Round Shank, Tip Processed Core Pins
Round-shank pins with special tip geometries machined to specification. For non-standard end-face profiles.
Products in This Category
JIS Standard SKD61/SKH51 Steel Straight Core Pins | OEM Available
Straight Core Pins in SKD61/SKH51 Steel with Core Pin. Engineered for plastic injection molding with custom options. Con
JIS Standard M2 Steel Straight Core Pins - Core Pin | OEM Available
Straight Core Pins in M2 Steel with Core Pin. Engineered for plastic injection molding with custom options. Contact us.
Custom Tip Geometry Options
Standard JIS-dimension shank with machined tip to your specification. Common tip profiles:
| Variant | Description | Best For | Recommendation |
|---|---|---|---|
| Chamfered Entry | Angled lead-in at the tip for guided part assembly alignment | Self-centering alignment holes, guided insertion features | Most common custom request |
| Radius / Spherical | Dome or ball-nose tip profile | Lens recesses, dome-shaped pockets, rounded internal features | Optical and consumer electronics |
| Profiled Contour | Application-specific tip shape machined to your 2D/3D drawing | Motor shaft holes, bearing seats, complex internal geometries | Provide DWG/STEP for quotation |
Do You Need a Custom Tip?
Custom tip machining adds cost and lead time. Confirm standard tips won't work:
✅ You're in the right place if:
- The internal feature has a non-flat bottom geometry (chamfer, radius, dome, complex contour)
- You have a 2D drawing or 3D model defining the required tip profile
- The feature shape cannot be achieved by post-machining the molded part
🔄 Consider switching to:
- Flat-bottom hole is sufficient? → Standard No-Tip Core Pins
- Need surface finish rather than custom geometry? → Tip-Processed Core Pins
- Feature is a boss pillar, not a custom profile? → Round Core Pins for Boss
About Round Shank Tip-Processed Pins
Certain cavity features require the core pin tip to form a specific geometry beyond a simple flat end face — a conical seat for self-centering alignment, a spherical dome for lens recesses, or a profiled contour for custom internal features.
The round shank provides standard JIS-dimension retention in the mold plate while the tip is machined to customer specification. Common tip shapes include chamfered entry bores, radius-tipped blind holes, and shaft hole profiles for motor or bearing applications.
Custom tip processing typically adds 3-5 working days to standard lead time, depending on geometry complexity. Provide a 2D drawing (PDF, DWG) or 3D model (STEP, IGES) for quotation.
Application Scenarios
See how this product type solves real engineering challenges across different industries and applications:
Visible Feature Formation with Guided Shank
Pain point: Some visible molded features require both a precision tip finish AND a guided shank fit — for example, decorative through-holes in appliance control panels.
Why it fits: Round shank tip-processed pins combine a guided shank diameter with a lapped or polished tip. The shank ensures positional accuracy while the tip delivers cosmetic surface quality.
Precision Bearing Seat Molding
Pain point: Molded bearing seats require both tight bore tolerance (for bearing press-fit) and surface finish (to prevent bearing fretting) — demanding both shank guidance and tip quality.
Why it fits: The round shank provides guided insertion for concentricity, while tip processing ensures the bearing contact surface meets Ra < 0.4 µm requirements.
Related Categories
Frequently Asked Questions
What custom tip shapes are available?+
Compatible with standard plate bores?+
Lead time for custom tip?+
Engineering Resources
Case Studies
Need a Custom Quote?
Send your specifications — material, dimensions, quantity — and receive a quote. MOQ: 1 piece. Custom dimensions available.