GT2 Timing Belt
The GT2 timing belt is a possible replacement for T2.5 and T5 timing belts that some believe may cause backlash. The GT2 series of belts are designed specifically for linear motion. They use a rounded tooth profile that guarantees that the belt tooth fits smoothly and accurately in the pulley groove, so when you reverse the pulley direction, there is no room for the belt to move in the groove.
Vendors
Belts
Vendor | Loc. | Product | Width | Pitch | Length | Additional notes |
---|---|---|---|---|---|---|
3Distributed | UK | Kit | 6 mm | 2.00 mm | 1000 mm | |
3DMakerWorld | US | Belt | 6 mm | 2.00 mm | 1164 mm | |
B&B Manufacturing | US | Belt | 3 mm | 2.00 mm | 54-1910 mm | |
B&B Manufacturing | US | Belt | 6 mm | 2.00 mm | 54-1910 mm | |
B&B Manufacturing | US | Belt | 9 mm | 2.00 mm | 54-1910 mm | |
Beltingonline | UK | Universal Kit for RepRap/Other 3D Printers | 6 mm | 2.00 mm | 1032 & 1164 mm | |
Beltingonline | UK | Kit for RepRap Prusa | 6 mm | 2.00 mm | 900 mm | |
Beltingonline | UK | Kit for Rostock Delta Robot | 6 mm | 2.00 mm | 1524 mm | |
Beltingonline | UK | Kit for Rostock Mini | 6 mm | 2.00 mm | 1032 mm | |
Charlie's 3D Technologies | BE | Belt | 6 mm | 2.03 mm | 1000 mm | |
eBay: fabster3d | CN | Belt | 6 mm | 974-1164 mm | ||
EmotionTech | FR | Belt | 6 mm | 2.00 mm | 850 mm | |
Fabberworld | CH | Belt | 6 mm | 2.00 mm | 1000+ mm | |
Gadgets 3D | PL | Kit for RepRap Prusa 2 | 6 mm | 976 mm x 3 | ||
Gadgets 3D | PL | Kit for Rostock Mini | 6 mm | 900 mm x 3 | ||
Misumi | US | 2GT Belt | 4 mm | 2.00 mm | 662-9942 mm | |
Misumi | US | 2GT Belt | 6 mm | 2.00 mm | 662-9942 mm | |
Misumi | US | 2GT Belt | 9 mm | 2.00 mm | 662-9942 mm | |
RobotDigg | CN | GT2 Belt, MXL Belt | 6 mm | 2.00 mm | 1000-50000 mm | |
RoyalSupply | US | Belt | 6 mm | 2.00 mm | 1164 mm | |
TechPaladin Printing | US | Belt | 6 mm | 2.00 mm | 1380 mm | |
Ultibots | US | Belt | 6 mm | 2.00 mm | 1164 mm |
Pulleys
Vendor | Loc. | Product | Material | Belt width | Bore | Tooth | Flange | Additional notes |
---|---|---|---|---|---|---|---|---|
3Distributed | UK | Pulley | 7 mm | 5.00 mm | 20 | double | ||
3Distributed | UK | Kit | 7 mm | 5.00 mm | 20 | double | ||
3DMakerWorld | US | Pulley | Polycarbonate, fiberglass, brass | 6 mm | 5.00 mm | 36 | double | |
B&B Manufacturing | US | Pulley | Aluminium | 3 mm | 5.00 mm | 12-20 | double | |
B&B Manufacturing | US | Pulley | Aluminium | 6 mm | 5.00 mm | 12-20 | double | |
B&B Manufacturing | US | Pulley | Aluminium | 9 mm | 5.00 mm | 12-20 | double | |
Beltingonline | UK | Universal Kit for RepRap/Other 3D Printers | Aluminium | 5.00 mm | 20 | double | ||
Beltingonline | UK | Kit for RepRap Prusa | Aluminium | 5.00 mm | 20 | double | ||
Beltingonline | UK | Kit for Rostock Delta Robot | Aluminium | 5.00 mm | 20 | double | ||
Beltingonline | UK | Kit for Rostock Mini | Aluminium | 5.00 mm | 20 | double | ||
Charlie's 3D Technologies | BE | Pulley | Aluminium, nylon | 7 mm | 5.00 mm | 20 | double | |
Charlie's 3D Technologies | BE | Pulley | Aluminium | 7 mm | 5.00 mm | 20 | double | |
eBay: fabster3d | CN | Pulley | Aluminium (black) | 7 mm | 5.00 mm | 20 | double | |
EmotionTech | FR | Pulley | Aluminium | 6 mm | 5.00 mm | 20 | double | |
Fabberworld | CH | Pulley | Aluminium | 6 mm | 5.00 mm | 20 | double | |
Gadgets 3D | PL | Kit for RepRap Prusa 2 | Aluminium (black) | 6 mm | 5.00 mm | 20 | double | |
Gadgets 3D | PL | Kit for Rostock Mini | Aluminium (black) | 6 mm | 5.00 mm | 20 | double | |
Misumi | US | 2GT Pulley | Aluminium | 4 mm | 5.00 mm | 32 | double | |
Misumi | US | 2GT Pulley | Aluminium | 6 mm | 5.00 mm | 32 | double | |
Misumi | US | 2GT Pulley | Aluminium | 9 mm | 5.00 mm | 32 | double | |
Robotdigg | CN | GT2 Pulley | Aluminium | 6 mm | 5mm, 8mm | 20, 36 | double | |
RoyalSupply | US | Pulley | Aluminium | 4-6 mm | 4.76 mm | 18 | double | You'll need to redrill them to fit on the usual 5mm motor shaft |
Stock Drive Products | US | Pulley | 5.00 mm | 36 | ||||
Stock Drive Products | US | Pulley | 5.00 mm | 40 | ||||
Stock Drive Products | US | Pulley | 5.00 mm | 42 | ||||
TechPaladin Printing | US | Pulley | Aluminium | 6 mm | 5.00 mm | 20 | double | |
Ultibots | US | Pulley | Aluminium | 6 mm | 5.00 mm | 20 | double | |
UltiMachine | US | Pulley | Aluminium | 6 mm | 5.00 mm | 20 | double |
Stock Drive Products
In the US, the best source is SDP/SI. They sell a huge variety of belts and pulleys that meet our needs. Always call SDP/SI for stock, their website is always out of date.
- Pulleys
Filter for GT2, 2mm pitch, then choose the bore size needed for your steppers. - Belts
Filter on GT2, 2mm Pitch, and get 2 belts as close to 1m long as possible. - Misumi's pulley introduction
Note, unfortunately, SDP/SI does not carry a smaller diameter GT2 pulley with a 5mm bore, so to buy your pulleys here you need a larger pulley than in strictly ideal. These are fine, though. I use the 36 tooth pulleys on my printer and they work great.
Misumi
Another good source for GT2 pulleys and belts is Misumi. They carry a huge variety of suitable pulleys, including several that are closer to out ideal diameter. In addition, Misumi has offices around the globe so they are a better choice for international customers (though some regions will only sell to businesses).
Their website does not make it easy to browse for belts and pulleys, but here are the relevent pages in their catalog:
Note: Misumi calls theirs 2GT (2mm pitch) and 3GT (3mm pitch). As far as I know they are compatible with GT2, but both offer the same benefits. Misumi's pulleys seem expensive, but they are metal pulleys. We don't really need metal pulleys for our needs, but they are fine.