8 8V 2120 TB

Exact Stock Taper Bushed Hi-Cap wedge sheave identity and published geometry from Martin's official catalog.

Section8VGrooves8Pitch diameter21.2"OD21.2"Taper bushing5050Official source ↗

Published catalog evidence

Exact manufacturer record

D-28

Catalog number: 8 8V 2120 TB
Belt section: 8V
Groove count: 8
Pitch diameter: 21.2"
Outside diameter: 21.2"
Taper bushing: 5050
Published row: 6 8V 2120 TB 21 .2 21 .2 A-3 5050 5 .5 5 1 .625 246 .0 8 8V 2120 TB A-3 5050 5 1 5 3 .375 246 .0

Verification boundary

Do not infer interchange

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.

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