Standard B Type SKD61 Material CNC Sprue Bush
Precision sprue bush with ±0.01mm tolerance, manufactured from SKD61 hot work die steel for superior heat and wear resistance in injection molding applications.
Product Overview
Sprue bushes are essential flow path components that channel molten plastic material from the injection molding machine nozzle into the mold interior. The bolt-type design ensures secure fixation with two bolts, preventing displacement under injection pressure.
Available Models
Standard models include A type, B type, C type, D type, and E type, with A, B, and C being the most commonly used configurations.
Material Specifications
| Material |
Inner Hardness |
Surface Hardness |
Heat Treatment |
| S45C |
SR HRC50~55 |
Partial |
- |
| SKD11 |
HRC58~62 |
HRC58~62 |
Vacuumed |
| SKD61 |
HRC34~38 |
HV900~1100 |
Nitrided |
| SKD61 |
HRC50~54 |
HRC50~54 |
Vacuumed |
Manufacturing Capabilities
Our advanced manufacturing equipment includes:
- OD Grinding
- ID Grinding
- CNC Milling
- CNC Turning
- Wire Cutting
- EDM
- Drilling
Quality Assurance
Comprehensive inspection equipment ensures precision:
- CMM
- 2.5D Measurement
- Projector
- Calipers
- Hardness Tester
- Micrometer
- Altimeter
Technical Specifications
Tolerance: ±0.05mm (customizable to requirements)
Drawing Formats: PDF, DWG, DXF, IGS, STEP
Certification: ISO9001-2008
Delivery Time: 7-15 days (quantity dependent)
Payment Terms: 50% T/T before production, 50% T/T before shipment
Packaging
Inner packaging with recyclable plastic boxes and anti-corrosive oil, outer protection with sponge and PE bags. Custom packaging available per customer requirements.
Applications
Widely used in cosmetic packaging, medical devices, daily necessities packaging, automotive components, and various industrial applications.
Our Advantages
- Competitive pricing with guaranteed quality
- Low MOQ (10pcs accepted for special conditions)
- Customized sizes and OEM services available
- Precise tolerance: ±0.05mm
- 100% inspection on all products
Product Range
- Core pins, cavity pins, insert pins
- HSS punches, precision punches, special-shaped punches
- Ejector pins, ejector sleeves, two-stage ejector pins
- Guide pillars, guide bushings, guide post sets
- Slide core units, latch locks, locating series
Frequently Asked Questions
Are you a trading company or manufacturer?
We are a factory.
How can I customize my products?
Please attach your drawings with detailed specifications including surface treatment, material, quantity, and special requirements.
How long can I get the quotation?
We provide quotations within 48 hours (considering time differences).
How long will you produce the parts?
Typically two weeks, with production scheduling based on quantity and delivery requirements.
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