On request
MARTIN SPROCKET & GEAR
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MARTIN SPROCKET & GEAR 12BTB21H
#12BTB21H
On request
Tapered Bushed Sprocket - Metric - Taper Lock Bushing, 12B / 3/4 in, 21 Teeth, 2012 Bushing, Steel Material
Price on request — a consultant will confirm lead time and terms.
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MARTIN SPROCKET & GEAR — MARTIN SPROCKET & GEAR 12BTB21H
- A metric taper bushed sprocket is a sprocket where a tapered bushing is bolted into the taper bore that is machined in the sprocket.
- When installed this bushing is compressed onto the shaft providing a tight grip.
- Taper bushed sprockets have a tapered bushing bolted into a taper bore with hex head set screws instead of bolts.
- Tolerances meet or exceed ISO standards
- Manufactured of high carbon steel
Specifications
| Brand | MARTIN SPROCKET & GEAR |
| Category | BUSHED ROLLER CHAIN SPROCKETS |
| Bushing type | Taper Lock Bushing |
| Pitch diameter | 127.8 mm |
| Bore type | Bushed |
| Caliper diameter | 115.4 mm |
| Chain number & pitch | 12B / 3/4 in |
| Hub style | TB |
| Chain / sprocket type | Metric Roller Chain |
| Hub type | B Hub |
| Bore diameter | 12.7 mm |
| Overall width | 31.75 mm |
| Bushing size | 2012 |
| Hub diameter | 90.47 mm |
| Number of teeth | 21 |
| Hub outside diameter | 90 mm |
| Number of strands across | 1 |
| Hub projection | 15 mm |
| Material | Steel |
| Chain roller diameter | 12 mm |
| Number of hubs | 1 |
| Chain roller width | 12 mm |
| Maximum bore diameter | 47.6 mm |
| Surface treatment | Protective Coating |
| Length through bore | 31.75 mm |
| Storage dimension height | 1.25 mm |
| Bushing bore range | 1/2 to 2 in |
| Storage dimension length | 5.49 mm |
| Outside diameter | 139.6 mm |
| Storage dimension width | 5.49 mm |
| Pitch type | Single |
| Manufacturer upc number | 697950410135 |
| Hardened teeth | Hardened Teeth |
| Tooth width | 11 mm |
| Weight | 2.5 lbs |
| Tooth thickness | 11 mm |
