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Precision Steel Alignment Sleeves
Precision Steel Alignment Sleeves by Dongguan Henghui Hardware Co., Ltd., a custom steel alignment sleeves China supplier, are manufactured via precision CNC turning and grinding to deliver machining tolerances down to ±0.005mm with a surface roughness of Ra 0.4–0.8 μm, preventing assembly jamming and location drift in high-load equipment.
Features
Precision Steel Alignment Sleeves by Dongguan Henghui Hardware Co., Ltd., a custom steel alignment sleeves China supplier, are manufactured via precision CNC turning and grinding to deliver machining tolerances down to ±0.005mm with a surface roughness of Ra 0.4–0.8 μm, preventing assembly jamming and location drift in high-load equipment.
1. Precision & Fit Tolerances
| Parameter | Standard Range / Specification |
|---|---|
| Outer / Inner Diameter | 1.0 mm – 300 mm |
| Maximum Length | Up to 500 mm |
| Machining Tolerance | Up to ±0.005mm (ISO fit classes h6/H7 supported) |
| Surface Finish | Ra 0.4–0.8 μm (Ground finishes available) |
| Concentricity & Perpendicularity | Controlled within ±0.005mm based on drawing specs |
2. Material Options & OEM Stainless Steel Precision Sleeves
- Stainless Steel: SUS304, SUS316, SUS440C (for corrosive or food/medical environments)
- Carbon & Alloy Steel: 1045, 4140, 20Cr, GCr15 Bearing Steel (for high-stress structural positioning)
- Tool Steel: Available for high wear resistance
- Heat Treatment: Carburizing, case hardening, and full quenching yielding hardness levels of HRC 58–62
- Surface Finishes: Black oxide, nickel plating, zinc plating, and passivation
3. Custom Machining Features & Sleeve Prototyping
We manufacture custom alignment sleeves directly from technical drawings (STEP, IGS, DWG, or PDF):
- Custom Features: Anti-rotation keyways, internal/external oil lubrication grooves, positioning chamfers, and retaining ring grooves.
- Prototyping: 3 to 7 business days sample turn-around.
- First Article Inspection: Sample shipments include a complete FAI report upon request.
4. Quality Control & Quality Assurance
Our ISO 9001:2015 certified high precision bushings China OEM factory ensures batch-to-batch consistency for critical assembly operations:
- Inspection Equipment: Coordinate Measuring Machines (CMM), Optical Projectors, digital microscopes, surface roughness testers, and hardness testers.
- Inspection Protocol: Full inspection or AQL sampling per customer requirements.
- Documentation: Material Test Reports (MTR/CoA) and dimensional inspection sheets provided with shipment.
5. Supply Terms & Packaging
Production Lead Time: 15 to 20 days for standard production runs following sample approval.
Protective Packaging: Anti-rust oil coating, anti-static tray/grid packing to prevent part-to-part contact, vacuum-sealed bags, and export-grade wooden cases or reinforced cartons.
Request a Quote or Technical Review
Send your drawings (STEP, IGS, PDF), material specifications, target hardness, and estimated quantity to receive a DFM feedback report and quotation within 24 hours.
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