PROFILE DEVELOPMENT / SUJ2

SUJ2 engine timing-chain trapezoidal pin

This case presents trapezoidal profile wire SUJ2 for trapezoidal pins used in engine timing chains. The page includes 4 photographs of samples and a 24-second conceptual assembly video showing the pin, timing chain assembly, and its position within the engine; cross-section geometry and subsequent processing requirements are to be confirmed per drawing.

Material identificationSUJ2

Section CategoryTrapezoidal

Recorded nominal dimensions / mmConfirm according to the drawing

Geometric Focus Points

Top and bottom widths, height, side angles, and fillets

Angle, parallelism of the base edge, and cross-sectional orientation

Confirm technical requirements based on the drawing

Conceptual illustration of trapezoidal pin, timing chain, and engine positioning.

24-second silent conceptual assembly illustration. Gold highlighting is used solely to emphasize the pin and does not represent an actual coating. Pin length, pitch, laminations, hole geometry, internal mating surfaces, tooth profile, and sprocket proportions have not been validated against physical dimensions; the engine section uses 2D sectional mapping for positional reference only and does not constitute validated fitment for any specific chain type, kit, or engine.

Cross-sectional features and review points

Wire for trapezoidal pins must be specified with distinction between top and bottom bases, cross-sectional height, and two inclined sides; side angles and corner radii jointly define the profile contour. The product name indicates application orientation; specific chain type, part dimensions, and delivery form remain subject to confirmation per project drawings.

Drawings and measurement requirements

Recommend clarifying upper/lower base nomenclature, dimensional tolerances, height datum, sidewall angles, and fillet requirements—do not conflate base width with slanted side length.

Delivery and subsequent processing

SUJ2 is the raw material designation; standard revision level, heat treatment, hardness, and surface requirements must be confirmed separately per project and cannot be inferred from grade alone.

Documentation basis and scope of confirmation

Data originates from this case’s catalog and internal sample photographs; catalog dimensions are nominal values, and photographs do not substitute formal inspection reports. Material standards, mechanical properties, heat treatment, supply conditions, and acceptance criteria must be confirmed per project.

Photo recording

SUJ2 engine timing-chain trapezoidal pin Sample performance 1 — SUJ2 engine timing-chain trapezoidal pin · 1 / 4

SUJ2 engine timing-chain trapezoidal pin Sample performance 2 — SUJ2 engine timing-chain trapezoidal pin · 2 / 4

SUJ2 engine timing-chain trapezoidal pin Sample performance 3 — SUJ2 engine timing-chain trapezoidal pin · 3 / 4

SUJ2 engine timing-chain trapezoidal pin Sample performance 4 — SUJ2 engine timing-chain trapezoidal pin · 4 / 4

Development Q&A

For trapezoidal wire, must both top and bottom base widths be specified?

Specify upper base, lower base, height, and side relationships; the specific dimensions and angles used for definition must form a consistent, measurable datum in the drawing.

Has heat treatment or hardness been confirmed for the SUJ2 designation?

No. Material identification, heat treatment, hardness, mechanical properties, and delivery condition are distinct items and must be confirmed individually in technical specifications.

Related cross-sectional cases

Material data and technical communication

Technical requirements must include cross-sectional drawing and revision, critical tolerances, subsequent processing steps, delivery form, and inspection requirements.

View material selection documentation Submit technical requirements ↗

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