Shaft Couplers

If you need to connect this shaft to a motor or another device with a shaft, you can use a shaft coupler:

Product			Physical Properties
Image	Part Number	Price	Inner Diameter	Material	Coupling Rated Torque	Coupling Rated Speed	Torsional Stiffness
	3423_0	$7.50	8 mm	Aluminium	4.1 kg·cm	10000 RPM	100 N·m/rad
	TRM4313_0	$2.80	8 mm	Aluminum	35.7 kg·cm	12000 RPM	—
	TRM4334_0	$3.35	8 mm	Aluminium	10 kg·cm	8000 RPM	110 N·m/rad

Pulleys and Sprockets

If you're using a rotary system that requires a lot of torque, you may be interested in pulleys and sprockets. By using a two pulleys or sprockets of different sizes, you can increase the gear ratio of the system. Pulleys and sprockets can also be used to transmit rotation over a long distance. For more guidance on building a transmission system, visit our Rotary Motion Primer. Here is a list of our 8mm bore pulleys and sprockets:

Product			Physical Properties
Image	Part Number	Price	Inner Diameter	Number of Teeth
	TRM4102_0	$2.25	8 mm	22
	TRM4103_0	$2.25	8 mm	32
	TRM4104_0	$2.45	8 mm	44
	TRM4105_0	$3.00	8 mm	60
	TRM4106_0	$3.70	8 mm	80
	TRM4111_0	$2.25	8 mm	12
	TRM4112_0	$3.15	8 mm	24
	TRM4113_0	$4.45	8 mm	34
	TRM4114_0	$6.70	8 mm	50
	TRM4135_0	$1.85	8 mm	10
	TRM4158_0	$3.25	8 mm	44

Rotary Bearings

Systems with heavy loads or pulley/sprocket assemblies often put a lot of sideways strain on the shaft. In such a system, you can use rotary bearings to protect and support the shaft:

Product			Physical Properties		Mechanical Properties
Image	Part Number	Price	Inner Diameter	Bearing Type	Static Load	Dynamic Load
	TRM4500_0	$4.00	8 mm	Rotary Shaft (Flanged)	1.3 kN	3.3 kN
	TRM4501_0	$4.25	8 mm	Rotary Shaft (Pillow Block)	1.3 kN	3.3 kN

Product Specifications

• Rotary motion primer