Description
Internal ring gears (annulus gears) for planetary gear sets, reducers and custom epicyclic drive assemblies.
Construction and engineering scope
The ring gear meshes internally with all planet gears and often forms part of the load-carrying housing path. Internal tooth quality, roundness and mounting fit are critical.
Additional engineering views
Technical parameters
| Internal tooth count | by matched planetary geometry |
|---|---|
| Gear form | internal spur or helical |
| Module / DP | by drawing |
| Mounting | integral housing, bolted ring or shrink/press fit by design |
| Material / heat treatment | alloy steel or application-specific material |
| Inspection | internal gear geometry, runout, hardness and fit dimensions |
Typical configurable options are shown for RFQ planning only. Final values are fixed by the approved drawing, material specification, heat treatment, ratio, duty and inspection plan.
Applications and selection
Send the complete ring dimensions, tooth count, module/DP, pressure angle, mating planet data and mounting arrangement. If the ring is integrated with a housing, provide the full interface drawing.
Customization options
Engineering review can cover tooth count and ratio, spur or helical geometry, material and heat treatment, motor or shaft interface, output flange or spline, bearing arrangement, lubrication, sealing, backlash class and inspection documentation. Features are confirmed against the approved drawing rather than assumed from a similar model.
Installation and maintenance
Check shaft alignment, pilot fit, fastener grade and tightening method before commissioning. Do not exceed the confirmed continuous or peak torque, radial load, axial load or input speed. For replacement work, verify the mounting drawing and output interface before ordering.
Quality and inspection
Inspection planning can include material traceability, hardness, tooth geometry, runout, dimensional inspection and assembly checks according to the RFQ and approved quality plan. Ask for the required inspection level before quotation.
FAQ
Can you manufacture from a drawing or sample?
Yes, the engineering review can start from a drawing, sample, tooth data or a complete gearbox identification. Final feasibility is confirmed after dimensional and material review.
What information is needed for a replacement?
Send model or nameplate, quantity, ratio, motor or input speed, output torque or duty, shaft/flange dimensions, mounting drawing and clear photos. For individual gears, add tooth count, module or DP, pressure angle, face width and material/heat-treatment requirements if known.
