Worm Gearboxes

This shaft is designed to fit into a worm gearbox and act as an output shaft. You can install it by following these steps:

• Put the keys into the keyways on the shaft.
• Slide the shaft through the gearbox until it's centered inside.
• Slide washers onto both ends of the shaft.
• Put snap rings onto both ends of the shaft so that the washer is between the snap ring and the gearbox (There is a groove at the end of the shaft for the ring to rest inside).

Product			Gearbox Properties
Image	Part Number	Price	Gearbox Series	Gear Ratio	Maximum Strength of Gears	Input Shaft Diameter
	TRM4402_0	$92.50	50	30:1	85 N·m	14 mm

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
	TRM4325_0	$6.85	25 mm	Aluminum	611.8 kg·cm	4000 RPM
	TRM4329_0	$14.80	25 mm	Aluminum	3.3 Mg·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 Primer. Here is a list of our 25mm bore pulleys and sprockets:

Product			Physical Properties
Image	Part Number	Price	Inner Diameter	Number of Teeth
	TRM4155_0	$4.65	25 mm	20
	TRM4156_0	$8.00	25 mm	40
	TRM4157_0	$13.35	25 mm	60

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
	TRM4506_0	$5.25	25 mm	Rotary Shaft (Flanged)	7.9 kN	14 kN
	TRM4507_0	$5.75	25 mm	Rotary Shaft (Pillow Block)	7.9 kN	14 kN

Product Specifications

• Mechanical Drawings
• Rotary motion primer