XXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm Wide
XXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm Wide
XXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm Wide
XXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm Wide
XXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm Wide
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XXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm WideXXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm WideXXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm WideXXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm WideXXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm Wide

XXH Timing Belt 31.75mm Pitch Closed Loop — CNC Pulley Drive, 56–144 Teeth, 50–150mm Wide

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Beschreibung

 

XXH Closed Loop Synchronous Timing Belt — 31.75mm Pitch for Heavy-Duty CNC Pulley Drives

When a slipping or mismatched drive belt brings your CNC router, industrial conveyor, or custom automation project to a halt, the cost isn't just the belt — it's the downtime. Engineers, machine builders, and serious DIYers who run XXH-pitch pulley systems need a closed loop timing belt that meshes precisely, holds tension under load, and arrives ready to install. This listing is built for exactly that use case.

Each belt in this listing is a closed-loop (endless) synchronous timing belt with an XXH trapezoidal tooth profile and a 31.75mm (1.25") pitch. Available in 10 tooth-count options ranging from 56 teeth / 1778mm (≈70") to 144 teeth / 4572mm (≈180"), and in six widths — 50mm (≈2"), 60mm (≈2.4"), 75mm (≈3"), 100mm (≈3.9"), 125mm (≈4.9"), and 150mm (≈5.9") — to match a wide range of drive configurations. Construction is typically neoprene or polyurethane body with fiberglass or steel tension cord reinforcement; contact us to confirm material for your specific variant.

Typical applications include heavy-duty CNC gantry and router drives, industrial conveyor synchronization systems, custom automation and robotics power transmission, and large-format laser or plasma cutting machine axes — anywhere a precise, no-slip synchronous belt drive is required.

ℹ️ Compatibility: Designed for standard XXH-profile pulleys with a 31.75mm (1.25") pitch. Verify your pulley tooth profile and pitch before ordering. Not interchangeable with XH, H, or metric HTD pulleys.

✅ Key Features of These XXH Closed Loop Timing Belts

  • 🔁Closed-Loop Endless Construction — Pre-formed as a continuous loop with no splice or joint, eliminating the weak point that open-ended belts introduce in high-cycle CNC pulley drive applications.
  • 📐XXH Trapezoidal Tooth Profile, 31.75mm Pitch — Conforms to the XXH industry standard, ensuring accurate mesh with XXH pulleys and consistent synchronous motion without tooth skip under load.
  • ↔️Wide Width Selection (50–150mm) — Six width options let you match belt capacity to your drive's torque requirements, from lighter CNC positioning axes to heavy industrial conveyor synchronization systems.
  • 📏10 Length Options (1778mm–4572mm) — Tooth counts from 56 to 144 cover a broad range of pulley center distances, reducing the need for custom fabrication on large-format machine builds.
  • 💪Reinforced Tension Cord Core — Fiberglass or steel cord reinforcement (varies by variant) resists elongation under sustained tension, maintaining consistent belt pitch and drive accuracy over time.
  • 🔧Drop-In Replacement Fit — Dimensioned to standard XXH specifications so these belts serve as direct replacements for worn or broken OEM closed loop synchronous timing belts on compatible machinery.

📐 Technical Specifications — XXH Closed Loop Synchronous Timing Belt

Belt Type Closed Loop (Endless) Synchronous Timing Belt
Tooth Profile XXH Trapezoidal
Pitch 31.75mm (1.25")
Available Tooth Counts 56, 57, 64, 72, 80, 85, 96, 112, 128, 144 teeth
Belt Circumference Range 1778mm (≈70") — 4572mm (≈180")
Available Widths 50mm (≈2"), 60mm (≈2.4"), 75mm (≈3"), 100mm (≈3.9"), 125mm (≈4.9"), 150mm (≈5.9")
Body Material See variant options — typically neoprene or polyurethane
Tension Member See variant options — typically fiberglass or steel cord
Compatible Pulley Standard XXH (Extra Extra Heavy) trapezoidal, 31.75mm pitch
Sold As 1 belt per order
Application CNC drives, industrial conveyors, automation, power transmission
⚠️ Sizing Note: Belt circumference = number of teeth × 31.75mm. Always confirm your required circumference and width against your machine's pulley layout before placing your order. If you are unsure, contact us with your pulley center distance and we will help you select the correct variant.

❓ Frequently Asked Questions

How do I choose the right belt length and tooth count?

Match the tooth count to your pulley center distance. The XXH pitch is 31.75mm (1.25" per tooth), so multiply the number of teeth by 31.75mm to get the belt circumference. For example, a 56-tooth belt has a circumference of 1778mm (≈70"). Always verify against your machine's pulley layout before ordering.

What load or torque can these belts handle?

XXH series timing belts are generally rated for heavy-duty power transmission. Actual load capacity depends on belt width, speed, and pulley diameter. Wider belts (100–150mm) typically handle significantly higher torque than narrower widths. Consult your drive system specifications to confirm suitability for your application.

Can these belts be used outdoors or in wet environments?

These belts are typically constructed with a neoprene or polyurethane body and fiberglass or steel cord reinforcement, which provides moderate resistance to moisture and oils. For continuous outdoor exposure or wet/submerged environments, contact us to confirm the specific material composition of your chosen variant before ordering.

What pulley standard do these belts fit?

These belts follow the XXH (Extra Extra Heavy) trapezoidal tooth profile standard with a 31.75mm (1.25") pitch. They are compatible with standard XXH pulleys. They are not interchangeable with XH, H, L, or metric HTD/GT2/GT3 pulleys. Verify your pulley's tooth profile and pitch before ordering.

Which width should I choose for my application?

Width selection depends on the torque and power requirements of your drive system. Lighter CNC routing or positioning applications generally work well with 50–75mm widths, while heavy industrial machinery or high-torque drives typically require 100–150mm widths. When in doubt, select a wider belt for added safety margin. Contact us if you need help sizing.

Are these closed-loop belts or open-ended?

These are closed-loop (endless) synchronous timing belts. They are pre-formed as a continuous loop and cannot be cut or spliced in the field. Select the tooth count that corresponds to your required belt circumference. Each listing variant specifies the exact tooth count and circumference in millimeters and inches.

What is the difference between XXH and other timing belt series like XH or H?

XXH (Extra Extra Heavy) has a 31.75mm pitch, which is larger than XH (22.225mm pitch) and H (12.7mm pitch). A larger pitch means each tooth is physically bigger, and the belt is designed for higher torque, lower-speed, heavy-duty applications. Use XXH only when your drive system or OEM specification calls for this pitch.

How many belts are included per order?

Each order includes 1 belt of the size and width you select. If you need multiple belts for a multi-axis machine or replacement stock, simply adjust the quantity at checkout.

🛒 Select your size (tooth count / length) and width above, then add to cart — ships from our US warehouse.

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