8 5V 1090 TB

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

Section5VGrooves8Pitch diameter10.9"OD10.9"Taper bushing3535Official source ↗

Published catalog evidence

Exact manufacturer record

D-26

Catalog number: 8 5V 1090 TB
Belt section: 5V
Groove count: 8
Pitch diameter: 10.9"
Outside diameter: 10.9"
Taper bushing: 3535
Published row: 6 5V 1090 TB 10 .9 10 .9 A–1 3535 3 .5 – 3 .5 .9375 60 .0 8 5V 1090 TB A–1 3535 3 .5 1 3 .5 1 .3125 68 .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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