Martin 3V · D-3
2 3V 690 SDS
Exact Stock QD Hi-Cap wedge sheave identity and geometry from Martin's official sheave catalog.
Published catalog evidence
Exact manufacturer record
- Catalog number
- 2 3V 690 SDS
- Belt section
- 3V
- Number of grooves
- 2
- Pitch diameter
- 6.9"
- Outside diameter
- 6.9"
- QD bushing
- SDS
- Catalog page
- D-3
- Published row text
- 1 3V 690 SH 6 .90 6 .90 D-3 SH 1 .6875 0 .5625 – 1 .25 0 .0625 4 .5 2 3V 690 SDS D-3 SDS 2 0 .3125 0 .3125 1 .315 0 .0313 6 .6
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 · 2 grooves2 3V 650 SDS6.5" PD · QD SDS3V · 2 grooves2 3V 600 SH6" PD · QD SH3V · 2 grooves2 3V 800 SDS8" PD · QD SDS3V · 2 grooves2 3V 560 SH5.6" PD · QD SH3V · 2 grooves2 3V 530 SH5.3" PD · QD SH3V · 2 grooves2 3V 500 SH5" PD · QD SH3V · 2 grooves2 3V 475 SH4.75" PD · QD SH3V · 2 grooves2 3V 450 SH4.5" PD · QD SH