Stepped alignment rings provide precise concentric location and axial positioning between mating mechanical components. Built to custom drawing specifications, these components eliminate radial play, ensure co-axial alignment under load, and simplify multi-part assembly alignment in heavy industrial machinery and automated equipment.
Key Features
Stepped Geometry: Dual or multi-diameter outer/inner profiles allow stepped transition and shoulder seating in counterbored housings.
Precision Locating Features: Controlled pilot diameters maintain exact radial alignment and prevent assembly shifting.
Critical Machining Zones: High-precision turning on locating diameters combined with squared shoulder faces to ensure perpendicular load transfer.
Functional Demands: Designed to withstand high shear forces, vibrational fatigue, and tight thermal expansion differentials.
Technical Specifications
|
Parameter |
Specification Range |
|
Outer / Inner Diameter (OD/ID) |
10 mm to 400 mm (Customized per drawing) |
|
Dimensional Tolerances |
Achievable down to ±0.005 mm |
|
Geometric Tolerances |
Concentricity within 0.01 mm, Parallel faces within 0.008 mm |
|
Features & Threading |
Metric/Unified tapped holes, dowel pin holes, extraction grooves |
|
Surface Finishes |
Black oxide, electroless nickel plating, passivation, zinc plating, or raw with rust-preventative oil |
Materials & Machining Processes
|
Category |
Available Options |
|
Alloy & Carbon Steel |
AISI 4140, 4340, 1045, 12L14 |
|
Stainless Steel |
AISI 304, 316L, 17-4PH |
|
Aluminum & Copper |
AL 6061-T6, 7075-T6; Brass C36000, Bronze C93200 |
|
Machining Operations |
CNC Turning (Hard turning for heat-treated alloys), CNC Milling, Precision Boring, ID/OD Grinding, Ultrasonic Cleaning |
Applications
Industrial Gearboxes
Aligning bearing caps and housing bores.
Hydraulic Pumps & Motors
Locating internal spool sleeves and end covers.
Automation & Robotics
Joint housing alignment in multi-axis robotic arms.
Compressors & Turbines
Stator and rotor casing positioning rings.
Customization & OEM Services
Made-to-Print Production
Manufactured strictly to customer CAD models and technical drawings (STEP, IGES, PDF).
Prototyping & Sampling
Rapid turnaround for engineering validation samples prior to full production runs.
Size Range Flexibility
Scalable setup for low-volume specialty runs (from 10 pieces) to high-volume production batches (10,000+ units).
Traceability
Material test reports (MTR) provided upon request to verify chemical and mechanical properties.
Quality Control & Inspection
Dimensional Verification: 100% inspection capability using CMM (Coordinate Measuring Machine), digital micrometers, and air gauges for tight bores.
Geometric Inspection: Dial test indicators for radial runout, concentricity, and squareness checks.
Surface Roughness: Contact profilometers to verify Ra values (e.g., Ra 0.8 µm or finer).
Documentation: Full Dimensional Inspection Reports (F.I.R.) or PPAP Level 3 documentation supplied upon agreement.
[Insert Inspection Photo Hint: Quality inspector measuring ring dimensions using a CMM or precision air gauge]
Packaging & Shipping
Rust Prevention: Coated with anti-corrosion oil and sealed in VCI (Volatile Corrosion Inhibitor) bags.
Impact Protection: Separated by EPE foam slots or individual compartmentalized boxes to prevent edge chipping and surface scratching.
Export Packaging: Sturdy double-walled corrugated cartons packed in ISPM 15 compliant fumigated wooden crates for international freight.
FAQ
Q: What is the minimum order quantity (MOQ)?
A: MOQ depends on raw material availability and machining setup. Prototypes (1–10 pcs) are accepted; batch production typically starts at 50 pcs.
Q: What is the standard lead time?
A: Prototypes take 7–12 days. Production runs take 15–25 days depending on quantity, material, and required surface treatments.
Q: What 2D/3D drawing formats do you accept?
A: STEP, IGES, SolidWorks (.sldprt), AutoCAD (.dwg, .dxf), and PDF drawings with explicit tolerances and notes.
Q: How do you handle tight concentricity tolerances?
A: Critical diameters are finished in a single chucking operation or via cylindrical grinding to eliminate setup error and guarantee concentricity within 0.01 mm.
Q: Can you provide material test reports?
A: Yes. Mill Test Certificates (MTC) showing chemical composition and mechanical strength are supplied with every raw material lot.
Q: How are parts protected against rust during ocean freight?
A: Parts are treated with anti-rust oil, sealed in VCI poly bags, and packed with desiccant packs inside sealed cartons.
Request a Quote
To receive an accurate quotation within 24 hours, please provide the following details:
Engineering Drawings: PDF drawing with dimensions, geometric tolerances (GD&T), and surface finish callouts, plus a 3D model (STEP/IGES).
Material Specification: Exact grade (e.g., AISI 4140, SUS 316L).
Quantity: Per-batch requirement and annual estimated volume.
Surface Treatment: Plating, coating, or raw finish specifications.
Quality Requirements: Standard commercial inspection or full dimensional report (F.I.R.) requirement.
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