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28BTB21H (3020) Taper Bushed Metric Roller Chain Sprocket

$560.50 Each


  • Typically ships in: 1 day
  • Weight: 29.5 lb
  • Free shipping on orders over $20

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Additional Description

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.
Material Steel Width across Teeth/ Rows 29.440 mm
Chain Number 28B-1 Hub Configuration B
Chain Pitch 44.450 mm Hub Outside Diameter 133.000 mm
Number of Chain Rows 1 Construction Detail Welded
Number of Teeth 21 Bore Type Bushed TB
Outside Diameter 325.860 mm Bushing Part Number 3020
Pitch Diameter 298.240 mm Bushing Min Bore Size 23.810 mm
Single Strand Tooth Thickness 29.440 mm Bushing Max Bore Size 76.200 mm
Storage Dimension Length 12.809 in. Weight 29.48 lbs.
Storage Dimension Width 12.809 in. Individually Packaged No
Storage Dimension Height 2.000 in.


Pitch 44.450 mm
Number Of Teeth 21
Outside Dia 325.860 mm
Material Steel
Pitch Diameter 298.240 mm

Return policy

Item must be unused.

Item must be in it's original package.

Restocking, shipping and handling fees may apply to any return with this manufacturer.

For more information please consult


Product's availability

State of California Proposition 65 Product Warning