Buyer guide
Planetary Gearbox Selection: Questions Beyond Ratio
Select a planetary gearbox by duty, interface, load support, environment and acceptance method—not ratio alone.
Engineering guides
Epicyclic Gearing Knowledge Base
Practical buyer guides covering planetary gear relationships, internal ring gears, interfaces, duty definition and inspection planning.
Buyer guide
Internal Ring Gear RFQ: Geometry, Datum and Inspection Questions
Prepare an internal ring gear RFQ with mating gear data, installation datums and a practical inspection basis.
Buyer guide
How to Specify an Epicyclic Gear Set for Quotation
A buyer checklist for motion relationship, duty, geometry, interfaces, material and inspection inputs.
Use the guides to prepare a reviewable RFQ
Motion relationship
Identify the input, output and restrained member before discussing ratio or stage arrangement.
Interfaces and duty
Document mounting, shafts, external loads, speed range, operating cycle and environmental conditions.
Verification
Agree tooth, datum, runout, contact, backlash and functional acceptance methods before production.
Engineering enquiry
Turn the checklist into an RFQ package
Attach the available drawing and state which inputs still need engineering confirmation.