Manufacturing case
This page documents a specific made-to-drawing upper assist shaft. It is not a standard off-the-shelf replacement product.
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Cold-Forged Upper Assist Steering Shaft
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Manufacturing Case Overview
This case records one component manufactured to customer-approved requirements. The values below apply to this example only and are not universal specifications for new inquiries.
- Manufacturer
- Jinhua Machinery
- Component category
- Upper assist shaft
- Material
- Medium-carbon steel with cold-drawing pretreatment
- Manufacturing route
- Cold forging of the external spline and largest diameter, followed by turning, milling and grinding
- Heat treatment
- Stated hardness range of HRA 58–64
- Verified drawing controls
- Outer-diameter tolerance of ±0.010 mm and inner-diameter tolerance of ±0.022 mm for this component
New parts require independent review of the drawing, standard edition, datum system, material, heat treatment, quantity and inspection plan. Equivalent grades or accuracy numbers are not assumed to be interchangeable.
View Steering Shaft Manufacturing or request a manufacturing review.