01 / INERTIA
Lower rotating mass
Hollow geometry and material distribution must reduce inertia without weakening critical journals or interfaces.
A servo axis can be electrically accurate and still lose performance through the mechanical stack. Shaft inertia, runout, welded-joint distortion and interface fit can show up as vibration, noise or unstable positioning.
YUBAO manufactures custom motor shafts, hollow shafts, friction-welded shafts, pinion gears and compact interface parts for servo motors and automation drives.
Send a Servo Motor DrawingServo motor parts are small, but the mechanical errors are not. The process route has to protect the features that influence acceleration, feedback accuracy and assembly stability.
Hollow geometry and material distribution must reduce inertia without weakening critical journals or interfaces.
Bearing seats, encoder references and gear features need a controlled datum chain from machining through final inspection.
Non-standard threads, shoulders and sleeves must assemble cleanly without creating axial or radial error.
The approved sample only matters when the same machining, welding, treatment and inspection route can be repeated.
Five drawing-based component groups focused on inertia, runout, torque transfer and compact assembly interfaces.
Stepped shafts, keyways, threads, splines and special interfaces machined around your motor and feedback layout.
View custom shafts →Low-inertia shaft structures with wall thickness, journals and datum features reviewed as one production route.
View hollow shafts →Different materials or geometries combined by welding, followed by machining and inspection of the critical finished features.
View welded shafts →Compact straight or helical gear features where tooth quality, runout and surface condition affect motion performance.
View gear components →Drawing-specific sleeves and adapters for encoder, brake, coupling or compact motor assembly interfaces.
View interface parts →Turning, hollow geometry, welding, gear cutting, grinding and treatment are planned around the same datum and assembly requirements.
01For stepped shafts, threads, shoulders and compact feedback interfaces.
02For hollow shafts and internal geometry where wall control and concentricity matter.
03For combined material or geometry routes followed by finish machining.
04For pinions, integrated gear shafts and small gear discs.
05For journals, encoder references and surfaces tied to rotational accuracy.
06For wear, hardness, dimensional stability and welded-blank protection requirements.
Inspection follows the features that influence feedback accuracy, vibration, assembly fit and repeat production.
Certified systems support controlled OEM production.
Datums, journals and concentric relationships are checked.
Drawing-critical interfaces and fit features are verified.
Material and process records stay linked to the project.
Inspection records support repeat orders and quality follow-up.
Early review connects the motor layout, feedback interfaces and manufacturing route before a light-looking design becomes difficult to repeat.
Each stage closes a specific mechanical risk before the project moves forward.
Application, part data and annual demand.
Scope, process, risks and quotation.
Controlled machining and process execution.
Agreed dimensions, records and assembly checks.
Protected packing and delivery coordination.
Production follow-up and ongoing quality control.
Send the drawing or sample together with speed, torque, duty cycle, target inertia, encoder or brake interface data, material, treatment, quantity and estimated annual demand.
Yes. Hollow shafts are manufactured to the drawing, with wall thickness, datum structure, machining access and critical fit requirements reviewed before sampling.
The route can include joint-location review, welding control, post-weld machining and inspection of the finished datum and runout features.
Yes. Projects can begin with engineering review, samples or a controlled trial batch before repeat production is approved.
YUBAO can manufacture drawing-defined shafts, sleeves and adapter features. Encoders, brakes and electronic control components are not manufactured by YUBAO.
The material, heat treatment and surface-protection route is selected from the drawing, speed, load, wear and dimensional-stability requirements.
Send your drawing, sample or interface requirements. We will review inertia-sensitive geometry, datum relationships and the manufacturing route before preparing a useful response.