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
Part Number	Price	Inner Diameter	Material	Coupling Rated Torque	Coupling Rated Speed	Torsional Stiffness
TRM4317_0 Jaw Coupling Half 12mm Series 12	$3.60	12 mm	Aluminum	35.7 kg·cm	12000 RPM	—
TRM4318_0 Jaw Coupling Half 12mm Series 24	$6.85	12 mm	Aluminum	611.8 kg·cm	4000 RPM	—

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 Guide. Here is a list of our 12mm bore pulleys and sprockets:

Product		Physical Properties
Part Number	Price	Inner Diameter	Number of Teeth
TRM4139_0 #25 Chain Sprocket with 12mm Bore and 12 Teeth	$3.25	12 mm	12
TRM4140_0 #25 Chain Sprocket with 12mm Bore and 18 Teeth	$3.75	12 mm	18
TRM4141_0 #25 Chain Sprocket with 12mm Bore and 32 Teeth	$5.00	12 mm	32
TRM4142_0 #25 Chain Sprocket with 12mm Bore and 52 Teeth	$8.00	12 mm	52
TRM4107_0 GT2 Pulley with 12mm Bore and 36 Teeth	$3.00	12 mm	36
TRM4108_0 GT2 Pulley with 12mm Bore and 44 Teeth	$3.00	12 mm	44
TRM4109_0 GT2 Pulley with 12mm Bore and 60 Teeth	$3.55	12 mm	60
TRM4110_0 GT2 Pulley with 12mm Bore and 80 Teeth	$4.45	12 mm	80
TRM4161_1 #40 Chain Idler Sprocket 12mm Bore with Spacers	$8.00	12 mm	13
TRM4144_0 #40 Chain Sprocket with 12mm Bore and 9 Teeth	$4.25	12 mm	9
TRM4145_0 #40 Chain Sprocket with 12mm Bore and 14 Teeth	$4.50	12 mm	14
TRM4146_0 #40 Chain Sprocket with 12mm Bore and 20 Teeth	$7.00	12 mm	20
TRM4159_1 GT5 Idler Pulley 12mm Bore with Spacers	$7.00	12 mm	30
TRM4120_0 GT5 Pulley with 12mm Bore and 16 Teeth	$3.50	12 mm	16
TRM4121_0 GT5 Pulley with 12mm Bore and 24 Teeth	$4.00	12 mm	24
TRM4122_0 GT5 Pulley with 12mm Bore and 34 Teeth	$5.00	12 mm	34
TRM4123_0 GT5 Pulley with 12mm Bore and 50 Teeth	$7.40	12 mm	50
TRM4124_0 GT5 Pulley with 12mm Bore and 72 Teeth	$12.95	12 mm	72

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
Part Number	Price	Inner Diameter	Bearing Type	Static Load	Dynamic Load
TRM4502_0 Flanged Rotary Bearing for 12mm Shaft	$4.00	12 mm	Rotary Shaft (Flanged)	2.4 kN	5.1 kN
TRM4503_0 Pillow Block Rotary Bearing for 12mm Shaft	$4.00	12 mm	Rotary Shaft (Pillow Block)	2.4 kN	5.1 kN

Product Specifications

Documents

• Rotary motion Guide

Here are all of our 12mm shafts:

Product		Physical Properties
Part Number	Price	Diameter
TRM4016_0 12mm Precision Ground Rotary Shaft (no keyway)	$6.50/Meter	12 mm
TRM4001_0 12mm Precision Ground Rotary Shaft (w/ keyway)	$45.00/Meter	12 mm