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Customized High Accuracy SKD61 Sprue Bushing For Plastic Injection Moulds
Product Overview
Customized High Precision SKD61 Sprue Bushing For Plastic Injection Moulds
Sprue bushings are flow path components that allow molten plastic material to be injected from the nozzle of the injection molding machine into the interior of the mold. The bolt-type nozzle is fixed by two bolts to prevent the nozzle from falling off due to injection pressure.
Key Features & Applications
Sprue bushings are often used as grab points in robotic removal of parts, sprues, and runners. This requires the sprue to be rigid enough to resist both robot finger pressure and extraction forces. With conventional steel sprues, this is typically achieved through added cooling time. Our product reduces sprue cool time without requiring other mold modifications, yielding more rigid sprues with reduced cooling times.
The sprue bushing fits into the locating ring and connects to either the main runner opening or directly to the mold cavity. It directs plastic through runners, past the gate, and into the mold cavity. Placement methods include Linear positioning relative to two linear edges, or From Runner Sketch positioning based on runner sketch geometry endpoints.
Material Specifications
Material
Inner Hardness
Surface Hardness
Heat Treatment
S45C
HRC50~55
HRC50~55
Partial
SKD11
HRC58~62
HRC58~62
Vacuumed
SKD61
HRC34~38
HV900~1100
Nitrided
-
HRC50~54
HRC50~54
Vacuumed
Production Methods
OD Grinding
ID Grinding
CNC Milling
CNC Turning
Wire Cutting
EDM
Drilling
Manufacturing Equipment
CNC Lathe
Desktop Lathe
CNC Milling
W/EDM
OD Grinder
ID Grinder
Surface Grinder
Centerless Grinder
EDM Drilling
Inspection Equipment
CMM
Altimeter
Projector
Height Gauge
Calipers
Hardness Tester
Micrometer
Technical Specifications
Lead Time: 7-20 days, depending on order quantity
Drawing Format: PDF/DWG/DXF/IGS/STEP, etc.
Packaging: Inner packing with recycle plastic box and anticorrosive oil, outer with sponge and PE bags, or as customer's requirements
Application Field: Medical, cosmetic packaging, daily necessities packaging, etc.
Our Advantages
Competitive price with good quality
Low MOQ (10pcs accepted in some special conditions)
Customized size and OEM available
Precise tolerance: +/-0.002mm
100% inspection
Main Products
Core pin, cavity pin, insert pin, etc.
HSS punch, Precision punch, Special-shaped punch
Ejector pins, ejector sleeve, two-stage ejector pins, etc.