2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer
2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer
2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer
2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer
2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer
2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer
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2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer

2GT 22T-80T Timing Belt Pulleys Pitch 2mm With Keyway Width 11mm For CNC Printer

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$4.69 USD
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In stock (500 units), ready to be shipped

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Description

2GT Timing Belt Pulleys — Precision 2mm Pitch Drive Components for CNC & 3D Printing

When your CNC router skips steps or your 3D printer loses positional accuracy, the culprit is often a worn or mismatched timing pulley. Makers, machine builders, and automation engineers who demand repeatable motion control need a pulley that holds tight tolerances across thousands of cycles — and that's exactly what these 2GT timing belt pulleys are built for.

Each pulley is machined from aluminum alloy with a hard-anodized finish, featuring a 2mm tooth pitch (GT2 profile), 11mm belt width, and a keyed bore ranging from 8mm to 25mm (approximately 0.31" to 0.98"). Tooth counts span 22T to 80T, covering a wide range of gear ratios. Two hub styles are available: K-type (set-screw collar) for smaller tooth counts and BF-type (dual-flange) for larger pulleys requiring belt retention.

These pulleys are widely used in desktop CNC routers requiring precise X/Y axis drive, FDM 3D printer extruder and motion systems, and light-duty industrial automation conveyor or indexing drives where a 2GT belt and keyed shaft connection are specified.

✅ Compatible with standard 2GT / GT2 open-loop and closed-loop timing belts, 10mm belt width. Verify bore diameter and keyway dimensions match your shaft before ordering.

✅ Key Features of These 2GT Timing Belt Pulleys

  • ⚙️ Wide Tooth Range (22T–80T): Covers common gear ratios for CNC, 3D printing, and light automation — select the exact tooth count your drive system requires.
  • 🔩 Keyed Bore Design: Keyway slots (3×1.4mm, 4×1.8mm, 5×2.3mm, 6×2.8mm, or 8×3.3mm depending on variant) provide positive torque transfer and prevent shaft slippage under load.
  • 📐 Precision 2mm GT2 Tooth Profile: The 2GT (GT2) profile delivers low backlash and smooth meshing with standard GT2 belts, maintaining positional accuracy in open-loop stepper systems.
  • 🛡️ Aluminum Alloy Construction: Lightweight yet rigid aluminum body keeps rotational inertia low while resisting deformation under continuous belt tension.
  • 🔄 K-type & BF-type Hub Options: K-type (set-screw) suits compact installations; BF-type (dual-flange) retains the belt laterally on larger pulleys, reducing the risk of belt walk-off.
  • 📏 Broad Bore Selection (8–25mm): Fits common stepper motor shafts (typically 5–8mm) via adapter or direct fit on servo/spindle shafts up to 25mm (≈0.98"), with matching keyway for each bore size.

📐 Technical Specifications — 2GT Timing Belt Pulleys

Belt Profile 2GT (GT2)
Tooth Pitch 2mm
Belt Width 11mm
Tooth Count Range 22T – 80T (see variant options)
Bore Diameter Range 8mm – 25mm (see variant options)
Keyway Sizes Available 3×1.4mm / 4×1.8mm / 5×2.3mm / 6×2.8mm / 8×3.3mm
Hub Style K-type (set-screw) or BF-type (dual-flange)
Material Aluminum alloy
Finish See variant options
Quantity per Order 1 piece
Weight See variant options

❓ Frequently Asked Questions

How do I choose the right tooth count for my application?

The tooth count determines your drive ratio. Divide the driven pulley teeth by the driving pulley teeth to get the ratio. For 1:1 motion (e.g., CoreXY 3D printers), use matching tooth counts on both ends. For speed reduction, use a larger tooth count on the driven side. Common CNC and 3D printer setups use 20T driving pulleys — pair with a larger tooth count if you need torque multiplication.

What is the difference between K-type and BF-type hubs?

K-type pulleys use a set-screw (grub screw) collar to clamp onto the shaft. They are compact and suit smaller tooth counts (22T–30T range in this listing). BF-type pulleys feature dual flanges on either side of the belt groove, which physically retain the belt and prevent it from walking off the pulley — recommended for larger pulleys or applications with lateral belt forces.

Will these pulleys fit standard GT2 timing belts?

Yes. The 2GT tooth profile is dimensionally identical to the GT2 profile and is fully compatible with standard GT2 open-loop and closed-loop timing belts. Ensure you select a belt with 10mm or 11mm width to match the pulley's 11mm belt groove width.

How do I select the correct bore size and keyway?

Measure your motor or drive shaft diameter precisely with calipers. Select the bore size that matches (e.g., 8mm bore for a standard NEMA 17 stepper motor shaft). Then select the keyway that corresponds to your shaft's key slot — refer to standard metric keyway tables (DIN 6885) for the correct key width and depth for your shaft diameter. If your shaft has no keyway, contact us to confirm set-screw-only options.

Are these pulleys suitable for high-speed or high-torque applications?

These aluminum 2GT pulleys are designed for light-to-medium duty applications such as desktop CNC routers, FDM 3D printers, and small automation systems. They are not rated for heavy industrial loads or continuous high-speed operation above the belt manufacturer's recommended surface speed. For demanding applications, verify belt tension, alignment, and operating RPM against the belt and pulley specifications.

Do these pulleys resist corrosion?

The aluminum alloy body provides inherent corrosion resistance suitable for indoor workshop and light industrial environments. The anodized or machined finish adds a layer of surface protection. These pulleys are not recommended for wet, salt-spray, or chemically aggressive environments without additional protective measures.

Can I use these pulleys with a closed-loop GT2 belt?

Yes, provided the closed-loop belt's inner circumference matches the center distance of your drive system and the belt width is compatible (10–11mm). Closed-loop GT2 belts are commonly used in delta-style 3D printers and some CNC pen plotters. Verify the belt loop length against your machine's geometry before ordering.

🛒 Select your tooth count, bore size, and keyway above, then add to cart.

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