Martin 8V · D-11
12 8V 1250 M
Exact Stock QD Hi-Cap wedge sheave identity and geometry from Martin's official sheave catalog.
Published catalog evidence
Exact manufacturer record
- Catalog number
- 12 8V 1250 M
- Belt section
- 8V
- Number of grooves
- 12
- Pitch diameter
- 12.5"
- Outside diameter
- 12.5"
- QD bushing
- M
- Catalog page
- D-11
- Published row text
- 10 8V 1250 J 12 .5 12 .5 A-1 J 4 .5 2 .375 3 .5625 4 .5 4 .75 122 .0 12 8V 1250 M A-1 M 5 .5 2 .5 3 .9375 6 .75 4 .625 161 .0
Verification boundary
What still needs to match
Belt and groovesConfirm the exact 3V, 5V, or 8V belt section, groove count, belt construction, and matched-set requirements.
Bushing and shaftVerify the QD bushing size, finished bore, shaft diameter, key/keyway, bushing orientation, and installation torque.
GeometryConfirm pitch diameter, outside diameter, sheave width, hub projection, guard clearance, and center-distance constraints.
Drive dutyCheck motor speed, sheave RPM, horsepower, service factor, belt speed, alignment, balance, environmental limits, and current manufacturer ratings.
Related catalog sheaves
Same section and groove count
8V · 12 grooves12 8V 1320 M13.2" PD · QD M8V · 12 grooves12 8V 1400 M14" PD · QD M8V · 12 grooves12 8V 1500 M15" PD · QD M8V · 12 grooves12 8V 1600 M16" PD · QD M8V · 12 grooves12 8V 1700 M17" PD · QD M8V · 12 grooves12 8V 1800 M18" PD · QD M8V · 12 grooves12 8V 1900 N19" PD · QD N8V · 12 grooves12 8V 2000 N20" PD · QD N