The idler sprocket is a key component that is widely used in mechanical transmission systems to regulate chain tension, extend chain life and ensure smooth operation of the transmission system. As a specialist roller chain idler sprocket supplier, we offer many types of idler sprockets to meet the needs of different industrial scenarios. Below are our main product categories for details.
Roller Chain Idler Sprockets for Sale
Ball Bearing Idler Sprockets
Ball bearing idler sprockets are known for their efficient operation and low friction characteristics and are suitable for high-speed transmission systems. This idler sprocket is designed with high-quality ball bearings to reduce wear and improve operating efficiency. Ball-bearing idler sprockets is ideal for both light and medium load applications.
| Z | Pitch | de | dp | A | D1 | F | B | H | Chain Size |
| 23 | 8×3 | 62.15 | 58.75 | 2.8 | 16 | 40 | 12 | 18.3 | #35 |
| 21 | 3/8″×7/32″ | 68 | 63.9 | 5.3 | 16 | 40 | 12 | 18.3 | #35 |
| 18 | 1/2″×1/8″ | 78.9 | 73.14 | 3 | 16 | 40 | 12 | 18.3 | #40 |
| 18 | 1/2″×3/16″ | 78.9 | 73.13 | 4.5 | 16 | 40 | 12 | 18.3 | #40 |
| 16 | 1/2″×5/16″ | 69.5 | 65.1 | 7.2 | 16 | 40 | 12 | 18.3 | #40 |
| 18 | 1/2″×5/16″ | 77.8 | 73.14 | 7.2 | 16 | 40 | 12 | 18.3 | #40 |
| 14 | 5/8″×3/8″ | 78 | 71.34 | 9.1 | 16 | 40 | 12 | 18.3 | #50 |
| 15 | 5/8″×3/8″ | 83 | 76.36 | 9.1 | 16 | 40 | 12 | 18.3 | #50 |
| 17 | 5/8″×3/8″ | 93 | 86.39 | 9.1 | 16 | 40 | 12 | 18.3 | #50 |
| 13 | 3/4″×7/16″ | 87.5 | 79.59 | 11.1 | 16 | 40 | 12 | 18.3 | #60 |
| 15 | 3/4″×7/16″ | 99.8 | 91.63 | 11.1 | 16 | 40 | 12 | 17.3 | #60 |
| 12 | 1″×17.02 | 109 | 98.14 | 16.2 | 20 | 47 | 14 | 17.7 | #80 |
| 13 | 1″1/4×3/4″ | 147.8 | 132.65 | 18.5 | 25 | 52 | 15 | 21 | #100 |
Needle Bearing Idler Sprockets
If you need more carrying capacity and durability, needle-bearing idler sprockets will be your choice. The idler sprocket is designed for heavy-duty and complex operating conditions, and the needle roller bearing structure keeps it stable in high intensity operation. It works well in both roller chain idler sprocket and tension sprocket applications.
