Martin 3V · D-4
4 3V 412 SH
Exact Stock QD Hi-Cap wedge sheave identity and geometry from Martin's official sheave catalog.
Published catalog evidence
Exact manufacturer record
- Catalog number
- 4 3V 412 SH
- Belt section
- 3V
- Number of grooves
- 4
- Pitch diameter
- 4.12"
- Outside diameter
- 4.12"
- QD bushing
- SH
- Catalog page
- D-4
- Published row text
- 3 3V 412 SH 4 .12 4 .12 A-1 SH 1 .6875 0 .125 0 .6875 1 .25 0 .0625 3 .3 4 3V 412 SH A-1 SH 1 .6875 0 .25 0 .8125 1 .25 0 .3438 3 .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 · 4 grooves4 3V 450 SDS4.5" PD · QD SDS3V · 4 grooves4 3V 365 SH3.65" PD · QD SH3V · 4 grooves4 3V 475 SDS4.75" PD · QD SDS3V · 4 grooves4 3V 335 SH3.35" PD · QD SH3V · 4 grooves4 3V 500 SDS5" PD · QD SDS3V · 4 grooves4 3V 315 SH3.15" PD · QD SH3V · 4 grooves4 3V 300 SH3" PD · QD SH3V · 4 grooves4 3V 530 SDS5.3" PD · QD SDS