3 5V 1870 TB

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

Section5VGrooves3Pitch diameter18.7"OD18.7"Taper bushing3535Official source ↗

Published catalog evidence

Exact manufacturer record

D-24

Catalog number: 3 5V 1870 TB
Belt section: 5V
Groove count: 3
Pitch diameter: 18.7"
Outside diameter: 18.7"
Taper bushing: 3535
Published row: 2 5V 1870 TB 18 .7 18 .7 C–3 3020 3 – 2 .3125 50 .1 3 5V 1870 TB B–3 3535 3 .5 – 3 .5 1 .125 65 .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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