MARTIN SPROCKET & GEAR 20BTB21H
MARTIN SPROCKET & GEAR
MARTIN SPROCKET & GEAR 20BTB21H
20BTB21H PART NUMBER
Tapered Bushed Sprocket - Metric - Taper Lock Bushing, 20B / 1-1/4 in, 21 Teeth, 2517 Bushing, Steel Material
QTY QUOTEMARTIN SPROCKET & GEAR - MARTIN SPROCKET & GEAR 20BTB21H
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
Precise machining and processes ensure consistent finish and high quality
Bores are concentric to pitch line, minimizing run out
Chain rows are parallel and precisely spaced to increase longevity of sprocket and chain
Interchangeable with other manufacturers’ Taper bushings
SPECIFICATIONS
| Bushing Type | Taper Lock Bushing |
|---|---|
| Tooth Thickness | 19 mm |
| Bore Type | Bushed |
| Pitch Diameter | 213 mm |
| Chain Number & Pitch | 20B / 1-1/4 in |
| Caliper Diameter | 193.4 mm |
| Chain / Sprocket Type | Metric Roller Chain |
| Hub Style | TB |
| Bore Diameter | 12.7 mm |
| Hub Type | B Hub |
| Bushing Size | 2517 |
| Hub Outside Diameter | 107 mm |
| Number Of Teeth | 21 |
| Hub Projection | 26 mm |
| Number Of Strands Across | 1 |
| Chain Roller Diameter | 19 mm |
| Material | Steel |
| Chain Roller Width | 20 mm |
| Number Of Hubs | 1 |
| Surface Treatment | Protective Coating |
| Maximum Bore Diameter | 57.2 mm |
| Storage Dimension Height | 1.75 mm |
| Length Through Bore | 44.45 mm |
| Storage Dimension Length | 9.11 mm |
| Bushing Bore Range | 1/2 to 2-1/2 in |
| Storage Dimension Width | 9.11 mm |
| Outside Diameter | 233.7 mm |
| Manufacturer Upc Number | 697950411460 |
| Pitch Type | Single |
| Hardened Teeth | Hardened Teeth |
| Weight | 10.543 lbs |
| Tooth Width | 19 mm |
