The Flanged Guide Bushing provides precision linear guidance and axial positioning in stamping dies, plastic injection molds, and automated machinery. Featuring an integrated mounting flange for secure alignment and fast installation, it maintains tight coaxiality under high-speed reciprocating loads. Available in standard ISO/JIS configurations as well as custom dimensions built directly from customer CAD drawings.
Key Features
Integrated Mounting Flange: Secures firmly to mold plates or die sets, preventing axial migration during high-frequency vertical strokes.
Critical Machining Zones: Inner bores are precision-ground to sub-micron concentricity tolerances; outer diameters feature controlled transitional reliefs for press-fit assembly.
Functional Requirements: Designed for low friction, high wear resistance, and reliable oil-film or solid lubrication retention under heavy radial loads.
Technical Specifications
|
Specification |
Details |
|
Inner Diameter (ID) |
Φ 8 mm to Φ 100 mm (Custom sizes available) |
|
Outer Diameter (OD) Tolerance |
±0.005 mm to ±0.01 mm (h5 / h6 fit classes) |
|
Concentricity |
Within 0.005 mm (Total Indicated Runout) |
|
Standard Materials |
SUJ2 (GCr15), Bearing Steel, Aluminum Bronze (CuAl10Fe5Ni5), or Gray Cast Iron (FC250) with graphite plugs |
|
Surface Hardness |
Through-hardened or carburized to HRC 58–62 (Steel variants); Depth: 0.8 mm - 1.2 mm |
|
Surface Finish |
Inner bore honed to Ra ≤ 0.4 μm with cross-hatched oil grooves for optimized lubrication retention |
Materials & Machining Processes
Material Selection: Certified alloy steels and bronzes supplied with mill test certificates (MTR). Raw stock undergoes spectral chemical analysis prior to release.
CNC Turning: High-rigidity CNC lathes execute rough and semi-finish turning, maintaining strict allowances for subsequent heat treatment distortion.
Heat Treatment: Controlled atmosphere vacuum furnaces perform quenching and tempering, ensuring uniform microstructures and stable hardness across the entire cross-section.
Precision Grinding & Honing: CNC cylindrical grinders finish outer diameters, while internal precision honing machines achieve final ID tolerances and surface textures.
Applications
Stamping Die Sets
Guide pillars and punch plates in progressive and transfer dies.
Injection Molds
Core pin guidance, ejector plate alignment, and slide unit positioning.
Automation Equipment:
Linear guide assemblies, pick-and-place transfer units, and heavy-duty mechanical slides.
Customization & OEM Services
Build-to-Print
Production executed strictly to customer 2D/3D drawings (STEP, IGES, PDF).
Dimensional Variations
Non-standard wall thicknesses, custom flange diameters, extended lengths, and oil groove modifications.
Sample Lead Time
5 to 7 business days for custom prototypes.
Production Capacity
Batch runs from 50 pieces to 50,000+ units per month utilizing automated multi-axis CNC cells.
Quality Control & Inspection
Dimensional Verification: 100% attribute gauge checks and sampling inspection using Mitutoyo CMM (Coordinate Measuring Machine) and digital bore gauges.
Geometric Tolerancing: Laser interferometers and dial test indicators verify roundness, cylinder form, and concentricity.
Hardness Testing: Rockwell hardness testers verify core and surface values on every heat-treated lot.
Documentation: Material Test Reports (MTR) and dimensional inspection sheets supplied upon request prior to shipment.
Packaging & Shipping
Anti-Rust Protection: Components coated with industrial-grade rust preventative oil and sealed in VCI (Volatile Corrosion Inhibitor) poly bags.
Physical Protection: Packed in individual compartmentalized foam slots or heavy-duty corrugated cartons to prevent impact damage during transit.
Export Logistics: Palletized and shrink-wrapped for sea freight, or reinforced carton packaging for air express delivery (DHL, FedEx, UPS).
Frequently Asked Questions
Q: What is your Minimum Order Quantity (MOQ)?
A: Standard items have no strict MOQ. Custom non-standard bushings require an MOQ of 20 pieces per size/specification to cover initial setup.
Q: What is the standard lead time?
A: Standard catalog parts ship within 3 to 5 business days. Custom manufactured orders require 15 to 20 business days depending on raw material availability and heat treatment schedules.
Q: What file formats do you accept for custom drawings?
A: We accept STEP, IGES, DXF, DWG, and PDF formats. 2D drawings must specify critical tolerances, surface finishes, and material grades.
Q: Can you provide material test certificates?
A: Yes. Full material traceability reports (MTR) and internal inspection sheets are provided with every shipment.
Q: How do you handle dimensional tolerances for press-fit installations?
A: Outer diameters are ground to specific standard fit classes (such as h6 or m5) according to your housing bore requirements to ensure proper interference fit.
Q: Do you offer self-lubricating options?
A: Yes. We supply bronze bushings pre-embedded with solid graphite plugs (Graphite-filled bronze) for maintenance-free applications where oil lubrication is not feasible.
Request a Quote
To receive a rapid and accurate quotation, please provide the following details:
Technical Drawings: 2D drawing (PDF) or 3D model (STEP/IGES) specifying ID, OD, flange dimensions, and overall length.
Material Specification: Desired alloy grade (e.g., SUJ2, CuAl10Fe5Ni5, or equivalent).
Quantity: Required batch quantity and annual forecast.
Tolerance & Surface Requirements: Specific fit classes, hardness values, or coating requirements.
Target Delivery Date: Required port of destination or delivery location.
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