Martin chain #25 · E-16
25B12
Exact stock sprocket record from Martin's official Roller Chain Sprockets catalog.
Published catalog evidence
Exact source record
- Catalog number
- 25B12
- Chain designation
- 25
- Chain pitch
- 0.25"
- Number of teeth
- 12
- Material context
- all steel
- Sprocket style
- single stock sprockets
- Published row text
- 12 25B12 1 .083 B .25 .375 .625 .5 .06 – – – –
Verification boundary
What still needs to match
Chain and strand countConfirm ANSI/ISO chain standard, pitch, roller width, and simplex/duplex/triplex arrangement.
Bore and hub systemVerify stock/finished bore, QD or taper-bushing size, hub style, keyway, setscrews, and shaft fit.
Material and teethConfirm steel/stainless material, hardened-tooth suffixes, corrosion requirements, and tooth count.
DutyCheck speed, horsepower, alignment, lubrication, shock loading, and current manufacturer limits.
Related catalog parts
Same chain family, nearby tooth count
Chain #2525B12SS12 teeth · single stainless stock sprocketsChain #2525B1111 teeth · single stock sprocketsChain #2525B1313 teeth · single stock sprocketsChain #2525B11SS11 teeth · single stainless stock sprocketsChain #2525B13SS13 teeth · single stainless stock sprocketsChain #2525B1010 teeth · single stock sprocketsChain #2525B1414 teeth · single stock sprocketsChain #2525B10SS10 teeth · single stainless stock sprockets