Martin 3V · D-3
1 3V 250 JA
Exact Stock QD Hi-Cap wedge sheave identity and geometry from Martin's official sheave catalog.
Published catalog evidence
Exact manufacturer record
- Catalog number
- 1 3V 250 JA
- Belt section
- 3V
- Number of grooves
- 1
- Pitch diameter
- 2.5"
- Outside diameter
- 2.5"
- QD bushing
- JA
- Catalog page
- D-3
- Published row text
- 1 3V 250 JA 2 .50 2 .50 E-1 JA 1 .25 0 .5625 0 .4375 1 0 .9375 0 .8 2 3V 250 JA E-1 JA 1 .25 0 .9688 0 .4375 1 0 .9375 1 .2
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
3V · 1 groove1 3V 235 JA2.35" PD · QD JA3V · 1 groove1 3V 265 JA2.65" PD · QD JA3V · 1 groove1 3V 220 JA2.2" PD · QD JA3V · 1 groove1 3V 280 JA2.8" PD · QD JA3V · 1 groove1 3V 300 JA3" PD · QD JA3V · 1 groove1 3V 315 JA3.15" PD · QD JA3V · 1 groove1 3V 335 JA3.35" PD · QD JA3V · 1 groove1 3V 365 SH3.65" PD · QD SH