse.

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