Multi-Lobe Formed Stamped Parts

Name: Multi-Lobe Formed Stamped Parts
SKU: 125

Multi-Lobe Formed Stamped Parts from XIAYI are a matched pair of curved bowl washers that split road impact across two layers instead of denting one flat plate. This manufacturer pairs sets to 0.02 mm arc-depth symmetry, so they seat as one on your assembly line.

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Product Description

The Multi-Lobe Formed Stamped Parts kit is a matched pair of large and small bowl-shaped washers, integrally deep-drawn with multi-lobe curved surfaces. Stacked together they wrap the shock buffer rubber and split road impact across two curved layers — where a single flat washer concentrates load, dents, and passes chassis noise straight through.

Double-Layer Load Diversion

Structure	Advantage Over Flat Washers
Small inner centering washer + large outer holding washer	Double curved surfaces disperse lateral impact simultaneously — no concentrated load, no dent deformation
Smooth arc stress-free bowl molding	No sharp corners, no stress concentration, no hidden stamping micro-cracks
Widened outward flanges	Even force distribution against chassis sheet metal — no warping or edge collapse
Coaxial matched central holes, one-step stamped	High unified concentricity restrains the piston rod without eccentric compression

Tolerance Standard for the Matched Pair

Inspection Item	Tolerance	Risk if Out of Tolerance
Concentricity of matched central holes	≤ 0.025 mm	Unilateral oil seal compression, leakage within 20,000 km
Full-circle washer wall thickness uniformity	≤ 0.02 mm	Thin-zone collapse under bump squeeze
Bowl arc depth symmetry	±0.02 mm	Suspended assembly clearance, sliding and rattle
Outer flange end face flatness	≤ 0.02 mm	Positioning drift, unbalanced damping flow

Bench-Verified Durability

Load: ST14 deep-drawn steel (elongation ≥ 40%) forms arc bowls free of micro-cracks — static lateral squeeze capacity far exceeds single flat washers
Fatigue: million-cycle lateral vibration — no bowl collapse or crack, matched-kit concentricity drift ≤ 0.02 mm
Thermal: 1000 hot-cold cycles (−40 ℃ to +110 ℃) — no springback on flanges or bowls
Corrosion: full-surface zinc coverage by steel grade, adhesion verified by 3M tape pull — no rust particles into damping oil
Structure: seamless one-piece stamping; double-layer bowl locking cuts comprehensive failure rate of deformation, leakage and rattle by 70%

FAQ

Q: We currently use flat washers and hear persistent chassis noise. Will the bowl pair fix it?

A: Flat washers have weak buffering and concentrate load — the noise source. The double-layer bowl diverts load across two curved surfaces for long-term silent buffering, and it is our standard recommendation for noise complaints.

Q: Is the pair supplied matched, or do we assemble from loose stock?

A: Factory-matched pairs — arc depth symmetry is held to ±0.02 mm within the pair so the layers seat tightly, with standardized fitting clearance for automatic lines.

Replace flat washers with the bowl pair — request a matched sample set

Ningbo XiaYi Electromechanical Tech Co., Ltd. deep-draws matched bowl washer pairs for shock top mounts. Send your stack dimensions for a pair-matched quotation.

About XIAYI pair matching: large and small bowls are dimension-matched at final inspection as a set — a pair that seats together in the factory seats together on the vehicle.

Related Category

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Contact Info

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Address

No.209 Lane 520 Tongning Rd,Qianjiang Street,Jiangbei District, Ningbo City, Zhejiang Province, China
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Tel

+86-13586885132
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Email

sales@xiayiparts.com

Get a Tailored Quote for Your Shock Absorber Parts

Why Global Buyers Choose Ningbo Xiayi:
✓ IATF 16949 Certified — Defect rate strictly controlled below 0.1%.
✓ Full-Category Supply — Pistons, rods, springs, stampings & rubber parts.
✓ R&D Support — Custom powder metallurgy formulas & 7-10 day rapid prototyping.
✓ Proven Capacity — 50 million core pistons produced annually for global OEMs.

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