Martin chain #25 · E-16
25B70
Exact stock sprocket record from Martin's official Roller Chain Sprockets catalog.
Published catalog evidence
Exact source record
- Catalog number
- 25B70
- Chain designation
- 25
- Chain pitch
- 0.25"
- Number of teeth
- 70
- Material context
- all steel
- Sprocket style
- single stock sprockets
- Published row text
- 70 25B70 5 .717 B .5 1 .375 2 .75 1 .25 – – – –
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 #2525B7272 teeth · single stock sprocketsChain #2525B6060 teeth · single stock sprocketsChain #2525B60SS60 teeth · single stainless stock sprocketsChain #2525B5454 teeth · single stock sprocketsChain #2525B4848 teeth · single stock sprocketsChain #2525B4545 teeth · single stock sprocketsChain #2525B45SS45 teeth · single stainless stock sprocketsChain #2525B4040 teeth · single stock sprockets