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Precision Machined Locating Pins: Engineered for Absolute Alignment
At Xierge Precision Machinery Co., Ltd., we manufacture high-precision locating pins that serve as the critical foundation for accurate alignment in automotive assemblies, medical devices, and industrial machinery. Since 1990, our 30+ years of manufacturing expertise have taught us that even a micron-level deviation in a locating pin can lead to catastrophic assembly failures. That is why we apply uncompromising standards to every pin we produce.
Our production capabilities are driven by Japanese imported Star CNC Swiss-type lathes, which excel at maintaining exceptional cylindricality and straightness in long, slender pin geometries. For applications requiring absolute micro-precision, our advanced grinding machines further refine the diameters to achieve extremely tight tolerances. We utilize premium raw materials, including high-carbon chromium bearing steel (SUJ2) and alloy tool steel (SKD11), ensuring superior wear resistance and tensile strength.
Adhering to our principle of "Integrity Oriented, Quality Foremost," every batch of precision machined locating pins undergoes rigorous inspection. Utilizing our complete set of testing instruments imported directly from Japan and Germany, we verify dimensional accuracy, surface roughness, and material hardness. Whether you need standard dowel pins, diamond pins, or completely custom OEM locating pins, Xierge provides globally competitive, reliable hardware solutions tailored to your exact specifications.
Precision Machined Locating Pins Technical Specifications
| Pin Types | Dowel Pins, Diamond Pins, Tapered Pins, Step Pins, Custom OEM Locating Pins |
|---|---|
| Machining Equipment | Star CNC Swiss-type Lathes, Cylindrical Grinders, Machining Centers |
| Diameter Tolerance | Standard: m6, h7, g6; Precision Ground: Up to ±0.002mm |
| Geometric Tolerances | Cylindricity: 0.001mm; Coaxiality: 0.002mm |
| Available Materials | SUJ2 (Bearing Steel), SKD11 (Tool Steel), SUS303/304/316 (Stainless Steel), 1045 Carbon Steel |
| Hardness | SUJ2/SKD11: HRC 58-64; Stainless Steel: HRC 35-45 (or work-hardened) |
| Surface Roughness (Ra) | Ground Surfaces: Ra 0.2 - Ra 0.4; Turned Surfaces: Ra 0.8 |
| Surface Treatments | Black Oxide, Vapor Deposition (TiN, TiCN), Passivation, Zinc-Nickel Plating |
| Inspection Equipment | Japanese/German Micrometers, Optical Comparators, Hardness Testers, CMM |
Core Advantages of Xierge Locating Pins
- Swiss-Type Cylindricality Mastery: Our Japanese Star CNC lathes combined with precision grinding guarantee exceptional cylindricality and straightness, preventing pin binding or misalignment during automated assemblies.
- Premium Wear-Resistant Materials: We strictly source certified SUJ2 and SKD11 steels, ensuring our locating pins withstand high-friction, repetitive insertion cycles without deformation.
- Advanced Heat Treatment Integration: Through controlled quenching and tempering processes, we achieve a hard, wear-resistant surface (HRC 58-64) while maintaining a tough core to prevent brittle fracture.
- Ultra-Tight Tolerance Grinding: Our advanced grinders deliver diameter tolerances up to ±0.002mm, catering to high-precision automotive and medical assembly jigs that require zero-play fitting.
- Comprehensive Surface Engineering: We offer specialized coatings like TiCN and black oxide to enhance surface hardness, reduce galling, and provide long-term corrosion resistance.
- State-of-the-Art Quality Assurance: Equipped with imported Japanese and German metrology tools, we conduct 100% dimensional and geometric inspections on critical locating pin batches.
- 3-Decade Custom OEM Capability: Since 1990, we have perfected the art of translating complex custom pin designs (e.g., eccentric pins, threaded locating pins) into cost-effective, high-quality mass production.
Payment Methods & Global Logistics Solutions
Secure International Payment Terms:
To ensure smooth global trade for our B2B clients, we offer flexible payment methods. For standard mass production orders, we accept T/T (30% deposit in advance, 70% balance before shipment). For large-scale contracts, Irrevocable Letters of Credit (L/C) at sight are fully supported. For initial samples, prototype development, or tooling fees, PayPal and Western Union are available to expedite the process.
Global Logistics & Protective Packaging:
We provide end-to-end logistics solutions under FOB, CIF, and DAP Incoterms. For urgent prototypes or small batches, we utilize expedited air express (DHL, FedEx, UPS). For bulk orders, we offer competitive sea freight (LCL/FCL) and air cargo rates through our trusted forwarder network. Recognizing that locating pins are high-precision components, we utilize anti-static VCI (Volatile Corrosion Inhibitor) paper, vacuum-sealed plastic wrap, and custom blister packaging to prevent oxidation, impact damage, and scratching during international transit. All goods are packed in sturdy export-grade cartons or wooden pallets.
FAQ
Long pins are highly susceptible to deflection. We utilize our Japanese imported Star CNC Swiss-type lathes, which support the bar stock through a guide bushing immediately adjacent to the cutting tool. This drastically reduces vibration and bending. For final sizing, we employ centerless or cylindrical grinding to achieve cylindricity tolerances as tight as 0.001mm.
SUJ2 (high-carbon chromium bearing steel) is ideal for applications requiring extreme hardness (HRC 60+) and high wear resistance, such as automotive stamping dies. SUS304 stainless steel is chosen for medical devices or food machinery where corrosion resistance and non-magnetic properties are critical, though it generally has a lower achievable hardness than SUJ2.
Yes. Beyond standard round dowel pins, our 4-axis machining centers allow us to produce complex geometries like diamond pins (with relieved flats to prevent binding during alignment) and eccentric pins (used for micro-adjustments in fixtures). We can work directly from your CAD models to produce these custom shapes.
To prevent galling (metal transfer and tearing) during press-fitting or repeated use, we apply specific surface treatments such as black oxide coating, phosphate coating, or vapor deposition coatings like TiN (Titanium Nitride). These treatments increase surface hardness and create a low-friction barrier.
Absolutely. Our quality control lab is equipped with imported Japanese micrometers, air gauges, and optical comparators. We can precisely measure and certify pin diameters to ISO tolerance grades such as g6 (clearance fit) or m6/h7 (transition/interference fit), providing detailed dimensional inspection reports with every batch.
Burrs and residual fluids can severely damage precision assemblies. All our pins undergo a dedicated deburring process (tumbling or manual razor scraping) followed by thorough washing in our specialized industrial cleaning machines using ultrasonic technology. This guarantees that blind holes, chamfers, and relief grooves are completely clean and ready for use.
