Overview
Mfr description
D28B20 SPK ROLLER DOUBLE B MET
- Martin metric double strand solid construction sprockets have proper spacing between chain rows.
- The sprockets are manufactured from high carbon steel.
- Martin does not stack “A” plates on multiples, but instead Martin machines teeth after the chain rows are already in place.
- These plain bore sprockets can easily be bored to a metric or standard size to fit your application.
- Keyways, set screws and harden teeth are quick alterations that can be made.
- 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
Specifications
- Chain Number & Pitch28B / 1-3/4 in
- Chain Number Pitch28B-2 / 44.45 mm
- Product TypeStock Bore Sprockets
- Chain / Sprocket TypeMetric Roller Chain
- Hub Outside Diameter178 mm
- Hub StyleB
- Number Of Teeth20
- Bore TypeReboreable
- Bore Diameter40 mm
- Number Of Strands Across2
- MaterialSteel
- Length Through Bore120 mm
- Hardened TeethNon-Hardened Teeth
- CAD Drawing
- Hub TypeB
- Outside Diameter311.767 mm
- Root Diameter256.205 mm
- Caliper Diameter256.205 mm
- Pitch Diameter284.1 mm
- Maximum Bore Diameter126 mm
- Tooth Width88 mm
- Tooth Thickness29 mm
- Chain Roller Diameter27.94 mm
- Chain Roller Width30.99 mm
- Storage Dimension Height4.724 mm
- Storage Dimension Length12.274 mm
- Storage Dimension Width12.274 mm
- Surface TreatmentProtective Coating
- Manufacturer Upc Number697950407258
- UPC_NO697950407258
- Manufacturer Catalog
- Weight93.67 lbs
Compliance & Safety Data
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