Starting torque finds the weakest interface
Peak torque reaches journals, splines, shoulders and gear teeth before speed can smooth the load. Those interfaces need the right geometry, engagement and material support from the beginning.
Forklift drives, lift platforms and electric pallet trucks ask more from their transmission parts than simple rotation. They carry load, absorb start-stop shock and keep working through long shifts.
YUBAO manufactures the custom shafts, spline shafts, gear shafts, close-fit sleeves and selected gearbox units behind compact material handling motors.
Send Your Drive Drawing
Custom Shaft
Spline Shaft
Gear Shaft
Bushing / Shaft Sleeve
Gearbox UnitA material handling drive is judged at its worst moment: a loaded start, a sudden reversal, a hot shift or an impact that travels through the entire transmission.
We review the drawing around those moments, then plan the material, fits, gear geometry and finishing sequence so the component remains predictable in the machine—not only on the inspection bench.
Peak torque reaches journals, splines, shoulders and gear teeth before speed can smooth the load. Those interfaces need the right geometry, engagement and material support from the beginning.
Repeated forward-reverse cycles expose unstable fits, excessive backlash and runout. Datum relationships must stay controlled so torque changes direction without unpredictable shock.
Bearing seats, splines, gear features and mounting shoulders often share one short shaft. The manufacturing route must protect function without adding size the assembly cannot accept.
Surface finish, hardness and alignment must remain stable beyond the first sample. Process records and repeatable inspection help later batches perform like the approved part.
From the motor shaft to the gearbox subassembly, every component is planned around the same load path, datums and mating interfaces in your drawing.
Input, intermediate and output shafts built around the bearing seats, shoulders, threads and interfaces that locate the assembly.
View custom shafts →External and internal splines controlled for profile, engagement, fit and runout so torque transfers without avoidable play.
View spline shafts →Spur or helical gear features integrated with the shaft to reduce interfaces and make better use of a compact drive envelope.
View gear shafts →YUBAO-made shafts and gears combined with specified purchased parts within a clearly agreed assembly and inspection scope.
View gearbox units →Close-fit sleeves and related parts used for positioning, spacing, surface protection and encoder mounting.
View shaft components →Turning establishes the datums. Gear and spline cutting carry them forward. Heat treatment, grinding and inspection protect the relationships the finished drive depends on.
01Turning establishes bearing seats, shoulders, grooves and the datum surfaces used by later operations.
02Hobbing or shaping generates the tooth form while preserving its relationship to the shaft datums.
03OD or centerless grinding brings critical diameters to final size, finish and runout requirements.
04Spline profile, engagement length and fit are coordinated with the mating component and torque path.
05Material and treatment are coordinated around strength, wear resistance and dimensional stability.
06Selected gearbox projects can include defined assembly, fit confirmation and agreed functional checks.
A drive component is only useful when the finished part matches the print and enters the assembly without surprises. YUBAO inspects the features that govern fit, torque transfer, alignment and service consistency—not dimensions chosen simply because they are easy to measure.
Control begins with the datum plan and follows the part through machining, heat treatment and final verification. The inspection scope is agreed around the application and the drawing, so engineering and purchasing teams receive evidence they can use.
Journals, shoulders, bores, splines and gear features are checked in the relationships that matter to assembly.
Profile, lead, pitch, runout and backlash-related features are verified where the drawing or application requires them.
Material certificates, hardness results and heat-treatment records can remain linked to the production batch.
In-process checks, final inspection, CMM measurement and gear inspection are selected to match part risk.
Retained records and batch traceability give later orders a controlled reference to the approved sample.
ISO 9001 and IATF 16949 support controlled OEM production and documented follow-up.
A short review at the start can prevent a long chain of tooling, assembly and repeat-order problems. YUBAO works with OEM teams on forklift drives, industrial motors, AGV equipment and automated material handling systems.
Each checkpoint answers a practical question before the next one begins, keeping engineering, quality and purchasing aligned on what has been confirmed.
Drawing, application, duty and expected demand.
Scope, material, process, inspection and quotation.
Tooling, machining and controlled process execution.
Measurements, records and agreed assembly checks.
Protected packing, documents and delivery coordination.
Approved route, retained records and ongoing quality control.
Send the drawing or sample together with the application, load or torque, operating speed, installation space, material, heat treatment, quantity and estimated annual demand.
Quality control can include incoming material checks, in-process inspection, CMM measurement, gear inspection, final inspection and batch traceability according to the project.
Yes. Projects can begin with engineering review, samples or a trial batch before repeat production is approved.
The material and treatment route is selected from the drawing, load, wear conditions and dimensional requirements rather than from a one-size-fits-all list.
Lead time depends on part complexity, tooling, material, heat treatment, inspection requirements, sample approval and order quantity.
YUBAO supports selected gearbox projects within an agreed scope. Standard bearings and seals may be specified purchased parts; YUBAO does not manufacture rolling bearings.