Chain Sprockets | Torque Transmission

Roller Chain Sprockets Dimensions & Bores Click on Desired Sprocket for Detailed Technical Information
Sprocket Number	Number of Teeth	Outside Dia.	Pitch Dia.	Root Dia.	Standard Bores			Type
Sprocket Number	Number of Teeth	Outside Dia.	Pitch Dia.	Root Dia.	1/4	3/8	1/2	Type
S 2509 S 2510 S 2511 S 2512 S 2513	09 10 11 12 13	0.850 0.931 1.010 1.092 1.170	0.731 0.809 0.887 0.997 1.044	0.601 0.769 0.757 0.836 0.914	• • • • •	• • • • •		Figure 1
S 2514 S 2515	14 15	1.250 1.332	1.123 1.202	0.993 1.072	• •	• •	• •	Figure 2
S 2516* S 2517* S 2518* S 2519* S 2520* S 2521* S 2522* S 2523* S 2524* S 2526* S 2528* S 2530*	16 17 18 19 20 21 22 23 24 26 28 30	1.412 1.493 1.573 1.654 1.731 1.813 1.892 1.972 2.052 2.214 2.368 2.529	1.281 1.360 1.439 1.519 1.598 1.677 1.757 1.836 1.915 2.074 2.233 2.392	1.151 1.230 1.309 1.389 1.468 1.547 1.626 1.706 1.785 1.944 2.103 2.262	• • • • • • • • • • • •	• • • • • • • • • • • •	• • • • • • • • • • • •	Figure 2
S 2532* S 2536* S 2540* S 2542* S 2545* S 2548*	32 36 40 42 45 48	2.686 3.003 3.319 3.484 3.716 3.955	2.550 2.868 3.186 3.345 3.583 3.822	2.420 2.738 3.056 3.215 3.454 3.692	• • • • • •	• • • • • •	• • • • • •	Figure 3
* Aluminum hub available upon request.

Advantages of molded nylon Roller Chain Sprockets:
lightweight, more quiet than steel, non-corrosive and can run without lubrication.

The S25 series is a molded, glass-reinforced nylon sprocket that is lightweight, durable, and economical.
Select from 9 to 48 tooth, 1/4" pitch single sprocket with B Hub configuration.
The Sprockets are molded with three standard bore sizes, 1/4", 3/8", and 1/2" with a single shaft locking setscrew. Non-standard bores are available upon request.
Options: The sprockets can be molded with D-bore, keyway, or non-standard bore size. Instead of a setscrew, a cross hole drilled in the hub for dowel pin.
For greater strength, aluminum hubs are available for S-2516 sprocket and larger. With an aluminum hub, single, double, or triple sprockets are available.

Chain Sprockets, Molded Nylon for No. 25 (1/4" pitch)