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RT40 → M45 replacement

Manufacturer comparison guide

Varvel RT40 replacement

Winsmith M45 appears in the same manufacturer-published cross-reference row as Varvel RT40 at Match installed ratio/application · Winsmith ALSQ size M45.

Published targetM45WinsmithMatch installed ratio/application

Evidence publisherWinsmithEvidence typeComparison guideReviewedSep 21, 2026Open source ↗

Replacement referenceDirectional lookup

Existing / searched modelVarvelRT40Open source-model record →

Published target modelWinsmithM45Open target specs →

What the source establishesComparison guide

Winsmith publishes ALSQ M45 in its 2025 interchange guide beside the listed competitor models. The guide distinguishes 100% interchangeable mounting from slightly different mounting; verify the source key, dimensions, ratio and application before ordering.

Evidence meaning

The manufacturer publishes these models together in an interchange/comparison guide.

Varvel RT40 and Winsmith M45 are tied by the published source at Match installed ratio/application · Winsmith ALSQ size M45.

Evidence boundary

The guide may include mounting or configuration differences; confirm the source key and exact dimensions before substitution.

Published target specifications3 model-level fields

WinsmithM45Aluminum Square (ALSQ)

Full model record →

Published torque: 416 lbf-inSource ↗
Interchange source: Winsmith 2025 Aluminum and Helical Interchange GuideSource ↗
Published size: ALSQ M45Source ↗

Other models in the same published row6

Boston GearF718Same Match installed ratio/application published row →Dodge17Same Match installed ratio/application published row →Grove GearEL818Same Match installed ratio/application published row →Morse154QSame Match installed ratio/application published row →MotovarioNMRV040Same Match installed ratio/application published row →TranstecnoCM040Same Match installed ratio/application published row →

Replacement verification checklistBefore purchase

RatioConfirm nominal and actual ratio against required output speed.

Shaft / boreMeasure the driven shaft and verify bushing or bore configuration.

InputCheck high-speed shaft, motor frame, sheave and input interface.

MountingCompare center height, footprint, torque-arm geometry and housing clearances.

AccessoriesDo not assume existing backstops, motor mounts, belt guards or screw-conveyor hardware transfer.

DutyRecheck torque, service factor, shock, starts per hour, temperature and lubrication.

Open M45 specifications Full published row Field checklist Source document ↗