Mitre gears are a type of bevel gear designed to transmit power between two shafts that intersect at a 90-degree angle.
They work in pairs with a 1:1 gear ratio and are available in both straight and spiral versions. Straight mitre gears have matching numbers of straight teeth and a conical surface, allowing them to mesh seamlessly.
Angular mitre gears feature angles between 45 and 120 degrees, while spiral mitre gears, which are not identical, are supplied in matched left and right-handed pairs.
Mitre gears are used primarily to change the direction of shaft rotation without altering the speed, making them suitable for various applications where direction change is needed without speed modification.
Mitre gears are available in sizes ranging from 0.8 to 6.0 MOD/5 to 48 DP and are made from a variety of materials to suit different applications. They are offered in steel EN8 (080M40/080M46) with a 1:1 ratio, stainless steel 303/304, brass CZ 121 with a 1:1 ratio, die-cast zinc with a 1:1 ratio, and moulded nylon 6 (PA6) with 30% glass filling. Other options include moulded HOSTAFORM® C, hard-wearing Polyketone, and moulded acetal/DELRIN® 500, all with a 1:1 ratio.
Intermediate sizes and custom mitre gears can be produced according to specific drawings.