GT2 Pulley 20 Teeth Double Head 5mm Bore: Symmetry and Precision for Complex Bevel Gearboxes
GT2 'double-head' pulleys are an essential specialised variant for designers of advanced drive systems. Featuring a double flange that creates a symmetrical centre seat, these pulleys are designed to ensure flawless belt alignment, making them the ideal component for bevel gearboxes where lateral stability is critical. With DHM, choose high-quality mechanical components, tested to provide smoothness and strength in your most ambitious projects.
What is the GT2 Double Head Pulley?
It is an aluminium transmission element with a rounded tooth profile (2mm pitch) and 20 teeth. Its 'double head' configuration provides retaining flanges on both sides of the teeth, creating a closed guide that prevents any axial displacement of the belt. With a 5mm bore, it fits perfectly on stepper motor shafts NEMA 17 or ground idlers.
Why choose our double-head pulley?
This variant offers specific technical advantages over standard pulleys, improving belt handling:
- Total Containment: The double flange acts as a safety rail, eliminating the risk of the belt coming off the seat during violent acceleration or in the event of slight misalignment of the frame.
- Synchronous Precision: The GT2 profile is designed to eliminate backlash, ensuring smooth and silent power transmission.
- CNC Aluminium Construction: CNC machined to ensure perfect concentricity and minimum rotational inertia.
- Mounting Versatility: Supplied with locking dowels for stable anchoring, it is ideal both as a driving pulley and as an active bevel gear on rotating shafts.
Note on manufacturing tolerances
We work to ensure the highest quality consistency, however, due to possible variations between production batches, actual measurements may differ from those stated on the data sheet by ±2 mm (except for internal bore). If your project requires specific dimensions or precise millimetre tolerances, we recommend that you contact us prior to purchase for direct verification of stock measurements.
When to use the GT2 Double Head Pulley?
Due to its ability to keep the belt perfectly aligned, it is the ideal component for:
- CoreXY and H-Bot systems: Perfect for 3D printers where belts need to cross or travel long distances while maintaining strict alignment.
- Mechanical Idlers: Used as a timing pulley in systems where space for external tensioners is limited.
- Automation and Robotics: Excellent for linear actuators working vertically or in positions where gravity could affect belt stability.
Package contains: 1 x GT2 pulley Ø 5mm 20 teeth H6 double head
