Specifications
Dimensions
- Bore Diameter12.7 mm
- Bushing Size2012
- Caliper Diameter139.63 mm
- Chain Roller Diameter12.065 mm
- Chain Roller Width11.68 mm
- Hub Diameter90.47 mm
- Hub Outside Diameter89.92 mm
- Hub Projection21.31 mm
- Length Through Bore31.75 mm
- Maximum Bore Diameter47.63 mm
- Outside Diameter163.74 mm
- Overall Width31.75 mm
- Pitch Diameter151.99 mm
- Storage Dimension Height1.25 mm
- Storage Dimension Length6.45 mm
- Storage Dimension Width6.45 mm
- Tooth Thickness11.1 mm
- Weight3.50 lbs
- Width Across Tooth Sets11.1 mm
Details
- Bore TypeBushed
- Bushing TypeTaper Lock Bushing
- Chain / Sprocket TypeMetric Roller Chain
- Chain Number & Pitch12B / 3/4 in
- Chain Number Pitch12B-1 / 19.05 mm
- Hardened TeethHardened Teeth
- Hub StyleTB
- Hub TypeB
- Manufacturer Catalog
- Manufacturer Upc Number697950410173
- MaterialSteel
- Number Of Hubs1
- Number Of Strands Across1
- Number Of Teeth25
- Pitch TypeSingle
- Product TypeBushed Roller Chain Sprockets
- Surface TreatmentProtective Coating
- UPC_NO697950410173
Overview
Mfr description
12BTB25H (2012) METRIC - RIM ONLY
- 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