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Bearing Steel Guide Pillar & Guide Bushing
This bearing steel guide pillar and guide bushing set is a high-precision guide component designed for injection molds, stamping dies and precision fixtures. Made of high-carbon chromium bearing steel (GCr15) and precision machined, it features high hardness, excellent wear resistance and low friction coefficient. It ensures accurate guidance and smooth operation during mold opening and closing, extending mold service life. Widely used in various precision mold production.
- Machining Process: Precision turning, heat treatment, internal/external cylindrical grinding
- Material: GCr15 Bearing Steel (SUJ2 optional)
- Accuracy: ±0.002 mm
- Surface Finish: Mirror polish / Chrome plating / Nitriding optional
- Hardness: HRC60-64
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We specialize in custom manufacturing of mold guide pillar and guide bushing assemblies and other precision components, equipped with high-precision CNC lathes, internal/external cylindrical grinders, heat treatment equipment and surface treatment facilities, with over ten years of experience in mold component production. The key dimensional tolerance of the guide pillar and bushing is stably controlled within ±0.002 mm, with a monthly production capacity of 80,000 sets. We provide one-stop services from design, material processing, heat treatment to surface treatment, serving customers in injection molds, stamping dies and automation equipment industries.
Technological Process
- Drawing & Process Design: Determine guide pillar and bushing specifications, tolerances and fitting methods based on customer requirements, and optimize processing technology.
- Material Cutting & Rough Machining: Cut GCr15 bearing steel bars to size and perform rough turning to remove most of the excess material.
- Heat Treatment: Conduct quenching and tempering to stabilize material hardness at HRC60-64, improving wear resistance and toughness.
- Precision Grinding: Precision grind the guide pillar shank on an external cylindrical grinder and the guide bushing inner hole on an internal cylindrical grinder to ensure dimensional accuracy, roundness and coaxiality.
- Surface Treatment (Optional): Conduct mirror polishing, chrome plating or nitriding treatment as required to improve surface finish, wear resistance and corrosion resistance.
- Inspection & Packaging: Fully inspect the guide pillar and bushing for dimensions, roundness, coaxiality, hardness and surface quality, then pair and package qualified products by specifications.
Core Advantages & Applications
Common Applications
- Injection Molds: Guide and positioning components for standard mold bases and custom molds
- Stamping Dies: Precision guidance for metal stamping, terminal dies and progressive dies
- Automation Equipment: Guide components for linear motion mechanisms, positioning fixtures and precision jigs
- Tooling Fixtures: Positioning and guidance components for inspection and assembly tooling
Specification Table
| Parameter | Details |
| Material | Standard GCr15 Bearing Steel (SUJ2 optional) |
| Machining Process | CNC turning, heat treatment, internal/external cylindrical precision grinding, forming machining |
| Dimensional Tolerance | ±0.002 mm (Custom precision available) |
| Surface Finish | Mirror polish, chrome plating, nitriding (Optional) |
| Hardness | HRC60-64 |
| Diameter Range | Custom per customer drawings (Typical φ10mm-φ50mm) |
| Length Range | Custom per customer drawings (Typical 50mm-300mm) |
| Fitting Type | Straight type, stepped type, ball type, oil groove type (Customizable) |
| Quality Control | 100% inspection of dimensional tolerance, roundness, coaxiality and hardness, batch inspection reports available |
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