We supply the widest selection of 81X roller chain sprockets in the world! All of our 81x sprockets are manufactured using high-quality materials and are precision manufactured for optimum performance and working life. The majority of out 81X chain sprockets are manufactured from steel, but we also have cast sprockets. For washdown applications, we also supply high-quality 303, 304, 316-grade stainless steel 81X sprocket as well as plastic 81X sprockets.
81X sprockets work with chain sizes: 81X, 81XH, 81XHH, 81XHD, 81XXHD, 81XHS, 81X-RT, 81XHT
Common configurations for 81X sprockets are A-plate which is a simple plate sprocket, B-Hub which has a hub on 1 side, C-Hub which has a hub on both sides, idler, as well as split construction for both A and B hub style sprockets. Because of the ease in replacing, split sprockets are actually becoming more and more popular and the preference for most facilities, despite the higher initial cost.
81X Chain Sprocket Dimensions
| A-Plate | B-Hub | C-Hub | B-Split Sprockets | C-Split Sprockets | Idler Sprockets | Plastic Sprockets |
|---|---|---|---|---|---|---|
| 81XA7 | 81XB7 | 81XC7 | SPLIT-81XB7 | SPLIT-81XC7 | 7-TOOTH | 5-TOOTH |
| 81XA8 | 81XB8 | 81XC8 | SPLIT-81XB8 | SPLIT-81XC8 | 8-TOOTH | 6-TOOTH |
| 81XA9 | 81XB9 | 81XC9 | SPLIT-81XB9 | SPLIT-81XC9 | 9-TOOTH | 8-TOOTH |
| 81XA10 | 81XB10 | 81XC10 | SPLIT-81XB10 | SPLIT-81XC10 | 10-TOOTH | 9-TOOTH |
| 81XA11 | 81XB11 | 81XC11 | SPLIT-81XB11 | SPLIT-81XC11 | 11-TOOTH | 10-TOOTH |
| 81XA12 | 81XB12 | 81XC12 | SPLIT-81XB12 | SPLIT-81XC12 | 12-TOOTH | 12-TOOTH |
| 81XA13 | 81XB13 | 81XC13 | SPLIT-81XB13 | SPLIT-81XC13 | 13-TOOTH | 13-TOOTH |
| 81XA14 | 81XB14 | 81XC14 | SPLIT-81XB14 | SPLIT-81XC14 | 14-TOOTH | 14-TOOTH |
| 81XA15 | 81XB15 | 81XC15 | SPLIT-81XB15 | SPLIT-81XC15 | 15-TOOTH | — |
| 81XA16 | 81XB16 | 81XC16 | SPLIT-81XB16 | SPLIT-81XC16 | 16-TOOTH | — |
| 81XA17 | 81XB17 | 81XC17 | SPLIT-81XB17 | SPLIT-81XC17 | 17-TOOTH | — |
| 81XA18 | 81XB18 | 81XC18 | SPLIT-81XB18 | SPLIT-81XC18 | 18-TOOTH | — |
| 81XA19 | 81XB19 | 81XC19 | SPLIT-81XB19 | SPLIT-81XC19 | 19-TOOTH | — |
| 81XA20 | 81XB20 | 81XC20 | SPLIT-81XB20 | SPLIT-81XC20 | 20-TOOTH | — |
81X Hooked Tooth Sprockets
| Sprocket Size | Tooth Count | Style | Outside Diameter | Hub Diameter | Length Thru Bore | Stock Bore | Max Bore |
|---|---|---|---|---|---|---|---|
| 81X-B8RH | 8 | B | 6.5″ | 2.375″ | 1.625″ | 1″ | 1.5″ |
| 81X-B8LH | 8 | B | 6.5″ | 2.375″ | 1.625″ | 1″ | 1.5″ |
81X C-Hub Sprockets
| Sprocket Size | Tooth Count | Style | Outside Diameter | Hub Diameter | Length Thru Bore | Stock Bore | Max Bore |
|---|---|---|---|---|---|---|---|
| 81XC7 | 7 | C | 5.75″ | 2.375″ | 2.375″ | 0.75″ | 1.5″ |
| 81XC8 | 8 | C | 6.75″ | 2.375″ | 2.375″ | 0.75″ | 1.5″ |
| 81XC9 | 9 | C | 7.438″ | 2.375″ | 2.375″ | 0.75″ | 1.5″ |
81X Star Gear Sprocket
| Sprocket Size | Tooth Count | Style | Outside Diameter | Hub Diameter | Length Thru Bore | Stock Bore | Max Bore |
|---|---|---|---|---|---|---|---|
| 81X-SG510 | 10 | B | 4.484″ | 2.375″ | 2″ | 1″ | 1.5″ |
Cast sprockets are compatible with the following sizes: 75, 78, 88, H78, H79, BRH, 188, C188 conveyor chain, SS188, 78, MXS882, MSR1288, 433-1/2, H74, H75, H78A rooftop chain, H78B rooftop chain, H78SR, BRH188 conveyor chain, MW188RT, 488 pintle chain, SS578, and 81X.
Steel sprockets are compatible with the following sizes: 78, H74, 75, H75, H78LR, H75RT, H78SR, H79, 88, 188, S188, S78, R588, RR588, R778, RR778, 988, IS880, 87R, IS881, 81X, IS882, 433-1/2, LXS881, LXS886, US881, LXS887, LXS882, 488 pintle chain, XS578, SS188, C188 conveyor chain, US278R, US882, 578R, and 588R.