| Sprocket Size | Number Of Teeth | Bearing Type | Chain Size | Outside Diameter | Bore Size | Length Thru Bore | Dimension (T) | Hub Diameter | Weight |
| 25NB19H | 19 | Needle Bearing | #25 | 1.65″ | 0.50″ | 0.750″ | 0.110″ | 1.22″ | 0.10 LBS |
| 35NB13H | 13 | Needle Bearing | #35 | 1.75″ | 0.50″ | 0.75″ | 0.168″ | 1.18″ | 0.20 LBS |
| 35NB19H | 19 | Needle Bearing | #35 | 2.47″ | 1.00″ | 1.00″ | 0.168″ | 1.84″ | 0.50 LBS |
| 40NB19H | 19 | Needle Bearing | #40 | 3.29″ | 1.00″ | 1.00″ | 0.284″ | 2.50″ | 1.10 LBS |
| 41NB19H | 19 | Needle Bearing | #41 | 3.29″ | 1.00″ | 1.00″ | 0.227″ | 2.50″ | 1.00 LBS |
| 50NB17H | 17 | Needle Bearing | #50 | 3.72″ | 1.00″ | 1.00″ | 0.343″ | 2.25″ | 1.30 LBS |
| 80NB13H | 13 | Needle Bearing | #80 | 4.66″ | 1.00″ | 1.25″ | 0.575″ | 2.63″ | 2.90 LBS |
| 100NB11H | 11 | Needle Bearing | #100 | 5.01″ | 1.50″ | 1.88″ | 0.692″ | 3.56″ | 3.60 LBS |
| 120NB11H | 11 | Needle Bearing | #120 | 6.01″ | 1.50″ | 2.13″ | 0.924″ | 3.56″ | 7.00 LBS |
| 140NB11H | 20 | Needle Bearing | #140 | 7.01″ | 1.50″ | 2.25″ | 0.924″ | 4.25″ | 10.90 LBS |
| 160NB9H | 9 | Needle Bearing | #160 | 6.70″ | 1.50″ | 2.25″ | 1.156″ | 3.63″ | 9.60 LBS |
We also offer bronze bearing idler sprockets and bronze bushed idler sprockets, which are favored by our customers for their excellent corrosion resistance and self-lubrication properties. Especially suitable for use in humid or high-temperature environments, this idler sprocket reduces maintenance costs while ensuring the stability of the chain drive.
Bronze Bearing Idler Sprockets
| Sprocket Size | Number Of Teeth | Bearing Type | Chain Size | Outside Diameter | Bore Size | Length Thru Bore | Dimension (T) | Hub Diameter | Weight |
| 35BR15 | 15 | Bronze Bearing | #35 | 1.99″ | 1/2″ | 0.94″ | 0.168″ | 1.35″ | 0.30 LBS |
| 35BR21 | 21 | Bronze Bearing | #35 | 2.71″ | 7/8″ | 1.06″ | 0.168″ | 2.00″ | 0.75 LBS |
| 40BR13 | 13 | Bronze Bearing | #40 | 2.33″ | 1/2″ | 0.94″ | 0.284″ | 1.56″ | 0.50 LBS |
| 40BR19 | 19 | Bronze Bearing | #40 | 3.29″ | 7/8″ | 1.06″ | 0.284″ | 2.50″ | 1.25 LBS |
| 41BR13 | 13 | Bronze Bearing | #41 | 2.33″ | 1/2″ | 0.94″ | 0.227″ | 1.56″ | 0.50 LBS |
| 41BR19 | 19 | Bronze Bearing | #41 | 3.29″ | 7/8″ | 1.06″ | 0.227″ | 2.50″ | 1.00 LBS |
| 50BR13 | 13 | Bronze Bearing | #50 | 2.91″ | 1/2″ | 0.94″ | 0.343″ | 1.87″ | 0.90 LBS |
| 50BR17 | 17 | Bronze Bearing | #50 | 3.72″ | 7/8″ | 1.06″ | 0.343″ | 2.62″ | 1.50 LBS |
Bronze Bushed Idler Sprockets
| Sprocket Size | Number Of Teeth | Chain Size | Outside Diameter | Bore Size | Weight |
| 31E20 | 20 | #35 | 2.60″ | 1/2″ | 0.46 LBS |
| 41E15 | 15 | #41 – #40 | 2.65″ | 1/2″ | 0.50 LBS |
| 51E15 | 15 | 50 | 3.32″ | 1/2″ | 0.70 LBS |
| 61E14 | 14 | 60 | 3.74″ | 1/2″ | 0.92 LBS |
Why Choose Our Idler Sprockets?
As a specialist manufacturer in the field of idler sprockets, we are committed to providing our customers with a diverse selection of high-quality products such as ball-bearing idler sprockets and needle-bearing idler sprockets. Our roller chain idler sprockets and tension sprockets are designed to meet international standards and can be seamlessly adapted to all chain systems. Whatever your needs, we can provide customized sprocket solutions to help your equipment run efficiently.
