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Metric Roller Chain Idler Sprockets

Metric idler sprockets are utilized on Metric Roller Chain and are designed to direct and carry a roller chain in a desired direction. Because it is an idler it requires the energy or "pull" of a drive sprocket. Using a high-quality bearing or material in an idler sprocket means less friction in your setup with better energy transfer while using less energy. Both our metric and ANSI idler sprockets are made to out-last and out-perform the competition. Below are the standard metric idler sprockets but different sizes, tooth counts, and configurations are available upon request.

Metric Idler Sprocket Size Chart


Sprocket Size Tooth Count (OD) (N) (T) (ID) (BD) (H) (L) Weight (kg)
05BB23 23 58.75mm 62.0mm 7.0mm 16mm 40mm 18.3mm 12mm 0.14
06BB21 21 63.9mm 68.0mm 5.3mm 16mm 40mm 18.3mm 12mm 0.15
081BB18 18 73.1mm 78.9mm 7.0mm 16mm 40mm 18.3mm 12mm 0.20
083BB16 16 65.1mm 70.9mm 7.0mm 16mm 40mm 18.3mm 12mm 0.20
08BB16 16 65.1mm 69.5mm 7.2mm 16mm 40mm 18.3mm 12mm 0.20
08BB18 18 73.1mm 78.0mm 7.2mm 16mm 40mm 18.3mm 12mm 0.20
10BB15 15 86.4mm 93.0mm 9.1mm 16mm 40mm 18.3mm 12mm 0.20
10BB17 17 86.4mm 93.0mm 9.1mm 16mm 40mm 18.3mm 12mm 0.30
12BB15 15 91.6mm 100.0mm 11.1mm 16mm 40mm 18.3mm 12mm 0.40
16BB12 12 98.1mm 109.0mm 16.2mm 20mm 47mm 17.7mm 14mm 0.65
20BB13 13 132.7mm 148.0mm 18.5mm 25mm 52mm 25.4mm 15mm 0.73

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05BB23 Idler Sprocket 06BB21 Idler Sprocket 081BB18 Idler Sprocket 083BB16 Idler Sprocket
08BB16 Idler Sprocket 08BB18 Idler Sprocket 10BB15 Idler Sprocket 10BB17 Idler Sprocket
12BB15 Idler Sprocket 16BB12 Idler Sprocket 20BB13 Idler Sprocket
   
 
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