45 Degree Gears | McMaster-Carr

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About Gears

Compare gear types, measure pitch and module, calculate mounting distance, increase speed or torque, and more.

Metal Miter Gears


Gears Sold Separately	Round Bore


For 45° Shaft Angle

With straight, conically shaped teeth and a 1:1 speed ratio, miter gears connect two shafts at an angle without changing shaft speed or torque. They're more efficient than spiral miter gears because they create less friction.

For two gears to mesh correctly, they must have the same pressure angle, shaft angle, pitch/module, and number of teeth.

1045 Carbon Steel—Carbon steel gears have hard, strong, and wear-resistant teeth. They’re best for heavy duty and high-torque applications, such as lifting equipment. However, these gears will rust when exposed to moisture or corrosive chemicals. Some gears have hardened teeth for additional wear resistance; gears with teeth that are not hardened can be hardened to fit your application.

												Hub, mm
	Gear Module	No. of Teeth	For Shaft Angle	Pressure Angle	Gear Pitch Dia., mm	OD, mm	Face Wd., mm	Overall Wd., mm	For Shaft Dia., mm	Mounting Distance, mm	Tooth Heat Treatment	Dia.	Wd.		Each
Round Bore







				1045 Carbon Steel

				1.5	20	45°	20°	30	32.8	11	19.3	8	45	Not Hardened	25	7.8	6529K57	000000


				2.5	20	45°	20°	50	54.6	18	31.9	12	75	Not Hardened	40	12.6	6529K61	00000