21Tooth Sprockets
Chain Pull Calculator
21Tooth Sprockets
21-tooth sprockets available with various bore types—idler, keyway (with or without setscrew), or square—precision-bored to fit round or square shafts ranging from 1" to 1-7/16" for optimal clearance and secure fit.
Product Code: NS850021
Category: Sprockets
| Select | Part Number | Description | Tooth count | Bore Size | Bore Type | Length | Size | Color | List Price | |
|---|---|---|---|---|---|---|---|---|---|---|
| NS8500-21T112Idler | NS8500-21T, 1-1/2", Idler Bore - 21 tooth, bored for clearance fit to 1-1/2" round shaft. | 21 | 1 | 1/2 Idler Bore | 5.125 | 1-1/2 in. | $97.61 | Buy | ||
| NS8500-21T112KW | NS8500-21T, 1-1/2", Keyway without setscrew - 21 tooth, bored for clearance fit to 1-1/2" round shaft. | 21 | 1 | 1/2 Keyway | 5.125 | 1-1/2 in. | $97.61 | Buy | ||
| NS8500-21T112KWSS | NS8500-21T, 1-1/2", Keyway with setscrew - 21 tooth, bored to fit 1-1/2" round shaft. | 21 | 1 | 1/2 Fit To shaft | 5.125 | 1-1/2 in. | $97.61 | Buy | ||
| NS8500-21T112SQ | NS8500-21T, 1-1/2", Square bore - 21 tooth, bored to fit 1-1/2" square shaft. | 21 | 1 | 1/2 Square | 5.125 | 1-1/2 in. | $97.61 | Buy | ||
| NS8500-21T114Idler | NS8500-21T, 1-1/4", Idler Bore - 21 tooth, bored for clearance fit to 1-1/4" round shaft. | 21 | 1 | 1/4 Idler Bore | 5.125 | 1-1/4 in. | $97.61 | Buy | ||
| NS8500-21T114KW | NS8500-21T, 1-1/4", Keyway without setscrew - 21 tooth, bored for clearance fit to 1-1/4" round shaft. | 21 | 1 | 1/4 Keyway | 5.125 | 1-1/4 in. | $97.61 | Buy | ||
| NS8500-21T114KWSS | NS8500-21T, 1-1/4", Keyway with setscrew - 21 tooth, bored to fit 1-1/4" round shaft. | 21 | 1 | 1/4 Fit To shaft | 5.125 | 1-1/4 in. | $97.61 | Buy | ||
| NS8500-21T1716Idler | NS8500-21T, 1-7/16", Idler Bore - 21 tooth, bored for clearance fit to 1-7/16" round shaft. | 21 | 1 | 7/16 Idler Bore | 5.125 | 1-7/16 in. | $97.61 | Buy | ||
| NS8500-21T1716KW | NS8500-21T, 1-7/16", Keyway without setscrew - 21 tooth, bored for clearance fit to 1-7/16" round shaft. | 21 | 1 | 7/16 Keyway | 5.125 | 1-7/16 in. | $97.61 | Buy | ||
| NS8500-21T1716KWSS | NS8500-21T, 1-7/16", Keyway with setscrew - 21 tooth, bored to fit 1-7/16" round shaft. | 21 | 1 | 7/16 Fit To shaft | 5.125 | 1-7/16 in. | $97.61 | Buy | ||
| NS8500-21T1Idler | NS8500-21T, 1", Idler Bore - 21 tooth, bored for clearance fit to 1" round shaft. | 21 | 1 | Idler Bore | 5.125 | 1 in. | $97.61 | Buy | ||
| NS8500-21T1KW | NS8500-21T, 1", Keyway without setscrew - 21 tooth, bored for clearance fit to 1" round shaft. | 21 | 1 | Keyway | 5.125 | 1 in. | $97.61 | Buy | ||
| NS8500-21T1KWSS | NS8500-21T, 1", Keyway with setscrew - 21 tooth, bored to fit 1" round shaft. | 21 | 1 | Fit To shaft | 5.125 | 1 in. | $97.61 | Buy | ||
| NS8500-21T1SQ | NS8500-21T, 1", Square bore - 21 tooth, bored to fit 1" square shaft. | 21 | 1 | Square | 5.125 | 1 in. | $97.61 | Buy | ||
| NS8500-21T2SQ | NS8500-21T, 2", Square bore - 21 tooth, bored to fit 2" square shaft. | 21 | 2 | Square | 5.125 | 2 in. | $97.61 | Buy |
