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  • July 09, 2026

Looking to replace SEW, Flender, Nord, or Bonfiglioli S Series?


Why consider an alternative?

30-50% cost savings compared to original brands

Weeks instead of months lead time

Direct drop-in replacement – no equipment modification

SEW S Series equivalent models:

S37, S47, S57, S67, S77, S87, S97 – directly replaceable

Drop-in replacement checklist:

Check ItemWhy It Matters
Mounting dimensionsBolt holes, shaft diameter, center height must match


RatioCheck nameplate for exact ratio
Output torqueMust meet or exceed original
Input flangeMust match your motor (B5/B14)
Mounting positionM1-M6 must be identical

What to send the supplier for fastest match:

Photo of the nameplate – model, ratio, serial number

Application description – what equipment it‘s on

Any issues with the current unit – helps identify upgrade needs

SA87 hollow shaft gearbox.png

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