Superior Gearbox publishes B040 (VarioDrive size 040, input shaft) as a competitor cross-reference target. Superior describes VarioDrive as functionally interchangeable with listed drives while requiring independent verification of ratings, dimensions, fit and application suitability.
This page does say
These model numbers appear together in the cited manufacturer-published cross-reference row.
Superior Gearbox identifies B040 as the target model in that published row.
The source associates the row with Match installed ratio/application and AGMA unit size VarioDrive size 040.
This page does not say
Every competitor model listed beside each other is independently certified as pairwise interchangeable.
Every installed accessory, bushing, motor mount, backstop, shaft, or screw-conveyor component will transfer unchanged.
The cross-reference removes the need to verify application torque, mounting, environment, and configuration.
Before treating it as a drop-in replacementVerification checklist
Ratio & speedVerify the actual ratio and required output speed.
Bushing / boreConfirm the installed shaft diameter and the required tapered bushing or bore arrangement.
AccessoriesCheck torque arm, backstop, motor mount, belt guard, screw-conveyor flange and drive shaft individually.
Torque & serviceConfirm continuous/peak torque, service factor, starts, shock load and thermal duty.
EnvelopeVerify center height, housing clearance and all mounting dimensions against the drawing.
EnvironmentConfirm lubricant, seals, ambient temperature, washdown/corrosion and hazardous-area requirements.