Martin chain #35-2 · E-25
D35BTB21H
Exact stock sprocket record from Martin's official Roller Chain Sprockets catalog.
Published catalog evidence
Exact source record
- Catalog number
- D35BTB21H
- Chain designation
- 35-2
- Chain pitch
- 0.375"
- Number of teeth
- 21
- Material context
- all steel
- Sprocket style
- double-strand stock sprockets
- Published row text
- 21 D35BTB21H 1008 2 .713 2 .516 1 .875 2 .063 B 1 .4 0 .3
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 #35-2D35B21H21 teeth · double-strand stock sprocketsChain #35-2D35BTB20H20 teeth · double-strand stock sprocketsChain #35-2D35BTB22H22 teeth · double-strand stock sprocketsChain #35-2D35B20H20 teeth · double-strand stock sprocketsChain #35-2D35B22H22 teeth · double-strand stock sprocketsChain #35-2D35BTB19H19 teeth · double-strand stock sprocketsChain #35-2D35B19H19 teeth · double-strand stock sprocketsChain #35-2D35B23H23 teeth · double-strand stock sprockets