Martin 3V · D-21
2 3V 650 TB
Exact Stock Taper Bushed Hi-Cap wedge sheave identity and published geometry from Martin's official catalog.
Published catalog evidence
Exact manufacturer record
- Catalog number
- 2 3V 650 TB
- Belt section
- 3V
- Groove count
- 2
- Pitch diameter
- 6.5"
- Outside diameter
- 6.5"
- Taper bushing
- 1610
- Published row
- 1 3V 650 TB 6 .5 6 .5 B-1 1610 1 .625 – 1 0 .40625 6 .0 2 3V 650 TB A-1 1610 1 .625 – 1 – 8 .0
Verification boundary
What still needs to match
Belt and groovesConfirm exact belt section, groove count, and matched-set requirements.
Bushing and shaftVerify taper-bushing number, finished bore, shaft, keyway, and installation.
GeometryCheck pitch diameter, OD, sheave width, alignment, guard clearance, and center distance.
Drive dutyConfirm RPM, horsepower, service factor, balance, environment, and current manufacturer limits.
Related catalog sheaves
Same section and groove count
3V · 2 grooves2 3V 690 TB6.9" PD · bushing 16103V · 2 grooves2 3V 600 TB6" PD · bushing 16103V · 2 grooves2 3V 560 TB5.6" PD · bushing 16103V · 2 grooves2 3V 530 TB5.3" PD · bushing 16103V · 2 grooves2 3V 500 TB5" PD · bushing 16103V · 2 grooves2 3V 800 TB8" PD · bushing 25173V · 2 grooves2 3V 475 TB4.75" PD · bushing 16103V · 2 grooves2 3V 450 TB4.5" PD · bushing 1610